#ifndef ARMCALLINGCONV_H
#define ARMCALLINGCONV_H
#include "llvm/CallingConv.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "ARMBaseInstrInfo.h"
#include "ARMRegisterInfo.h"
#include "ARMSubtarget.h"
#include "ARM.h"
namespace llvm {
static bool f64AssignAPCS(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
CCState &State, bool CanFail) {
static const unsigned RegList[] = { ARM::R0, ARM::R1, ARM::R2, ARM::R3 };
if (unsigned Reg = State.AllocateReg(RegList, 4))
State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
else {
if (CanFail)
return false;
State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
State.AllocateStack(8, 4),
LocVT, LocInfo));
return true;
}
if (unsigned Reg = State.AllocateReg(RegList, 4))
State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
else
State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
State.AllocateStack(4, 4),
LocVT, LocInfo));
return true;
}
static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
CCState &State) {
if (!f64AssignAPCS(ValNo, ValVT, LocVT, LocInfo, State, true))
return false;
if (LocVT == MVT::v2f64 &&
!f64AssignAPCS(ValNo, ValVT, LocVT, LocInfo, State, false))
return false;
return true; }
static bool f64AssignAAPCS(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
CCState &State, bool CanFail) {
static const unsigned HiRegList[] = { ARM::R0, ARM::R2 };
static const unsigned LoRegList[] = { ARM::R1, ARM::R3 };
static const unsigned ShadowRegList[] = { ARM::R0, ARM::R1 };
unsigned Reg = State.AllocateReg(HiRegList, ShadowRegList, 2);
if (Reg == 0) {
if (CanFail)
return false;
State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
State.AllocateStack(8, 8),
LocVT, LocInfo));
return true;
}
unsigned i;
for (i = 0; i < 2; ++i)
if (HiRegList[i] == Reg)
break;
unsigned T = State.AllocateReg(LoRegList[i]);
(void)T;
assert(T == LoRegList[i] && "Could not allocate register");
State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, LoRegList[i],
LocVT, LocInfo));
return true;
}
static bool CC_ARM_AAPCS_Custom_f64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
CCState &State) {
if (!f64AssignAAPCS(ValNo, ValVT, LocVT, LocInfo, State, true))
return false;
if (LocVT == MVT::v2f64 &&
!f64AssignAAPCS(ValNo, ValVT, LocVT, LocInfo, State, false))
return false;
return true; }
static bool f64RetAssign(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo, CCState &State) {
static const unsigned HiRegList[] = { ARM::R0, ARM::R2 };
static const unsigned LoRegList[] = { ARM::R1, ARM::R3 };
unsigned Reg = State.AllocateReg(HiRegList, LoRegList, 2);
if (Reg == 0)
return false;
unsigned i;
for (i = 0; i < 2; ++i)
if (HiRegList[i] == Reg)
break;
State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, LoRegList[i],
LocVT, LocInfo));
return true;
}
static bool RetCC_ARM_APCS_Custom_f64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
CCState &State) {
if (!f64RetAssign(ValNo, ValVT, LocVT, LocInfo, State))
return false;
if (LocVT == MVT::v2f64 && !f64RetAssign(ValNo, ValVT, LocVT, LocInfo, State))
return false;
return true; }
static bool RetCC_ARM_AAPCS_Custom_f64(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags,
CCState &State) {
return RetCC_ARM_APCS_Custom_f64(ValNo, ValVT, LocVT, LocInfo, ArgFlags,
State);
}
}
#endif