ARM64ISelLowering.cpp [plain text]
#define DEBUG_TYPE "arm64-lower"
#include "ARM64ISelLowering.h"
#include "ARM64PerfectShuffle.h"
#include "ARM64Subtarget.h"
#include "ARM64CallingConv.h"
#include "ARM64MachineFunctionInfo.h"
#include "ARM64TargetMachine.h"
#include "ARM64TargetObjectFile.h"
#include "MCTargetDesc/ARM64AddressingModes.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetOptions.h"
using namespace llvm;
STATISTIC(NumTailCalls, "Number of tail calls");
STATISTIC(NumShiftInserts, "Number of vector shift inserts");
static cl::opt<bool>
EnableARM64TailCalls("arm64-tail-calls", cl::Hidden,
cl::desc("Generate ARM64 tail calls (TEMPORARY OPTION)."),
cl::init(true));
static cl::opt<bool>
StrictAlign("arm64-strict-align", cl::Hidden,
cl::desc("Disallow all unaligned memory accesses"));
static cl::opt<bool>
EnableARM64ExtrGeneration("arm64-extr-generation", cl::Hidden,
cl::desc("Allow ARM64 (or (shift)(shift))->extract"),
cl::init(true));
static cl::opt<bool>
EnableARM64SlrGeneration("arm64-shift-insert-generation", cl::Hidden,
cl::desc("Allow ARM64 SLI/SRI formation"),
cl::init(false));
static TargetLoweringObjectFile *createTLOF(TargetMachine &TM) {
if (TM.getSubtarget<ARM64Subtarget>().isTargetDarwin())
return new ARM64_MachoTargetObjectFile();
return new ARM64_ELFTargetObjectFile();
}
ARM64TargetLowering::ARM64TargetLowering(ARM64TargetMachine &TM) :
TargetLowering(TM, createTLOF(TM)) {
Subtarget = &TM.getSubtarget<ARM64Subtarget>();
setBooleanContents(ZeroOrOneBooleanContent);
setBooleanVectorContents(ZeroOrNegativeOneBooleanContent);
addRegisterClass(MVT::i32, &ARM64::GPR32allRegClass);
addRegisterClass(MVT::i64, &ARM64::GPR64allRegClass);
addRegisterClass(MVT::f32, &ARM64::FPR32RegClass);
addRegisterClass(MVT::f64, &ARM64::FPR64RegClass);
addRegisterClass(MVT::f128, &ARM64::FPR128RegClass);
addRegisterClass(MVT::v16i8, &ARM64::FPR8RegClass);
addRegisterClass(MVT::v8i16, &ARM64::FPR16RegClass);
addDRTypeForNEON(MVT::v2f32);
addDRTypeForNEON(MVT::v8i8);
addDRTypeForNEON(MVT::v4i16);
addDRTypeForNEON(MVT::v2i32);
addDRTypeForNEON(MVT::v1i64);
addDRTypeForNEON(MVT::v1f64);
addQRTypeForNEON(MVT::v4f32);
addQRTypeForNEON(MVT::v2f64);
addQRTypeForNEON(MVT::v16i8);
addQRTypeForNEON(MVT::v8i16);
addQRTypeForNEON(MVT::v4i32);
addQRTypeForNEON(MVT::v2i64);
computeRegisterProperties();
setOperationAction(ISD::GlobalAddress, MVT::i64, Custom);
setOperationAction(ISD::GlobalTLSAddress, MVT::i64, Custom);
setOperationAction(ISD::SETCC, MVT::i32, Custom);
setOperationAction(ISD::SETCC, MVT::i64, Custom);
setOperationAction(ISD::SETCC, MVT::f32, Custom);
setOperationAction(ISD::SETCC, MVT::f64, Custom);
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
setOperationAction(ISD::BR_CC, MVT::i32, Custom);
setOperationAction(ISD::BR_CC, MVT::i64, Custom);
setOperationAction(ISD::BR_CC, MVT::f32, Custom);
setOperationAction(ISD::BR_CC, MVT::f64, Custom);
setOperationAction(ISD::SELECT, MVT::i32, Custom);
setOperationAction(ISD::SELECT, MVT::i64, Custom);
setOperationAction(ISD::SELECT, MVT::f32, Custom);
setOperationAction(ISD::SELECT, MVT::f64, Custom);
setOperationAction(ISD::SELECT_CC, MVT::i32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::i64, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
setOperationAction(ISD::JumpTable, MVT::i64, Custom);
setOperationAction(ISD::SHL_PARTS, MVT::i64, Custom);
setOperationAction(ISD::SRA_PARTS, MVT::i64, Custom);
setOperationAction(ISD::SRL_PARTS, MVT::i64, Custom);
setOperationAction(ISD::FREM, MVT::f32, Expand);
setOperationAction(ISD::FREM, MVT::f64, Expand);
setOperationAction(ISD::FREM, MVT::f80, Expand);
setOperationAction(ISD::XOR, MVT::i32, Custom);
setOperationAction(ISD::XOR, MVT::i64, Custom);
setOperationAction(ISD::FABS, MVT::f128, Expand);
setOperationAction(ISD::FADD, MVT::f128, Custom);
setOperationAction(ISD::FCOPYSIGN, MVT::f128, Expand);
setOperationAction(ISD::FCOS, MVT::f128, Expand);
setOperationAction(ISD::FDIV, MVT::f128, Custom);
setOperationAction(ISD::FMA, MVT::f128, Expand);
setOperationAction(ISD::FMUL, MVT::f128, Custom);
setOperationAction(ISD::FNEG, MVT::f128, Expand);
setOperationAction(ISD::FPOW, MVT::f128, Expand);
setOperationAction(ISD::FREM, MVT::f128, Expand);
setOperationAction(ISD::FRINT, MVT::f128, Expand);
setOperationAction(ISD::FSIN, MVT::f128, Expand);
setOperationAction(ISD::FSINCOS, MVT::f128, Expand);
setOperationAction(ISD::FSQRT, MVT::f128, Expand);
setOperationAction(ISD::FSUB, MVT::f128, Custom);
setOperationAction(ISD::FTRUNC, MVT::f128, Expand);
setOperationAction(ISD::SETCC, MVT::f128, Custom);
setOperationAction(ISD::BR_CC, MVT::f128, Custom);
setOperationAction(ISD::SELECT, MVT::f128, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f128, Custom);
setOperationAction(ISD::FP_EXTEND, MVT::f128, Custom);
setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
setOperationAction(ISD::FP_TO_SINT, MVT::i128, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i128, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::i32, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::i128, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::i32, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::i64, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::i128, Custom);
setOperationAction(ISD::FP_ROUND, MVT::f32, Custom);
setOperationAction(ISD::FP_ROUND, MVT::f64, Custom);
setOperationAction(ISD::ATOMIC_SWAP, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_OR, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_ADD, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_SUB, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_AND, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_XOR, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_MIN, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_MAX, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_NAND, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_UMIN, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD_UMAX, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_LOAD, MVT::i128, Custom);
setOperationAction(ISD::ATOMIC_STORE, MVT::i128, Expand);
setOperationAction(ISD::VASTART, MVT::Other, Custom);
setOperationAction(ISD::VAARG, MVT::Other, Custom);
setOperationAction(ISD::VACOPY, MVT::Other, Custom);
setOperationAction(ISD::VAEND, MVT::Other, Expand);
setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Expand);
setExceptionPointerRegister(ARM64::X0);
setExceptionSelectorRegister(ARM64::X1);
setOperationAction(ISD::ConstantPool, MVT::i64, Custom);
setOperationAction(ISD::BlockAddress, MVT::i64, Custom);
setOperationAction(ISD::ADDC, MVT::i32, Custom);
setOperationAction(ISD::ADDE, MVT::i32, Custom);
setOperationAction(ISD::SUBC, MVT::i32, Custom);
setOperationAction(ISD::SUBE, MVT::i32, Custom);
setOperationAction(ISD::ADDC, MVT::i64, Custom);
setOperationAction(ISD::ADDE, MVT::i64, Custom);
setOperationAction(ISD::SUBC, MVT::i64, Custom);
setOperationAction(ISD::SUBE, MVT::i64, Custom);
setOperationAction(ISD::ROTL, MVT::i32, Expand);
setOperationAction(ISD::ROTL, MVT::i64, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::v4i8, Promote);
setOperationAction(ISD::SINT_TO_FP, MVT::v4i8, Promote);
setOperationAction(ISD::UINT_TO_FP, MVT::v4i16, Promote);
setOperationAction(ISD::SINT_TO_FP, MVT::v4i16, Promote);
setOperationAction(ISD::SINT_TO_FP, MVT::v2i32, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::v2i32, Custom);
setOperationAction(ISD::SINT_TO_FP, MVT::v2i64, Custom);
setOperationAction(ISD::UINT_TO_FP, MVT::v2i64, Custom);
setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::MUL, MVT::v2i64, Expand);
setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Custom);
setOperationAction(ISD::CTPOP, MVT::i64, Custom);
setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
setOperationAction(ISD::SDIVREM, MVT::i64, Expand);
setOperationAction(ISD::SREM, MVT::i32, Expand);
setOperationAction(ISD::SREM, MVT::i64, Expand);
setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
setOperationAction(ISD::UDIVREM, MVT::i64, Expand);
setOperationAction(ISD::UREM, MVT::i32, Expand);
setOperationAction(ISD::UREM, MVT::i64, Expand);
setOperationAction(ISD::SADDO, MVT::i32, Custom);
setOperationAction(ISD::SADDO, MVT::i64, Custom);
setOperationAction(ISD::UADDO, MVT::i32, Custom);
setOperationAction(ISD::UADDO, MVT::i64, Custom);
setOperationAction(ISD::SSUBO, MVT::i32, Custom);
setOperationAction(ISD::SSUBO, MVT::i64, Custom);
setOperationAction(ISD::USUBO, MVT::i32, Custom);
setOperationAction(ISD::USUBO, MVT::i64, Custom);
setOperationAction(ISD::SMULO, MVT::i32, Custom);
setOperationAction(ISD::SMULO, MVT::i64, Custom);
setOperationAction(ISD::UMULO, MVT::i32, Custom);
setOperationAction(ISD::UMULO, MVT::i64, Custom);
setOperationAction(ISD::FSIN, MVT::f32, Expand);
setOperationAction(ISD::FSIN, MVT::f64, Expand);
setOperationAction(ISD::FCOS, MVT::f32, Expand);
setOperationAction(ISD::FCOS, MVT::f64, Expand);
setOperationAction(ISD::FPOW, MVT::f32, Expand);
setOperationAction(ISD::FPOW, MVT::f64, Expand);
setOperationAction(ISD::FCOPYSIGN, MVT::f64, Custom);
setOperationAction(ISD::FCOPYSIGN, MVT::f32, Custom);
setOperationAction(ISD::FFLOOR, MVT::f64, Legal);
setOperationAction(ISD::FFLOOR, MVT::f32, Legal);
setOperationAction(ISD::FNEARBYINT, MVT::f64, Legal);
setOperationAction(ISD::FNEARBYINT, MVT::f32, Legal);
setOperationAction(ISD::FCEIL, MVT::f64, Legal);
setOperationAction(ISD::FCEIL, MVT::f32, Legal);
setOperationAction(ISD::FRINT, MVT::f64, Legal);
setOperationAction(ISD::FRINT, MVT::f32, Legal);
setOperationAction(ISD::FTRUNC, MVT::f64, Legal);
setOperationAction(ISD::FTRUNC, MVT::f32, Legal);
setOperationAction(ISD::FROUND, MVT::f32, Legal);
setOperationAction(ISD::FROUND, MVT::f64, Legal);
setOperationAction(ISD::PREFETCH, MVT::Other, Custom);
setOperationAction(ISD::FSINCOS, MVT::f64, Custom);
setOperationAction(ISD::FSINCOS, MVT::f32, Custom);
setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
setLoadExtAction(ISD::EXTLOAD, MVT::f64, Expand);
setLoadExtAction(ISD::EXTLOAD, MVT::f80, Expand);
setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Expand);
setTruncStoreAction(MVT::f64, MVT::f32, Expand);
setTruncStoreAction(MVT::f128, MVT::f80, Expand);
setTruncStoreAction(MVT::f128, MVT::f64, Expand);
setTruncStoreAction(MVT::f128, MVT::f32, Expand);
setTruncStoreAction(MVT::v2i32, MVT::v2i16, Expand);
for (unsigned im = (unsigned)ISD::PRE_INC;
im != (unsigned)ISD::LAST_INDEXED_MODE; ++im) {
setIndexedLoadAction(im, MVT::i8, Legal);
setIndexedLoadAction(im, MVT::i16, Legal);
setIndexedLoadAction(im, MVT::i32, Legal);
setIndexedLoadAction(im, MVT::i64, Legal);
setIndexedLoadAction(im, MVT::f64, Legal);
setIndexedLoadAction(im, MVT::f32, Legal);
setIndexedStoreAction(im, MVT::i8, Legal);
setIndexedStoreAction(im, MVT::i16, Legal);
setIndexedStoreAction(im, MVT::i32, Legal);
setIndexedStoreAction(im, MVT::i64, Legal);
setIndexedStoreAction(im, MVT::f64, Legal);
setIndexedStoreAction(im, MVT::f32, Legal);
}
for (unsigned VT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
VT <= (unsigned)MVT::LAST_VECTOR_VALUETYPE; ++VT) {
setOperationAction(ISD::SIGN_EXTEND_INREG,(MVT::SimpleValueType)VT,Expand);
for (unsigned InnerVT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
InnerVT <= (unsigned)MVT::LAST_VECTOR_VALUETYPE; ++InnerVT)
setTruncStoreAction((MVT::SimpleValueType)VT,
(MVT::SimpleValueType)InnerVT, Expand);
setLoadExtAction(ISD::SEXTLOAD, (MVT::SimpleValueType)VT, Expand);
setLoadExtAction(ISD::ZEXTLOAD, (MVT::SimpleValueType)VT, Expand);
setLoadExtAction(ISD::EXTLOAD, (MVT::SimpleValueType)VT, Expand);
}
setOperationAction(ISD::TRAP, MVT::Other, Legal);
setOperationAction(ISD::ANY_EXTEND, MVT::v4i32, Legal);
setTargetDAGCombine(ISD::OR);
setTargetDAGCombine(ISD::ADD);
setTargetDAGCombine(ISD::SUB);
setTargetDAGCombine(ISD::XOR);
setTargetDAGCombine(ISD::SINT_TO_FP);
setTargetDAGCombine(ISD::UINT_TO_FP);
setTargetDAGCombine(ISD::INTRINSIC_WO_CHAIN);
setTargetDAGCombine(ISD::ANY_EXTEND);
setTargetDAGCombine(ISD::ZERO_EXTEND);
setTargetDAGCombine(ISD::SIGN_EXTEND);
setTargetDAGCombine(ISD::BITCAST);
setTargetDAGCombine(ISD::CONCAT_VECTORS);
setTargetDAGCombine(ISD::STORE);
if (Subtarget->supportsAddressTopByteIgnored())
setTargetDAGCombine(ISD::LOAD);
setTargetDAGCombine(ISD::MUL);
MaxStoresPerMemset = MaxStoresPerMemsetOptSize = 8;
MaxStoresPerMemcpy = MaxStoresPerMemcpyOptSize = 4;
MaxStoresPerMemmove = MaxStoresPerMemmoveOptSize = 4;
setStackPointerRegisterToSaveRestore(ARM64::SP);
setSchedulingPreference(Sched::Hybrid);
MaskAndBranchFoldingIsLegal = true;
setMinFunctionAlignment(2);
RequireStrictAlign = StrictAlign;
setHasExtractBitsInsn(true);
}
void ARM64TargetLowering::addTypeForNEON(EVT VT, EVT PromotedBitwiseVT) {
if (VT == MVT::v2f32) {
setOperationAction(ISD::LOAD, VT.getSimpleVT(), Promote);
AddPromotedToType (ISD::LOAD, VT.getSimpleVT(), MVT::v2i32);
setOperationAction(ISD::STORE, VT.getSimpleVT(), Promote);
AddPromotedToType (ISD::STORE, VT.getSimpleVT(), MVT::v2i32);
} else if (VT == MVT::v2f64 || VT == MVT::v4f32) {
setOperationAction(ISD::LOAD, VT.getSimpleVT(), Promote);
AddPromotedToType (ISD::LOAD, VT.getSimpleVT(), MVT::v2i64);
setOperationAction(ISD::STORE, VT.getSimpleVT(), Promote);
AddPromotedToType (ISD::STORE, VT.getSimpleVT(), MVT::v2i64);
}
if (VT == MVT::v2f32 || VT == MVT::v4f32 || VT == MVT::v2f64) {
setOperationAction(ISD::FSIN, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FCOS, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FPOWI, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FPOW, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FLOG, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FLOG2, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FLOG10, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FEXP, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FEXP2, VT.getSimpleVT(), Expand);
}
setOperationAction(ISD::EXTRACT_VECTOR_ELT, VT.getSimpleVT(), Custom);
setOperationAction(ISD::INSERT_VECTOR_ELT, VT.getSimpleVT(), Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, VT.getSimpleVT(), Custom);
setOperationAction(ISD::BUILD_VECTOR, VT.getSimpleVT(), Custom);
setOperationAction(ISD::VECTOR_SHUFFLE, VT.getSimpleVT(), Custom);
setOperationAction(ISD::EXTRACT_SUBVECTOR, VT.getSimpleVT(), Custom);
setOperationAction(ISD::SRA, VT.getSimpleVT(), Custom);
setOperationAction(ISD::SRL, VT.getSimpleVT(), Custom);
setOperationAction(ISD::SHL, VT.getSimpleVT(), Custom);
setOperationAction(ISD::AND, VT.getSimpleVT(), Custom);
setOperationAction(ISD::OR, VT.getSimpleVT(), Custom);
setOperationAction(ISD::SETCC, VT.getSimpleVT(), Custom);
setOperationAction(ISD::CONCAT_VECTORS, VT.getSimpleVT(), Legal);
setOperationAction(ISD::SELECT, VT.getSimpleVT(), Expand);
setOperationAction(ISD::SELECT_CC, VT.getSimpleVT(), Expand);
setOperationAction(ISD::VSELECT, VT.getSimpleVT(), Expand);
setLoadExtAction(ISD::EXTLOAD, VT.getSimpleVT(), Expand);
if (VT != MVT::v8i8 && VT != MVT::v16i8)
setOperationAction(ISD::CTPOP, VT.getSimpleVT(), Expand);
setOperationAction(ISD::UDIV, VT.getSimpleVT(), Expand);
setOperationAction(ISD::SDIV, VT.getSimpleVT(), Expand);
setOperationAction(ISD::UREM, VT.getSimpleVT(), Expand);
setOperationAction(ISD::SREM, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FREM, VT.getSimpleVT(), Expand);
setOperationAction(ISD::FP_TO_SINT, VT.getSimpleVT(), Custom);
setOperationAction(ISD::FP_TO_UINT, VT.getSimpleVT(), Custom);
}
void ARM64TargetLowering::addDRTypeForNEON(MVT VT) {
addRegisterClass(VT, &ARM64::FPR64RegClass);
addTypeForNEON(VT, MVT::v2i32);
}
void ARM64TargetLowering::addQRTypeForNEON(MVT VT) {
addRegisterClass(VT, &ARM64::FPR128RegClass);
addTypeForNEON(VT, MVT::v4i32);
}
EVT ARM64TargetLowering::getSetCCResultType(LLVMContext &, EVT VT) const {
if (!VT.isVector()) return MVT::i32;
return VT.changeVectorElementTypeToInteger();
}
void
ARM64TargetLowering::computeMaskedBitsForTargetNode(const SDValue Op,
APInt &KnownZero,
APInt &KnownOne,
const SelectionDAG &DAG,
unsigned Depth) const {
switch (Op.getOpcode()) {
default: break;
case ARM64ISD::CSEL: {
APInt KnownZero2, KnownOne2;
DAG.ComputeMaskedBits(Op->getOperand(0), KnownZero, KnownOne, Depth + 1);
DAG.ComputeMaskedBits(Op->getOperand(1), KnownZero2, KnownOne2, Depth + 1);
KnownZero &= KnownZero2;
KnownOne &= KnownOne2;
break;
}
case ISD::INTRINSIC_W_CHAIN:
break;
case ISD::INTRINSIC_WO_CHAIN:
case ISD::INTRINSIC_VOID: {
unsigned IntNo = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
switch (IntNo) {
default: break;
case Intrinsic::arm64_neon_umaxv:
case Intrinsic::arm64_neon_uminv: {
MVT VT = Op.getOperand(1).getValueType().getSimpleVT();
unsigned BitWidth = KnownZero.getBitWidth();
if (VT == MVT::v8i8 || VT == MVT::v16i8) {
assert (BitWidth >= 8 && "Unexpected width!");
APInt Mask = APInt::getHighBitsSet(BitWidth, BitWidth - 8);
KnownZero |= Mask;
} else if (VT == MVT::v4i16 || VT == MVT::v8i16) {
assert (BitWidth >= 16 && "Unexpected width!");
APInt Mask = APInt::getHighBitsSet(BitWidth, BitWidth - 16);
KnownZero |= Mask;
}
break;
}
break;
}
}
}
}
MVT ARM64TargetLowering::getScalarShiftAmountTy(EVT LHSTy) const {
if (!LHSTy.isSimple()) return MVT::i64;
MVT SimpleVT = LHSTy.getSimpleVT();
if (SimpleVT == MVT::i32) return MVT::i32;
return MVT::i64;
}
unsigned ARM64TargetLowering::getMaximalGlobalOffset() const {
return 4095;
}
FastISel*
ARM64TargetLowering::createFastISel(FunctionLoweringInfo &funcInfo,
const TargetLibraryInfo *libInfo) const {
return ARM64::createFastISel(funcInfo, libInfo);
}
const char *ARM64TargetLowering::getTargetNodeName(unsigned Opcode) const {
switch (Opcode) {
default: return 0;
case ARM64ISD::CALL: return "ARM64ISD::CALL";
case ARM64ISD::ADRP: return "ARM64ISD::ADRP";
case ARM64ISD::ADDlow: return "ARM64ISD::ADDlow";
case ARM64ISD::LOADgot: return "ARM64ISD::LOADgot";
case ARM64ISD::RET_FLAG: return "ARM64ISD::RET_FLAG";
case ARM64ISD::BRCOND: return "ARM64ISD::BRCOND";
case ARM64ISD::CSEL: return "ARM64ISD::CSEL";
case ARM64ISD::FCSEL: return "ARM64ISD::FCSEL";
case ARM64ISD::CSINV: return "ARM64ISD::CSINV";
case ARM64ISD::CSNEG: return "ARM64ISD::CSNEG";
case ARM64ISD::CSINC: return "ARM64ISD::CSINC";
case ARM64ISD::THREAD_POINTER: return "ARM64ISD::THREAD_POINTER";
case ARM64ISD::TLSDESC_CALL: return "ARM64ISD::TLSDESC_CALL";
case ARM64ISD::ADC: return "ARM64ISD::ADC";
case ARM64ISD::SBC: return "ARM64ISD::SBC";
case ARM64ISD::ADDS: return "ARM64ISD::ADDS";
case ARM64ISD::SUBS: return "ARM64ISD::SUBS";
case ARM64ISD::ADCS: return "ARM64ISD::ADCS";
case ARM64ISD::SBCS: return "ARM64ISD::SBCS";
case ARM64ISD::ANDS: return "ARM64ISD::ANDS";
case ARM64ISD::FCMP: return "ARM64ISD::FCMP";
case ARM64ISD::FMIN: return "ARM64ISD::FMIN";
case ARM64ISD::FMAX: return "ARM64ISD::FMAX";
case ARM64ISD::DUP: return "ARM64ISD::DUP";
case ARM64ISD::DUPLANE8: return "ARM64ISD::DUPLANE8";
case ARM64ISD::DUPLANE16: return "ARM64ISD::DUPLANE16";
case ARM64ISD::DUPLANE32: return "ARM64ISD::DUPLANE32";
case ARM64ISD::DUPLANE64: return "ARM64ISD::DUPLANE64";
case ARM64ISD::MOVI: return "ARM64ISD::MOVI";
case ARM64ISD::MOVIshift: return "ARM64ISD::MOVIshift";
case ARM64ISD::MOVIedit: return "ARM64ISD::MOVIedit";
case ARM64ISD::MOVImsl: return "ARM64ISD::MOVImsl";
case ARM64ISD::FMOV: return "ARM64ISD::FMOV";
case ARM64ISD::MVNIshift: return "ARM64ISD::MVNIshift";
case ARM64ISD::MVNImsl: return "ARM64ISD::MVNImsl";
case ARM64ISD::BICi: return "ARM64ISD::BICi";
case ARM64ISD::ORRi: return "ARM64ISD::ORRi";
case ARM64ISD::NEG: return "ARM64ISD::NEG";
case ARM64ISD::EXTR: return "ARM64ISD::EXTR";
case ARM64ISD::ZIP1: return "ARM64ISD::ZIP1";
case ARM64ISD::ZIP2: return "ARM64ISD::ZIP2";
case ARM64ISD::UZP1: return "ARM64ISD::UZP1";
case ARM64ISD::UZP2: return "ARM64ISD::UZP2";
case ARM64ISD::TRN1: return "ARM64ISD::TRN1";
case ARM64ISD::TRN2: return "ARM64ISD::TRN2";
case ARM64ISD::REV16: return "ARM64ISD::REV16";
case ARM64ISD::REV32: return "ARM64ISD::REV32";
case ARM64ISD::REV64: return "ARM64ISD::REV64";
case ARM64ISD::EXT: return "ARM64ISD::EXT";
case ARM64ISD::VSHL: return "ARM64ISD::VSHL";
case ARM64ISD::VLSHR: return "ARM64ISD::VLSHR";
case ARM64ISD::VASHR: return "ARM64ISD::VASHR";
case ARM64ISD::CMEQ: return "ARM64ISD::CMEQ";
case ARM64ISD::CMGE: return "ARM64ISD::CMGE";
case ARM64ISD::CMGT: return "ARM64ISD::CMGT";
case ARM64ISD::CMHI: return "ARM64ISD::CMHI";
case ARM64ISD::CMHS: return "ARM64ISD::CMHS";
case ARM64ISD::FCMEQ: return "ARM64ISD::FCMEQ";
case ARM64ISD::FCMGE: return "ARM64ISD::FCMGE";
case ARM64ISD::FCMGT: return "ARM64ISD::FCMGT";
case ARM64ISD::CMEQz: return "ARM64ISD::CMEQz";
case ARM64ISD::CMGEz: return "ARM64ISD::CMGEz";
case ARM64ISD::CMGTz: return "ARM64ISD::CMGTz";
case ARM64ISD::CMLEz: return "ARM64ISD::CMLEz";
case ARM64ISD::CMLTz: return "ARM64ISD::CMLTz";
case ARM64ISD::FCMEQz: return "ARM64ISD::FCMEQz";
case ARM64ISD::FCMGEz: return "ARM64ISD::FCMGEz";
case ARM64ISD::FCMGTz: return "ARM64ISD::FCMGTz";
case ARM64ISD::FCMLEz: return "ARM64ISD::FCMLEz";
case ARM64ISD::FCMLTz: return "ARM64ISD::FCMLTz";
case ARM64ISD::NOT: return "ARM64ISD::NOT";
case ARM64ISD::BIT: return "ARM64ISD::BIT";
case ARM64ISD::CBZ: return "ARM64ISD::CBZ";
case ARM64ISD::CBNZ: return "ARM64ISD::CBNZ";
case ARM64ISD::TBZ: return "ARM64ISD::TBZ";
case ARM64ISD::TBNZ: return "ARM64ISD::TBNZ";
case ARM64ISD::TC_RETURN: return "ARM64ISD::TC_RETURN";
case ARM64ISD::SITOF: return "ARM64ISD::SITOF";
case ARM64ISD::UITOF: return "ARM64ISD::UITOF";
case ARM64ISD::WrapperLarge: return "ARM64ISD::WrapperLarge";
}
}
static void getExclusiveOperation(unsigned Size, AtomicOrdering Ord,
unsigned &LdrOpc,
unsigned &StrOpc) {
static unsigned LoadBares[] = {ARM64::LDXRB, ARM64::LDXRH,
ARM64::LDXRW, ARM64::LDXRX, ARM64::LDXPX};
static unsigned LoadAcqs[] = {ARM64::LDAXRB, ARM64::LDAXRH,
ARM64::LDAXRW, ARM64::LDAXRX, ARM64::LDAXPX};
static unsigned StoreBares[] = {ARM64::STXRB, ARM64::STXRH,
ARM64::STXRW, ARM64::STXRX, ARM64::STXPX};
static unsigned StoreRels[] = {ARM64::STLXRB, ARM64::STLXRH,
ARM64::STLXRW, ARM64::STLXRX, ARM64::STLXPX};
unsigned *LoadOps, *StoreOps;
if (Ord == Acquire || Ord == AcquireRelease || Ord == SequentiallyConsistent)
LoadOps = LoadAcqs;
else
LoadOps = LoadBares;
if (Ord == Release || Ord == AcquireRelease || Ord == SequentiallyConsistent)
StoreOps = StoreRels;
else
StoreOps = StoreBares;
assert(isPowerOf2_32(Size) && Size <= 16 &&
"unsupported size for atomic binary op!");
LdrOpc = LoadOps[Log2_32(Size)];
StrOpc = StoreOps[Log2_32(Size)];
}
MachineBasicBlock *
ARM64TargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
MachineBasicBlock *BB,
unsigned Size) const {
unsigned dest = MI->getOperand(0).getReg();
unsigned ptr = MI->getOperand(1).getReg();
unsigned oldval = MI->getOperand(2).getReg();
unsigned newval = MI->getOperand(3).getReg();
AtomicOrdering Ord = static_cast<AtomicOrdering>(MI->getOperand(4).getImm());
unsigned scratch = BB->getParent()->getRegInfo()
.createVirtualRegister(&ARM64::GPR32RegClass);
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
DebugLoc dl = MI->getDebugLoc();
unsigned ldrOpc, strOpc;
getExclusiveOperation(Size, Ord, ldrOpc, strOpc);
MachineFunction *MF = BB->getParent();
const BasicBlock *LLVM_BB = BB->getBasicBlock();
MachineFunction::iterator It = BB;
++It;
MachineBasicBlock *loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MF->insert(It, loop1MBB);
MF->insert(It, loop2MBB);
MF->insert(It, exitMBB);
exitMBB->splice(exitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
BB->addSuccessor(loop1MBB);
BB = loop1MBB;
BuildMI(BB, dl, TII->get(ldrOpc), dest).addReg(ptr);
BuildMI(BB, dl, TII->get(Size == 8 ? ARM64::SUBSXrr : ARM64::SUBSWrr))
.addReg(Size == 8 ? ARM64::XZR : ARM64::WZR, RegState::Define)
.addReg(dest).addReg(oldval);
BuildMI(BB, dl, TII->get(ARM64::Bcc)).addImm(ARM64CC::NE).addMBB(exitMBB);
BB->addSuccessor(loop2MBB);
BB->addSuccessor(exitMBB);
BB = loop2MBB;
BuildMI(BB, dl, TII->get(strOpc), scratch).addReg(newval).addReg(ptr);
BuildMI(BB, dl, TII->get(ARM64::CBNZW)).addReg(scratch).addMBB(loop1MBB);
BB->addSuccessor(loop1MBB);
BB->addSuccessor(exitMBB);
BB = exitMBB;
MI->eraseFromParent();
return BB;
}
MachineBasicBlock *
ARM64TargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
unsigned Size, unsigned BinOpcode) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
const BasicBlock *LLVM_BB = BB->getBasicBlock();
MachineFunction *MF = BB->getParent();
MachineFunction::iterator It = BB;
++It;
unsigned dest = MI->getOperand(0).getReg();
unsigned ptr = MI->getOperand(1).getReg();
unsigned incr = MI->getOperand(2).getReg();
AtomicOrdering Ord = static_cast<AtomicOrdering>(MI->getOperand(3).getImm());
DebugLoc dl = MI->getDebugLoc();
unsigned ldrOpc, strOpc;
getExclusiveOperation(Size, Ord, ldrOpc, strOpc);
MachineBasicBlock *loopMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *exitMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MF->insert(It, loopMBB);
MF->insert(It, exitMBB);
exitMBB->splice(exitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
MachineRegisterInfo &RegInfo = MF->getRegInfo();
unsigned scratch = RegInfo.createVirtualRegister(&ARM64::GPR32RegClass);
unsigned scratch2 = (!BinOpcode) ? incr :
RegInfo.createVirtualRegister(Size == 8 ? &ARM64::GPR64RegClass :
&ARM64::GPR32RegClass);
BB->addSuccessor(loopMBB);
BB = loopMBB;
BuildMI(BB, dl, TII->get(ldrOpc), dest).addReg(ptr);
if (BinOpcode) {
if (BinOpcode == ARM64::BICWrr || BinOpcode == ARM64::BICXrr)
BuildMI(BB, dl, TII->get(BinOpcode), scratch2).
