#include "PPCSubtarget.h"
#include "PPC.h"
#include "llvm/GlobalValue.h"
#include "llvm/Target/TargetMachine.h"
#include "PPCGenSubtarget.inc"
#include <cstdlib>
using namespace llvm;
#if defined(__APPLE__)
#include <mach/mach.h>
#include <mach/mach_host.h>
#include <mach/host_info.h>
#include <mach/machine.h>
static const char *GetCurrentPowerPCCPU() {
host_basic_info_data_t hostInfo;
mach_msg_type_number_t infoCount;
infoCount = HOST_BASIC_INFO_COUNT;
host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo,
&infoCount);
if (hostInfo.cpu_type != CPU_TYPE_POWERPC) return "generic";
switch(hostInfo.cpu_subtype) {
case CPU_SUBTYPE_POWERPC_601: return "601";
case CPU_SUBTYPE_POWERPC_602: return "602";
case CPU_SUBTYPE_POWERPC_603: return "603";
case CPU_SUBTYPE_POWERPC_603e: return "603e";
case CPU_SUBTYPE_POWERPC_603ev: return "603ev";
case CPU_SUBTYPE_POWERPC_604: return "604";
case CPU_SUBTYPE_POWERPC_604e: return "604e";
case CPU_SUBTYPE_POWERPC_620: return "620";
case CPU_SUBTYPE_POWERPC_750: return "750";
case CPU_SUBTYPE_POWERPC_7400: return "7400";
case CPU_SUBTYPE_POWERPC_7450: return "7450";
case CPU_SUBTYPE_POWERPC_970: return "970";
default: ;
}
return "generic";
}
#endif
PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &FS,
bool is64Bit)
: StackAlignment(16)
, DarwinDirective(PPC::DIR_NONE)
, IsGigaProcessor(false)
, Has64BitSupport(false)
, Use64BitRegs(false)
, IsPPC64(is64Bit)
, HasAltivec(false)
, HasFSQRT(false)
, HasSTFIWX(false)
, HasLazyResolverStubs(false)
, IsJITCodeModel(false)
, TargetTriple(TT) {
std::string CPU = "generic";
#if defined(__APPLE__)
CPU = GetCurrentPowerPCCPU();
#endif
ParseSubtargetFeatures(FS, CPU);
if (is64Bit) {
Has64BitSupport = true;
Use64BitRegs = true;
}
if (use64BitRegs() && !has64BitSupport())
Use64BitRegs = false;
if (isDarwin())
HasLazyResolverStubs = true;
}
void PPCSubtarget::SetJITMode() {
HasLazyResolverStubs = false;
IsJITCodeModel = true;
}
bool PPCSubtarget::hasLazyResolverStub(const GlobalValue *GV,
const TargetMachine &TM) const {
if (!HasLazyResolverStubs || TM.getRelocationModel() == Reloc::Static)
return false;
bool isDecl = GV->isDeclaration() && !GV->isMaterializable();
if (GV->hasHiddenVisibility() && !isDecl && !GV->hasCommonLinkage())
return false;
return GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
GV->hasCommonLinkage() || isDecl;
}