X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
bool is64Bit = T.getArch() == Triple::x86_64;
bool isX32 = T.getEnvironment() == Triple::GNUX32;
// For ELF, x86-64 pointer size depends on the ABI.
// For x86-64 without the x32 ABI, pointer size is 8. For x86 and for x86-64
// with the x32 ABI, pointer size remains the default 4.
PointerSize = (is64Bit && !isX32) ? 8 : 4;
// OTOH, stack slot size is always 8 for x86-64, even with the x32 ABI.
CalleeSaveStackSlotSize = is64Bit ? 8 : 4;
AssemblerDialect = AsmWriterFlavor;
TextAlignFillValue = 0x90;
// Debug Information
SupportsDebugInformation = true;
// Exceptions handling
ExceptionsType = ExceptionHandling::DwarfCFI;
// OpenBSD and Bitrig have buggy support for .quad in 32-bit mode, just split
// into two .words.
if ((T.isOSOpenBSD() || T.isOSBitrig()) && T.getArch() == Triple::x86)
Data64bitsDirective = nullptr;
// Always enable the integrated assembler by default.
// Clang also enabled it when the OS is Solaris but that is redundant here.
UseIntegratedAssembler = true;
}