addReg(incr).addReg(dest);
else
BuildMI(BB, dl, TII->get(BinOpcode), scratch2).
addReg(dest).addReg(incr);
}
BuildMI(BB, dl, TII->get(strOpc), scratch).addReg(scratch2).addReg(ptr);
BuildMI(BB, dl, TII->get(ARM64::CBNZW)).addReg(scratch).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(exitMBB);
BB = exitMBB;
MI->eraseFromParent();
return BB;
}
MachineBasicBlock *
ARM64TargetLowering::EmitAtomicBinary128(MachineInstr *MI,
MachineBasicBlock *BB,
unsigned BinOpcodeLo,
unsigned BinOpcodeHi) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
const BasicBlock *LLVM_BB = BB->getBasicBlock();
MachineFunction *MF = BB->getParent();
MachineFunction::iterator It = BB;
++It;
unsigned DestLo = MI->getOperand(0).getReg();
unsigned DestHi = MI->getOperand(1).getReg();
unsigned Ptr = MI->getOperand(2).getReg();
unsigned IncrLo = MI->getOperand(3).getReg();
unsigned IncrHi = MI->getOperand(4).getReg();
AtomicOrdering Ord = static_cast<AtomicOrdering>(MI->getOperand(5).getImm());
DebugLoc DL = MI->getDebugLoc();
unsigned LdrOpc, StrOpc;
getExclusiveOperation(16, Ord, LdrOpc, StrOpc);
MachineBasicBlock *LoopMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *ExitMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MF->insert(It, LoopMBB);
MF->insert(It, ExitMBB);
ExitMBB->splice(ExitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
ExitMBB->transferSuccessorsAndUpdatePHIs(BB);
MachineRegisterInfo &RegInfo = MF->getRegInfo();
unsigned ScratchRes = RegInfo.createVirtualRegister(&ARM64::GPR32RegClass);
unsigned ScratchLo = IncrLo, ScratchHi = IncrHi;
if (BinOpcodeLo) {
assert(BinOpcodeHi && "Expect neither or both opcodes to be defined");
ScratchLo = RegInfo.createVirtualRegister(&ARM64::GPR64RegClass);
ScratchHi = RegInfo.createVirtualRegister(&ARM64::GPR64RegClass);
}
BB->addSuccessor(LoopMBB);
BB = LoopMBB;
BuildMI(BB, DL, TII->get(LdrOpc), DestLo)
.addReg(DestHi, RegState::Define).addReg(Ptr);
if (BinOpcodeLo) {
if (BinOpcodeLo == ARM64::BICXrr) {
std::swap(IncrLo, DestLo);
std::swap(IncrHi, DestHi);
}
BuildMI(BB, DL, TII->get(BinOpcodeLo), ScratchLo)
.addReg(DestLo).addReg(IncrLo);
BuildMI(BB, DL, TII->get(BinOpcodeHi), ScratchHi)
.addReg(DestHi).addReg(IncrHi);
}
BuildMI(BB, DL, TII->get(StrOpc), ScratchRes)
.addReg(ScratchLo).addReg(ScratchHi).addReg(Ptr);
BuildMI(BB, DL, TII->get(ARM64::CBNZW)).addReg(ScratchRes).addMBB(LoopMBB);
BB->addSuccessor(LoopMBB);
BB->addSuccessor(ExitMBB);
BB = ExitMBB;
MI->eraseFromParent();
return BB;
}
MachineBasicBlock *
ARM64TargetLowering::EmitAtomicCmpSwap128(MachineInstr *MI,
MachineBasicBlock *BB) const {
unsigned DestLo = MI->getOperand(0).getReg();
unsigned DestHi = MI->getOperand(1).getReg();
unsigned Ptr = MI->getOperand(2).getReg();
unsigned OldValLo = MI->getOperand(3).getReg();
unsigned OldValHi = MI->getOperand(4).getReg();
unsigned NewValLo = MI->getOperand(5).getReg();
unsigned NewValHi = MI->getOperand(6).getReg();
AtomicOrdering Ord = static_cast<AtomicOrdering>(MI->getOperand(7).getImm());
unsigned ScratchRes = BB->getParent()->getRegInfo()
.createVirtualRegister(&ARM64::GPR32RegClass);
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
DebugLoc DL = MI->getDebugLoc();
unsigned LdrOpc, StrOpc;
getExclusiveOperation(16, Ord, LdrOpc, StrOpc);
MachineFunction *MF = BB->getParent();
const BasicBlock *LLVM_BB = BB->getBasicBlock();
MachineFunction::iterator It = BB;
++It;
MachineBasicBlock *Loop1MBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *Loop2MBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *ExitMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MF->insert(It, Loop1MBB);
MF->insert(It, Loop2MBB);
MF->insert(It, ExitMBB);
ExitMBB->splice(ExitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
ExitMBB->transferSuccessorsAndUpdatePHIs(BB);
BB->addSuccessor(Loop1MBB);
BB = Loop1MBB;
BuildMI(BB, DL, TII->get(LdrOpc), DestLo)
.addReg(DestHi, RegState::Define).addReg(Ptr);
BuildMI(BB, DL, TII->get(ARM64::SUBSXrr), ARM64::XZR)
.addReg(DestLo).addReg(OldValLo);
BuildMI(BB, DL, TII->get(ARM64::SBCXr), ARM64::XZR)
.addReg(DestHi).addReg(OldValHi);
BuildMI(BB, DL, TII->get(ARM64::Bcc)).addImm(ARM64CC::NE).addMBB(ExitMBB);
BB->addSuccessor(Loop2MBB);
BB->addSuccessor(ExitMBB);
BB = Loop2MBB;
BuildMI(BB, DL, TII->get(StrOpc), ScratchRes)
.addReg(NewValLo).addReg(NewValHi).addReg(Ptr);
BuildMI(BB, DL, TII->get(ARM64::CBNZW)).addReg(ScratchRes).addMBB(Loop1MBB);
BB->addSuccessor(Loop1MBB);
BB->addSuccessor(ExitMBB);
BB = ExitMBB;
MI->eraseFromParent();
return BB;
}
MachineBasicBlock *
ARM64TargetLowering::EmitAtomicMinMax128(MachineInstr *MI,
MachineBasicBlock *BB,
unsigned CondCode) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
const BasicBlock *LLVM_BB = BB->getBasicBlock();
MachineFunction *MF = BB->getParent();
MachineFunction::iterator It = BB;
++It;
unsigned DestLo = MI->getOperand(0).getReg();
unsigned DestHi = MI->getOperand(1).getReg();
unsigned Ptr = MI->getOperand(2).getReg();
unsigned IncrLo = MI->getOperand(3).getReg();
unsigned IncrHi = MI->getOperand(4).getReg();
AtomicOrdering Ord = static_cast<AtomicOrdering>(MI->getOperand(5).getImm());
DebugLoc DL = MI->getDebugLoc();
unsigned LdrOpc, StrOpc;
getExclusiveOperation(16, Ord, LdrOpc, StrOpc);
MachineBasicBlock *LoopMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *ExitMBB = MF->CreateMachineBasicBlock(LLVM_BB);
MF->insert(It, LoopMBB);
MF->insert(It, ExitMBB);
ExitMBB->splice(ExitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
ExitMBB->transferSuccessorsAndUpdatePHIs(BB);
MachineRegisterInfo &RegInfo = MF->getRegInfo();
unsigned ScratchRes = RegInfo.createVirtualRegister(&ARM64::GPR32RegClass);
unsigned ScratchLo = RegInfo.createVirtualRegister(&ARM64::GPR64RegClass);
unsigned ScratchHi = RegInfo.createVirtualRegister(&ARM64::GPR64RegClass);
BB->addSuccessor(LoopMBB);
BB = LoopMBB;
BuildMI(BB, DL, TII->get(LdrOpc), DestLo)
.addReg(DestHi, RegState::Define).addReg(Ptr);
BuildMI(BB, DL, TII->get(ARM64::SUBSXrr), ARM64::XZR)
.addReg(DestLo).addReg(IncrLo);
BuildMI(BB, DL, TII->get(ARM64::SBCXr), ARM64::XZR)
.addReg(DestHi).addReg(IncrHi);
BuildMI(BB, DL, TII->get(ARM64::CSELXr), ScratchLo)
.addReg(DestLo).addReg(IncrLo).addImm(CondCode);
BuildMI(BB, DL, TII->get(ARM64::CSELXr), ScratchHi)
.addReg(DestHi).addReg(IncrHi).addImm(CondCode);
BuildMI(BB, DL, TII->get(StrOpc), ScratchRes)
.addReg(ScratchLo).addReg(ScratchHi).addReg(Ptr);
BuildMI(BB, DL, TII->get(ARM64::CBNZW)).addReg(ScratchRes).addMBB(LoopMBB);
BB->addSuccessor(LoopMBB);
BB->addSuccessor(ExitMBB);
BB = ExitMBB;
MI->eraseFromParent();
return BB;
}
MachineBasicBlock *
ARM64TargetLowering::EmitF128CSEL(MachineInstr *MI,
MachineBasicBlock *MBB) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
MachineFunction *MF = MBB->getParent();
const BasicBlock *LLVM_BB = MBB->getBasicBlock();
DebugLoc DL = MI->getDebugLoc();
MachineFunction::iterator It = MBB;
++It;
unsigned DestReg = MI->getOperand(0).getReg();
unsigned IfTrueReg = MI->getOperand(1).getReg();
unsigned IfFalseReg = MI->getOperand(2).getReg();
unsigned CondCode = MI->getOperand(3).getImm();
bool CPSRKilled = MI->getOperand(4).isKill();
MachineBasicBlock *TrueBB = MF->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *EndBB = MF->CreateMachineBasicBlock(LLVM_BB);
MF->insert(It, TrueBB);
MF->insert(It, EndBB);
EndBB->splice(EndBB->begin(), MBB,
llvm::next(MachineBasicBlock::iterator(MI)),
MBB->end());
EndBB->transferSuccessorsAndUpdatePHIs(MBB);
BuildMI(MBB, DL, TII->get(ARM64::Bcc)).addImm(CondCode).addMBB(TrueBB);
BuildMI(MBB, DL, TII->get(ARM64::B)).addMBB(EndBB);
MBB->addSuccessor(TrueBB);
MBB->addSuccessor(EndBB);
TrueBB->addSuccessor(EndBB);
if (!CPSRKilled) {
TrueBB->addLiveIn(ARM64::CPSR);
EndBB->addLiveIn(ARM64::CPSR);
}
BuildMI(*EndBB, EndBB->begin(), DL, TII->get(ARM64::PHI), DestReg)
.addReg(IfTrueReg).addMBB(TrueBB)
.addReg(IfFalseReg).addMBB(MBB);
MI->eraseFromParent();
return EndBB;
}
MachineBasicBlock *
ARM64TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *BB) const {
switch (MI->getOpcode()) {
default:
#ifndef NDEBUG
MI->dump();
#endif
assert(0 && "Unexpected instruction for custom inserter!");
break;
case ARM64::ATOMIC_LOAD_ADD_I8:
return EmitAtomicBinary(MI, BB, 1, ARM64::ADDWrr);
case ARM64::ATOMIC_LOAD_ADD_I16:
return EmitAtomicBinary(MI, BB, 2, ARM64::ADDWrr);
case ARM64::ATOMIC_LOAD_ADD_I32:
return EmitAtomicBinary(MI, BB, 4, ARM64::ADDWrr);
case ARM64::ATOMIC_LOAD_ADD_I64:
return EmitAtomicBinary(MI, BB, 8, ARM64::ADDXrr);
case ARM64::ATOMIC_LOAD_ADD_I128:
return EmitAtomicBinary128(MI, BB, ARM64::ADDSXrr, ARM64::ADCXr);
case ARM64::ATOMIC_LOAD_AND_I8:
return EmitAtomicBinary(MI, BB, 1, ARM64::ANDWrr);
case ARM64::ATOMIC_LOAD_AND_I16:
return EmitAtomicBinary(MI, BB, 2, ARM64::ANDWrr);
case ARM64::ATOMIC_LOAD_AND_I32:
return EmitAtomicBinary(MI, BB, 4, ARM64::ANDWrr);
case ARM64::ATOMIC_LOAD_AND_I64:
return EmitAtomicBinary(MI, BB, 8, ARM64::ANDXrr);
case ARM64::ATOMIC_LOAD_AND_I128:
return EmitAtomicBinary128(MI, BB, ARM64::ANDXrr, ARM64::ANDXrr);
case ARM64::ATOMIC_LOAD_OR_I8:
return EmitAtomicBinary(MI, BB, 1, ARM64::ORRWrr);
case ARM64::ATOMIC_LOAD_OR_I16:
return EmitAtomicBinary(MI, BB, 2, ARM64::ORRWrr);
case ARM64::ATOMIC_LOAD_OR_I32:
return EmitAtomicBinary(MI, BB, 4, ARM64::ORRWrr);
case ARM64::ATOMIC_LOAD_OR_I64:
return EmitAtomicBinary(MI, BB, 8, ARM64::ORRXrr);
case ARM64::ATOMIC_LOAD_OR_I128:
return EmitAtomicBinary128(MI, BB, ARM64::ORRXrr, ARM64::ORRXrr);
case ARM64::ATOMIC_LOAD_XOR_I8:
return EmitAtomicBinary(MI, BB, 1, ARM64::EORWrr);
case ARM64::ATOMIC_LOAD_XOR_I16:
return EmitAtomicBinary(MI, BB, 2, ARM64::EORWrr);
case ARM64::ATOMIC_LOAD_XOR_I32:
return EmitAtomicBinary(MI, BB, 4, ARM64::EORWrr);
case ARM64::ATOMIC_LOAD_XOR_I64:
return EmitAtomicBinary(MI, BB, 8, ARM64::EORXrr);
case ARM64::ATOMIC_LOAD_XOR_I128:
return EmitAtomicBinary128(MI, BB, ARM64::EORXrr, ARM64::EORXrr);
case ARM64::ATOMIC_LOAD_NAND_I8:
return EmitAtomicBinary(MI, BB, 1, ARM64::BICWrr);
case ARM64::ATOMIC_LOAD_NAND_I16:
return EmitAtomicBinary(MI, BB, 2, ARM64::BICWrr);
case ARM64::ATOMIC_LOAD_NAND_I32:
return EmitAtomicBinary(MI, BB, 4, ARM64::BICWrr);
case ARM64::ATOMIC_LOAD_NAND_I64:
return EmitAtomicBinary(MI, BB, 8, ARM64::BICXrr);
case ARM64::ATOMIC_LOAD_NAND_I128:
return EmitAtomicBinary128(MI, BB, ARM64::BICXrr, ARM64::BICXrr);
case ARM64::ATOMIC_LOAD_SUB_I8:
return EmitAtomicBinary(MI, BB, 1, ARM64::SUBWrr);
case ARM64::ATOMIC_LOAD_SUB_I16:
return EmitAtomicBinary(MI, BB, 2, ARM64::SUBWrr);
case ARM64::ATOMIC_LOAD_SUB_I32:
return EmitAtomicBinary(MI, BB, 4, ARM64::SUBWrr);
case ARM64::ATOMIC_LOAD_SUB_I64:
return EmitAtomicBinary(MI, BB, 8, ARM64::SUBXrr);
case ARM64::ATOMIC_LOAD_SUB_I128:
return EmitAtomicBinary128(MI, BB, ARM64::SUBSXrr, ARM64::SBCXr);
case ARM64::ATOMIC_LOAD_MIN_I128:
return EmitAtomicMinMax128(MI, BB, ARM64CC::LT);
case ARM64::ATOMIC_LOAD_MAX_I128:
return EmitAtomicMinMax128(MI, BB, ARM64CC::GT);
case ARM64::ATOMIC_LOAD_UMIN_I128:
return EmitAtomicMinMax128(MI, BB, ARM64CC::CC);
case ARM64::ATOMIC_LOAD_UMAX_I128:
return EmitAtomicMinMax128(MI, BB, ARM64CC::HI);
case ARM64::ATOMIC_SWAP_I8: return EmitAtomicBinary(MI, BB, 1, 0);
case ARM64::ATOMIC_SWAP_I16: return EmitAtomicBinary(MI, BB, 2, 0);
case ARM64::ATOMIC_SWAP_I32: return EmitAtomicBinary(MI, BB, 4, 0);
case ARM64::ATOMIC_SWAP_I64: return EmitAtomicBinary(MI, BB, 8, 0);
case ARM64::ATOMIC_SWAP_I128: return EmitAtomicBinary128(MI, BB, 0, 0);
case ARM64::ATOMIC_CMP_SWAP_I8: return EmitAtomicCmpSwap(MI, BB, 1);
case ARM64::ATOMIC_CMP_SWAP_I16: return EmitAtomicCmpSwap(MI, BB, 2);
case ARM64::ATOMIC_CMP_SWAP_I32: return EmitAtomicCmpSwap(MI, BB, 4);
case ARM64::ATOMIC_CMP_SWAP_I64: return EmitAtomicCmpSwap(MI, BB, 8);
case ARM64::ATOMIC_CMP_SWAP_I128: return EmitAtomicCmpSwap128(MI, BB);
case ARM64::F128CSEL: return EmitF128CSEL(MI, BB);
case TargetOpcode::STACKMAP:
case TargetOpcode::PATCHPOINT:
return emitPatchPoint(MI, BB);
}
llvm_unreachable("Unexpected instruction for custom inserter!");
}
static ARM64CC::CondCode changeIntCCToARM64CC(ISD::CondCode CC) {
switch (CC) {
default: llvm_unreachable("Unknown condition code!");
case ISD::SETNE: return ARM64CC::NE;
case ISD::SETEQ: return ARM64CC::EQ;
case ISD::SETGT: return ARM64CC::GT;
case ISD::SETGE: return ARM64CC::GE;
case ISD::SETLT: return ARM64CC::LT;
case ISD::SETLE: return ARM64CC::LE;
case ISD::SETUGT: return ARM64CC::HI;
case ISD::SETUGE: return ARM64CC::CS;
case ISD::SETULT: return ARM64CC::CC;
case ISD::SETULE: return ARM64CC::LS;
}
}
static void changeFPCCToARM64CC(ISD::CondCode CC, ARM64CC::CondCode &CondCode,
ARM64CC::CondCode &CondCode2) {
CondCode2 = ARM64CC::AL;
switch (CC) {
default: llvm_unreachable("Unknown FP condition!");
case ISD::SETEQ:
case ISD::SETOEQ: CondCode = ARM64CC::EQ; break;
case ISD::SETGT:
case ISD::SETOGT: CondCode = ARM64CC::GT; break;
case ISD::SETGE:
case ISD::SETOGE: CondCode = ARM64CC::GE; break;
case ISD::SETOLT: CondCode = ARM64CC::MI; break;
case ISD::SETOLE: CondCode = ARM64CC::LS; break;
case ISD::SETONE: CondCode = ARM64CC::MI; CondCode2 = ARM64CC::GT; break;
case ISD::SETO: CondCode = ARM64CC::VC; break;
case ISD::SETUO: CondCode = ARM64CC::VS; break;
case ISD::SETUEQ: CondCode = ARM64CC::EQ; CondCode2 = ARM64CC::VS; break;
case ISD::SETUGT: CondCode = ARM64CC::HI; break;
case ISD::SETUGE: CondCode = ARM64CC::PL; break;
case ISD::SETLT:
case ISD::SETULT: CondCode = ARM64CC::LT; break;
case ISD::SETLE:
case ISD::SETULE: CondCode = ARM64CC::LE; break;
case ISD::SETNE:
case ISD::SETUNE: CondCode = ARM64CC::NE; break;
}
}
static bool isLegalArithImmed(uint64_t C) {
return (C >> 12 == 0) || ((C & 0xFFFULL) == 0 && C >> 24 == 0);
}
static SDValue emitComparison(SDValue LHS, SDValue RHS, SDLoc dl,
SelectionDAG &DAG) {
EVT VT = LHS.getValueType();
if (VT.isFloatingPoint())
return DAG.getNode(ARM64ISD::FCMP, dl, VT, LHS, RHS);
return DAG.getNode(ARM64ISD::SUBS, dl, DAG.getVTList(VT, MVT::i32),
LHS, RHS).getValue(1);
}
static SDValue getARM64Cmp(SDValue LHS, SDValue RHS, ISD::CondCode CC,
SDValue &ARM64cc, SelectionDAG &DAG, SDLoc dl) {
if (ConstantSDNode *RHSC = dyn_cast<ConstantSDNode>(RHS.getNode())) {
EVT VT = RHS.getValueType();
uint64_t C = RHSC->getZExtValue();
if (!isLegalArithImmed(C)) {
switch (CC) {
default: break;
case ISD::SETLT:
case ISD::SETGE:
if ((VT == MVT::i32 &&
C != 0x80000000 && isLegalArithImmed((uint32_t)(C-1))) ||
(VT == MVT::i64 &&
C != 0x80000000ULL && isLegalArithImmed(C-1ULL))) {
CC = (CC == ISD::SETLT) ? ISD::SETLE : ISD::SETGT;
C = (VT == MVT::i32) ? (uint32_t)(C-1) : C-1;
RHS = DAG.getConstant(C, VT);
}
break;
case ISD::SETULT:
case ISD::SETUGE:
if ((VT == MVT::i32 &&
C != 0 && isLegalArithImmed((uint32_t)(C-1))) ||
(VT == MVT::i64 &&
C != 0ULL && isLegalArithImmed(C-1ULL))) {
CC = (CC == ISD::SETULT) ? ISD::SETULE : ISD::SETUGT;
C = (VT == MVT::i32) ? (uint32_t)(C-1) : C-1;
RHS = DAG.getConstant(C, VT);
}
break;
case ISD::SETLE:
case ISD::SETGT:
if ((VT == MVT::i32 &&
C != 0x7fffffff && isLegalArithImmed((uint32_t)(C+1))) ||
(VT == MVT::i64 &&
C != 0x7ffffffffffffffULL && isLegalArithImmed(C+1ULL))) {
CC = (CC == ISD::SETLE) ? ISD::SETLT : ISD::SETGE;
C = (VT == MVT::i32) ? (uint32_t)(C+1) : C+1;
RHS = DAG.getConstant(C, VT);
}
break;
case ISD::SETULE:
case ISD::SETUGT:
if ((VT == MVT::i32 &&
C != 0xffffffff && isLegalArithImmed((uint32_t)(C+1))) ||
(VT == MVT::i64 &&
C != 0xfffffffffffffffULL && isLegalArithImmed(C+1ULL))) {
CC = (CC == ISD::SETULE) ? ISD::SETULT : ISD::SETUGE;
C = (VT == MVT::i32) ? (uint32_t)(C+1) : C+1;
RHS = DAG.getConstant(C, VT);
}
break;
}
}
}
SDValue Cmp = emitComparison(LHS, RHS, dl, DAG);
ARM64CC::CondCode ARM64CC = changeIntCCToARM64CC(CC);
ARM64cc = DAG.getConstant(ARM64CC, MVT::i32);
return Cmp;
}
static std::pair<SDValue, SDValue>
getARM64XALUOOp(ARM64CC::CondCode &CC, SDValue Op, SelectionDAG &DAG) {
assert((Op.getValueType() == MVT::i32 || Op.getValueType() == MVT::i64) &&
"Unsupported value type");
SDValue Value, Overflow;
SDLoc DL(Op);
SDValue LHS = Op.getOperand(0);
SDValue RHS = Op.getOperand(1);
unsigned Opc = 0;
switch (Op.getOpcode()) {
default: llvm_unreachable("Unknown overflow instruction!");
case ISD::SADDO: Opc = ARM64ISD::ADDS; CC = ARM64CC::VS; break;
case ISD::UADDO: Opc = ARM64ISD::ADDS; CC = ARM64CC::CS; break;
case ISD::SSUBO: Opc = ARM64ISD::SUBS; CC = ARM64CC::VS; break;
case ISD::USUBO: Opc = ARM64ISD::SUBS; CC = ARM64CC::CC; break;
case ISD::SMULO:
case ISD::UMULO: {
CC = ARM64CC::NE;
bool IsSigned = (Op.getOpcode() == ISD::SMULO) ? true : false;
if (Op.getValueType() == MVT::i32) {
unsigned ExtendOpc = IsSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;
LHS = DAG.getNode(ExtendOpc, DL, MVT::i64, LHS);
RHS = DAG.getNode(ExtendOpc, DL, MVT::i64, RHS);
SDValue Mul = DAG.getNode(ISD::MUL, DL, MVT::i64, LHS, RHS);
SDValue Add = DAG.getNode(ISD::ADD, DL, MVT::i64, Mul,
DAG.getConstant(0, MVT::i64));
Value = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, Add);
if (IsSigned) {
SDValue UpperBits = DAG.getNode(ISD::SRL, DL, MVT::i64, Add,
DAG.getConstant(32, MVT::i32));
UpperBits = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, UpperBits);
SDValue LowerBits = DAG.getNode(ISD::SRA, DL, MVT::i32, Value,
DAG.getConstant(31, MVT::i32));
SDVTList VTs = DAG.getVTList(MVT::i32, MVT::i32);
Overflow = DAG.getNode(ARM64ISD::SUBS, DL, VTs, UpperBits, LowerBits)
.getValue(1);
} else {
SDValue UpperBits = DAG.getNode(ISD::SRL, DL, MVT::i64, Mul,
DAG.getConstant(32, MVT::i32));
SDVTList VTs = DAG.getVTList(MVT::i64, MVT::i32);
Overflow = DAG.getNode(ARM64ISD::SUBS, DL, VTs,
DAG.getConstant(0, MVT::i64), UpperBits)
.getValue(1);
}
break;
}
assert(Op.getValueType() == MVT::i64 && "Expected an i64 value type");
Value = DAG.getNode(ISD::MUL, DL, MVT::i64, LHS, RHS);
if (IsSigned) {
SDValue UpperBits = DAG.getNode(ISD::MULHS, DL, MVT::i64, LHS, RHS);
SDValue LowerBits = DAG.getNode(ISD::SRA, DL, MVT::i64, Value,
DAG.getConstant(63, MVT::i32));
SDVTList VTs = DAG.getVTList(MVT::i64, MVT::i32);
Overflow = DAG.getNode(ARM64ISD::SUBS, DL, VTs, UpperBits, LowerBits)
.getValue(1);
} else {
SDValue UpperBits = DAG.getNode(ISD::MULHU, DL, MVT::i64, LHS, RHS);
SDVTList VTs = DAG.getVTList(MVT::i64, MVT::i32);
Overflow = DAG.getNode(ARM64ISD::SUBS, DL, VTs,
DAG.getConstant(0, MVT::i64), UpperBits)
.getValue(1);
}
break;
}
}
if (Opc) {
SDVTList VTs = DAG.getVTList(Op->getValueType(0), MVT::i32);
Value = DAG.getNode(Opc, DL, VTs, LHS, RHS);
Overflow = Value.getValue(1);
}
return std::make_pair(Value, Overflow);
}
SDValue
ARM64TargetLowering::LowerF128Call(SDValue Op, SelectionDAG &DAG,
RTLIB::Libcall Call) const {
SmallVector<SDValue, 2> Ops;
for (unsigned i = 0, e = Op->getNumOperands(); i != e; ++i)
Ops.push_back(Op.getOperand(i));
return makeLibCall(DAG, Call, MVT::f128, &Ops[0],
Ops.size(), false, SDLoc(Op)).first;
}
static SDValue LowerXOR(SDValue Op, SelectionDAG &DAG) {
SDValue Sel = Op.getOperand(0);
SDValue Other = Op.getOperand(1);
if (Sel.getOpcode() != ISD::SELECT_CC)
std::swap(Sel, Other);
if (Sel.getOpcode() != ISD::SELECT_CC)
return Op;
ISD::CondCode CC = cast<CondCodeSDNode>(Sel.getOperand(4))->get();
SDValue LHS = Sel.getOperand(0);
SDValue RHS = Sel.getOperand(1);
SDValue TVal = Sel.getOperand(2);
SDValue FVal = Sel.getOperand(3);
SDLoc dl(Sel);
if (LHS.getValueType() != MVT::i32 && LHS.getValueType() != MVT::i64)
return Op;
ConstantSDNode *CFVal = dyn_cast<ConstantSDNode>(FVal);
ConstantSDNode *CTVal = dyn_cast<ConstantSDNode>(TVal);
if (!CFVal || !CTVal)
return Op;
if (CTVal->isAllOnesValue() && CFVal->isNullValue()) {
std::swap(TVal, FVal);
std::swap(CTVal, CFVal);
CC = ISD::getSetCCInverse(CC, true);
}
if (CTVal->isNullValue() && CFVal->isAllOnesValue()) {
SDValue CCVal;
SDValue Cmp = getARM64Cmp(LHS, RHS, CC, CCVal, DAG, dl);
FVal = Other;
TVal = DAG.getNode(ISD::XOR, dl, Other.getValueType(), Other,
DAG.getConstant(-1ULL, Other.getValueType()));
return DAG.getNode(ARM64ISD::CSEL, dl, Sel.getValueType(),
FVal, TVal, CCVal, Cmp);
}
return Op;
}
static SDValue LowerADDC_ADDE_SUBC_SUBE(SDValue Op, SelectionDAG &DAG) {
EVT VT = Op.getValueType();
if (!DAG.getTargetLoweringInfo().isTypeLegal(VT))
return SDValue();
SDVTList VTs = DAG.getVTList(VT, MVT::i32);
unsigned Opc;
bool ExtraOp = false;
switch (Op.getOpcode()) {
default: assert(0 && "Invalid code");
case ISD::ADDC: Opc = ARM64ISD::ADDS; break;
case ISD::SUBC: Opc = ARM64ISD::SUBS; break;
case ISD::ADDE: Opc = ARM64ISD::ADCS; ExtraOp = true; break;
case ISD::SUBE: Opc = ARM64ISD::SBCS; ExtraOp = true; break;
}
if (!ExtraOp)
return DAG.getNode(Opc, SDLoc(Op), VTs, Op.getOperand(0),
Op.getOperand(1));
return DAG.getNode(Opc, SDLoc(Op), VTs, Op.getOperand(0),
Op.getOperand(1), Op.getOperand(2));
}
static SDValue LowerXALUO(SDValue Op, SelectionDAG &DAG) {
if (!DAG.getTargetLoweringInfo().isTypeLegal(Op.getValueType()))
return SDValue();
ARM64CC::CondCode CC;
SDValue Value, Overflow;
llvm::tie(Value, Overflow) = getARM64XALUOOp(CC, Op, DAG);
SDValue TVal = DAG.getConstant(1, MVT::i32);
SDValue FVal = DAG.getConstant(0, MVT::i32);
SDValue CCVal = DAG.getConstant(getInvertedCondCode(CC), MVT::i32);
Overflow = DAG.getNode(ARM64ISD::CSEL, SDLoc(Op), MVT::i32, FVal, TVal, CCVal,
Overflow);
SDVTList VTs = DAG.getVTList(Op.getValueType(), MVT::i32);
return DAG.getNode(ISD::MERGE_VALUES, SDLoc(Op), VTs, Value, Overflow);
}
static SDValue LowerPREFETCH(SDValue Op, SelectionDAG &DAG) {
SDLoc DL(Op);
unsigned IsWrite = cast<ConstantSDNode>(Op.getOperand(2))->getZExtValue();
unsigned Locality = cast<ConstantSDNode>(Op.getOperand(3))->getZExtValue();
bool IsStream = !Locality;
if (Locality) {
assert(Locality <= 3 && "Prefetch locality out-of-range");
Locality = 3 - Locality;
}
unsigned PrfOp = (IsWrite << 4) | (Locality << 1) | IsStream; return DAG.getNode(ARM64ISD::PREFETCH, DL, MVT::Other, Op.getOperand(0),
DAG.getConstant(PrfOp, MVT::i32), Op.getOperand(1));
}
SDValue
ARM64TargetLowering::LowerFP_EXTEND(SDValue Op, SelectionDAG &DAG) const {
assert(Op.getValueType() == MVT::f128 && "Unexpected lowering");
RTLIB::Libcall LC;
LC = RTLIB::getFPEXT(Op.getOperand(0).getValueType(), Op.getValueType());
return LowerF128Call(Op, DAG, LC);
}
SDValue
ARM64TargetLowering::LowerFP_ROUND(SDValue Op, SelectionDAG &DAG) const {
if (Op.getOperand(0).getValueType() != MVT::f128) {
return Op;
}
RTLIB::Libcall LC;
LC = RTLIB::getFPROUND(Op.getOperand(0).getValueType(), Op.getValueType());
SDValue SrcVal = Op.getOperand(0);
return makeLibCall(DAG, LC, Op.getValueType(), &SrcVal, 1,
