static std::string computeDataLayout(const Triple &TT) {
// X86 is little endian
std::string Ret = "e";
Ret += DataLayout::getManglingComponent(TT);
// X86 and x32 have 32 bit pointers.
if ((TT.isArch64Bit() &&
(TT.getEnvironment() == Triple::GNUX32 || TT.isOSNaCl())) ||
!TT.isArch64Bit())
Ret += "-p:32:32";
// Some ABIs align 64 bit integers and doubles to 64 bits, others to 32.
if (TT.isArch64Bit() || TT.isOSWindows() || TT.isOSNaCl())
Ret += "-i64:64";
else if (TT.isOSIAMCU())
Ret += "-i64:32-f64:32";
else
Ret += "-f64:32:64";
// Some ABIs align long double to 128 bits, others to 32.
if (TT.isOSNaCl() || TT.isOSIAMCU())
; // No f80
else if (TT.isArch64Bit() || TT.isOSDarwin())
Ret += "-f80:128";
else
Ret += "-f80:32";
if (TT.isOSIAMCU())
Ret += "-f128:32";
// The registers can hold 8, 16, 32 or, in x86-64, 64 bits.
if (TT.isArch64Bit())
Ret += "-n8:16:32:64";
else
Ret += "-n8:16:32";
// The stack is aligned to 32 bits on some ABIs and 128 bits on others.
if ((!TT.isArch64Bit() && TT.isOSWindows()) || TT.isOSIAMCU())
Ret += "-a:0:32-S32";
else
Ret += "-S128";
return Ret;
}
static std::unique_ptr<TargetLoweringObjectFile> createTLOF(const Triple &TT) {
if (TT.isOSBinFormatMachO()) {
if (TT.getArch() == Triple::x86_64)
return llvm::make_unique<X86_64MachoTargetObjectFile>();
return llvm::make_unique<TargetLoweringObjectFileMachO>();
}
if (TT.isOSFreeBSD())
return llvm::make_unique<X86FreeBSDTargetObjectFile>();
if (TT.isOSLinux() || TT.isOSNaCl() || TT.isOSIAMCU())
return llvm::make_unique<X86LinuxNaClTargetObjectFile>();
if (TT.isOSFuchsia())
return llvm::make_unique<X86FuchsiaTargetObjectFile>();
if (TT.isOSBinFormatELF())
return llvm::make_unique<X86ELFTargetObjectFile>();
if (TT.isKnownWindowsMSVCEnvironment() || TT.isWindowsCoreCLREnvironment())
return llvm::make_unique<X86WindowsTargetObjectFile>();
if (TT.isOSBinFormatCOFF())
return llvm::make_unique<TargetLoweringObjectFileCOFF>();
llvm_unreachable("unknown subtarget type");
}