false, SDLoc(Op)).first;
}
static SDValue LowerVectorFP_TO_INT(SDValue Op, SelectionDAG &DAG) {
EVT InVT = Op.getOperand(0).getValueType();
EVT VT = Op.getValueType();
if (VT.getSizeInBits() == InVT.getSizeInBits())
return Op;
if (InVT == MVT::v2f64) {
SDLoc dl(Op);
SDValue Cv = DAG.getNode(Op.getOpcode(), dl, MVT::v2i64, Op.getOperand(0));
return DAG.getNode(ISD::TRUNCATE, dl, VT, Cv);
}
return SDValue();
}
SDValue
ARM64TargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const {
if (Op.getOperand(0).getValueType().isVector())
return LowerVectorFP_TO_INT(Op, DAG);
if (Op.getOperand(0).getValueType() != MVT::f128) {
return Op;
}
RTLIB::Libcall LC;
if (Op.getOpcode() == ISD::FP_TO_SINT)
LC = RTLIB::getFPTOSINT(Op.getOperand(0).getValueType(), Op.getValueType());
else
LC = RTLIB::getFPTOUINT(Op.getOperand(0).getValueType(), Op.getValueType());
return LowerF128Call(Op, DAG, LC);
}
static SDValue LowerVectorINT_TO_FP(SDValue Op, SelectionDAG &DAG) {
EVT VT = Op.getValueType();
SDLoc dl(Op);
SDValue In = Op.getOperand(0);
EVT InVT = In.getValueType();
if (VT == MVT::v2f32 && InVT == MVT::v2i32)
return Op;
if (VT == MVT::v2f64) {
unsigned Opc = Op.getOpcode() == ISD::UINT_TO_FP ? ISD::ZERO_EXTEND :
ISD::SIGN_EXTEND;
assert(Op.getNumOperands() == 1 && "FP conversions take one argument");
SDValue Promoted = DAG.getNode(Opc, dl, MVT::v2i64, Op.getOperand(0));
return DAG.getNode(Op.getOpcode(), dl, Op.getValueType(), Promoted);
}
std::vector<SDValue> BuildVectorOps;
for (unsigned i = 0; i < VT.getVectorNumElements(); ++i) {
SDValue Sclr = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, MVT::i64, In,
DAG.getConstant(i, MVT::i64));
Sclr = DAG.getNode(Op->getOpcode(), dl, MVT::f32, Sclr);
BuildVectorOps.push_back(Sclr);
}
return DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &BuildVectorOps[0],
BuildVectorOps.size());
}
SDValue
ARM64TargetLowering::LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const {
if (Op.getValueType().isVector())
return LowerVectorINT_TO_FP(Op, DAG);
if (Op.getOperand(0).getValueType() == MVT::i128)
return SDValue();
if (Op.getValueType() != MVT::f128)
return Op;
RTLIB::Libcall LC;
if (Op.getOpcode() == ISD::SINT_TO_FP)
LC = RTLIB::getSINTTOFP(Op.getOperand(0).getValueType(), Op.getValueType());
else
LC = RTLIB::getUINTTOFP(Op.getOperand(0).getValueType(), Op.getValueType());
return LowerF128Call(Op, DAG, LC);
}
SDValue ARM64TargetLowering::LowerFSINCOS(SDValue Op, SelectionDAG &DAG) const {
SDLoc dl(Op);
SDValue Arg = Op.getOperand(0);
EVT ArgVT = Arg.getValueType();
Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext());
ArgListTy Args;
ArgListEntry Entry;
Entry.Node = Arg;
Entry.Ty = ArgTy;
Entry.isSExt = false;
Entry.isZExt = false;
Args.push_back(Entry);
const char *LibcallName = (ArgVT == MVT::f64)
? "__sincos_stret" : "__sincosf_stret";
SDValue Callee = DAG.getExternalSymbol(LibcallName, getPointerTy());
StructType *RetTy = StructType::get(ArgTy, ArgTy, NULL);
TargetLowering::
CallLoweringInfo CLI(DAG.getEntryNode(), RetTy,
false, false, false, false, 0,
CallingConv::Fast, false,
false, true,
Callee, Args, DAG, dl);
std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI);
return CallResult.first;
}
SDValue ARM64TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG)const{
switch (Op.getOpcode()) {
default:
llvm_unreachable("unimplemented operand");
return SDValue();
case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
case ISD::SETCC: return LowerSETCC(Op, DAG);
case ISD::BR_CC: return LowerBR_CC(Op, DAG);
case ISD::SELECT: return LowerSELECT(Op, DAG);
case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG);
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
case ISD::VASTART: return LowerVASTART(Op, DAG);
case ISD::VACOPY: return LowerVACOPY(Op, DAG);
case ISD::VAARG: return LowerVAARG(Op, DAG);
case ISD::ADDC:
case ISD::ADDE:
case ISD::SUBC:
case ISD::SUBE: return LowerADDC_ADDE_SUBC_SUBE(Op, DAG);
case ISD::SADDO:
case ISD::UADDO:
case ISD::SSUBO:
case ISD::USUBO:
case ISD::SMULO:
case ISD::UMULO: return LowerXALUO(Op, DAG);
case ISD::FADD: return LowerF128Call(Op, DAG, RTLIB::ADD_F128);
case ISD::FSUB: return LowerF128Call(Op, DAG, RTLIB::SUB_F128);
case ISD::FMUL: return LowerF128Call(Op, DAG, RTLIB::MUL_F128);
case ISD::FDIV: return LowerF128Call(Op, DAG, RTLIB::DIV_F128);
case ISD::FP_ROUND: return LowerFP_ROUND(Op, DAG);
case ISD::FP_EXTEND: return LowerFP_EXTEND(Op, DAG);
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG);
case ISD::INSERT_VECTOR_ELT: return LowerINSERT_VECTOR_ELT(Op, DAG);
case ISD::EXTRACT_VECTOR_ELT: return LowerEXTRACT_VECTOR_ELT(Op, DAG);
case ISD::SCALAR_TO_VECTOR: return LowerSCALAR_TO_VECTOR(Op, DAG);
case ISD::BUILD_VECTOR: return LowerBUILD_VECTOR(Op, DAG);
case ISD::VECTOR_SHUFFLE: return LowerVECTOR_SHUFFLE(Op, DAG);
case ISD::EXTRACT_SUBVECTOR: return LowerEXTRACT_SUBVECTOR(Op, DAG);
case ISD::SRA:
case ISD::SRL:
case ISD::SHL: return LowerVectorSRA_SRL_SHL(Op, DAG);
case ISD::SHL_PARTS: return LowerShiftLeftParts(Op, DAG);
case ISD::SRL_PARTS:
case ISD::SRA_PARTS: return LowerShiftRightParts(Op, DAG);
case ISD::CTPOP: return LowerCTPOP(Op, DAG);
case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG);
case ISD::AND: return LowerVectorAND(Op, DAG);
case ISD::OR: return LowerVectorOR(Op, DAG);
case ISD::XOR: return LowerXOR(Op, DAG);
case ISD::PREFETCH: return LowerPREFETCH(Op, DAG);
case ISD::SINT_TO_FP:
case ISD::UINT_TO_FP: return LowerINT_TO_FP(Op, DAG);
case ISD::FP_TO_SINT:
case ISD::FP_TO_UINT: return LowerFP_TO_INT(Op, DAG);
case ISD::FSINCOS: return LowerFSINCOS(Op, DAG);
}
}
unsigned ARM64TargetLowering::getFunctionAlignment(const Function *F) const {
return 2;
}
#include "ARM64GenCallingConv.inc"
CCAssignFn *ARM64TargetLowering::CCAssignFnForCall(CallingConv::ID CC,
bool IsVarArg) const {
switch (CC) {
default:
llvm_unreachable("Unsupported calling convention.");
case CallingConv::WebKit_JS:
return CC_ARM64_WebKit_JS;
case CallingConv::C:
case CallingConv::Fast:
if (!Subtarget->isTargetDarwin())
return CC_ARM64_AAPCS;
return IsVarArg ? CC_ARM64_DarwinPCS_VarArg : CC_ARM64_DarwinPCS;
}
}
SDValue
ARM64TargetLowering::LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc DL,
SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const {
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
getTargetMachine(), ArgLocs, *DAG.getContext());
unsigned NumArgs = Ins.size();
Function::const_arg_iterator CurOrigArg = MF.getFunction()->arg_begin();
unsigned CurArgIdx = 0;
for (unsigned i = 0; i != NumArgs; ++i) {
MVT ValVT = Ins[i].VT;
std::advance(CurOrigArg, Ins[i].OrigArgIndex - CurArgIdx);
CurArgIdx = Ins[i].OrigArgIndex;
EVT ActualVT = getValueType(CurOrigArg->getType(), true);
MVT ActualMVT = ActualVT.isSimple() ? ActualVT.getSimpleVT() : MVT::Other;
MVT LocVT = ValVT;
if (ActualMVT == MVT::i1 || ActualMVT == MVT::i8)
LocVT = MVT::i8;
else if (ActualMVT == MVT::i16)
LocVT = MVT::i16;
CCAssignFn *AssignFn = CCAssignFnForCall(CallConv, false);
bool Res = AssignFn(i, ValVT, LocVT, CCValAssign::Full, Ins[i].Flags,
CCInfo);
assert(!Res && "Call operand has unhandled type"); (void)Res;
}
SmallVector<SDValue, 16> ArgValues;
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
CCValAssign &VA = ArgLocs[i];
if (VA.isRegLoc()) {
EVT RegVT = VA.getLocVT();
SDValue ArgValue;
const TargetRegisterClass *RC;
if (RegVT == MVT::i32)
RC = &ARM64::GPR32RegClass;
else if (RegVT == MVT::i64)
RC = &ARM64::GPR64RegClass;
else if (RegVT == MVT::f32)
RC = &ARM64::FPR32RegClass;
else if (RegVT == MVT::f64 || RegVT == MVT::v1i64 ||
RegVT == MVT::v1f64 || RegVT == MVT::v2i32 ||
RegVT == MVT::v4i16 || RegVT == MVT::v8i8)
RC = &ARM64::FPR64RegClass;
else if (RegVT == MVT::v2i64 || RegVT == MVT::v4i32 ||
RegVT == MVT::v8i16 || RegVT == MVT::v16i8)
RC = &ARM64::FPR128RegClass;
else
llvm_unreachable("RegVT not supported by FORMAL_ARGUMENTS Lowering");
unsigned Reg = MF.addLiveIn(VA.getLocReg(), RC);
ArgValue = DAG.getCopyFromReg(Chain, DL, Reg, RegVT);
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
case CCValAssign::Full: break;
case CCValAssign::BCvt:
ArgValue = DAG.getNode(ISD::BITCAST, DL, VA.getValVT(), ArgValue);
break;
case CCValAssign::SExt:
ArgValue = DAG.getNode(ISD::AssertSext, DL, RegVT, ArgValue,
DAG.getValueType(VA.getValVT()));
ArgValue = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), ArgValue);
break;
case CCValAssign::ZExt:
ArgValue = DAG.getNode(ISD::AssertZext, DL, RegVT, ArgValue,
DAG.getValueType(VA.getValVT()));
ArgValue = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), ArgValue);
break;
}
InVals.push_back(ArgValue);
} else { assert(VA.isMemLoc() && "CCValAssign is neither reg nor mem");
unsigned ArgOffset = VA.getLocMemOffset();
unsigned ArgSize = VA.getLocVT().getSizeInBits()/8;
int FI = MFI->CreateFixedObject(ArgSize, ArgOffset, true);
SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
InVals.push_back(DAG.getLoad(VA.getValVT(), DL, Chain, FIN,
MachinePointerInfo::getFixedStack(FI),
false, false, false, 0));
}
}
if (isVarArg) {
if (!Subtarget->isTargetDarwin()) {
saveVarArgRegisters(CCInfo, DAG, DL, Chain);
}
ARM64FunctionInfo *AFI = MF.getInfo<ARM64FunctionInfo>();
unsigned StackOffset = CCInfo.getNextStackOffset();
StackOffset = ((StackOffset + 7) & ~7);
AFI->setVarArgsStackIndex(
MFI->CreateFixedObject(4, StackOffset, true));
}
return Chain;
}
void
ARM64TargetLowering::saveVarArgRegisters(CCState &CCInfo, SelectionDAG &DAG,
SDLoc DL, SDValue &Chain) const {
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
ARM64FunctionInfo *FuncInfo = MF.getInfo<ARM64FunctionInfo>();
SmallVector<SDValue, 8> MemOps;
static const uint16_t GPRArgRegs[]
= { ARM64::X0, ARM64::X1, ARM64::X2, ARM64::X3,
ARM64::X4, ARM64::X5, ARM64::X6, ARM64::X7 };
static const unsigned NumGPRArgRegs = array_lengthof(GPRArgRegs);
unsigned FirstVariadicGPR
= CCInfo.getFirstUnallocated(GPRArgRegs, NumGPRArgRegs);
static const uint16_t FPRArgRegs[]
= { ARM64::Q0, ARM64::Q1, ARM64::Q2, ARM64::Q3,
ARM64::Q4, ARM64::Q5, ARM64::Q6, ARM64::Q7 };
static const unsigned NumFPRArgRegs = array_lengthof(FPRArgRegs);
unsigned FirstVariadicFPR
= CCInfo.getFirstUnallocated(FPRArgRegs, NumFPRArgRegs);
unsigned GPRSaveSize = 8 * (NumGPRArgRegs - FirstVariadicGPR);
int GPRIdx = 0;
if (GPRSaveSize != 0) {
GPRIdx = MFI->CreateStackObject(GPRSaveSize, 8, false);
SDValue FIN = DAG.getFrameIndex(GPRIdx, getPointerTy());
for (unsigned i = FirstVariadicGPR; i < NumGPRArgRegs; ++i) {
unsigned VReg = MF.addLiveIn(GPRArgRegs[i], &ARM64::GPR64RegClass);
SDValue Val = DAG.getCopyFromReg(Chain, DL, VReg, MVT::i64);
SDValue Store = DAG.getStore(Val.getValue(1), DL, Val, FIN,
MachinePointerInfo::getStack(i * 8),
false, false, 0);
MemOps.push_back(Store);
FIN = DAG.getNode(ISD::ADD, DL, getPointerTy(), FIN,
DAG.getConstant(8, getPointerTy()));
}
}
unsigned FPRSaveSize = 16 * (NumFPRArgRegs - FirstVariadicFPR);
int FPRIdx = 0;
if (FPRSaveSize != 0) {
FPRIdx = MFI->CreateStackObject(FPRSaveSize, 16, false);
SDValue FIN = DAG.getFrameIndex(FPRIdx, getPointerTy());
for (unsigned i = FirstVariadicFPR; i < NumFPRArgRegs; ++i) {
unsigned VReg = MF.addLiveIn(FPRArgRegs[i], &ARM64::FPR128RegClass);
SDValue Val = DAG.getCopyFromReg(Chain, DL, VReg, MVT::v2i64);
SDValue Store = DAG.getStore(Val.getValue(1), DL, Val, FIN,
MachinePointerInfo::getStack(i * 16),
false, false, 0);
MemOps.push_back(Store);
FIN = DAG.getNode(ISD::ADD, DL, getPointerTy(), FIN,
DAG.getConstant(16, getPointerTy()));
}
}
FuncInfo->setVarArgsGPRIndex(GPRIdx);
FuncInfo->setVarArgsGPRSize(GPRSaveSize);
FuncInfo->setVarArgsFPRIndex(FPRIdx);
FuncInfo->setVarArgsFPRSize(FPRSaveSize);
if (!MemOps.empty()) {
Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other, &MemOps[0],
MemOps.size());
}
}
SDValue
ARM64TargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc DL, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals,
bool isThisReturn, SDValue ThisVal) const {
CCAssignFn *RetCC = CallConv == CallingConv::WebKit_JS ? RetCC_ARM64_WebKit_JS
: RetCC_ARM64_AAPCS;
SmallVector<CCValAssign, 16> RVLocs;
CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
getTargetMachine(), RVLocs, *DAG.getContext());
CCInfo.AnalyzeCallResult(Ins, RetCC);
for (unsigned i = 0; i != RVLocs.size(); ++i) {
CCValAssign VA = RVLocs[i];
if (i == 0 && isThisReturn) {
assert(!VA.needsCustom() && VA.getLocVT() == MVT::i64 &&
"unexpected return calling convention register assignment");
InVals.push_back(ThisVal);
continue;
}
SDValue Val = DAG.getCopyFromReg(Chain, DL, VA.getLocReg(), VA.getLocVT(),
InFlag);
Chain = Val.getValue(1);
InFlag = Val.getValue(2);
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
case CCValAssign::Full: break;
case CCValAssign::BCvt:
Val = DAG.getNode(ISD::BITCAST, DL, VA.getValVT(), Val);
break;
}
InVals.push_back(Val);
}
return Chain;
}
bool
ARM64TargetLowering::isEligibleForTailCallOptimization(SDValue Callee,
CallingConv::ID CalleeCC,
bool isVarArg,
bool isCalleeStructRet,
bool isCallerStructRet,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
const SmallVectorImpl<ISD::InputArg> &Ins,
SelectionDAG& DAG) const {
if (isVarArg && !Outs.empty())
return false;
if (isCalleeStructRet || isCallerStructRet)
return false;
if (!Outs.empty()) {
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CalleeCC, isVarArg, DAG.getMachineFunction(),
getTargetMachine(), ArgLocs, *DAG.getContext());
CCAssignFn *AssignFn = CCAssignFnForCall(CalleeCC, false);
CCInfo.AnalyzeCallOperands(Outs, AssignFn);
if (CCInfo.getNextStackOffset()) {
for (unsigned i = 0, realArgIdx = 0, e = ArgLocs.size();
i != e;
++i, ++realArgIdx) {
CCValAssign &VA = ArgLocs[i];
if (VA.getLocInfo() == CCValAssign::Indirect)
return false;
if (VA.needsCustom()) {
return false;
} else if (!VA.isRegLoc()) {
return false;
}
}
}
}
return true;
}
SDValue
ARM64TargetLowering::LowerCall(CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const {
SelectionDAG &DAG = CLI.DAG;
SDLoc &DL = CLI.DL;
SmallVector<ISD::OutputArg, 32> &Outs = CLI.Outs;
SmallVector<SDValue, 32> &OutVals = CLI.OutVals;
SmallVector<ISD::InputArg, 32> &Ins = CLI.Ins;
SDValue Chain = CLI.Chain;
SDValue Callee = CLI.Callee;
bool &IsTailCall = CLI.IsTailCall;
CallingConv::ID CallConv = CLI.CallConv;
bool IsVarArg = CLI.IsVarArg;
MachineFunction &MF = DAG.getMachineFunction();
bool IsStructRet = (Outs.empty()) ? false : Outs[0].Flags.isSRet();
bool IsThisReturn = false;
if (!EnableARM64TailCalls)
IsTailCall = false;
if (IsTailCall) {
IsTailCall = isEligibleForTailCallOptimization(Callee, CallConv,
IsVarArg, IsStructRet, MF.getFunction()->hasStructRetAttr(),
Outs, OutVals, Ins, DAG);
if (IsTailCall)
++NumTailCalls;
}
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
getTargetMachine(), ArgLocs, *DAG.getContext());
if (IsVarArg) {
unsigned NumArgs = Outs.size();
for (unsigned i = 0; i != NumArgs; ++i) {
MVT ArgVT = Outs[i].VT;
ISD::ArgFlagsTy ArgFlags = Outs[i].Flags;
CCAssignFn *AssignFn = CCAssignFnForCall(CallConv,
!Outs[i].IsFixed);
bool Res = AssignFn(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo);
assert(!Res && "Call operand has unhandled type"); (void)Res;
}
} else {
unsigned NumArgs = Outs.size();
for (unsigned i = 0; i != NumArgs; ++i) {
MVT ValVT = Outs[i].VT;
EVT ActualVT = getValueType(CLI.Args[Outs[i].OrigArgIndex].Ty,
true);
MVT ActualMVT = ActualVT.isSimple() ? ActualVT.getSimpleVT() : ValVT;
ISD::ArgFlagsTy ArgFlags = Outs[i].Flags;
MVT LocVT = ValVT;
if (ActualMVT == MVT::i1 || ActualMVT == MVT::i8)
LocVT = MVT::i8;
else if (ActualMVT == MVT::i16)
LocVT = MVT::i16;
CCAssignFn *AssignFn = CCAssignFnForCall(CallConv, false);
bool Res = AssignFn(i, ValVT, LocVT, CCValAssign::Full, ArgFlags,
CCInfo);
assert(!Res && "Call operand has unhandled type"); (void)Res;
}
}
unsigned NumBytes = CCInfo.getNextStackOffset();
if (!IsTailCall)
Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(NumBytes, true),
DL);
SDValue StackPtr = DAG.getCopyFromReg(Chain, DL, ARM64::SP, getPointerTy());
SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
SmallVector<SDValue, 8> MemOpChains;
for (unsigned i = 0, realArgIdx = 0, e = ArgLocs.size();
i != e; ++i, ++realArgIdx) {
CCValAssign &VA = ArgLocs[i];
SDValue Arg = OutVals[realArgIdx];
ISD::ArgFlagsTy Flags = Outs[realArgIdx].Flags;
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
case CCValAssign::Full: break;
case CCValAssign::SExt:
Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), Arg);
break;
case CCValAssign::ZExt:
Arg = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), Arg);
break;
case CCValAssign::AExt:
Arg = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), Arg);
break;
case CCValAssign::BCvt:
Arg = DAG.getNode(ISD::BITCAST, DL, VA.getLocVT(), Arg);
break;
case CCValAssign::FPExt:
Arg = DAG.getNode(ISD::FP_EXTEND, DL, VA.getLocVT(), Arg);
break;
}
if (VA.isRegLoc()) {
if (realArgIdx == 0 && Flags.isReturned() && Outs[0].VT == MVT::i64) {
assert(VA.getLocVT() == MVT::i64 &&
"unexpected calling convention register assignment");
assert(!Ins.empty() && Ins[0].VT == MVT::i64 &&
"unexpected use of 'returned'");
IsThisReturn = true;
}
RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
} else {
assert(VA.isMemLoc());
assert(!IsTailCall && "stack argument with tail call!?");
unsigned LocMemOffset = VA.getLocMemOffset();
SDValue PtrOff = DAG.getIntPtrConstant(LocMemOffset);
PtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr, PtrOff);
if (Arg.getValueType().isSimple() &&
Arg.getValueType().getSimpleVT() == MVT::i32 &&
(VA.getLocVT() == MVT::i1 ||
VA.getLocVT() == MVT::i8 || VA.getLocVT() == MVT::i16))
Arg = DAG.getNode(ISD::TRUNCATE, DL, VA.getLocVT(), Arg);
SDValue Store = DAG.getStore(Chain, DL, Arg, PtrOff,
MachinePointerInfo::getStack(LocMemOffset),
false, false, 0);
MemOpChains.push_back(Store);
}
}
if (!MemOpChains.empty())
Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
&MemOpChains[0], MemOpChains.size());
SDValue InFlag;
for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
Chain = DAG.getCopyToReg(Chain, DL, RegsToPass[i].first,
RegsToPass[i].second, InFlag);
InFlag = Chain.getValue(1);
}
if (getTargetMachine().getCodeModel() == CodeModel::Large &&
Subtarget->isTargetMachO()) {
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
const GlobalValue *GV = G->getGlobal();
Callee = DAG.getTargetGlobalAddress(GV, DL, getPointerTy(), 0,
ARM64II::MO_GOT);
Callee = DAG.getNode(ARM64ISD::LOADgot, DL, getPointerTy(), Callee);
} else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
{
const char *Sym = S->getSymbol();
Callee = DAG.getTargetExternalSymbol(Sym, getPointerTy(),
ARM64II::MO_GOT);
Callee = DAG.getNode(ARM64ISD::LOADgot, DL, getPointerTy(), Callee);
}
} else if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
const GlobalValue *GV = G->getGlobal();
Callee = DAG.getTargetGlobalAddress(GV, DL, getPointerTy(), 0, 0);
} else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) {
const char *Sym = S->getSymbol();
Callee = DAG.getTargetExternalSymbol(Sym, getPointerTy(), 0);
}
std::vector<SDValue> Ops;
Ops.push_back(Chain);
Ops.push_back(Callee);
for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
Ops.push_back(DAG.getRegister(RegsToPass[i].first,
RegsToPass[i].second.getValueType()));
const uint32_t *Mask;
const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
const ARM64RegisterInfo *ARI = static_cast<const ARM64RegisterInfo*>(TRI);
if (IsThisReturn) {
Mask = ARI->getThisReturnPreservedMask(CallConv);
if (!Mask) {
IsThisReturn = false;
Mask = ARI->getCallPreservedMask(CallConv);
}
} else
Mask = ARI->getCallPreservedMask(CallConv);
assert(Mask && "Missing call preserved mask for calling convention");
Ops.push_back(DAG.getRegisterMask(Mask));
if (InFlag.getNode())
Ops.push_back(InFlag);
SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
if (IsTailCall)
return DAG.getNode(ARM64ISD::TC_RETURN, DL, NodeTys, &Ops[0], Ops.size());
Chain = DAG.getNode(ARM64ISD::CALL, DL, NodeTys, &Ops[0], Ops.size());
InFlag = Chain.getValue(1);
Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(NumBytes, true),
DAG.getIntPtrConstant(0, true), InFlag, DL);
if (!Ins.empty())
InFlag = Chain.getValue(1);
return LowerCallResult(Chain, InFlag, CallConv, IsVarArg, Ins, DL, DAG,
InVals, IsThisReturn,
IsThisReturn ? OutVals[0] : SDValue());
}
bool
ARM64TargetLowering::CanLowerReturn(CallingConv::ID CallConv,
MachineFunction &MF, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
LLVMContext &Context) const {
CCAssignFn *RetCC = CallConv == CallingConv::WebKit_JS ? RetCC_ARM64_WebKit_JS
: RetCC_ARM64_AAPCS;
SmallVector<CCValAssign, 16> RVLocs;
CCState CCInfo(CallConv, isVarArg, MF, getTargetMachine(), RVLocs, Context);
return CCInfo.CheckReturn(Outs, RetCC);
}
SDValue
ARM64TargetLowering::LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc DL, SelectionDAG &DAG) const {
CCAssignFn *RetCC = CallConv == CallingConv::WebKit_JS ? RetCC_ARM64_WebKit_JS
: RetCC_ARM64_AAPCS;
SmallVector<CCValAssign, 16> RVLocs;
CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
getTargetMachine(), RVLocs, *DAG.getContext());
CCInfo.AnalyzeReturn(Outs, RetCC);
SDValue Flag;
SmallVector<SDValue, 4> RetOps(1, Chain);
for (unsigned i = 0, realRVLocIdx = 0; i != RVLocs.size();
++i, ++realRVLocIdx) {
CCValAssign &VA = RVLocs[i];
assert(VA.isRegLoc() && "Can only return in registers!");
SDValue Arg = OutVals[realRVLocIdx];
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
case CCValAssign::Full: break;
case CCValAssign::BCvt:
Arg = DAG.getNode(ISD::BITCAST, DL, VA.getLocVT(), Arg);
break;
}
Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(), Arg, Flag);
Flag = Chain.getValue(1);
RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
}
RetOps[0] = Chain;
if (Flag.getNode())
RetOps.push_back(Flag);
return DAG.getNode(ARM64ISD::RET_FLAG, DL, MVT::Other,
&RetOps[0], RetOps.size());
}
SDValue ARM64TargetLowering::LowerGlobalAddress(SDValue Op,
SelectionDAG &DAG) const {
EVT PtrVT = getPointerTy();
SDLoc DL(Op);
const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
unsigned char OpFlags =
Subtarget->ClassifyGlobalReference(GV, getTargetMachine());
assert(cast<GlobalAddressSDNode>(Op)->getOffset() == 0 &&
"unexpected offset in global node");
if ((OpFlags & ARM64II::MO_GOT) != 0) {
SDValue GotAddr = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, OpFlags);
return DAG.getNode(ARM64ISD::LOADgot, DL, PtrVT, GotAddr);
}
if (getTargetMachine().getCodeModel() == CodeModel::Large) {
const unsigned char MO_NC = ARM64II::MO_NC;
return DAG.getNode(
ARM64ISD::WrapperLarge, DL, PtrVT,
DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, ARM64II::MO_G3),
DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, ARM64II::MO_G2 | MO_NC),
DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, ARM64II::MO_G1 | MO_NC),
DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, ARM64II::MO_G0 | MO_NC));
} else {
SDValue Hi = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
OpFlags | ARM64II::MO_PAGE);
unsigned char LoFlags = OpFlags | ARM64II::MO_PAGEOFF | ARM64II::MO_NC;
SDValue Lo = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, LoFlags);
SDValue ADRP = DAG.getNode(ARM64ISD::ADRP, DL, PtrVT, Hi);
return DAG.getNode(ARM64ISD::ADDlow, DL, PtrVT, ADRP, Lo);
}
}
SDValue
ARM64TargetLowering::LowerDarwinGlobalTLSAddress(SDValue Op,
SelectionDAG &DAG) const {
assert(Subtarget->isTargetDarwin() && "TLS only supported on Darwin");
SDLoc DL(Op);
MVT PtrVT = getPointerTy();
const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
SDValue TLVPAddr = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
ARM64II::MO_TLS);
SDValue DescAddr = DAG.getNode(ARM64ISD::LOADgot, DL, PtrVT, TLVPAddr);
SDValue Chain = DAG.getEntryNode();
SDValue FuncTLVGet =
DAG.getLoad(MVT::i64, DL, Chain, DescAddr, MachinePointerInfo::getGOT(),
false, true, true, 8);
Chain = FuncTLVGet.getValue(1);
MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
MFI->setAdjustsStack(true);
const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
const ARM64RegisterInfo *ARI = static_cast<const ARM64RegisterInfo*>(TRI);
const uint32_t *Mask = ARI->getTLSCallPreservedMask();
Chain = DAG.getCopyToReg(Chain, DL, ARM64::X0, DescAddr, SDValue());
Chain = DAG.getNode(ARM64ISD::CALL, DL, DAG.getVTList(MVT::Other, MVT::Glue),
Chain, FuncTLVGet, DAG.getRegister(ARM64::X0, MVT::i64),
DAG.getRegisterMask(Mask), Chain.getValue(1));
return DAG.getCopyFromReg(Chain, DL, ARM64::X0, PtrVT, Chain.getValue(1));
}
SDValue ARM64TargetLowering::LowerELFTLSDescCall(SDValue SymAddr,
SDValue DescAddr, SDLoc DL,
SelectionDAG &DAG) const {
EVT PtrVT = getPointerTy();
SDValue Func = DAG.getNode(ARM64ISD::LOADgot, DL, PtrVT, SymAddr);
const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
const ARM64RegisterInfo *ARI = static_cast<const ARM64RegisterInfo*>(TRI);
const uint32_t *Mask = ARI->getTLSCallPreservedMask();
SDValue Glue, Chain;
Chain = DAG.getCopyToReg(DAG.getEntryNode(), DL, ARM64::X0, DescAddr, Glue);
Glue = Chain.getValue(1);
SmallVector<SDValue, 6> Ops;
Ops.push_back(Chain);
Ops.push_back(Func);
Ops.push_back(SymAddr);
Ops.push_back(DAG.getRegister(ARM64::X0, PtrVT));
Ops.push_back(DAG.getRegisterMask(Mask));
Ops.push_back(Glue);
SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
Chain = DAG.getNode(ARM64ISD::TLSDESC_CALL, DL, NodeTys, &Ops[0],
Ops.size());
Glue = Chain.getValue(1);
return DAG.getCopyFromReg(Chain, DL, ARM64::X0, PtrVT, Glue);
}
SDValue ARM64TargetLowering::LowerELFGlobalTLSAddress(SDValue Op,
SelectionDAG &DAG) const {
assert(Subtarget->isTargetELF() && "This function expects an ELF target");
assert(getTargetMachine().getCodeModel() == CodeModel::Small
&& "ELF TLS only supported in small memory model");
const GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
TLSModel::Model Model = getTargetMachine().getTLSModel(GA->getGlobal());
SDValue TPOff;
EVT PtrVT = getPointerTy();
SDLoc DL(Op);
const GlobalValue *GV = GA->getGlobal();
SDValue ThreadBase = DAG.getNode(ARM64ISD::THREAD_POINTER, DL, PtrVT);
if (Model == TLSModel::LocalExec) {
SDValue HiVar = DAG.getTargetGlobalAddress(
GV, DL, PtrVT, 0, ARM64II::MO_TLS | ARM64II::MO_G1);
SDValue LoVar = DAG.getTargetGlobalAddress(
GV, DL, PtrVT, 0, ARM64II::MO_TLS | ARM64II::MO_G0 | ARM64II::MO_NC);
TPOff = SDValue(DAG.getMachineNode(ARM64::MOVZXi, DL, PtrVT, HiVar,
DAG.getTargetConstant(16, MVT::i32)), 0);
TPOff = SDValue(DAG.getMachineNode(ARM64::MOVKXi, DL, PtrVT,
TPOff, LoVar,
DAG.getTargetConstant(0, MVT::i32)), 0);
} else if (Model == TLSModel::InitialExec) {
TPOff = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, ARM64II::MO_TLS);
TPOff = DAG.getNode(ARM64ISD::LOADgot, DL, PtrVT, TPOff);
} else if (Model == TLSModel::LocalDynamic) {
ARM64FunctionInfo *MFI =
DAG.getMachineFunction().getInfo<ARM64FunctionInfo>();
MFI->incNumLocalDynamicTLSAccesses();
SDValue HiDesc = DAG.getTargetExternalSymbol(
"_TLS_MODULE_BASE_", PtrVT, ARM64II::MO_TLS | ARM64II::MO_PAGE);
SDValue LoDesc = DAG.getTargetExternalSymbol(
"_TLS_MODULE_BASE_", PtrVT,
ARM64II::MO_TLS | ARM64II::MO_PAGEOFF | ARM64II::MO_NC);
SDValue DescAddr = DAG.getNode(ARM64ISD::ADRP, DL, PtrVT, HiDesc);
DescAddr = DAG.getNode(ARM64ISD::ADDlow, DL, PtrVT, DescAddr, LoDesc);
SDValue SymAddr = DAG.getTargetExternalSymbol("_TLS_MODULE_BASE_", PtrVT,
ARM64II::MO_TLS);
TPOff = LowerELFTLSDescCall(SymAddr, DescAddr, DL, DAG);
SDValue HiVar = DAG.getTargetGlobalAddress(
GV, DL, MVT::i64, 0, ARM64II::MO_TLS | ARM64II::MO_G1);
SDValue LoVar = DAG.getTargetGlobalAddress(
GV, DL, MVT::i64, 0, ARM64II::MO_TLS | ARM64II::MO_G0 | ARM64II::MO_NC);
SDValue DTPOff = SDValue(DAG.getMachineNode(ARM64::MOVZXi, DL, PtrVT, HiVar,
DAG.getTargetConstant(16, MVT::i32)), 0);
DTPOff = SDValue(DAG.getMachineNode(ARM64::MOVKXi, DL, PtrVT,
DTPOff, LoVar,
DAG.getTargetConstant(0, MVT::i32)), 0);
TPOff = DAG.getNode(ISD::ADD, DL, PtrVT, TPOff, DTPOff);
} else if (Model == TLSModel::GeneralDynamic) {
SDValue HiDesc = DAG.getTargetGlobalAddress(
GV, DL, PtrVT, 0, ARM64II::MO_TLS | ARM64II::MO_PAGE);
SDValue LoDesc = DAG.getTargetGlobalAddress(
GV, DL, PtrVT, 0,
ARM64II::MO_TLS | ARM64II::MO_PAGEOFF | ARM64II::MO_NC);
SDValue DescAddr = DAG.getNode(ARM64ISD::ADRP, DL, PtrVT, HiDesc);
DescAddr = DAG.getNode(ARM64ISD::ADDlow, DL, PtrVT, DescAddr, LoDesc);
SDValue SymAddr =
DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, ARM64II::MO_TLS);
TPOff = LowerELFTLSDescCall(SymAddr, DescAddr, DL, DAG);
} else
llvm_unreachable("Unsupported ELF TLS access model");
return DAG.getNode(ISD::ADD, DL, PtrVT, ThreadBase, TPOff);
}
SDValue ARM64TargetLowering::LowerGlobalTLSAddress(SDValue Op,
SelectionDAG &DAG) const {
if (Subtarget->isTargetDarwin())
return LowerDarwinGlobalTLSAddress(Op, DAG);
else if (Subtarget->isTargetELF())
return LowerELFGlobalTLSAddress(Op, DAG);
llvm_unreachable("Unexpected platform trying to use TLS");
}
SDValue ARM64TargetLowering::LowerBR_CC(SDValue Op, SelectionDAG &DAG) const {
SDValue Chain = Op.getOperand(0);
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
SDValue LHS = Op.getOperand(2);
SDValue RHS = Op.getOperand(3);
SDValue Dest = Op.getOperand(4);
SDLoc dl(Op);
if (LHS.getValueType() == MVT::f128) {
softenSetCCOperands(DAG, MVT::f128, LHS, RHS, CC, dl);
if (RHS.getNode() == 0) {
RHS = DAG.getConstant(0, LHS.getValueType());
CC = ISD::SETNE;
}
}
unsigned Opc = LHS.getOpcode();
if (LHS.getResNo() == 1 &&
isa<ConstantSDNode>(RHS) && cast<ConstantSDNode>(RHS)->isOne() &&
(Opc == ISD::SADDO || Opc == ISD::UADDO || Opc == ISD::SSUBO ||
Opc == ISD::USUBO || Opc == ISD::SMULO || Opc == ISD::UMULO)) {
assert((CC == ISD::SETEQ || CC == ISD::SETNE) &&
"Unexpected condition code.");
if (!DAG.getTargetLoweringInfo().isTypeLegal(LHS->getValueType(0)))
return SDValue();
ARM64CC::CondCode OFCC;
SDValue Value, Overflow;
llvm::tie(Value, Overflow) = getARM64XALUOOp(OFCC, LHS.getValue(0), DAG);
if (CC == ISD::SETNE)
OFCC = getInvertedCondCode(OFCC);
SDValue CCVal = DAG.getConstant(OFCC, MVT::i32);
return DAG.getNode(ARM64ISD::BRCOND, SDLoc(LHS), MVT::Other, Chain, Dest,
CCVal, Overflow);
}
if (LHS.getValueType().isInteger()) {
assert ((LHS.getValueType() == RHS.getValueType()) &&
(LHS.getValueType() == MVT::i32 || LHS.getValueType() == MVT::i64));
const ConstantSDNode *RHSC = dyn_cast<ConstantSDNode>(RHS);
if (RHSC && RHSC->getZExtValue() == 0) {
if (CC == ISD::SETEQ) {
if (LHS.getOpcode() == ISD::AND &&
isa<ConstantSDNode>(LHS.getOperand(1)) &&
isPowerOf2_64(LHS.getConstantOperandVal(1))) {
SDValue Test = LHS.getOperand(0);
uint64_t Mask = LHS.getConstantOperandVal(1);
if (Test.getValueType() == MVT::i32)
Test = DAG.getAnyExtOrTrunc(Test, dl, MVT::i64);
return DAG.getNode(ARM64ISD::TBZ, dl, MVT::Other, Chain, Test,
DAG.getConstant(Log2_64(Mask), MVT::i64), Dest);
}
return DAG.getNode(ARM64ISD::CBZ, dl, MVT::Other,
Chain, LHS, Dest);
} else if (CC == ISD::SETNE) {
if (LHS.getOpcode() == ISD::AND &&
isa<ConstantSDNode>(LHS.getOperand(1)) &&
isPowerOf2_64(LHS.getConstantOperandVal(1))) {
SDValue Test = LHS.getOperand(0);
uint64_t Mask = LHS.getConstantOperandVal(1);
if (Test.getValueType() == MVT::i32)
Test = DAG.getAnyExtOrTrunc(Test, dl, MVT::i64);
return DAG.getNode(ARM64ISD::TBNZ, dl, MVT::Other, Chain, Test,
DAG.getConstant(Log2_64(Mask), MVT::i64), Dest);
}
return DAG.getNode(ARM64ISD::CBNZ, dl, MVT::Other,
Chain, LHS, Dest);
}
}
SDValue CCVal;
SDValue Cmp = getARM64Cmp(LHS, RHS, CC, CCVal, DAG, dl);
return DAG.getNode(ARM64ISD::BRCOND, dl, MVT::Other,
Chain, Dest, CCVal, Cmp);
}
assert(LHS.getValueType() == MVT::f32 || LHS.getValueType() == MVT::f64);
SDValue Cmp = emitComparison(LHS, RHS, dl, DAG);
ARM64CC::CondCode CC1, CC2;
changeFPCCToARM64CC(CC, CC1, CC2);
SDValue CC1Val = DAG.getConstant(CC1, MVT::i32);
SDValue BR1 = DAG.getNode(ARM64ISD::BRCOND, dl, MVT::Other,
Chain, Dest, CC1Val, Cmp);
if (CC2 != ARM64CC::AL) {
SDValue CC2Val = DAG.getConstant(CC2, MVT::i32);
return DAG.getNode(ARM64ISD::BRCOND, dl, MVT::Other,
BR1, Dest, CC2Val, Cmp);
}
return BR1;
}
SDValue ARM64TargetLowering::
LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
EVT VT = Op.getValueType();
SDLoc DL(Op);
SDValue In1 = Op.getOperand(0);
SDValue In2 = Op.getOperand(1);
EVT SrcVT = In2.getValueType();
if (SrcVT != VT) {
if (SrcVT == MVT::f32 && VT == MVT::f64)
In2 = DAG.getNode(ISD::FP_EXTEND, DL, VT, In2);
else if (SrcVT == MVT::f64 && VT == MVT::f32)
In2 = DAG.getNode(ISD::FP_ROUND, DL, VT, In2, DAG.getIntPtrConstant(0));
else
return SDValue();
}
EVT VecVT;
EVT EltVT;
SDValue EltMask, VecVal1, VecVal2;
if (VT == MVT::f32 || VT == MVT::v2f32 || VT == MVT::v4f32) {
EltVT = MVT::i32;
VecVT = MVT::v4i32;
EltMask = DAG.getConstant(0x80000000ULL, EltVT);
if (!VT.isVector()) {
VecVal1 = DAG.getTargetInsertSubreg(ARM64::ssub, DL, VecVT,
DAG.getUNDEF(VecVT), In1);
VecVal2 = DAG.getTargetInsertSubreg(ARM64::ssub, DL, VecVT,
DAG.getUNDEF(VecVT), In2);
} else {
VecVal1 = DAG.getNode(ISD::BITCAST, DL, VecVT, In1);
VecVal2 = DAG.getNode(ISD::BITCAST, DL, VecVT, In2);
}
} else if (VT == MVT::f64 || VT == MVT::v2f64) {
EltVT = MVT::i64;
VecVT = MVT::v2i64;
EltMask = DAG.getConstant(0, EltVT);
if (!VT.isVector()) {
VecVal1 = DAG.getTargetInsertSubreg(ARM64::dsub, DL, VecVT,
DAG.getUNDEF(VecVT), In1);
VecVal2 = DAG.getTargetInsertSubreg(ARM64::dsub, DL, VecVT,
DAG.getUNDEF(VecVT), In2);
} else {
VecVal1 = DAG.getNode(ISD::BITCAST, DL, VecVT, In1);
VecVal2 = DAG.getNode(ISD::BITCAST, DL, VecVT, In2);
}
} else {
llvm_unreachable("Invalid type for copysign!");
}
std::vector<SDValue> BuildVectorOps;
for (unsigned i = 0; i < VecVT.getVectorNumElements(); ++i)
BuildVectorOps.push_back(EltMask);
SDValue BuildVec = DAG.getNode(ISD::BUILD_VECTOR, DL, VecVT,
&BuildVectorOps[0], BuildVectorOps.size());
if (VT == MVT::f64 || VT == MVT::v2f64) {
BuildVec = DAG.getNode(ISD::BITCAST, DL, MVT::v2f64, BuildVec);
BuildVec = DAG.getNode(ISD::FNEG, DL, MVT::v2f64, BuildVec);
BuildVec = DAG.getNode(ISD::BITCAST, DL, MVT::v2i64, BuildVec);
}
SDValue Sel =
DAG.getNode(ARM64ISD::BIT, DL, VecVT, VecVal1, VecVal2, BuildVec);
if (VT == MVT::f32)
return DAG.getTargetExtractSubreg(ARM64::ssub, DL, VT, Sel);
else if (VT == MVT::f64)
return DAG.getTargetExtractSubreg(ARM64::dsub, DL, VT, Sel);
else
return DAG.getNode(ISD::BITCAST, DL, VT, Sel);
}
SDValue ARM64TargetLowering::LowerCTPOP(SDValue Op, SelectionDAG &DAG) const {
if (DAG.getMachineFunction().getFunction()->
getAttributes().hasAttribute(AttributeSet::FunctionIndex,
Attribute::NoImplicitFloat))
return SDValue();
SDValue Val = Op.getOperand(0);
SDLoc DL(Op);
EVT VT = Op.getValueType();
SDValue ZeroVec = DAG.getUNDEF(MVT::v8i8);
SDValue VecVal;
if (VT == MVT::i32) {
VecVal = DAG.getNode(ISD::BITCAST, DL, MVT::f32, Val);
VecVal =
DAG.getTargetInsertSubreg(ARM64::ssub, DL, MVT::v8i8, ZeroVec, VecVal);
} else {
VecVal = DAG.getNode(ISD::BITCAST, DL, MVT::v8i8, Val);
}
SDValue CtPop = DAG.getNode(ISD::CTPOP, DL, MVT::v8i8, VecVal);
SDValue UaddLV = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, MVT::i32,
DAG.getConstant(Intrinsic::arm64_neon_uaddlv,
MVT::i32),
CtPop);
if (VT == MVT::i64)
UaddLV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, UaddLV);
return UaddLV;
}
SDValue ARM64TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const {
if (Op.getValueType().isVector()) return LowerVSETCC(Op, DAG);
SDValue LHS = Op.getOperand(0);
SDValue RHS = Op.getOperand(1);
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
SDLoc dl(Op);
EVT VT = Op.getValueType();
SDValue TVal = DAG.getConstant(1, VT);
SDValue FVal = DAG.getConstant(0, VT);
if (LHS.getValueType() == MVT::f128) {
softenSetCCOperands(DAG, MVT::f128, LHS, RHS, CC, dl);
if (RHS.getNode() == 0) {
assert(LHS.getValueType() == Op.getValueType() &&
"Unexpected setcc expansion!");
return LHS;
}
}
if (LHS.getValueType().isInteger()) {
SDValue CCVal;
SDValue Cmp = getARM64Cmp(LHS, RHS, ISD::getSetCCInverse(CC, true), CCVal,
DAG, dl);
return DAG.getNode(ARM64ISD::CSEL, dl, VT, FVal, TVal, CCVal, Cmp);
}
assert(LHS.getValueType() == MVT::f32 || LHS.getValueType() == MVT::f64);
SDValue Cmp = emitComparison(LHS, RHS, dl, DAG);
ARM64CC::CondCode CC1, CC2;
changeFPCCToARM64CC(CC, CC1, CC2);
if (CC2 == ARM64CC::AL) {
changeFPCCToARM64CC(ISD::getSetCCInverse(CC, false), CC1, CC2);
SDValue CC1Val = DAG.getConstant(CC1, MVT::i32);
return DAG.getNode(ARM64ISD::CSEL, dl, VT, FVal, TVal, CC1Val, Cmp);
} else {
SDValue CC1Val = DAG.getConstant(CC1, MVT::i32);
SDValue CS1 = DAG.getNode(ARM64ISD::CSEL, dl, VT, TVal, FVal, CC1Val, Cmp);
SDValue CC2Val = DAG.getConstant(CC2, MVT::i32);
return DAG.getNode(ARM64ISD::CSEL, dl, VT, TVal, CS1, CC2Val, Cmp);
}
}
static bool selectCCOpsAreFMaxCompatible(SDValue Cmp, SDValue Result) {
if (Cmp == Result)
return true;
ConstantFPSDNode *CCmp = dyn_cast<ConstantFPSDNode>(Cmp);
ConstantFPSDNode *CResult = dyn_cast<ConstantFPSDNode>(Result);
if (CCmp && CResult && Cmp.getValueType() == MVT::f32 &&
Result.getValueType() == MVT::f64) {
bool Lossy;
APFloat CmpVal = CCmp->getValueAPF();
CmpVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &Lossy);
return CResult->getValueAPF().bitwiseIsEqual(CmpVal);
}
return Result->getOpcode() == ISD::FP_EXTEND &&
Result->getOperand(0) == Cmp;
}
SDValue ARM64TargetLowering::LowerSELECT(SDValue Op, SelectionDAG &DAG) const {
SDValue CC = Op->getOperand(0);
SDValue TVal = Op->getOperand(1);
SDValue FVal = Op->getOperand(2);
SDLoc DL(Op);
unsigned Opc = CC.getOpcode();
if (CC.getResNo() == 1 &&
(Opc == ISD::SADDO || Opc == ISD::UADDO || Opc == ISD::SSUBO ||
Opc == ISD::USUBO || Opc == ISD::SMULO || Opc == ISD::UMULO)) {
if (!DAG.getTargetLoweringInfo().isTypeLegal(CC->getValueType(0)))
return SDValue();
ARM64CC::CondCode OFCC;
SDValue Value, Overflow;
llvm::tie(Value, Overflow) = getARM64XALUOOp(OFCC, CC.getValue(0), DAG);
SDValue CCVal = DAG.getConstant(OFCC, MVT::i32);
return DAG.getNode(ARM64ISD::CSEL, DL, Op.getValueType(), TVal, FVal,
CCVal, Overflow);
}
if (CC.getOpcode() == ISD::SETCC)
return DAG.getSelectCC(DL, CC.getOperand(0), CC.getOperand(1),
TVal, FVal,
cast<CondCodeSDNode>(CC.getOperand(2))->get());
else
return DAG.getSelectCC(DL, CC,
DAG.getConstant(0, CC.getValueType()),
TVal, FVal, ISD::SETNE);
}
SDValue ARM64TargetLowering::LowerSELECT_CC(SDValue Op,
SelectionDAG &DAG) const {
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
SDValue LHS = Op.getOperand(0);
SDValue RHS = Op.getOperand(1);
SDValue TVal = Op.getOperand(2);
SDValue FVal = Op.getOperand(3);
SDLoc dl(Op);
if (LHS.getValueType() == MVT::f128) {
softenSetCCOperands(DAG, MVT::f128, LHS, RHS, CC, dl);
if (RHS.getNode() == 0) {
RHS = DAG.getConstant(0, LHS.getValueType());
CC = ISD::SETNE;
}
}
if (LHS.getValueType().isInteger()) {
assert ((LHS.getValueType() == RHS.getValueType()) &&
(LHS.getValueType() == MVT::i32 || LHS.getValueType() == MVT::i64));
unsigned Opcode = ARM64ISD::CSEL;
ConstantSDNode *CFVal = dyn_cast<ConstantSDNode>(FVal);
ConstantSDNode *CTVal = dyn_cast<ConstantSDNode>(TVal);
if (CTVal && CFVal && CTVal->isAllOnesValue() && CFVal->isNullValue()) {
std::swap(TVal, FVal);
std::swap(CTVal, CFVal);
CC = ISD::getSetCCInverse(CC, true);
} else if (CTVal && CFVal && CTVal->isOne() && CFVal->isNullValue()) {
std::swap(TVal, FVal);
std::swap(CTVal, CFVal);
CC = ISD::getSetCCInverse(CC, true);
} else if (TVal.getOpcode() == ISD::XOR) {
ConstantSDNode *CVal = dyn_cast<ConstantSDNode>(TVal.getOperand(1));
if (CVal && CVal->isAllOnesValue()) {
std::swap(TVal, FVal);
std::swap(CTVal, CFVal);
CC = ISD::getSetCCInverse(CC, true);
}
} else if (TVal.getOpcode() == ISD::SUB) {
ConstantSDNode *CVal = dyn_cast<ConstantSDNode>(TVal.getOperand(0));
if (CVal && CVal->isNullValue()) {
std::swap(TVal, FVal);
std::swap(CTVal, CFVal);
CC = ISD::getSetCCInverse(CC, true);
}
} else if (CTVal && CFVal) {
const int64_t TrueVal = CTVal->getSExtValue();
const int64_t FalseVal = CFVal->getSExtValue();
bool Swap = false;
if (TrueVal == ~FalseVal) {
Opcode = ARM64ISD::CSINV;
} else if (TrueVal == -FalseVal) {
Opcode = ARM64ISD::CSNEG;
} else if (TVal.getValueType() == MVT::i32) {
const uint32_t TrueVal32 = CTVal->getZExtValue();
const uint32_t FalseVal32 = CFVal->getZExtValue();
if ((TrueVal32 == FalseVal32 + 1) || (TrueVal32 + 1 == FalseVal32)) {
Opcode = ARM64ISD::CSINC;
if (TrueVal32 > FalseVal32) {
Swap = true;
}
}
} else if ((TrueVal == FalseVal + 1) || (TrueVal + 1 == FalseVal)) {
Opcode = ARM64ISD::CSINC;
if (TrueVal > FalseVal) {
Swap = true;
}
}
if (Swap) {
std::swap(TVal, FVal);
std::swap(CTVal, CFVal);
CC = ISD::getSetCCInverse(CC, true);
}
if (Opcode != ARM64ISD::CSEL) {
FVal = TVal;
}
}
SDValue CCVal;
SDValue Cmp = getARM64Cmp(LHS, RHS, CC, CCVal, DAG, dl);
EVT VT = Op.getValueType();
return DAG.getNode(Opcode, dl, VT, TVal, FVal, CCVal, Cmp);
}
assert(LHS.getValueType() == MVT::f32 || LHS.getValueType() == MVT::f64);
assert (LHS.getValueType() == RHS.getValueType());
EVT VT = Op.getValueType();
if (getTargetMachine().Options.NoNaNsFPMath) {
if (selectCCOpsAreFMaxCompatible(LHS, FVal) &&
selectCCOpsAreFMaxCompatible(RHS, TVal)) {
CC = ISD::getSetCCSwappedOperands(CC);
std::swap(TVal, FVal);
}
if (selectCCOpsAreFMaxCompatible(LHS, TVal) &&
selectCCOpsAreFMaxCompatible(RHS, FVal)) {
switch (CC) {
default:
break;
case ISD::SETGT:
case ISD::SETGE:
case ISD::SETUGT:
case ISD::SETUGE:
case ISD::SETOGT:
case ISD::SETOGE:
return DAG.getNode(ARM64ISD::FMAX, dl, VT, TVal, FVal);
break;
case ISD::SETLT:
case ISD::SETLE:
case ISD::SETULT:
case ISD::SETULE:
case ISD::SETOLT:
case ISD::SETOLE:
return DAG.getNode(ARM64ISD::FMIN, dl, VT, TVal, FVal);
break;
}
}
}
SDValue Cmp = emitComparison(LHS, RHS, dl, DAG);
ARM64CC::CondCode CC1, CC2;
changeFPCCToARM64CC(CC, CC1, CC2);
SDValue CC1Val = DAG.getConstant(CC1, MVT::i32);
SDValue CS1 = DAG.getNode(ARM64ISD::CSEL, dl, VT, TVal, FVal, CC1Val, Cmp);
if (CC2 != ARM64CC::AL) {
SDValue CC2Val = DAG.getConstant(CC2, MVT::i32);
return DAG.getNode(ARM64ISD::CSEL, dl, VT, TVal, CS1, CC2Val, Cmp);
}
return CS1;
}
SDValue
ARM64TargetLowering::LowerJumpTable(SDValue Op, SelectionDAG &DAG) const {
JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
EVT PtrVT = getPointerTy();
SDLoc DL(Op);
SDValue Hi = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, ARM64II::MO_PAGE);
SDValue Lo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT,
ARM64II::MO_PAGEOFF | ARM64II::MO_NC);
SDValue ADRP = DAG.getNode(ARM64ISD::ADRP, DL, PtrVT, Hi);
return DAG.getNode(ARM64ISD::ADDlow, DL, PtrVT, ADRP, Lo);
}
SDValue
ARM64TargetLowering::LowerConstantPool(SDValue Op, SelectionDAG &DAG) const {
ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(Op);
EVT PtrVT = getPointerTy();
SDLoc DL(Op);
if (getTargetMachine().getCodeModel() == CodeModel::Large) {
if (Subtarget->isTargetMachO()) {
SDValue GotAddr =
DAG.getTargetConstantPool(CP->getConstVal(), PtrVT, CP->getAlignment(),
CP->getOffset(), ARM64II::MO_GOT);
return DAG.getNode(ARM64ISD::LOADgot, DL, PtrVT, GotAddr);
}
const unsigned char MO_NC = ARM64II::MO_NC;
return DAG.getNode(
ARM64ISD::WrapperLarge, DL, PtrVT,
DAG.getTargetConstantPool(CP->getConstVal(), PtrVT, CP->getAlignment(),
CP->getOffset(), ARM64II::MO_G3),
DAG.getTargetConstantPool(CP->getConstVal(), PtrVT, CP->getAlignment(),
CP->getOffset(), ARM64II::MO_G2 | MO_NC),
DAG.getTargetConstantPool(CP->getConstVal(), PtrVT, CP->getAlignment(),
CP->getOffset(), ARM64II::MO_G1 | MO_NC),
DAG.getTargetConstantPool(CP->getConstVal(), PtrVT, CP->getAlignment(),
CP->getOffset(), ARM64II::MO_G0 | MO_NC));
} else {
SDValue Hi =
DAG.getTargetConstantPool(CP->getConstVal(), PtrVT, CP->getAlignment(),
CP->getOffset(), ARM64II::MO_PAGE);
SDValue Lo = DAG.getTargetConstantPool(
CP->getConstVal(), PtrVT, CP->getAlignment(), CP->getOffset(),
ARM64II::MO_PAGEOFF | ARM64II::MO_NC);
SDValue ADRP = DAG.getNode(ARM64ISD::ADRP, DL, PtrVT, Hi);
return DAG.getNode(ARM64ISD::ADDlow, DL, PtrVT, ADRP, Lo);
}
}
SDValue ARM64TargetLowering::LowerBlockAddress(SDValue Op,
SelectionDAG &DAG) const {
const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
EVT PtrVT = getPointerTy();
SDLoc DL(Op);
if (getTargetMachine().getCodeModel() == CodeModel::Large &&
!Subtarget->isTargetMachO()) {
const unsigned char MO_NC = ARM64II::MO_NC;
return DAG.getNode(
ARM64ISD::WrapperLarge, DL, PtrVT,
DAG.getTargetBlockAddress(BA, PtrVT, 0, ARM64II::MO_G3),
DAG.getTargetBlockAddress(BA, PtrVT, 0, ARM64II::MO_G2 | MO_NC),
DAG.getTargetBlockAddress(BA, PtrVT, 0, ARM64II::MO_G1 | MO_NC),
DAG.getTargetBlockAddress(BA, PtrVT, 0, ARM64II::MO_G0 | MO_NC));
} else {
SDValue Hi = DAG.getTargetBlockAddress(BA, PtrVT, 0, ARM64II::MO_PAGE);
SDValue Lo = DAG.getTargetBlockAddress(BA, PtrVT, 0,
ARM64II::MO_PAGEOFF | ARM64II::MO_NC);
SDValue ADRP = DAG.getNode(ARM64ISD::ADRP, DL, PtrVT, Hi);
return DAG.getNode(ARM64ISD::ADDlow, DL, PtrVT, ADRP, Lo);
}
}
SDValue
ARM64TargetLowering::LowerDarwin_VASTART(SDValue Op, SelectionDAG &DAG) const {
ARM64FunctionInfo *FuncInfo = DAG.getMachineFunction().
getInfo<ARM64FunctionInfo>();
SDLoc DL(Op);
SDValue FR = DAG.getFrameIndex(FuncInfo->getVarArgsStackIndex(),
getPointerTy());
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
return DAG.getStore(Op.getOperand(0), DL, FR, Op.getOperand(1),
MachinePointerInfo(SV), false, false, 0);
}
SDValue
ARM64TargetLowering::LowerAAPCS_VASTART(SDValue Op, SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
ARM64FunctionInfo *FuncInfo = MF.getInfo<ARM64FunctionInfo>();
SDLoc DL(Op);
SDValue Chain = Op.getOperand(0);
SDValue VAList = Op.getOperand(1);
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
SmallVector<SDValue, 4> MemOps;
SDValue Stack = DAG.getFrameIndex(FuncInfo->getVarArgsStackIndex(),
getPointerTy());
MemOps.push_back(DAG.getStore(Chain, DL, Stack, VAList,
MachinePointerInfo(SV), false, false, 8));
int GPRSize = FuncInfo->getVarArgsGPRSize();
if (GPRSize > 0) {
SDValue GRTop, GRTopAddr;
GRTopAddr = DAG.getNode(ISD::ADD, DL, getPointerTy(), VAList,
DAG.getConstant(8, getPointerTy()));
GRTop = DAG.getFrameIndex(FuncInfo->getVarArgsGPRIndex(), getPointerTy());
GRTop = DAG.getNode(ISD::ADD, DL, getPointerTy(), GRTop,
DAG.getConstant(GPRSize, getPointerTy()));
MemOps.push_back(DAG.getStore(Chain, DL, GRTop, GRTopAddr,
MachinePointerInfo(SV, 8),
false, false, 8));
}
int FPRSize = FuncInfo->getVarArgsFPRSize();
if (FPRSize > 0) {
SDValue VRTop, VRTopAddr;
VRTopAddr = DAG.getNode(ISD::ADD, DL, getPointerTy(), VAList,
DAG.getConstant(16, getPointerTy()));
VRTop = DAG.getFrameIndex(FuncInfo->getVarArgsFPRIndex(), getPointerTy());
VRTop = DAG.getNode(ISD::ADD, DL, getPointerTy(), VRTop,
DAG.getConstant(FPRSize, getPointerTy()));
MemOps.push_back(DAG.getStore(Chain, DL, VRTop, VRTopAddr,
MachinePointerInfo(SV, 16),
false, false, 8));
}
SDValue GROffsAddr = DAG.getNode(ISD::ADD, DL, getPointerTy(), VAList,
DAG.getConstant(24, getPointerTy()));
MemOps.push_back(DAG.getStore(Chain, DL, DAG.getConstant(-GPRSize, MVT::i32),
GROffsAddr, MachinePointerInfo(SV, 24),
false, false, 4));
SDValue VROffsAddr = DAG.getNode(ISD::ADD, DL, getPointerTy(), VAList,
DAG.getConstant(28, getPointerTy()));
MemOps.push_back(DAG.getStore(Chain, DL, DAG.getConstant(-FPRSize, MVT::i32),
VROffsAddr, MachinePointerInfo(SV, 28),
false, false, 4));
return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, &MemOps[0],
MemOps.size());
}
SDValue
ARM64TargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const {
return Subtarget->isTargetDarwin() ? LowerDarwin_VASTART(Op, DAG)
: LowerAAPCS_VASTART(Op, DAG);
}
SDValue
ARM64TargetLowering::LowerVACOPY(SDValue Op, SelectionDAG &DAG) const {
unsigned VaListSize = Subtarget->isTargetDarwin() ? 8 : 32;
const Value *DestSV = cast<SrcValueSDNode>(Op.getOperand(3))->getValue();
const Value *SrcSV = cast<SrcValueSDNode>(Op.getOperand(4))->getValue();
return DAG.getMemcpy(Op.getOperand(0), SDLoc(Op),
Op.getOperand(1), Op.getOperand(2),
DAG.getConstant(VaListSize, MVT::i32), 8, false, false,
MachinePointerInfo(DestSV), MachinePointerInfo(SrcSV));
}
SDValue ARM64TargetLowering::LowerVAARG(SDValue Op, SelectionDAG &DAG) const {
assert(Subtarget->isTargetDarwin() &&
"automatic va_arg instruction only works on Darwin");
const Value *V = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
EVT VT = Op.getValueType();
SDLoc DL(Op);
SDValue Chain = Op.getOperand(0);
SDValue Addr = Op.getOperand(1);
unsigned Align = Op.getConstantOperandVal(3);
SDValue VAList = DAG.getLoad(getPointerTy(), DL, Chain, Addr,
MachinePointerInfo(V), false, false, false, 0);
Chain = VAList.getValue(1);
if (Align > 8) {
assert(((Align & (Align-1)) == 0) && "Expected Align to be a power of 2");
VAList = DAG.getNode(ISD::ADD, DL, getPointerTy(), VAList,
DAG.getConstant(Align - 1, getPointerTy()));
VAList = DAG.getNode(ISD::AND, DL, getPointerTy(), VAList,
DAG.getConstant(-(int64_t)Align, getPointerTy()));
}
Type *ArgTy = VT.getTypeForEVT(*DAG.getContext());
uint64_t ArgSize = getDataLayout()->getTypeAllocSize(ArgTy);
if (VT.isInteger() && !VT.isVector())
ArgSize = 8;
bool NeedFPTrunc = false;
if (VT.isFloatingPoint() && !VT.isVector() && VT != MVT::f64) {
ArgSize = 8;
NeedFPTrunc = true;
}
SDValue VANext = DAG.getNode(ISD::ADD, DL, getPointerTy(), VAList,
DAG.getConstant(ArgSize, getPointerTy()));
SDValue APStore = DAG.getStore(Chain, DL, VANext, Addr,
MachinePointerInfo(V), false, false, 0);
if (NeedFPTrunc) {
SDValue WideFP = DAG.getLoad(MVT::f64, DL, APStore, VAList,
MachinePointerInfo(), false, false, false, 0);
SDValue NarrowFP = DAG.getNode(ISD::FP_ROUND, DL, VT, WideFP.getValue(0),
DAG.getIntPtrConstant(1));
SDValue Ops[] = { NarrowFP, WideFP.getValue(1) };
return DAG.getMergeValues(Ops, 2, DL);
}
return DAG.getLoad(VT, DL, APStore, VAList, MachinePointerInfo(),
false, false, false, 0);
}
SDValue
ARM64TargetLowering::LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const {
MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
MFI->setFrameAddressIsTaken(true);
EVT VT = Op.getValueType();
SDLoc DL(Op);
unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), DL, ARM64::FP, VT);
while (Depth--)
FrameAddr = DAG.getLoad(VT, DL, DAG.getEntryNode(), FrameAddr,
MachinePointerInfo(),
false, false, false, 0);
return FrameAddr;
}
SDValue
ARM64TargetLowering::LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
MFI->setReturnAddressIsTaken(true);
EVT VT = Op.getValueType();
SDLoc DL(Op);
unsigned Depth = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
if (Depth) {
SDValue FrameAddr = LowerFRAMEADDR(Op, DAG);
SDValue Offset = DAG.getConstant(8, getPointerTy());
return DAG.getLoad(VT, DL, DAG.getEntryNode(),
DAG.getNode(ISD::ADD, DL, VT, FrameAddr, Offset),
MachinePointerInfo(), false, false, false, 0);
}
unsigned Reg = MF.addLiveIn(ARM64::LR, &ARM64::GPR64RegClass);
return DAG.getCopyFromReg(DAG.getEntryNode(), DL, Reg, VT);
}
SDValue ARM64TargetLowering::LowerShiftRightParts(SDValue Op,
SelectionDAG &DAG) const {
assert(Op.getNumOperands() == 3 && "Not a double-shift!");
EVT VT = Op.getValueType();
unsigned VTBits = VT.getSizeInBits();
SDLoc dl(Op);
SDValue ShOpLo = Op.getOperand(0);
SDValue ShOpHi = Op.getOperand(1);
SDValue ShAmt = Op.getOperand(2);
SDValue ARMcc;
unsigned Opc = (Op.getOpcode() == ISD::SRA_PARTS) ? ISD::SRA : ISD::SRL;
assert(Op.getOpcode() == ISD::SRA_PARTS || Op.getOpcode() == ISD::SRL_PARTS);
SDValue RevShAmt = DAG.getNode(ISD::SUB, dl, MVT::i64,
DAG.getConstant(VTBits, MVT::i64), ShAmt);
SDValue Tmp1 = DAG.getNode(ISD::SRL, dl, VT, ShOpLo, ShAmt);
SDValue ExtraShAmt = DAG.getNode(ISD::SUB, dl, MVT::i64, ShAmt,
DAG.getConstant(VTBits, MVT::i64));
SDValue Tmp2 = DAG.getNode(ISD::SHL, dl, VT, ShOpHi, RevShAmt);
SDValue Cmp = emitComparison(ExtraShAmt, DAG.getConstant(0, MVT::i64),
dl, DAG);
SDValue CCVal = DAG.getConstant(ARM64CC::GE, MVT::i32);
SDValue FalseValLo = DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2);
SDValue TrueValLo = DAG.getNode(Opc, dl, VT, ShOpHi, ExtraShAmt);
SDValue Lo = DAG.getNode(ARM64ISD::CSEL, dl, VT, TrueValLo, FalseValLo,
CCVal, Cmp);
SDValue FalseValHi = DAG.getNode(Opc, dl, VT, ShOpHi, ShAmt);
SDValue TrueValHi = Opc == ISD::SRA ?
DAG.getNode(Opc, dl, VT, ShOpHi, DAG.getConstant(VTBits - 1, MVT::i64)) :
DAG.getConstant(0, VT);
SDValue Hi =
DAG.getNode(ARM64ISD::CSEL, dl, VT, TrueValHi, FalseValHi, CCVal, Cmp);
SDValue Ops[2] = { Lo, Hi };
return DAG.getMergeValues(Ops, 2, dl);
}
SDValue ARM64TargetLowering::LowerShiftLeftParts(SDValue Op,
SelectionDAG &DAG) const {
assert(Op.getNumOperands() == 3 && "Not a double-shift!");
EVT VT = Op.getValueType();
unsigned VTBits = VT.getSizeInBits();
SDLoc dl(Op);
SDValue ShOpLo = Op.getOperand(0);
SDValue ShOpHi = Op.getOperand(1);
SDValue ShAmt = Op.getOperand(2);
SDValue ARMcc;
assert(Op.getOpcode() == ISD::SHL_PARTS);
SDValue RevShAmt = DAG.getNode(ISD::SUB, dl, MVT::i64,
DAG.getConstant(VTBits, MVT::i64), ShAmt);
SDValue Tmp1 = DAG.getNode(ISD::SRL, dl, VT, ShOpLo, RevShAmt);
SDValue ExtraShAmt = DAG.getNode(ISD::SUB, dl, MVT::i64, ShAmt,
DAG.getConstant(VTBits, MVT::i64));
SDValue Tmp2 = DAG.getNode(ISD::SHL, dl, VT, ShOpHi, ShAmt);
SDValue Tmp3 = DAG.getNode(ISD::SHL, dl, VT, ShOpLo, ExtraShAmt);
SDValue FalseVal = DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2);
SDValue Cmp = emitComparison(ExtraShAmt, DAG.getConstant(0, MVT::i64),
dl, DAG);
SDValue CCVal = DAG.getConstant(ARM64CC::GE, MVT::i32);
SDValue Hi = DAG.getNode(ARM64ISD::CSEL, dl, VT, Tmp3, FalseVal,
CCVal, Cmp);
SDValue TrueValLo = DAG.getConstant(0, VT);
SDValue FalseValLo = DAG.getNode(ISD::SHL, dl, VT, ShOpLo, ShAmt);
SDValue Lo = DAG.getNode(ARM64ISD::CSEL, dl, VT, TrueValLo, FalseValLo,
CCVal, Cmp);
SDValue Ops[2] = { Lo, Hi };
return DAG.getMergeValues(Ops, 2, dl);
}
bool
ARM64TargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
return false;
}
bool ARM64TargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const {
if (Imm.isPosZero()) return true;
if (VT == MVT::f64)
return ARM64_AM::getFP64Imm(Imm) != -1;
else if (VT == MVT::f32)
return ARM64_AM::getFP32Imm(Imm) != -1;
return false;
}
ARM64TargetLowering::ConstraintType
ARM64TargetLowering::getConstraintType(const std::string &Constraint) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
default: break;
case 'z': return C_Other;
case 'x':
case 'w': return C_RegisterClass;
case 'Q': return C_Memory;
}
}
return TargetLowering::getConstraintType(Constraint);
}
TargetLowering::ConstraintWeight
ARM64TargetLowering::getSingleConstraintMatchWeight(
AsmOperandInfo &info, const char *constraint) const {
ConstraintWeight weight = CW_Invalid;
Value *CallOperandVal = info.CallOperandVal;
if (CallOperandVal == NULL)
return CW_Default;
Type *type = CallOperandVal->getType();
switch (*constraint) {
default:
weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint);
break;
case 'x':
case 'w':
if (type->isFloatingPointTy() || type->isVectorTy())
weight = CW_Register;
break;
case 'z':
weight = CW_Constant;
break;
}
return weight;
}
std::pair<unsigned, const TargetRegisterClass*>
ARM64TargetLowering::getRegForInlineAsmConstraint(const std::string &Constraint,
MVT VT) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
case 'r':
if (VT.getSizeInBits() == 64)
return std::make_pair(0U, &ARM64::GPR64commonRegClass);
return std::make_pair(0U, &ARM64::GPR32commonRegClass);
case 'w':
if (VT == MVT::f32)
return std::make_pair(0U, &ARM64::FPR32RegClass);
if (VT.getSizeInBits() == 64)
return std::make_pair(0U, &ARM64::FPR64RegClass);
if (VT.getSizeInBits() == 128)
return std::make_pair(0U, &ARM64::FPR128RegClass);
break;
case 'x':
if (VT.getSizeInBits() == 128)
return std::make_pair(0U, &ARM64::FPR128_loRegClass);
break;
}
}
if (StringRef("{cc}").equals_lower(Constraint))
return std::make_pair(unsigned(ARM64::CPSR), &ARM64::CCRRegClass);
std::pair<unsigned, const TargetRegisterClass*> Res;
Res = TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
if (Res.second == 0) {
unsigned Size = Constraint.size();
if ((Size == 4 || Size == 5) &&
Constraint[0] == '{' &&
tolower(Constraint[1]) == 'v' &&
Constraint[Size-1] == '}') {
const std::string Reg = std::string(&Constraint[2], &Constraint[Size-1]);
int RegNo = atoi(Reg.c_str());
if (RegNo >= 0 && RegNo <= 31) {
Res.first = ARM64::FPR128RegClass.getRegister(RegNo);
Res.second = &ARM64::FPR128RegClass;
}
}
}
return Res;
}
void ARM64TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
std::string &Constraint,
std::vector<SDValue>&Ops,
SelectionDAG &DAG)
const {
SDValue Result(0, 0);
if (Constraint.length() != 1) return;
char ConstraintLetter = Constraint[0];
switch (ConstraintLetter) {
default: break;
case 'z': {
ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op);
if (!C || C->getZExtValue() != 0)
return;
if (Op.getValueType() == MVT::i64)
Result = DAG.getRegister(ARM64::XZR, MVT::i64);
else
Result = DAG.getRegister(ARM64::WZR, MVT::i32);
break;
}
case 'I': case 'J':
case 'K': case 'L':
case 'M': case 'N':
ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op);
if (!C)
return;
uint64_t CVal = C->getZExtValue();
switch (ConstraintLetter) {
case 'I':
if (isUInt<12>(CVal) || isShiftedUInt<12, 12>(CVal))
break;
return;
case 'J': {
uint64_t NVal = -C->getSExtValue();
if (isUInt<12>(NVal) || isShiftedUInt<12, 12>(NVal))
break;
return;
}
case 'K':
if (ARM64_AM::isLogicalImmediate(CVal, 32))
break;
return;
case 'L':
if (ARM64_AM::isLogicalImmediate(CVal, 64))
break;
return;
case 'M': {
if (!isUInt<32>(CVal))
return;
if (ARM64_AM::isLogicalImmediate(CVal, 32))
break;
if ((CVal & 0xFFFF) == CVal)
break;
if ((CVal & 0xFFFF0000ULL) == CVal)
break;
uint64_t NCVal = ~(uint32_t)CVal;
if ((NCVal & 0xFFFFULL) == NCVal)
break;
if ((NCVal & 0xFFFF0000ULL) == NCVal)
break;
return;
}
case 'N': {
if (ARM64_AM::isLogicalImmediate(CVal, 64))
break;
if ((CVal & 0xFFFFULL) == CVal)
break;
if ((CVal & 0xFFFF0000ULL) == CVal)
break;
if ((CVal & 0xFFFF00000000ULL) == CVal)
break;
if ((CVal & 0xFFFF000000000000ULL) == CVal)
break;
uint64_t NCVal = ~CVal;
if ((NCVal & 0xFFFFULL) == NCVal)
break;
if ((NCVal & 0xFFFF0000ULL) == NCVal)
break;
if ((NCVal & 0xFFFF00000000ULL) == NCVal)
break;
if ((NCVal & 0xFFFF000000000000ULL) == NCVal)
break;
return;
}
default:
return;
}
Result = DAG.getTargetConstant(CVal, MVT::i64);
break;
}
if (Result.getNode()) {
Ops.push_back(Result);
return;
}
return TargetLowering::LowerAsmOperandForConstraint(Op, Constraint, Ops, DAG);
}
static SDValue WidenVector(SDValue V64Reg, SelectionDAG &DAG) {
EVT VT = V64Reg.getValueType();
unsigned NarrowSize = VT.getVectorNumElements();
MVT EltTy = VT.getVectorElementType().getSimpleVT();
MVT WideTy = MVT::getVectorVT(EltTy, 2*NarrowSize);
SDLoc DL(V64Reg);
return DAG.getNode(ISD::INSERT_SUBVECTOR, DL, WideTy, DAG.getUNDEF(WideTy),
V64Reg, DAG.getConstant(0, MVT::i32));
}
static unsigned getExtFactor(SDValue& V)
{
EVT EltType = V.getValueType().getVectorElementType();
return EltType.getSizeInBits() / 8;
}
static SDValue NarrowVector(SDValue V128Reg, SelectionDAG &DAG) {
EVT VT = V128Reg.getValueType();
unsigned WideSize = VT.getVectorNumElements();
MVT EltTy = VT.getVectorElementType().getSimpleVT();
MVT NarrowTy = MVT::getVectorVT(EltTy, WideSize / 2);
SDLoc DL(V128Reg);
return DAG.getTargetExtractSubreg(ARM64::dsub, DL, NarrowTy, V128Reg);
}
SDValue ARM64TargetLowering::
ReconstructShuffle(SDValue Op, SelectionDAG &DAG) const {
SDLoc dl(Op);
EVT VT = Op.getValueType();
unsigned NumElts = VT.getVectorNumElements();
SmallVector<SDValue, 2> SourceVecs;
SmallVector<unsigned, 2> MinElts;
SmallVector<unsigned, 2> MaxElts;
for (unsigned i = 0; i < NumElts; ++i) {
SDValue V = Op.getOperand(i);
if (V.getOpcode() == ISD::UNDEF)
continue;
else if (V.getOpcode() != ISD::EXTRACT_VECTOR_ELT) {
return SDValue();
}
SDValue SourceVec = V.getOperand(0);
unsigned EltNo = cast<ConstantSDNode>(V.getOperand(1))->getZExtValue();
bool FoundSource = false;
for (unsigned j = 0; j < SourceVecs.size(); ++j) {
if (SourceVecs[j] == SourceVec) {
if (MinElts[j] > EltNo)
MinElts[j] = EltNo;
if (MaxElts[j] < EltNo)
MaxElts[j] = EltNo;
FoundSource = true;
break;
}
}
if (!FoundSource) {
SourceVecs.push_back(SourceVec);
MinElts.push_back(EltNo);
MaxElts.push_back(EltNo);
}
}
if (SourceVecs.size() > 2)
return SDValue();
SDValue ShuffleSrcs[2] = {DAG.getUNDEF(VT), DAG.getUNDEF(VT) };
int VEXTOffsets[2] = {0, 0};
for (unsigned i = 0; i < SourceVecs.size(); ++i) {
if (SourceVecs[i].getValueType() == VT) {
ShuffleSrcs[i] = SourceVecs[i];
VEXTOffsets[i] = 0;
continue;
} else if (SourceVecs[i].getValueType().getVectorNumElements() < NumElts) {
return SDValue();
}
if (SourceVecs[i].getValueType().getVectorElementType() !=
VT.getVectorElementType())
return SDValue();
assert(SourceVecs[i].getValueType().getVectorNumElements() == 2*NumElts &&
"unexpected vector sizes in ReconstructShuffle");
if (MaxElts[i] - MinElts[i] >= NumElts) {
return SDValue();
}
if (MinElts[i] >= NumElts) {
VEXTOffsets[i] = NumElts;
ShuffleSrcs[i] = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VT,
SourceVecs[i],
DAG.getIntPtrConstant(NumElts));
} else if (MaxElts[i] < NumElts) {
VEXTOffsets[i] = 0;
ShuffleSrcs[i] = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VT,
SourceVecs[i],
DAG.getIntPtrConstant(0));
} else {
VEXTOffsets[i] = MinElts[i];
SDValue VEXTSrc1 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VT,
SourceVecs[i],
DAG.getIntPtrConstant(0));
SDValue VEXTSrc2 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VT,
SourceVecs[i],
DAG.getIntPtrConstant(NumElts));
unsigned Imm = VEXTOffsets[i] * getExtFactor(VEXTSrc1);
ShuffleSrcs[i] = DAG.getNode(ARM64ISD::EXT, dl, VT, VEXTSrc1, VEXTSrc2,
DAG.getConstant(Imm, MVT::i32));
}
}
SmallVector<int, 8> Mask;
for (unsigned i = 0; i < NumElts; ++i) {
SDValue Entry = Op.getOperand(i);
if (Entry.getOpcode() == ISD::UNDEF) {
Mask.push_back(-1);
continue;
}
SDValue ExtractVec = Entry.getOperand(0);
int ExtractElt = cast<ConstantSDNode>(Op.getOperand(i)
.getOperand(1))->getSExtValue();
if (ExtractVec == SourceVecs[0]) {
Mask.push_back(ExtractElt - VEXTOffsets[0]);
} else {
Mask.push_back(ExtractElt + NumElts - VEXTOffsets[1]);
}
}
if (isShuffleMaskLegal(Mask, VT))
return DAG.getVectorShuffle(VT, dl, ShuffleSrcs[0], ShuffleSrcs[1],
&Mask[0]);
return SDValue();
}
static bool isSingletonEXTMask(ArrayRef<int> M, EVT VT, unsigned &Imm) {
unsigned NumElts = VT.getVectorNumElements();
if (M[0] < 0)
return false;
Imm = M[0];
unsigned ExpectedElt = Imm;
for (unsigned i = 1; i < NumElts; ++i) {
++ExpectedElt;
if (ExpectedElt == NumElts)
ExpectedElt = 0;
if (M[i] < 0) continue; if (ExpectedElt != static_cast<unsigned>(M[i]))
return false;
}
return true;
}
static bool isEXTMask(ArrayRef<int> M, EVT VT,
bool &ReverseEXT, unsigned &Imm) {
unsigned NumElts = VT.getVectorNumElements();
ReverseEXT = false;
if (M[0] < 0)
return false;
Imm = M[0];
unsigned ExpectedElt = Imm;
for (unsigned i = 1; i < NumElts; ++i) {
ExpectedElt += 1;
if (ExpectedElt == NumElts * 2) {
ExpectedElt = 0;
ReverseEXT = true;
}
if (M[i] < 0) continue; if (ExpectedElt != static_cast<unsigned>(M[i]))
return false;
}
if (ReverseEXT)
Imm -= NumElts;
return true;
}
static bool isREVMask(ArrayRef<int> M, EVT VT,
unsigned BlockSize) {
assert((BlockSize==16 || BlockSize==32 || BlockSize==64) &&
"Only possible block sizes for REV are: 16, 32, 64");
unsigned EltSz = VT.getVectorElementType().getSizeInBits();
if (EltSz == 64)
return false;
unsigned NumElts = VT.getVectorNumElements();
unsigned BlockElts = M[0] + 1;
if (M[0] < 0)
BlockElts = BlockSize / EltSz;
if (BlockSize <= EltSz || BlockSize != BlockElts * EltSz)
return false;
for (unsigned i = 0; i < NumElts; ++i) {
if (M[i] < 0) continue; if ((unsigned) M[i] != (i - i%BlockElts) + (BlockElts - 1 - i%BlockElts))
return false;
}
return true;
}
static bool isZIPMask(ArrayRef<int> M, EVT VT, unsigned &WhichResult) {
unsigned NumElts = VT.getVectorNumElements();
WhichResult = (M[0] == 0 ? 0 : 1);
unsigned Idx = WhichResult * NumElts / 2;
for (unsigned i = 0; i != NumElts; i += 2) {
if ((M[i] >= 0 && (unsigned) M[i] != Idx) ||
(M[i+1] >= 0 && (unsigned) M[i+1] != Idx + NumElts))
return false;
Idx += 1;
}
return true;
}
static bool isUZPMask(ArrayRef<int> M, EVT VT, unsigned &WhichResult) {
unsigned NumElts = VT.getVectorNumElements();
WhichResult = (M[0] == 0 ? 0 : 1);
for (unsigned i = 0; i != NumElts; ++i) {
if (M[i] < 0) continue; if ((unsigned) M[i] != 2 * i + WhichResult)
return false;
}
return true;
}
static bool isTRNMask(ArrayRef<int> M, EVT VT, unsigned &WhichResult) {
unsigned NumElts = VT.getVectorNumElements();
WhichResult = (M[0] == 0 ? 0 : 1);
for (unsigned i = 0; i < NumElts; i += 2) {
if ((M[i] >= 0 && (unsigned) M[i] != i + WhichResult) ||
(M[i+1] >= 0 && (unsigned) M[i+1] != i + NumElts + WhichResult))
return false;
}
return true;
}
static bool isZIP_v_undef_Mask(ArrayRef<int> M, EVT VT, unsigned &WhichResult) {
unsigned NumElts = VT.getVectorNumElements();
WhichResult = (M[0] == 0 ? 0 : 1);
unsigned Idx = WhichResult * NumElts / 2;
for (unsigned i = 0; i != NumElts; i += 2) {
if ((M[i] >= 0 && (unsigned) M[i] != Idx) ||
(M[i+1] >= 0 && (unsigned) M[i+1] != Idx))
return false;
Idx += 1;
}
return true;
}
static bool isUZP_v_undef_Mask(ArrayRef<int> M, EVT VT, unsigned &WhichResult) {
unsigned Half = VT.getVectorNumElements() / 2;
WhichResult = (M[0] == 0 ? 0 : 1);
for (unsigned j = 0; j != 2; ++j) {
unsigned Idx = WhichResult;
for (unsigned i = 0; i != Half; ++i) {
int MIdx = M[i + j * Half];
if (MIdx >= 0 && (unsigned) MIdx != Idx)
return false;
Idx += 2;
}
}
return true;
}
static bool isTRN_v_undef_Mask(ArrayRef<int> M, EVT VT, unsigned &WhichResult) {
unsigned NumElts = VT.getVectorNumElements();
WhichResult = (M[0] == 0 ? 0 : 1);
for (unsigned i = 0; i < NumElts; i += 2) {
if ((M[i] >= 0 && (unsigned) M[i] != i + WhichResult) ||
(M[i+1] >= 0 && (unsigned) M[i+1] != i + WhichResult))
return false;
}
return true;
}
static SDValue GeneratePerfectShuffle(unsigned PFEntry, SDValue LHS,
SDValue RHS, SelectionDAG &DAG,
SDLoc dl) {
unsigned OpNum = (PFEntry >> 26) & 0x0F;
unsigned LHSID = (PFEntry >> 13) & ((1 << 13)-1);
unsigned RHSID = (PFEntry >> 0) & ((1 << 13)-1);
enum {
OP_COPY = 0, OP_VREV,
OP_VDUP0,
OP_VDUP1,
OP_VDUP2,
OP_VDUP3,
OP_VEXT1,
OP_VEXT2,
OP_VEXT3,
OP_VUZPL, OP_VUZPR, OP_VZIPL, OP_VZIPR, OP_VTRNL, OP_VTRNR };
if (OpNum == OP_COPY) {
if (LHSID == (1*9+2)*9+3) return LHS;
assert(LHSID == ((4*9+5)*9+6)*9+7 && "Illegal OP_COPY!");
return RHS;
}
SDValue OpLHS, OpRHS;
OpLHS = GeneratePerfectShuffle(PerfectShuffleTable[LHSID], LHS, RHS, DAG, dl);
OpRHS = GeneratePerfectShuffle(PerfectShuffleTable[RHSID], LHS, RHS, DAG, dl);
EVT VT = OpLHS.getValueType();
switch (OpNum) {
default: llvm_unreachable("Unknown shuffle opcode!");
case OP_VREV:
if (VT.getVectorElementType() == MVT::i32 ||
VT.getVectorElementType() == MVT::f32)
return DAG.getNode(ARM64ISD::REV64, dl, VT, OpLHS);
if (VT.getVectorElementType() == MVT::i16)
return DAG.getNode(ARM64ISD::REV32, dl, VT, OpLHS);
assert(VT.getVectorElementType() == MVT::i8);
return DAG.getNode(ARM64ISD::REV16, dl, VT, OpLHS);
case OP_VDUP0:
case OP_VDUP1:
case OP_VDUP2:
case OP_VDUP3: {
EVT EltTy = VT.getVectorElementType();
unsigned Opcode;
if (EltTy == MVT::i8)
Opcode = ARM64ISD::DUPLANE8;
else if (EltTy == MVT::i16)
Opcode = ARM64ISD::DUPLANE16;
else if (EltTy == MVT::i32 || EltTy == MVT::f32)
Opcode = ARM64ISD::DUPLANE32;
else if (EltTy == MVT::i64 || EltTy == MVT::f64)
Opcode = ARM64ISD::DUPLANE64;
else
llvm_unreachable("Invalid vector element type?");
if (VT.getSizeInBits() == 64)
OpLHS = WidenVector(OpLHS, DAG);
SDValue Lane = DAG.getConstant(OpNum-OP_VDUP0, MVT::i64);
return DAG.getNode(Opcode, dl, VT, OpLHS, Lane);
}
case OP_VEXT1:
case OP_VEXT2:
case OP_VEXT3: {
unsigned Imm = (OpNum - OP_VEXT1 + 1) * getExtFactor(OpLHS);
return DAG.getNode(ARM64ISD::EXT, dl, VT,
OpLHS, OpRHS,
DAG.getConstant(Imm, MVT::i32));
}
case OP_VUZPL:
return DAG.getNode(ARM64ISD::UZP1, dl, DAG.getVTList(VT, VT), OpLHS, OpRHS);
case OP_VUZPR:
return DAG.getNode(ARM64ISD::UZP2, dl, DAG.getVTList(VT, VT), OpLHS, OpRHS);
case OP_VZIPL:
return DAG.getNode(ARM64ISD::ZIP1, dl, DAG.getVTList(VT, VT), OpLHS, OpRHS);
case OP_VZIPR:
return DAG.getNode(ARM64ISD::ZIP2, dl, DAG.getVTList(VT, VT), OpLHS, OpRHS);
case OP_VTRNL:
return DAG.getNode(ARM64ISD::TRN1, dl, DAG.getVTList(VT, VT), OpLHS, OpRHS);
case OP_VTRNR:
return DAG.getNode(ARM64ISD::TRN2, dl, DAG.getVTList(VT, VT), OpLHS, OpRHS);
}
}
static SDValue GenerateTBL(SDValue Op, ArrayRef<int> ShuffleMask,
SelectionDAG &DAG) {
SDValue V1 = Op.getOperand(0);
SDValue V2 = Op.getOperand(1);
SDLoc DL(Op);
EVT EltVT = Op.getValueType().getVectorElementType();
unsigned BytesPerElt = EltVT.getSizeInBits() / 8;
SmallVector<SDValue, 8> TBLMask;
for (ArrayRef<int>::iterator I = ShuffleMask.begin(), E = ShuffleMask.end();
I != E; ++I) {
for (unsigned Byte = 0; Byte < BytesPerElt; ++Byte) {
unsigned Offset = Byte + *I * BytesPerElt;
TBLMask.push_back(DAG.getConstant(Offset, MVT::i32));
}
}
MVT IndexVT = MVT::v8i8;
unsigned IndexLen = 8;
if (Op.getValueType().getSizeInBits() == 128) {
IndexVT = MVT::v16i8;
IndexLen = 16;
}
SDValue V1Cst = DAG.getNode(ISD::BITCAST, DL, IndexVT, V1);
SDValue V2Cst = DAG.getNode(ISD::BITCAST, DL, IndexVT, V2);
SDValue Shuffle;
if (V2.getNode()->getOpcode() == ISD::UNDEF) {
if (IndexLen == 8)
V1Cst = DAG.getNode(ISD::CONCAT_VECTORS, DL, MVT::v16i8, V1Cst, V1Cst);
Shuffle = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, IndexVT,
DAG.getConstant(Intrinsic::arm64_neon_tbl1, MVT::i32),
V1Cst,
DAG.getNode(ISD::BUILD_VECTOR, DL, IndexVT,
&TBLMask[0], IndexLen));
} else {
if (IndexLen == 8) {
V1Cst = DAG.getNode(ISD::CONCAT_VECTORS, DL, MVT::v16i8, V1Cst, V2Cst);
Shuffle = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, IndexVT,
DAG.getConstant(Intrinsic::arm64_neon_tbl1,
MVT::i32),
V1Cst, DAG.getNode(ISD::BUILD_VECTOR, DL, IndexVT,
&TBLMask[0], IndexLen));
} else {
Shuffle = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, IndexVT,
DAG.getConstant(Intrinsic::arm64_neon_tbl2,
MVT::i32),
V1Cst, V2Cst,
DAG.getNode(ISD::BUILD_VECTOR, DL, IndexVT,
&TBLMask[0], IndexLen));
}
}
return DAG.getNode(ISD::BITCAST, DL, Op.getValueType(), Shuffle);
}
static unsigned getDUPLANEOp(EVT EltType) {
if (EltType == MVT::i8)
return ARM64ISD::DUPLANE8;
if (EltType == MVT::i16)
return ARM64ISD::DUPLANE16;
if (EltType == MVT::i32 || EltType == MVT::f32)
return ARM64ISD::DUPLANE32;
if (EltType == MVT::i64 || EltType == MVT::f64)
return ARM64ISD::DUPLANE64;
llvm_unreachable("Invalid vector element type?");
}
SDValue ARM64TargetLowering::
LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
SDLoc dl(Op);
EVT VT = Op.getValueType();
ShuffleVectorSDNode *SVN = cast<ShuffleVectorSDNode>(Op.getNode());
ArrayRef<int> ShuffleMask = SVN->getMask();
SDValue V1 = Op.getOperand(0);
SDValue V2 = Op.getOperand(1);
if (ShuffleVectorSDNode::isSplatMask(&ShuffleMask[0],
V1.getValueType().getSimpleVT())) {
int Lane = SVN->getSplatIndex();
if (Lane == -1) Lane = 0;
if (Lane == 0 && V1.getOpcode() == ISD::SCALAR_TO_VECTOR)
return DAG.getNode(ARM64ISD::DUP, dl, V1.getValueType(),V1.getOperand(0));
if (V1.getOpcode() == ISD::BUILD_VECTOR &&
!isa<ConstantSDNode>(V1.getOperand(Lane)))
return DAG.getNode(ARM64ISD::DUP, dl, VT, V1.getOperand(Lane));
unsigned Opcode = getDUPLANEOp(V1.getValueType().getVectorElementType());
if (VT.getSizeInBits() == 64)
V1 = WidenVector(V1, DAG);
return DAG.getNode(Opcode, dl, VT,
V1, DAG.getConstant(Lane, MVT::i64));
}
if (isREVMask(ShuffleMask, VT, 64))
return DAG.getNode(ARM64ISD::REV64, dl, V1.getValueType(), V1, V2);
if (isREVMask(ShuffleMask, VT, 32))
return DAG.getNode(ARM64ISD::REV32, dl, V1.getValueType(), V1, V2);
if (isREVMask(ShuffleMask, VT, 16))
return DAG.getNode(ARM64ISD::REV16, dl, V1.getValueType(), V1, V2);
bool ReverseEXT = false;
unsigned Imm;
if (isEXTMask(ShuffleMask, VT, ReverseEXT, Imm)) {
if (ReverseEXT) std::swap(V1, V2);
Imm *= getExtFactor(V1);
return DAG.getNode(ARM64ISD::EXT, dl, V1.getValueType(), V1, V2,
DAG.getConstant(Imm, MVT::i32));
} else if (V2->getOpcode() == ISD::UNDEF &&
isSingletonEXTMask(ShuffleMask, VT, Imm)) {
Imm *= getExtFactor(V1);
return DAG.getNode(ARM64ISD::EXT, dl, V1.getValueType(), V1, V1,
DAG.getConstant(Imm, MVT::i32));
}
unsigned WhichResult;
if (isZIPMask(ShuffleMask, VT, WhichResult)) {
unsigned Opc = (WhichResult == 0) ? ARM64ISD::ZIP1 : ARM64ISD::ZIP2;
return DAG.getNode(Opc, dl, V1.getValueType(), V1, V2);
}
if (isUZPMask(ShuffleMask, VT, WhichResult)) {
unsigned Opc = (WhichResult == 0) ? ARM64ISD::UZP1 : ARM64ISD::UZP2;
return DAG.getNode(Opc, dl, V1.getValueType(), V1, V2);
}
if (isTRNMask(ShuffleMask, VT, WhichResult)) {
unsigned Opc = (WhichResult == 0) ? ARM64ISD::TRN1 : ARM64ISD::TRN2;
return DAG.getNode(Opc, dl, V1.getValueType(), V1, V2);
}
if (isZIP_v_undef_Mask(ShuffleMask, VT, WhichResult)) {
unsigned Opc = (WhichResult == 0) ? ARM64ISD::ZIP1 : ARM64ISD::ZIP2;
return DAG.getNode(Opc, dl, V1.getValueType(), V1, V1);
}
if (isUZP_v_undef_Mask(ShuffleMask, VT, WhichResult)) {
unsigned Opc = (WhichResult == 0) ? ARM64ISD::UZP1 : ARM64ISD::UZP2;
return DAG.getNode(Opc, dl, V1.getValueType(), V1, V1);
}
if (isTRN_v_undef_Mask(ShuffleMask, VT, WhichResult)) {
unsigned Opc = (WhichResult == 0) ? ARM64ISD::TRN1 : ARM64ISD::TRN2;
return DAG.getNode(Opc, dl, V1.getValueType(), V1, V1);
}
unsigned NumElts = VT.getVectorNumElements();
if (NumElts == 4) {
unsigned PFIndexes[4];
for (unsigned i = 0; i != 4; ++i) {
if (ShuffleMask[i] < 0)
PFIndexes[i] = 8;
else
PFIndexes[i] = ShuffleMask[i];
}
unsigned PFTableIndex =
PFIndexes[0]*9*9*9+PFIndexes[1]*9*9+PFIndexes[2]*9+PFIndexes[3];
unsigned PFEntry = PerfectShuffleTable[PFTableIndex];
unsigned Cost = (PFEntry >> 30);
if (Cost <= 4)
return GeneratePerfectShuffle(PFEntry, V1, V2, DAG, dl);
}
return GenerateTBL(Op, ShuffleMask, DAG);
}
static bool resolveBuildVector(BuildVectorSDNode *BVN, APInt &CnstBits,
APInt &UndefBits) {
EVT VT = BVN->getValueType(0);
APInt SplatBits, SplatUndef;
unsigned SplatBitSize;
bool HasAnyUndefs;
if (BVN->isConstantSplat(SplatBits, SplatUndef, SplatBitSize, HasAnyUndefs)) {
unsigned NumSplats = VT.getSizeInBits() / SplatBitSize;
for (unsigned i = 0; i < NumSplats; ++i) {
CnstBits <<= SplatBitSize;
UndefBits <<= SplatBitSize;
CnstBits |= SplatBits.zextOrTrunc(VT.getSizeInBits());
UndefBits |= (SplatBits ^ SplatUndef).zextOrTrunc(VT.getSizeInBits());
}
return true;
}
return false;
}
SDValue ARM64TargetLowering::
LowerVectorAND(SDValue Op, SelectionDAG &DAG) const {
BuildVectorSDNode *BVN =
dyn_cast<BuildVectorSDNode>(Op.getOperand(1).getNode());
SDValue LHS = Op.getOperand(0);
SDLoc dl(Op);
EVT VT = Op.getValueType();
if (!BVN) return Op;
APInt CnstBits(VT.getSizeInBits(), 0);
APInt UndefBits(VT.getSizeInBits(), 0);
if (resolveBuildVector(BVN, CnstBits, UndefBits)) {
CnstBits = ~CnstBits;
bool SecondTry = false;
AttemptModImm:
if (CnstBits.getHiBits(64) == CnstBits.getLoBits(64)) {
CnstBits = CnstBits.zextOrTrunc(64);
uint64_t CnstVal = CnstBits.getZExtValue();
if (ARM64_AM::isAdvSIMDModImmType1(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType1(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::BICi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType2(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType2(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::BICi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType3(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType3(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::BICi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(16, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType4(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType4(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::BICi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(24, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType5(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType5(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::BICi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType6(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType6(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::BICi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
}
if (SecondTry) goto FailedModImm;
SecondTry = true;
CnstBits = ~UndefBits;
goto AttemptModImm;
}
FailedModImm:
return Op;
}
bool isAllConstantBuildVector(const SDValue &PotentialBVec,
uint64_t &ConstVal) {
BuildVectorSDNode *Bvec = dyn_cast<BuildVectorSDNode>(PotentialBVec);
if (!Bvec)
return false;
ConstantSDNode *FirstElt = dyn_cast<ConstantSDNode>(Bvec->getOperand(0));
if (!FirstElt)
return false;
EVT VT = Bvec->getValueType(0);
unsigned NumElts = VT.getVectorNumElements();
for (unsigned i = 1; i < NumElts; ++i)
if (dyn_cast<ConstantSDNode>(Bvec->getOperand(i)) != FirstElt)
return false;
ConstVal = FirstElt->getZExtValue();
return true;
}
static unsigned getIntrinsicID(const SDNode* N) {
unsigned Opcode = N->getOpcode();
switch(Opcode) {
default: return Intrinsic::not_intrinsic;
case ISD::INTRINSIC_WO_CHAIN: {
unsigned IID = cast<ConstantSDNode>(N->getOperand(0))->getZExtValue();
if (IID < Intrinsic::num_intrinsics) return IID;
return Intrinsic::not_intrinsic;
}
}
}
static SDValue tryLowerToSLI(SDNode *N, SelectionDAG &DAG) {
EVT VT = N->getValueType(0);
if (!VT.isVector())
return SDValue();
SDLoc DL(N);
const SDValue And = N->getOperand(0);
if (And.getOpcode() != ISD::AND)
return SDValue();
SDValue Shift = N->getOperand(1);
unsigned ShiftOpc = Shift.getOpcode();
if ((ShiftOpc != ARM64ISD::VSHL && ShiftOpc != ARM64ISD::VLSHR))
return SDValue();
bool IsShiftRight = ShiftOpc == ARM64ISD::VLSHR;
ConstantSDNode *C2node = dyn_cast<ConstantSDNode>(Shift.getOperand(1));
if (!C2node)
return SDValue();
uint64_t C1;
if (!isAllConstantBuildVector(And.getOperand(1), C1))
return SDValue();
uint64_t C2 = C2node->getZExtValue();
unsigned ElemSizeInBits = VT.getVectorElementType().getSizeInBits();
if (C2 > ElemSizeInBits)
return SDValue();
unsigned ElemMask = (1 << ElemSizeInBits) - 1;
if ((C1 & ElemMask) != (~C2 & ElemMask))
return SDValue();
SDValue X = And.getOperand(0);
SDValue Y = Shift.getOperand(0);
unsigned Intrin = IsShiftRight ? Intrinsic::arm64_neon_vsri
: Intrinsic::arm64_neon_vsli;
SDValue ResultSLI =
DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, VT,
DAG.getConstant(Intrin, MVT::i32), X, Y, Shift.getOperand(1));
DEBUG(dbgs() << "arm64-lower: transformed: \n");
DEBUG(N->dump(&DAG));
DEBUG(dbgs() << "into: \n");
DEBUG(ResultSLI->dump(&DAG));
++NumShiftInserts;
return ResultSLI;
}
SDValue ARM64TargetLowering::
LowerVectorOR(SDValue Op, SelectionDAG &DAG) const {
if (EnableARM64SlrGeneration) {
SDValue Res = tryLowerToSLI(Op.getNode(), DAG);
if (Res.getNode())
return Res;
}
BuildVectorSDNode *BVN =
dyn_cast<BuildVectorSDNode>(Op.getOperand(0).getNode());
SDValue LHS = Op.getOperand(1);
SDLoc dl(Op);
EVT VT = Op.getValueType();
if (!BVN) {
LHS = Op.getOperand(0);
BVN = dyn_cast<BuildVectorSDNode>(Op.getOperand(1).getNode());
}
if (!BVN) return Op;
APInt CnstBits(VT.getSizeInBits(), 0);
APInt UndefBits(VT.getSizeInBits(), 0);
if (resolveBuildVector(BVN, CnstBits, UndefBits)) {
bool SecondTry = false;
AttemptModImm:
if (CnstBits.getHiBits(64) == CnstBits.getLoBits(64)) {
CnstBits = CnstBits.zextOrTrunc(64);
uint64_t CnstVal = CnstBits.getZExtValue();
if (ARM64_AM::isAdvSIMDModImmType1(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType1(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::ORRi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType2(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType2(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::ORRi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType3(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType3(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::ORRi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(16, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType4(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType4(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::ORRi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(24, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType5(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType5(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::ORRi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType6(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType6(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::ORRi, dl, MovTy, LHS,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
}
if (SecondTry) goto FailedModImm;
SecondTry = true;
CnstBits = UndefBits;
goto AttemptModImm;
}
FailedModImm:
return Op;
}
SDValue ARM64TargetLowering::
LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const {
BuildVectorSDNode *BVN = cast<BuildVectorSDNode>(Op.getNode());
SDLoc dl(Op);
EVT VT = Op.getValueType();
APInt CnstBits(VT.getSizeInBits(), 0);
APInt UndefBits(VT.getSizeInBits(), 0);
if (resolveBuildVector(BVN, CnstBits, UndefBits)) {
bool SecondTry = false;
AttemptModImm:
if (CnstBits.getHiBits(64) == CnstBits.getLoBits(64)) {
CnstBits = CnstBits.zextOrTrunc(64);
uint64_t CnstVal = CnstBits.getZExtValue();
if (VT.isInteger() && (CnstVal == 0 || CnstVal == ~0UL))
return Op;
if (ARM64_AM::isAdvSIMDModImmType10(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType10(CnstVal);
if (VT.getSizeInBits() == 128) {
SDValue Mov = DAG.getNode(ARM64ISD::MOVIedit, dl, MVT::v2i64,
DAG.getConstant(CnstVal, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
SDValue Mov = DAG.getNode(ARM64ISD::MOVIedit, dl, MVT::f64,
DAG.getConstant(CnstVal, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType1(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType1(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MOVIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType2(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType2(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MOVIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType3(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType3(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MOVIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(16, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType4(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType4(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MOVIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(24, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType5(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType5(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::MOVIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType6(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType6(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::MOVIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType7(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType7(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MOVImsl, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(264, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType8(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType8(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MOVImsl, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(272, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType9(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType9(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v16i8 : MVT::v8i8;
SDValue Mov = DAG.getNode(ARM64ISD::MOVI, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType11(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType11(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4f32 : MVT::v2f32;
SDValue Mov = DAG.getNode(ARM64ISD::FMOV, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType12(CnstVal) &&
VT.getSizeInBits() == 128) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType12(CnstVal);
SDValue Mov = DAG.getNode(ARM64ISD::FMOV, dl, MVT::v2f64,
DAG.getConstant(CnstVal, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
CnstVal = ~CnstVal;
if (ARM64_AM::isAdvSIMDModImmType1(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType1(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MVNIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType2(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType2(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MVNIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType3(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType3(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MVNIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(16, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType4(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType4(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MVNIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(24, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType5(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType5(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::MVNIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(0, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType6(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType6(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v8i16 : MVT::v4i16;
SDValue Mov = DAG.getNode(ARM64ISD::MVNIshift, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(8, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType7(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType7(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MVNImsl, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(264, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
if (ARM64_AM::isAdvSIMDModImmType8(CnstVal)) {
CnstVal = ARM64_AM::encodeAdvSIMDModImmType8(CnstVal);
MVT MovTy = (VT.getSizeInBits() == 128) ? MVT::v4i32 : MVT::v2i32;
SDValue Mov = DAG.getNode(ARM64ISD::MVNImsl, dl, MovTy,
DAG.getConstant(CnstVal, MVT::i32),
DAG.getConstant(272, MVT::i32));
return DAG.getNode(ISD::BITCAST, dl, VT, Mov);
}
}
if (SecondTry) goto FailedModImm;
SecondTry = true;
CnstBits = UndefBits;
goto AttemptModImm;
}
FailedModImm:
unsigned NumElts = VT.getVectorNumElements();
bool isOnlyLowElement = true;
bool usesOnlyOneValue = true;
bool usesOnlyOneConstantValue = true;
bool isConstant = true;
unsigned NumConstantLanes = 0;
SDValue Value;
SDValue ConstantValue;
for (unsigned i = 0; i < NumElts; ++i) {
SDValue V = Op.getOperand(i);
if (V.getOpcode() == ISD::UNDEF)
continue;
if (i > 0)
isOnlyLowElement = false;
if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V))
isConstant = false;
if (isa<ConstantSDNode>(V) || isa<ConstantFPSDNode>(V)) {
++NumConstantLanes;
if (!ConstantValue.getNode())
ConstantValue = V;
else if (ConstantValue != V)
usesOnlyOneConstantValue = false;
}
if (!Value.getNode())
Value = V;
else if (V != Value)
usesOnlyOneValue = false;
}
if (!Value.getNode())
return DAG.getUNDEF(VT);
if (isOnlyLowElement)
return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value);
if (usesOnlyOneValue) {
if (!isConstant) {
if (Value.getOpcode() != ISD::EXTRACT_VECTOR_ELT ||
Value.getValueType() != VT)
return DAG.getNode(ARM64ISD::DUP, dl, VT, Value);
SDValue Lane = Value.getOperand(1);
Value = Value.getOperand(0);
if (Value.getValueType().getSizeInBits() == 64)
Value = WidenVector(Value, DAG);
unsigned Opcode = getDUPLANEOp(VT.getVectorElementType());
return DAG.getNode(Opcode, dl, VT, Value, Lane);
}
if (VT.getVectorElementType().isFloatingPoint()) {
SmallVector<SDValue, 8> Ops;
MVT NewType = (VT.getVectorElementType() == MVT::f32) ?
MVT::i32 : MVT::i64;
for (unsigned i = 0; i < NumElts; ++i)
Ops.push_back(DAG.getNode(ISD::BITCAST, dl, NewType,
Op.getOperand(i)));
EVT VecVT = EVT::getVectorVT(*DAG.getContext(), NewType, NumElts);
SDValue Val = DAG.getNode(ISD::BUILD_VECTOR, dl, VecVT, &Ops[0], NumElts);
Val = LowerBUILD_VECTOR(Val, DAG);
if (Val.getNode())
return DAG.getNode(ISD::BITCAST, dl, VT, Val);
}
}
if (NumConstantLanes > 0 && usesOnlyOneConstantValue) {
SDValue Val = DAG.getNode(ARM64ISD::DUP, dl, VT, ConstantValue);
for (unsigned i = 0; i < NumElts; ++i) {
SDValue V = Op.getOperand(i);
SDValue LaneIdx = DAG.getConstant(i, MVT::i64);
if (!isa<ConstantSDNode>(V) && !isa<ConstantFPSDNode>(V)) {
Val = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, VT, Val, V, LaneIdx);
}
}
return Val;
}
if (isConstant)
return SDValue();
if (NumElts >= 4) {
SDValue shuffle = ReconstructShuffle(Op, DAG);
if (shuffle != SDValue())
return shuffle;
}
if (!isConstant && !usesOnlyOneValue) {
SDValue Vec = DAG.getUNDEF(VT);
SDValue Op0 = Op.getOperand(0);
unsigned ElemSize = VT.getVectorElementType().getSizeInBits();
unsigned i = 0;
if (Op0.getOpcode() != ISD::UNDEF && (ElemSize == 32 || ElemSize == 64)) {
unsigned SubIdx = ElemSize == 32 ? ARM64::ssub : ARM64::dsub;
MachineSDNode *N =
DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, dl, VT, Vec, Op0,
DAG.getTargetConstant(SubIdx, MVT::i32));
Vec = SDValue(N, 0);
++i;
}
for (; i < NumElts; ++i) {
SDValue V = Op.getOperand(i);
if (V.getOpcode() == ISD::UNDEF)
continue;
SDValue LaneIdx = DAG.getConstant(i, MVT::i64);
Vec = DAG.getNode(ISD::INSERT_VECTOR_ELT, dl, VT, Vec, V, LaneIdx);
}
return Vec;
}
return SDValue();
}
SDValue ARM64TargetLowering::
LowerINSERT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
assert(Op.getOpcode() == ISD::INSERT_VECTOR_ELT && "Unknown opcode!");
if (!isa<ConstantSDNode>(Op.getOperand(2)))
return SDValue();
EVT VT = Op.getOperand(0).getValueType();
if (VT == MVT::v16i8 || VT == MVT::v8i16 || VT == MVT::v4i32 ||
VT == MVT::v2i64 || VT == MVT::v4f32 || VT == MVT::v2f64)
return Op;
if (VT != MVT::v8i8 && VT != MVT::v4i16 && VT != MVT::v2i32 &&
VT != MVT::v1i64 && VT != MVT::v2f32)
return SDValue();
SDLoc DL(Op);
SDValue WideVec = WidenVector(Op.getOperand(0), DAG);
EVT WideTy = WideVec.getValueType();
SDValue Node = DAG.getNode(ISD::INSERT_VECTOR_ELT, DL, WideTy, WideVec,
Op.getOperand(1), Op.getOperand(2));
return NarrowVector(Node, DAG);
}
SDValue ARM64TargetLowering::
LowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
assert(Op.getOpcode() == ISD::EXTRACT_VECTOR_ELT && "Unknown opcode!");
if (!isa<ConstantSDNode>(Op.getOperand(1)))
return SDValue();
EVT VT = Op.getOperand(0).getValueType();
if (VT == MVT::v16i8 || VT == MVT::v8i16 || VT == MVT::v4i32 ||
VT == MVT::v2i64 || VT == MVT::v4f32 || VT == MVT::v2f64)
return Op;
if (VT != MVT::v8i8 && VT != MVT::v4i16 && VT != MVT::v2i32 &&
VT != MVT::v1i64 && VT != MVT::v2f32)
return SDValue();
SDLoc DL(Op);
SDValue WideVec = WidenVector(Op.getOperand(0), DAG);
EVT WideTy = WideVec.getValueType();
EVT ExtrTy = WideTy.getVectorElementType();
if (ExtrTy == MVT::i16 || ExtrTy == MVT::i8) ExtrTy = MVT::i32;
return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL,
ExtrTy, WideVec, Op.getOperand(1));
}
SDValue ARM64TargetLowering::
LowerSCALAR_TO_VECTOR(SDValue Op, SelectionDAG &DAG) const {
assert(Op.getOpcode() == ISD::SCALAR_TO_VECTOR && "Unknown opcode!");
SDValue Op0 = Op->getOperand(0);
if (Op0->getOpcode() != ISD::INTRINSIC_WO_CHAIN)
return Op;
unsigned IID = getIntrinsicID(Op0.getNode());
unsigned SubIdx;
switch (IID) {
default:
return Op;
case Intrinsic::arm64_neon_uaddv:
case Intrinsic::arm64_neon_saddv:
case Intrinsic::arm64_neon_uaddlv:
case Intrinsic::arm64_neon_saddlv:
switch (Op0.getValueType().getSizeInBits()) {
default:
llvm_unreachable("Illegal result size from ARM64 vector intrinsic!");
case 8: SubIdx = ARM64::bsub; break;
case 16: SubIdx = ARM64::hsub; break;
case 32: SubIdx = ARM64::ssub; break;
case 64: SubIdx = ARM64::dsub; break;
}
}
MachineSDNode *N =
DAG.getMachineNode(TargetOpcode::INSERT_SUBREG, SDLoc(Op),
Op.getValueType(),
DAG.getUNDEF(Op0.getValueType()), Op0,
DAG.getTargetConstant(SubIdx, MVT::i32));
return SDValue(N, 0);
}
SDValue ARM64TargetLowering::
LowerEXTRACT_SUBVECTOR(SDValue Op, SelectionDAG &DAG) const {
EVT VT = Op.getOperand(0).getValueType();
SDLoc dl(Op);
if (!VT.isVector())
return SDValue();
ConstantSDNode *Cst = dyn_cast<ConstantSDNode>(Op.getOperand(1));
if (!Cst) return SDValue();
unsigned Val = Cst->getZExtValue();
unsigned Size = Op.getValueType().getSizeInBits();
if (Val == 0) {
switch (Size) {
case 8:
return DAG.getTargetExtractSubreg(ARM64::bsub, dl,
Op.getValueType(), Op.getOperand(0));
case 16:
return DAG.getTargetExtractSubreg(ARM64::hsub, dl,
Op.getValueType(), Op.getOperand(0));
case 32:
return DAG.getTargetExtractSubreg(ARM64::ssub, dl,
Op.getValueType(), Op.getOperand(0));
case 64:
return DAG.getTargetExtractSubreg(ARM64::dsub, dl,
Op.getValueType(), Op.getOperand(0));
default:
llvm_unreachable("Unexpected vector type in extract_subvector!");
}
}
if (Size == 64 && Val * VT.getVectorElementType().getSizeInBits() == 64)
return Op;
return SDValue();
}
bool ARM64TargetLowering::
isShuffleMaskLegal(const SmallVectorImpl<int> &M, EVT VT) const {
if (VT.getVectorNumElements() == 4 &&
(VT.is128BitVector() || VT.is64BitVector())) {
unsigned PFIndexes[4];
for (unsigned i = 0; i != 4; ++i) {
if (M[i] < 0)
PFIndexes[i] = 8;
else
PFIndexes[i] = M[i];
}
unsigned PFTableIndex =
PFIndexes[0]*9*9*9+PFIndexes[1]*9*9+PFIndexes[2]*9+PFIndexes[3];
unsigned PFEntry = PerfectShuffleTable[PFTableIndex];
unsigned Cost = (PFEntry >> 30);
if (Cost <= 4)
return true;
}
bool ReverseVEXT;
unsigned Imm, WhichResult;
return (ShuffleVectorSDNode::isSplatMask(&M[0], VT) ||
isREVMask(M, VT, 64) ||
isREVMask(M, VT, 32) ||
isREVMask(M, VT, 16) ||
isEXTMask(M, VT, ReverseVEXT, Imm) ||
isTRNMask(M, VT, WhichResult) ||
isUZPMask(M, VT, WhichResult) ||
isZIPMask(M, VT, WhichResult) ||
isTRN_v_undef_Mask(M, VT, WhichResult) ||
isUZP_v_undef_Mask(M, VT, WhichResult) ||
isZIP_v_undef_Mask(M, VT, WhichResult));
}
static bool getVShiftImm(SDValue Op, unsigned ElementBits, int64_t &Cnt) {
while (Op.getOpcode() == ISD::BITCAST)
Op = Op.getOperand(0);
BuildVectorSDNode *BVN = dyn_cast<BuildVectorSDNode>(Op.getNode());
APInt SplatBits, SplatUndef;
unsigned SplatBitSize;
bool HasAnyUndefs;
if (! BVN || ! BVN->isConstantSplat(SplatBits, SplatUndef, SplatBitSize,
HasAnyUndefs, ElementBits) ||
SplatBitSize > ElementBits)
return false;
Cnt = SplatBits.getSExtValue();
return true;
}
static bool isVShiftLImm(SDValue Op, EVT VT, bool isLong, int64_t &Cnt) {
assert(VT.isVector() && "vector shift count is not a vector type");
unsigned ElementBits = VT.getVectorElementType().getSizeInBits();
if (! getVShiftImm(Op, ElementBits, Cnt))
return false;
return (Cnt >= 0 && (isLong ? Cnt-1 : Cnt) < ElementBits);
}
static bool isVShiftRImm(SDValue Op, EVT VT, bool isNarrow, bool isIntrinsic,
int64_t &Cnt) {
assert(VT.isVector() && "vector shift count is not a vector type");
unsigned ElementBits = VT.getVectorElementType().getSizeInBits();
if (! getVShiftImm(Op, ElementBits, Cnt))
return false;
if (isIntrinsic)
Cnt = -Cnt;
return (Cnt >= 1 && Cnt <= (isNarrow ? ElementBits/2 : ElementBits));
}
SDValue ARM64TargetLowering::
LowerVectorSRA_SRL_SHL(SDValue Op, SelectionDAG &DAG) const {
EVT VT = Op.getValueType();
SDLoc DL(Op);
int64_t Cnt;
if (!Op.getOperand(1).getValueType().isVector()) return Op;
unsigned EltSize = VT.getVectorElementType().getSizeInBits();
switch (Op.getOpcode()) {
default: llvm_unreachable("unexpected shift opcode");
case ISD::SHL:
if (isVShiftLImm(Op.getOperand(1), VT, false, Cnt) && Cnt < EltSize)
return DAG.getNode(ARM64ISD::VSHL, SDLoc(Op), VT, Op.getOperand(0),
DAG.getConstant(Cnt, MVT::i32));
return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, VT,
DAG.getConstant(Intrinsic::arm64_neon_ushl, MVT::i32),
Op.getOperand(0), Op.getOperand(1));
case ISD::SRA:
case ISD::SRL:
if (isVShiftRImm(Op.getOperand(1), VT, false, false, Cnt) &&
Cnt < EltSize) {
unsigned Opc = (Op.getOpcode() == ISD::SRA) ? ARM64ISD::VASHR
: ARM64ISD::VLSHR;
return DAG.getNode(Opc, SDLoc(Op), VT, Op.getOperand(0),
DAG.getConstant(Cnt, MVT::i32));
}
unsigned Opc = (Op.getOpcode() == ISD::SRA) ? Intrinsic::arm64_neon_sshl
: Intrinsic::arm64_neon_ushl;
SDValue NegShift = DAG.getNode(ARM64ISD::NEG, DL, VT, Op.getOperand(1));
SDValue NegShiftLeft = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, VT,
DAG.getConstant(Opc, MVT::i32),
Op.getOperand(0), NegShift);
return NegShiftLeft;
}
return SDValue();
}
static SDValue EmitVectorComparison(SDValue LHS, SDValue RHS,
ARM64CC::CondCode CC, bool NoNans,
EVT VT, SDLoc dl,
SelectionDAG &DAG) {
EVT SrcVT = LHS.getValueType();
BuildVectorSDNode *BVN = dyn_cast<BuildVectorSDNode>(RHS.getNode());
APInt CnstBits(VT.getSizeInBits(), 0);
APInt UndefBits(VT.getSizeInBits(), 0);
bool IsCnst = BVN && resolveBuildVector(BVN, CnstBits, UndefBits);
bool IsZero = IsCnst && (CnstBits == 0);
if (SrcVT.getVectorElementType().isFloatingPoint()) {
switch (CC) {
default:
return SDValue();
case ARM64CC::NE: {
SDValue Fcmeq;
if (IsZero)
Fcmeq = DAG.getNode(ARM64ISD::FCMEQz, dl, VT, LHS);
else
Fcmeq = DAG.getNode(ARM64ISD::FCMEQ, dl, VT, LHS, RHS);
return DAG.getNode(ARM64ISD::NOT, dl, VT, Fcmeq);
}
case ARM64CC::EQ:
if (IsZero) return DAG.getNode(ARM64ISD::FCMEQz, dl, VT, LHS);
return DAG.getNode(ARM64ISD::FCMEQ, dl, VT, LHS, RHS);
case ARM64CC::GE:
if (IsZero) return DAG.getNode(ARM64ISD::FCMGEz, dl, VT, LHS);
return DAG.getNode(ARM64ISD::FCMGE, dl, VT, LHS, RHS);
case ARM64CC::GT:
if (IsZero) return DAG.getNode(ARM64ISD::FCMGTz, dl, VT, LHS);
return DAG.getNode(ARM64ISD::FCMGT, dl, VT, LHS, RHS);
case ARM64CC::LS:
if (IsZero) return DAG.getNode(ARM64ISD::FCMLEz, dl, VT, LHS);
return DAG.getNode(ARM64ISD::FCMGE, dl, VT, RHS, LHS);
case ARM64CC::LT:
if (!NoNans) return SDValue();
case ARM64CC::MI:
if (IsZero) return DAG.getNode(ARM64ISD::FCMLTz, dl, VT, LHS);
return DAG.getNode(ARM64ISD::FCMGT, dl, VT, RHS, LHS);
}
}
switch (CC) {
default:
return SDValue();
case ARM64CC::NE: {
SDValue Cmeq = DAG.getNode(ARM64ISD::CMEQ, dl, VT, LHS, RHS);
return DAG.getNode(ARM64ISD::NOT, dl, VT, Cmeq);
}
case ARM64CC::EQ:
return DAG.getNode(ARM64ISD::CMEQ, dl, VT, LHS, RHS);
case ARM64CC::GE:
return DAG.getNode(ARM64ISD::CMGE, dl, VT, LHS, RHS);
case ARM64CC::GT:
return DAG.getNode(ARM64ISD::CMGT, dl, VT, LHS, RHS);
case ARM64CC::LE:
return DAG.getNode(ARM64ISD::CMGE, dl, VT, RHS, LHS);
case ARM64CC::LS:
return DAG.getNode(ARM64ISD::CMHS, dl, VT, RHS, LHS);
case ARM64CC::CC:
return DAG.getNode(ARM64ISD::CMHI, dl, VT, RHS, LHS);
case ARM64CC::LT:
return DAG.getNode(ARM64ISD::CMGT, dl, VT, RHS, LHS);
case ARM64CC::HI:
return DAG.getNode(ARM64ISD::CMHI, dl, VT, LHS, RHS);
case ARM64CC::CS:
return DAG.getNode(ARM64ISD::CMHS, dl, VT, LHS, RHS);
}
}
SDValue ARM64TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) const {
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
SDValue LHS = Op.getOperand(0);
SDValue RHS = Op.getOperand(1);
SDLoc dl(Op);
if (LHS.getValueType().getVectorElementType().isInteger()) {
assert(LHS.getValueType() == RHS.getValueType());
ARM64CC::CondCode ARM64CC = changeIntCCToARM64CC(CC);
return EmitVectorComparison(LHS, RHS, ARM64CC, false, Op.getValueType(),
dl, DAG);
}
assert(LHS.getValueType().getVectorElementType() == MVT::f32 ||
LHS.getValueType().getVectorElementType() == MVT::f64);
ARM64CC::CondCode CC1, CC2;
changeFPCCToARM64CC(CC, CC1, CC2);
bool NoNaNs = getTargetMachine().Options.NoNaNsFPMath;
SDValue Cmp1 = EmitVectorComparison(LHS, RHS, CC1, NoNaNs,
Op.getValueType(), dl, DAG);
if (!Cmp1.getNode()) return SDValue();
if (CC2 != ARM64CC::AL) {
SDValue Cmp2 = EmitVectorComparison(LHS, RHS, CC2, NoNaNs,
Op.getValueType(), dl, DAG);
if (!Cmp2.getNode()) return SDValue();
return DAG.getNode(ISD::OR, dl, Cmp1.getValueType(), Cmp1, Cmp2);
}
return Cmp1;
}
bool ARM64TargetLowering::getTgtMemIntrinsic(IntrinsicInfo &Info,
const CallInst &I,
unsigned Intrinsic) const {
switch (Intrinsic) {
case Intrinsic::arm64_neon_ld2:
case Intrinsic::arm64_neon_ld3:
case Intrinsic::arm64_neon_ld4:
case Intrinsic::arm64_neon_ld2lane:
case Intrinsic::arm64_neon_ld3lane:
case Intrinsic::arm64_neon_ld4lane:
case Intrinsic::arm64_neon_ld2r:
case Intrinsic::arm64_neon_ld3r:
case Intrinsic::arm64_neon_ld4r: {
Info.opc = ISD::INTRINSIC_W_CHAIN;
uint64_t NumElts = getDataLayout()->getTypeAllocSize(I.getType()) / 8;
Info.memVT = EVT::getVectorVT(I.getType()->getContext(), MVT::i64, NumElts);
Info.ptrVal = I.getArgOperand(I.getNumArgOperands() - 1);
Info.offset = 0;
Info.align = 0;
Info.vol = false; Info.readMem = true;
Info.writeMem = false;
return true;
}
case Intrinsic::arm64_neon_st2:
case Intrinsic::arm64_neon_st3:
case Intrinsic::arm64_neon_st4:
case Intrinsic::arm64_neon_st2lane:
case Intrinsic::arm64_neon_st3lane:
case Intrinsic::arm64_neon_st4lane: {
Info.opc = ISD::INTRINSIC_VOID;
unsigned NumElts = 0;
for (unsigned ArgI = 1, ArgE = I.getNumArgOperands(); ArgI < ArgE; ++ArgI) {
Type *ArgTy = I.getArgOperand(ArgI)->getType();
if (!ArgTy->isVectorTy())
break;
NumElts += getDataLayout()->getTypeAllocSize(ArgTy) / 8;
}
Info.memVT = EVT::getVectorVT(I.getType()->getContext(), MVT::i64, NumElts);
Info.ptrVal = I.getArgOperand(I.getNumArgOperands() - 1);
Info.offset = 0;
Info.align = 0;
Info.vol = false; Info.readMem = false;
Info.writeMem = true;
return true;
}
case Intrinsic::arm64_ldxr: {
PointerType *PtrTy = cast<PointerType>(I.getArgOperand(0)->getType());
Info.opc = ISD::INTRINSIC_W_CHAIN;
Info.memVT = MVT::getVT(PtrTy->getElementType());
Info.ptrVal = I.getArgOperand(0);
Info.offset = 0;
Info.align = getDataLayout()->getABITypeAlignment(PtrTy->getElementType());
Info.vol = true;
Info.readMem = true;
Info.writeMem = false;
return true;
}
case Intrinsic::arm64_stxr: {
PointerType *PtrTy = cast<PointerType>(I.getArgOperand(1)->getType());
Info.opc = ISD::INTRINSIC_W_CHAIN;
Info.memVT = MVT::getVT(PtrTy->getElementType());
Info.ptrVal = I.getArgOperand(1);
Info.offset = 0;
Info.align = getDataLayout()->getABITypeAlignment(PtrTy->getElementType());
Info.vol = true;
Info.readMem = false;
Info.writeMem = true;
return true;
}
case Intrinsic::arm64_ldxp: {
Info.opc = ISD::INTRINSIC_W_CHAIN;
Info.memVT = MVT::i128;
Info.ptrVal = I.getArgOperand(0);
Info.offset = 0;
Info.align = 16;
Info.vol = true;
Info.readMem = true;
Info.writeMem = false;
return true;
}
case Intrinsic::arm64_stxp: {
Info.opc = ISD::INTRINSIC_W_CHAIN;
Info.memVT = MVT::i128;
Info.ptrVal = I.getArgOperand(2);
Info.offset = 0;
Info.align = 16;
Info.vol = true;
Info.readMem = false;
Info.writeMem = true;
return true;
}
default:
break;
}
return false;
}
bool ARM64TargetLowering::isTruncateFree(Type *Ty1, Type *Ty2) const {
if (!Ty1->isIntegerTy() || !Ty2->isIntegerTy())
return false;
unsigned NumBits1 = Ty1->getPrimitiveSizeInBits();
unsigned NumBits2 = Ty2->getPrimitiveSizeInBits();
if (NumBits1 <= NumBits2)
return false;
return true;
}
bool ARM64TargetLowering::isTruncateFree(EVT VT1, EVT VT2) const {
if (!VT1.isInteger() || !VT2.isInteger())
return false;
unsigned NumBits1 = VT1.getSizeInBits();
unsigned NumBits2 = VT2.getSizeInBits();
if (NumBits1 <= NumBits2)
return false;
return true;
}
bool ARM64TargetLowering::isZExtFree(Type *Ty1, Type *Ty2) const {
if (!Ty1->isIntegerTy() || !Ty2->isIntegerTy())
return false;
unsigned NumBits1 = Ty1->getPrimitiveSizeInBits();
unsigned NumBits2 = Ty2->getPrimitiveSizeInBits();
if (NumBits1 == 32 && NumBits2 == 64)
return true;
return false;
}
bool ARM64TargetLowering::isZExtFree(EVT VT1, EVT VT2) const {
if (!VT1.isInteger() || !VT2.isInteger())
return false;
unsigned NumBits1 = VT1.getSizeInBits();
unsigned NumBits2 = VT2.getSizeInBits();
if (NumBits1 == 32 && NumBits2 == 64)
return true;
return false;
}
bool ARM64TargetLowering::isZExtFree(SDValue Val, EVT VT2) const {
EVT VT1 = Val.getValueType();
if (isZExtFree(VT1, VT2)) {
return true;
}
if (Val.getOpcode() != ISD::LOAD)
return false;
return (VT1.isSimple() && VT1.isInteger() &&
VT2.isSimple() && VT2.isInteger() && VT1.getSizeInBits() <= 32);
}
bool ARM64TargetLowering::hasPairedLoad(Type *LoadedType,
unsigned &RequiredAligment) const {
if (!LoadedType->isIntegerTy() && !LoadedType->isFloatTy())
return false;
RequiredAligment = 0;
unsigned NumBits = LoadedType->getPrimitiveSizeInBits();
return NumBits == 32 || NumBits == 64;
}
bool ARM64TargetLowering::hasPairedLoad(EVT LoadedType,
unsigned &RequiredAligment) const {
if (!LoadedType.isSimple() ||
(!LoadedType.isInteger() && !LoadedType.isFloatingPoint()))
return false;
RequiredAligment = 0;
unsigned NumBits = LoadedType.getSizeInBits();
return NumBits == 32 || NumBits == 64;
}
static bool memOpAlign(unsigned DstAlign, unsigned SrcAlign,
unsigned AlignCheck) {
return ((SrcAlign == 0 || SrcAlign % AlignCheck == 0) &&
(DstAlign == 0 || DstAlign % AlignCheck == 0));
}
EVT
ARM64TargetLowering::getOptimalMemOpType(uint64_t Size,
unsigned DstAlign, unsigned SrcAlign,
bool IsMemset, bool ZeroMemset,
bool MemcpyStrSrc,
MachineFunction &MF) const {
bool Fast;
const Function *F = MF.getFunction();
if (!IsMemset && Size >= 16 &&
!F->getAttributes().hasAttribute(AttributeSet::FunctionIndex,
Attribute::NoImplicitFloat) &&
(memOpAlign(SrcAlign, DstAlign, 16) ||
(allowsUnalignedMemoryAccesses(MVT::v2i64, &Fast) && Fast)))
return MVT::v2i64;
return Size >= 8 ? MVT::i64 : MVT::i32;
}
bool ARM64TargetLowering::isLegalAddImmediate(int64_t Immed) const {
if ((Immed >> 12) == 0 ||
((Immed & 0xfff) == 0 && Immed >> 24 == 0))
return true;
return false;
}
bool ARM64TargetLowering::isLegalICmpImmediate(int64_t Immed) const {
if (Immed < 0) Immed *= -1;
return isLegalAddImmediate(Immed);
}
bool ARM64TargetLowering::isLegalAddressingMode(const AddrMode &AM,
Type *Ty) const {
if (AM.BaseGV)
return false;
if (AM.HasBaseReg && AM.BaseOffs && AM.Scale)
return false;
uint64_t NumBytes = 0;
if (Ty->isSized()) {
uint64_t NumBits = getDataLayout()->getTypeSizeInBits(Ty);
NumBytes = NumBits / 8;
if (!isPowerOf2_64(NumBits))
NumBytes = 0;
}
if (!AM.Scale) {
int64_t Offset = AM.BaseOffs;
if (Offset >= -(1LL << 9) && Offset <= (1LL << 9)-1)
return true;
unsigned shift = Log2_64(NumBytes);
if (NumBytes && Offset > 0 && (Offset / NumBytes) <= (1LL << 12)-1 &&
(Offset >> shift) << shift == Offset)
return true;
return false;
}
if (!AM.Scale || AM.Scale == 1 ||
(AM.Scale > 0 && (uint64_t)AM.Scale == NumBytes))
return true;
return false;
}
int ARM64TargetLowering::getScalingFactorCost(const AddrMode &AM,
Type *Ty) const {
if (isLegalAddressingMode(AM, Ty))
return AM.Scale != 0 && AM.Scale != 1;
return -1;
}
bool
ARM64TargetLowering::isFMAFasterThanFMulAndFAdd(EVT VT) const {
VT = VT.getScalarType();
if (!VT.isSimple())
return false;
switch (VT.getSimpleVT().SimpleTy) {
case MVT::f32:
case MVT::f64:
return true;
default:
break;
}
return false;
}
const uint16_t *ARM64TargetLowering::getScratchRegisters(CallingConv::ID) const{
static const uint16_t ScratchRegs[] = { ARM64::X16, ARM64::X17, ARM64::LR, 0 };
return ScratchRegs;
}
static SDValue performIntegerAbsCombine(SDNode *N, SelectionDAG &DAG) {
EVT VT = N->getValueType(0);
SDValue N0 = N->getOperand(0);
SDValue N1 = N->getOperand(1);
SDLoc DL(N);
if (VT.isInteger() && N->getOpcode() == ISD::XOR &&
N0.getOpcode() == ISD::ADD &&
N0.getOperand(1) == N1 &&
N1.getOpcode() == ISD::SRA &&
N1.getOperand(0) == N0.getOperand(0))
if (ConstantSDNode *Y1C = dyn_cast<ConstantSDNode>(N1.getOperand(1)))
if (Y1C->getAPIntValue() == VT.getSizeInBits()-1) {
SDValue Neg = DAG.getNode(ISD::SUB, DL,
VT,
DAG.getConstant(0, VT), N0.getOperand(0));
SDValue Cmp = DAG.getNode(ARM64ISD::SUBS, DL,
DAG.getVTList(VT, MVT::i32),
N0.getOperand(0), DAG.getConstant(0, VT));
return DAG.getNode(ARM64ISD::CSEL, DL, VT, N0.getOperand(0), Neg,
DAG.getConstant(ARM64CC::PL, MVT::i32),
SDValue(Cmp.getNode(), 1));
}
return SDValue();
}
static SDValue performXorCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const ARM64Subtarget *Subtarget) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
return performIntegerAbsCombine(N, DAG);
}
static SDValue performMulCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const ARM64Subtarget *Subtarget) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(1))) {
APInt Value = C->getAPIntValue();
EVT VT = N->getValueType(0);
APInt VP1 = Value + 1;
if (VP1.isPowerOf2()) {
SDValue ShiftedVal = DAG.getNode(ISD::SHL, SDLoc(N), VT, N->getOperand(0),
DAG.getConstant(VP1.logBase2(), VT));
return DAG.getNode(ISD::SUB, SDLoc(N), VT, ShiftedVal, N->getOperand(0));
}
APInt VM1 = Value - 1;
if (VM1.isPowerOf2()) {
SDValue ShiftedVal = DAG.getNode(ISD::SHL, SDLoc(N), VT, N->getOperand(0),
DAG.getConstant(VM1.logBase2(), VT));
return DAG.getNode(ISD::ADD, SDLoc(N), VT, ShiftedVal, N->getOperand(0));
}
}
return SDValue();
}
static SDValue performIntToFpCombine(SDNode *N, SelectionDAG &DAG) {
EVT VT = N->getValueType(0);
if (VT != MVT::f32 && VT != MVT::f64)
return SDValue();
if (VT.getSizeInBits() != N->getOperand(0).getValueType().getSizeInBits())
return SDValue();
SDValue N0 = N->getOperand(0);
if (ISD::isNormalLoad(N0.getNode()) && N0.hasOneUse() &&
!cast<LoadSDNode>(N0)->isVolatile()) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
SDValue Load = DAG.getLoad(VT, SDLoc(N), LN0->getChain(),
LN0->getBasePtr(), LN0->getPointerInfo(),
LN0->isVolatile(), LN0->isNonTemporal(),
LN0->isInvariant(), LN0->getAlignment());
DAG.ReplaceAllUsesOfValueWith(SDValue(LN0, 1), Load.getValue(1));
unsigned Opcode = (N->getOpcode() == ISD::SINT_TO_FP)
? ARM64ISD::SITOF : ARM64ISD::UITOF;
return DAG.getNode(Opcode, SDLoc(N), VT, Load);
}
return SDValue();
}
static bool findEXTRHalf(SDValue N, SDValue &Src, uint32_t &ShiftAmount,
bool &FromHi) {
if (N.getOpcode() == ISD::SHL)
FromHi = false;
else if (N.getOpcode() == ISD::SRL)
FromHi = true;
else
return false;
if (!isa<ConstantSDNode>(N.getOperand(1)))
return false;
ShiftAmount = N->getConstantOperandVal(1);
Src = N->getOperand(0);
return true;
}
static SDValue tryCombineToEXTR(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI) {
SelectionDAG &DAG = DCI.DAG;
SDLoc DL(N);
EVT VT = N->getValueType(0);
assert(N->getOpcode() == ISD::OR && "Unexpected root");
if (VT != MVT::i32 && VT != MVT::i64)
return SDValue();
SDValue LHS;
uint32_t ShiftLHS = 0;
bool LHSFromHi = 0;
if (!findEXTRHalf(N->getOperand(0), LHS, ShiftLHS, LHSFromHi))
return SDValue();
SDValue RHS;
uint32_t ShiftRHS = 0;
bool RHSFromHi = 0;
if (!findEXTRHalf(N->getOperand(1), RHS, ShiftRHS, RHSFromHi))
return SDValue();
if (LHSFromHi == RHSFromHi)
return SDValue();
if (ShiftLHS + ShiftRHS != VT.getSizeInBits())
return SDValue();
if (LHSFromHi) {
std::swap(LHS, RHS);
std::swap(ShiftLHS, ShiftRHS);
}
return DAG.getNode(ARM64ISD::EXTR, DL, VT,
LHS, RHS,
DAG.getConstant(ShiftRHS, MVT::i64));
}
static SDValue performORCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
const ARM64Subtarget *Subtarget) {
if (!EnableARM64ExtrGeneration)
return SDValue();
SelectionDAG &DAG = DCI.DAG;
EVT VT = N->getValueType(0);
if (!DAG.getTargetLoweringInfo().isTypeLegal(VT))
return SDValue();
SDValue Res = tryCombineToEXTR(N, DCI);
if (Res.getNode())
return Res;
return SDValue();
}
static SDValue performBitcastCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
EVT VT = N->getValueType(0);
if (!VT.isVector()) return SDValue();
if (VT.getSimpleVT().getSizeInBits() != 64) return SDValue();
SDValue Op0 = N->getOperand(0);
if (Op0->getOpcode() != ISD::EXTRACT_SUBVECTOR &&
!(Op0->isMachineOpcode() &&
Op0->getMachineOpcode() == ARM64::EXTRACT_SUBREG))
return SDValue();
uint64_t idx = cast<ConstantSDNode>(Op0->getOperand(1))->getZExtValue();
if (Op0->getOpcode() == ISD::EXTRACT_SUBVECTOR) {
if (Op0->getValueType(0).getVectorNumElements() != idx && idx != 0)
return SDValue();
} else if (Op0->getMachineOpcode() == ARM64::EXTRACT_SUBREG) {
if (idx != ARM64::dsub)
return SDValue();
idx = 0;
}
if (Op0->getOperand(0)->getOpcode() != ISD::BITCAST) return SDValue();
SDValue Source = Op0->getOperand(0)->getOperand(0);
EVT SVT = Source->getValueType(0);
if (SVT.getVectorNumElements() != VT.getVectorNumElements() * 2)
return SDValue();
DEBUG(dbgs() << "arm64-lower: bitcast extract_subvector simplification\n");
SDLoc dl(N);
unsigned NumElements = VT.getVectorNumElements();
if (idx) {
SDValue HalfIdx = DAG.getConstant(NumElements, MVT::i64);
return DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VT, Source, HalfIdx);
} else {
SDValue SubReg = DAG.getTargetConstant(ARM64::dsub, MVT::i32);
return SDValue(DAG.getMachineNode(TargetOpcode::EXTRACT_SUBREG, dl, VT, Source, SubReg), 0);
}
}
static SDValue performConcatVectorsCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
SDValue Op1 = N->getOperand(1);
if (Op1->getOpcode() != ISD::BITCAST)
return SDValue();
SDValue RHS = Op1->getOperand(0);
MVT RHSTy = RHS.getValueType().getSimpleVT();
if (!RHSTy.isVector())
return SDValue();
DEBUG(dbgs() << "arm64-lower: concat_vectors bitcast simplification\n");
SDLoc dl(N);
EVT VT = N->getValueType(0);
MVT ConcatTy = MVT::getVectorVT(RHSTy.getVectorElementType(),
RHSTy.getVectorNumElements() * 2);
return DAG.getNode(ISD::BITCAST, dl, VT,
DAG.getNode(ISD::CONCAT_VECTORS, dl, ConcatTy,
DAG.getNode(ISD::BITCAST, dl, RHSTy,
N->getOperand(0)),
RHS));
}
static SDValue tryCombineFixedPointConvert(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
SDValue Op1 = N->getOperand(1);
if (Op1.getOpcode() == ISD::EXTRACT_VECTOR_ELT) {
SDValue IID = N->getOperand(0);
SDValue Shift = N->getOperand(2);
SDValue Vec = Op1.getOperand(0);
SDValue Lane = Op1.getOperand(1);
EVT ResTy = N->getValueType(0);
EVT VecResTy;
SDLoc DL(N);
assert(Vec.getValueType().getSizeInBits() == 128 &&
"unexpected vector size on extract_vector_elt!");
if (Vec.getValueType() == MVT::v4i32)
VecResTy = MVT::v4f32;
else if (Vec.getValueType() == MVT::v2i64)
VecResTy = MVT::v2f64;
else
assert(0 && "unexpected vector type!");
SDValue Convert = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, VecResTy, IID,
Vec, Shift);
return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ResTy, Convert, Lane);
}
return SDValue();
}
SDValue normalizeExtractHigh(SDNode *N, SelectionDAG &DAG) {
while (N->getOpcode() == ISD::BITCAST)
N = N->getOperand(0).getNode();
if (N->getOpcode() != ISD::EXTRACT_SUBVECTOR)
return SDValue();
uint64_t idx = cast<ConstantSDNode>(N->getOperand(1))->getZExtValue();
EVT SrcVT = N->getOperand(0).getValueType();
unsigned SrcElts = SrcVT.getVectorNumElements();
unsigned DstElts = N->getValueType(0).getVectorNumElements();
if ((SrcElts == 2 * DstElts) && (idx == DstElts)) {
if (DstElts == 1)
return SDValue(N, 0);
#ifndef NDEBUG
unsigned SrcBits = SrcVT.getVectorElementType().getSizeInBits();
assert(SrcElts * SrcBits == 128 && "Not an extract from a wide vector");
#endif
SDValue Bitcast = DAG.getNode(ISD::BITCAST, SDLoc(N), MVT::v2i64,
N->getOperand(0));
return DAG.getNode(ISD::EXTRACT_SUBVECTOR, SDLoc(N), MVT::v1i64,
Bitcast, DAG.getConstant(1, MVT::i64));
}
return SDValue();
}
static SDValue tryExtendDUPToExtractHigh(SDValue N, SelectionDAG &DAG) {
bool IsDUPLANE;
switch (N.getOpcode()) {
case ARM64ISD::DUP:
IsDUPLANE = false;
break;
case ARM64ISD::DUPLANE8:
case ARM64ISD::DUPLANE16:
case ARM64ISD::DUPLANE32:
case ARM64ISD::DUPLANE64:
IsDUPLANE = true;
break;
default:
return SDValue();
}
MVT NarrowTy = N.getSimpleValueType();
if (!NarrowTy.is64BitVector())
return SDValue();
MVT ElementTy = NarrowTy.getVectorElementType();
unsigned NumElems = NarrowTy.getVectorNumElements();
MVT NewDUPVT = MVT::getVectorVT(ElementTy, NumElems * 2);
SDValue NewDUP;
if (IsDUPLANE)
NewDUP = DAG.getNode(N.getOpcode(), SDLoc(N), NewDUPVT, N.getOperand(0),
N.getOperand(1));
else
NewDUP = DAG.getNode(ARM64ISD::DUP, SDLoc(N),
NewDUPVT, N.getOperand(0));
return DAG.getNode(ISD::EXTRACT_SUBVECTOR,
SDLoc(N.getNode()), NarrowTy,
NewDUP, DAG.getConstant(NumElems, MVT::i64));
}
static bool isEssentiallyExtractSubvector(SDValue N) {
if (N.getOpcode() == ISD::EXTRACT_SUBVECTOR)
return true;
return N.getOpcode() == ISD::BITCAST &&
N.getOperand(0).getOpcode() == ISD::EXTRACT_SUBVECTOR;
}
struct GenericSetCCInfo {
const SDValue *Opnd0;
const SDValue *Opnd1;
ISD::CondCode CC;
};
struct ARM64SetCCInfo {
const SDValue *Cmp;
ARM64CC::CondCode CC;
};
union SetCCInfo {
GenericSetCCInfo Generic;
ARM64SetCCInfo ARM64;
};
struct SetCCInfoAndKind {
SetCCInfo Info;
bool IsARM64;
};
static bool isSetCC(SDValue Op, SetCCInfoAndKind &SetCCInfo) {
if (Op.getOpcode() == ISD::SETCC) {
SetCCInfo.Info.Generic.Opnd0 = &Op.getOperand(0);
SetCCInfo.Info.Generic.Opnd1 = &Op.getOperand(1);
SetCCInfo.Info.Generic.CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
SetCCInfo.IsARM64 = false;
return true;
}
if (Op.getOpcode() != ARM64ISD::CSEL)
return false;
SetCCInfo.Info.ARM64.Cmp = &Op.getOperand(3);
SetCCInfo.IsARM64 = true;
SetCCInfo.Info.ARM64.CC = static_cast<ARM64CC::CondCode>(
cast<ConstantSDNode>(Op.getOperand(2))->getZExtValue());
ConstantSDNode *TValue = dyn_cast<ConstantSDNode>(Op.getOperand(0));
ConstantSDNode *FValue = dyn_cast<ConstantSDNode>(Op.getOperand(1));
if (!TValue || !FValue)
return false;
if (!TValue->isOne()) {
std::swap(TValue, FValue);
SetCCInfo.Info.ARM64.CC =
ARM64CC::getInvertedCondCode(SetCCInfo.Info.ARM64.CC);
}
return TValue->isOne() && FValue->isNullValue();
}
static SDValue performSetccAddFolding(SDNode *Op, SelectionDAG &DAG) {
assert(Op && Op->getOpcode() == ISD::ADD && "Unexpected operation!");
SDValue LHS = Op->getOperand(0);
SDValue RHS = Op->getOperand(1);
SetCCInfoAndKind InfoAndKind;
if (!isSetCC(LHS, InfoAndKind)) {
std::swap(LHS, RHS);
if (!isSetCC(LHS, InfoAndKind))
return SDValue();
}
EVT CmpVT = InfoAndKind.IsARM64
? InfoAndKind.Info.ARM64.Cmp->getOperand(0).getValueType()
: InfoAndKind.Info.Generic.Opnd0->getValueType();
if (CmpVT != MVT::i32 && CmpVT != MVT::i64)
return SDValue();
SDValue CCVal;
SDValue Cmp;
SDLoc dl(Op);
if (InfoAndKind.IsARM64) {
CCVal = DAG.getConstant(
ARM64CC::getInvertedCondCode(InfoAndKind.Info.ARM64.CC), MVT::i32);
Cmp = *InfoAndKind.Info.ARM64.Cmp;
} else
Cmp = getARM64Cmp(*InfoAndKind.Info.Generic.Opnd0,
*InfoAndKind.Info.Generic.Opnd1,
ISD::getSetCCInverse(InfoAndKind.Info.Generic.CC, true),
CCVal, DAG, dl);
EVT VT = Op->getValueType(0);
LHS = DAG.getNode(ISD::ADD, dl, VT, RHS, DAG.getConstant(1, VT));
return DAG.getNode(ARM64ISD::CSEL, dl, VT, RHS, LHS, CCVal, Cmp);
}
static SDValue performAddSubLongCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
MVT VT = N->getSimpleValueType(0);
if (!VT.is128BitVector()) {
if (N->getOpcode() == ISD::ADD)
return performSetccAddFolding(N, DAG);
return SDValue();
}
SDValue LHS = N->getOperand(0);
SDValue RHS = N->getOperand(1);
if ((LHS.getOpcode() != ISD::ZERO_EXTEND &&
LHS.getOpcode() != ISD::SIGN_EXTEND) ||
LHS.getOpcode() != RHS.getOpcode())
return SDValue();
unsigned ExtType = LHS.getOpcode();
if (isEssentiallyExtractSubvector(LHS.getOperand(0))) {
RHS = tryExtendDUPToExtractHigh(RHS.getOperand(0), DAG);
if (!RHS.getNode())
return SDValue();
RHS = DAG.getNode(ExtType, SDLoc(N), VT, RHS);
} else if (isEssentiallyExtractSubvector(RHS.getOperand(0))) {
LHS = tryExtendDUPToExtractHigh(LHS.getOperand(0), DAG);
if (!LHS.getNode())
return SDValue();
LHS = DAG.getNode(ExtType, SDLoc(N), VT, LHS);
}
return DAG.getNode(N->getOpcode(), SDLoc(N), VT, LHS, RHS);
}
static SDValue tryCombineLongOpWithDup(unsigned IID, SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
if (DCI.isBeforeLegalizeOps())
return SDValue();
SDValue LHS = N->getOperand(1);
SDValue RHS = N->getOperand(2);
assert(N->getValueType(0).is128BitVector() &&
LHS.getValueType().is64BitVector() &&
RHS.getValueType().is64BitVector() &&
"unexpected shape for long operation");
if (isEssentiallyExtractSubvector(LHS)) {
RHS = tryExtendDUPToExtractHigh(RHS, DAG);
if (!RHS.getNode())
return SDValue();
} else if (isEssentiallyExtractSubvector(RHS)) {
LHS = tryExtendDUPToExtractHigh(LHS, DAG);
if (!LHS.getNode())
return SDValue();
}
return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, SDLoc(N), N->getValueType(0),
N->getOperand(0), LHS, RHS);
}
static SDValue tryCombineCRC32(unsigned Mask, SDNode *N,
SelectionDAG &DAG) {
SDValue AndN = N->getOperand(2);
if (AndN.getOpcode() != ISD::AND)
return SDValue();
ConstantSDNode *CMask = dyn_cast<ConstantSDNode>(AndN.getOperand(1));
if (!CMask || CMask->getZExtValue() != Mask)
return SDValue();
return DAG.getNode(ISD::INTRINSIC_WO_CHAIN, SDLoc(N), MVT::i32,
N->getOperand(0), N->getOperand(1), AndN.getOperand(0));
}
static SDValue performIntrinsicCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
const ARM64Subtarget *Subtarget) {
SelectionDAG &DAG = DCI.DAG;
unsigned IID = getIntrinsicID(N);
switch (IID) {
default: break;
case Intrinsic::arm64_neon_vcvtfxs2fp:
case Intrinsic::arm64_neon_vcvtfxu2fp:
return tryCombineFixedPointConvert(N, DCI, DAG);
break;
case Intrinsic::arm64_neon_smull:
case Intrinsic::arm64_neon_umull:
case Intrinsic::arm64_neon_sqdmull:
return tryCombineLongOpWithDup(IID, N, DCI, DAG);
case Intrinsic::arm64_neon_uabdl:
case Intrinsic::arm64_neon_sabdl:
case Intrinsic::arm64_neon_pmull:
return tryCombineLongOpWithDup(IID, N, DCI, DAG);
case Intrinsic::arm64_crc32b:
case Intrinsic::arm64_crc32cb:
return tryCombineCRC32(0xff, N, DAG);
case Intrinsic::arm64_crc32h:
case Intrinsic::arm64_crc32ch:
return tryCombineCRC32(0xffff, N, DAG);
}
return SDValue();
}
static SDValue performExtendCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
if (!DCI.isBeforeLegalizeOps())
return SDValue();
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
EVT ResVT = N->getValueType(0);
if (!ResVT.isVector() || TLI.isTypeLegal(ResVT))
return SDValue();
if (!ResVT.isSimple())
return SDValue();
SDValue Src = N->getOperand(0);
MVT SrcVT = Src->getValueType(0).getSimpleVT();
if (SrcVT.getSizeInBits() != 64)
return SDValue();
unsigned SrcEltSize = SrcVT.getVectorElementType().getSizeInBits();
unsigned ElementCount = SrcVT.getVectorNumElements();
SrcVT = MVT::getVectorVT(MVT::getIntegerVT(SrcEltSize * 2), ElementCount);
SDLoc DL(N);
Src = DAG.getNode(N->getOpcode(), DL, SrcVT, Src);
EVT LoVT, HiVT;
SDValue Lo, Hi;
unsigned NumElements = ResVT.getVectorNumElements();
assert(!(NumElements & 1) && "Splitting vector, but not in half!");
LoVT = HiVT = EVT::getVectorVT(*DAG.getContext(),
ResVT.getVectorElementType(), NumElements/2);
EVT InNVT = EVT::getVectorVT(*DAG.getContext(), SrcVT.getVectorElementType(),
LoVT.getVectorNumElements());
Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, InNVT, Src,
DAG.getIntPtrConstant(0));
Hi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, InNVT, Src,
DAG.getIntPtrConstant(InNVT.getVectorNumElements()));
Lo = DAG.getNode(N->getOpcode(), DL, LoVT, Lo);
Hi = DAG.getNode(N->getOpcode(), DL, HiVT, Hi);
return DAG.getNode(ISD::CONCAT_VECTORS, DL, ResVT, Lo, Hi);
}
static SDValue replaceSplatVectorStore(SelectionDAG &DAG, StoreSDNode *St) {
SDValue StVal = St->getValue();
EVT VT = StVal.getValueType();
if (VT.isFloatingPoint())
return SDValue();
if (StVal.getOpcode() != ISD::INSERT_VECTOR_ELT)
return SDValue();
unsigned NumVecElts = VT.getVectorNumElements();
if (NumVecElts != 4 && NumVecElts != 2)
return SDValue();
SDValue SplatVal = StVal.getOperand(1);
unsigned RemainInsertElts = NumVecElts - 1;
while (--RemainInsertElts) {
SDValue NextInsertElt = StVal.getOperand(0);
if (NextInsertElt.getOpcode() != ISD::INSERT_VECTOR_ELT)
return SDValue();
if (NextInsertElt.getOperand(1) != SplatVal)
return SDValue();
StVal = NextInsertElt;
}
unsigned OrigAlignment = St->getAlignment();
unsigned EltOffset = NumVecElts == 4 ? 4 : 8;
unsigned Alignment = std::min(OrigAlignment, EltOffset);
SDLoc DL(St);
SDValue BasePtr = St->getBasePtr();
SDValue NewST1 =
DAG.getStore(St->getChain(), DL, SplatVal, BasePtr, St->getPointerInfo(),
St->isVolatile(), St->isNonTemporal(), St->getAlignment());
unsigned Offset = EltOffset;
while (--NumVecElts) {
SDValue OffsetPtr = DAG.getNode(ISD::ADD, DL, MVT::i64, BasePtr,
DAG.getConstant(Offset, MVT::i64));
NewST1 = DAG.getStore(NewST1.getValue(0), DL, SplatVal, OffsetPtr,
St->getPointerInfo(), St->isVolatile(),
St->isNonTemporal(), Alignment);
Offset += EltOffset;
}
return NewST1;
}
static SDValue split16BStores(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG,
const ARM64Subtarget *Subtarget) {
if (!DCI.isBeforeLegalize())
return SDValue();
StoreSDNode *S = cast<StoreSDNode>(N);
if (S->isVolatile())
return SDValue();
if (!Subtarget->isCyclone())
return SDValue();
MachineFunction &MF = DAG.getMachineFunction();
bool IsMinSize = MF.getFunction()->getAttributes().
hasAttribute(AttributeSet::FunctionIndex, Attribute::MinSize);
if (IsMinSize)
return SDValue();
SDValue StVal = S->getValue();
EVT VT = StVal.getValueType();
if (!VT.isVector() || VT.getVectorNumElements() < 2 || VT == MVT::v2i64)
return SDValue();
if (VT.getSizeInBits() != 128 || S->getAlignment() >= 16 ||
S->getAlignment() <= 2)
return SDValue();
SDValue ReplacedSplat = replaceSplatVectorStore(DAG, S);
if (ReplacedSplat != SDValue())
return ReplacedSplat;
SDLoc DL(S);
unsigned NumElts = VT.getVectorNumElements()/2;
EVT HalfVT = EVT::getVectorVT(*DAG.getContext(), VT.getVectorElementType(),
NumElts);
SDValue SubVector0 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, HalfVT,
StVal, DAG.getIntPtrConstant(0));
SDValue SubVector1 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, HalfVT,
StVal, DAG.getIntPtrConstant(NumElts));
SDValue BasePtr = S->getBasePtr();
SDValue NewST1 = DAG.getStore(S->getChain(), DL, SubVector0, BasePtr,
S->getPointerInfo(), S->isVolatile(),
S->isNonTemporal(), S->getAlignment());
SDValue OffsetPtr = DAG.getNode(ISD::ADD, DL, MVT::i64, BasePtr,
DAG.getConstant(8, MVT::i64));
return DAG.getStore(NewST1.getValue(0), DL, SubVector1, OffsetPtr,
S->getPointerInfo(), S->isVolatile(),
S->isNonTemporal(), S->getAlignment());
}
static bool performTBISimplification(SDValue Addr,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
APInt DemandedMask = APInt::getLowBitsSet(64, 56);
APInt KnownZero, KnownOne;
TargetLowering::TargetLoweringOpt TLO(DAG, DCI.isBeforeLegalize(),
DCI.isBeforeLegalizeOps());
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
if (TLI.SimplifyDemandedBits(Addr, DemandedMask, KnownZero, KnownOne, TLO)) {
DCI.CommitTargetLoweringOpt(TLO);
return true;
}
return false;
}
static SDValue performSTORECombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG,
const ARM64Subtarget *Subtarget) {
SDValue Split = split16BStores(N, DCI, DAG, Subtarget);
if (Split.getNode())
return Split;
if (Subtarget->supportsAddressTopByteIgnored() &&
performTBISimplification(N->getOperand(2), DCI, DAG))
return SDValue(N, 0);
return SDValue();
}
static SDValue performBRCONDCombine(SDNode *N,
TargetLowering::DAGCombinerInfo &DCI,
SelectionDAG &DAG) {
SDValue Chain = N->getOperand(0);
SDValue Dest = N->getOperand(1);
SDValue CCVal = N->getOperand(2);
SDValue Cmp = N->getOperand(3);
assert(isa<ConstantSDNode>(CCVal) && "Expected a ConstantSDNode here!");
unsigned CC = cast<ConstantSDNode>(CCVal)->getZExtValue();
if (CC != ARM64CC::EQ && CC != ARM64CC::NE)
return SDValue();
unsigned CmpOpc = Cmp.getOpcode();
if (CmpOpc != ARM64ISD::ADDS && CmpOpc != ARM64ISD::SUBS)
return SDValue();
if (!Cmp->hasNUsesOfValue(0, 0) || !Cmp->hasNUsesOfValue(1, 1))
return SDValue();
SDValue LHS = Cmp.getOperand(0);
SDValue RHS = Cmp.getOperand(1);
assert(LHS.getValueType() == RHS.getValueType() &&
"Expected the value type to be the same for both operands!");
if (LHS.getValueType() != MVT::i32 && LHS.getValueType() != MVT::i64)
return SDValue();
if (isa<ConstantSDNode>(LHS) && cast<ConstantSDNode>(LHS)->isNullValue())
std::swap(LHS, RHS);
if (!isa<ConstantSDNode>(RHS) || !cast<ConstantSDNode>(RHS)->isNullValue())
return SDValue();
if (LHS.getOpcode() == ISD::SHL || LHS.getOpcode() == ISD::SRA ||
LHS.getOpcode() == ISD::SRL)
return SDValue();
SDValue BR;
if (CC == ARM64CC::EQ)
BR = DAG.getNode(ARM64ISD::CBZ, SDLoc(N), MVT::Other, Chain, LHS, Dest);
else
BR = DAG.getNode(ARM64ISD::CBNZ, SDLoc(N), MVT::Other, Chain, LHS, Dest);
DCI.CombineTo(N, BR, false);
return SDValue();
}
SDValue ARM64TargetLowering::PerformDAGCombine(SDNode *N,
DAGCombinerInfo &DCI) const {
SelectionDAG &DAG = DCI.DAG;
switch (N->getOpcode()) {
default: break;
case ISD::ADD:
case ISD::SUB:
return performAddSubLongCombine(N, DCI, DAG);
case ISD::XOR:
return performXorCombine(N, DAG, DCI, Subtarget);
case ISD::MUL:
return performMulCombine(N, DAG, DCI, Subtarget);
case ISD::SINT_TO_FP:
case ISD::UINT_TO_FP:
return performIntToFpCombine(N, DAG);
case ISD::OR:
return performORCombine(N, DCI, Subtarget);
case ISD::INTRINSIC_WO_CHAIN:
return performIntrinsicCombine(N, DCI, Subtarget);
case ISD::ANY_EXTEND:
case ISD::ZERO_EXTEND:
case ISD::SIGN_EXTEND:
return performExtendCombine(N, DCI, DAG);
case ISD::BITCAST:
return performBitcastCombine(N, DCI, DAG);
case ISD::CONCAT_VECTORS:
return performConcatVectorsCombine(N, DCI, DAG);
case ISD::LOAD:
if (performTBISimplification(N->getOperand(1), DCI, DAG))
return SDValue(N, 0);
break;
case ISD::STORE:
return performSTORECombine(N, DCI, DAG, Subtarget);
case ARM64ISD::BRCOND:
return performBRCONDCombine(N, DCI, DAG);
}
return SDValue();
}
bool ARM64TargetLowering::isUsedByReturnOnly(SDNode *N, SDValue &Chain) const {
if (N->getNumValues() != 1)
return false;
if (!N->hasNUsesOfValue(1, 0))
return false;
SDValue TCChain = Chain;
SDNode *Copy = *N->use_begin();
if (Copy->getOpcode() == ISD::CopyToReg) {
if (Copy->getOperand(Copy->getNumOperands()-1).getValueType() == MVT::Glue)
return false;
TCChain = Copy->getOperand(0);
} else if (Copy->getOpcode() != ISD::FP_EXTEND)
return false;
bool HasRet = false;
for (SDNode::use_iterator UI = Copy->use_begin(), UE = Copy->use_end();
UI != UE; ++UI) {
if (UI->getOpcode() != ARM64ISD::RET_FLAG)
return false;
HasRet = true;
}
if (!HasRet)
return false;
Chain = TCChain;
return true;
}
bool ARM64TargetLowering::mayBeEmittedAsTailCall(CallInst *CI) const {
if (!EnableARM64TailCalls)
return false;
if (!CI->isTailCall())
return false;
return true;
}
bool ARM64TargetLowering::getIndexedAddressParts(SDNode *Op,
SDValue &Base,
SDValue &Offset,
ISD::MemIndexedMode &AM,
bool &IsInc,
SelectionDAG &DAG) const {
if (Op->getOpcode() != ISD::ADD && Op->getOpcode() != ISD::SUB)
return false;
Base = Op->getOperand(0);
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(Op->getOperand(1))) {
int64_t RHSC = (int64_t)RHS->getZExtValue();
if (RHSC >= 256 || RHSC <= -256)
return false;
IsInc = (Op->getOpcode() == ISD::ADD);
Offset = Op->getOperand(1);
return true;
}
return false;
}
bool ARM64TargetLowering::getPreIndexedAddressParts(SDNode *N,
SDValue &Base,
SDValue &Offset,
ISD::MemIndexedMode &AM,
SelectionDAG &DAG) const {
EVT VT;
SDValue Ptr;
bool isSEXTLoad = false;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
VT = LD->getMemoryVT();
Ptr = LD->getBasePtr();
isSEXTLoad = LD->getExtensionType() == ISD::SEXTLOAD;
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
VT = ST->getMemoryVT();
Ptr = ST->getBasePtr();
} else
return false;
bool IsInc;
if (!getIndexedAddressParts(Ptr.getNode(), Base, Offset, AM, IsInc, DAG))
return false;
AM = IsInc ? ISD::PRE_INC : ISD::PRE_DEC;
return true;
}
bool ARM64TargetLowering::getPostIndexedAddressParts(SDNode *N, SDNode *Op,
SDValue &Base,
SDValue &Offset,
ISD::MemIndexedMode &AM,
SelectionDAG &DAG) const {
EVT VT;
SDValue Ptr;
bool isSEXTLoad = false;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
VT = LD->getMemoryVT();
Ptr = LD->getBasePtr();
isSEXTLoad = LD->getExtensionType() == ISD::SEXTLOAD;
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
VT = ST->getMemoryVT();
Ptr = ST->getBasePtr();
} else
return false;
bool IsInc;
if (!getIndexedAddressParts(Op, Base, Offset, AM, IsInc, DAG))
return false;
if (Ptr != Base)
return false;
AM = IsInc ? ISD::POST_INC : ISD::POST_DEC;
return true;
}
static void ReplaceATOMIC_LOAD_128(SDNode *N, SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) {
SDLoc DL(N);
AtomicSDNode *AN = cast<AtomicSDNode>(N);
EVT VT = AN->getMemoryVT();
SDValue Zero = DAG.getConstant(0, VT);
SDValue Result = DAG.getAtomic(ISD::ATOMIC_LOAD_OR, DL, AN->getMemoryVT(),
N->getOperand(0), N->getOperand(1), Zero,
AN->getMemOperand(), AN->getOrdering(),
AN->getSynchScope());
Results.push_back(Result.getValue(0)); Results.push_back(Result.getValue(1)); }
static void ReplaceATOMIC_OP_128(SDNode *N, SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG, unsigned NewOp) {
SDLoc DL(N);
AtomicOrdering Ordering = cast<AtomicSDNode>(N)->getOrdering();
assert (N->getValueType(0) == MVT::i128 &&
"Only know how to expand i128 atomics");
SmallVector<SDValue, 6> Ops;
Ops.push_back(N->getOperand(1)); Ops.push_back(DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i64,
N->getOperand(2), DAG.getIntPtrConstant(0)));
Ops.push_back(DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i64,
N->getOperand(2), DAG.getIntPtrConstant(1)));
if (NewOp == ARM64::ATOMIC_CMP_SWAP_I128) {
Ops.push_back(DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i64,
N->getOperand(3), DAG.getIntPtrConstant(0)));
Ops.push_back(DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i64,
N->getOperand(3), DAG.getIntPtrConstant(1)));
}
Ops.push_back(DAG.getTargetConstant(Ordering, MVT::i32));
Ops.push_back(N->getOperand(0));
SDVTList Tys = DAG.getVTList(MVT::i64, MVT::i64, MVT::Other);
SDNode *Result = DAG.getMachineNode(NewOp, DL, Tys, Ops);
SDValue OpsF[] = { SDValue(Result, 0), SDValue(Result, 1) };
Results.push_back(DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i128, OpsF, 2));
Results.push_back(SDValue(Result, 2));
}
void ARM64TargetLowering::ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const {
switch (N->getOpcode()) {
default:
llvm_unreachable("Don't know how to custom expand this");
case ISD::ATOMIC_LOAD:
ReplaceATOMIC_LOAD_128(N, Results, DAG);
return;
case ISD::ATOMIC_LOAD_ADD:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_ADD_I128);
return;
case ISD::ATOMIC_LOAD_SUB:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_SUB_I128);
return;
case ISD::ATOMIC_LOAD_AND:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_AND_I128);
return;
case ISD::ATOMIC_LOAD_OR:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_OR_I128);
return;
case ISD::ATOMIC_LOAD_XOR:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_XOR_I128);
return;
case ISD::ATOMIC_LOAD_NAND:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_NAND_I128);
return;
case ISD::ATOMIC_SWAP:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_SWAP_I128);
return;
case ISD::ATOMIC_LOAD_MIN:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_MIN_I128);
return;
case ISD::ATOMIC_LOAD_MAX:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_MAX_I128);
return;
case ISD::ATOMIC_LOAD_UMIN:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_UMIN_I128);
return;
case ISD::ATOMIC_LOAD_UMAX:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_LOAD_UMAX_I128);
return;
case ISD::ATOMIC_CMP_SWAP:
ReplaceATOMIC_OP_128(N, Results, DAG, ARM64::ATOMIC_CMP_SWAP_I128);
return;
case ISD::FP_TO_UINT:
case ISD::FP_TO_SINT:
assert(N->getValueType(0) == MVT::i128 && "unexpected illegal conversion");
return;
}
}