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Migrate the X86 AsmPrinter away from using the subtarget when 

dealing with module level emission. Currently this is using
the Triple to determine, but eventually the logic should
probably migrate to TLOF.

llvm-svn: 228332
This commit is contained in:
Eric Christopher 2015-02-05 19:06:45 +00:00
parent 9be0b77f3f
commit d7dec666cc
2 changed files with 20 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
llvm/lib/Target/X86/X86AsmPrinter.cpp
View File

@ -47,6 +47,8 @@ using namespace llvm;
/// runOnMachineFunction - Emit the function body.
///
bool X86AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
Subtarget = &MF.getSubtarget<X86Subtarget>();
SMShadowTracker.startFunction(MF);
SetupMachineFunction(MF);
@ -505,13 +507,15 @@ bool X86AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
}
void X86AsmPrinter::EmitStartOfAsmFile(Module &M) {
if (Subtarget->isTargetMachO())
Triple TT(TM.getTargetTriple());
if (TT.isOSBinFormatMachO())
OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
if (Subtarget->isTargetCOFF()) {
if (TT.isOSBinFormatCOFF()) {
// Emit an absolute @feat.00 symbol. This appears to be some kind of
// compiler features bitfield read by link.exe.
if (!Subtarget->is64Bit()) {
if (TT.getArch() == Triple::x86) {
MCSymbol *S = MMI->getContext().GetOrCreateSymbol(StringRef("@feat.00"));
OutStreamer.BeginCOFFSymbolDef(S);
OutStreamer.EmitCOFFSymbolStorageClass(COFF::IMAGE_SYM_CLASS_STATIC);
@ -578,20 +582,21 @@ void X86AsmPrinter::GenerateExportDirective(const MCSymbol *Sym, bool IsData) {
SmallString<128> Directive;
raw_svector_ostream OS(Directive);
StringRef Name = Sym->getName();
Triple TT(TM.getTargetTriple());
if (Subtarget->isTargetKnownWindowsMSVC())
if (TT.isKnownWindowsMSVCEnvironment())
OS << " /EXPORT:";
else
OS << " -export:";
if ((Subtarget->isTargetWindowsGNU() || Subtarget->isTargetWindowsCygwin()) &&
if ((TT.isWindowsGNUEnvironment() || TT.isWindowsCygwinEnvironment()) &&
(Name[0] == getDataLayout().getGlobalPrefix()))
Name = Name.drop_front();
OS << Name;
if (IsData) {
if (Subtarget->isTargetKnownWindowsMSVC())
if (TT.isKnownWindowsMSVCEnvironment())
OS << ",DATA";
else
OS << ",data";
@ -602,7 +607,9 @@ void X86AsmPrinter::GenerateExportDirective(const MCSymbol *Sym, bool IsData) {
}
void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
if (Subtarget->isTargetMachO()) {
Triple TT(TM.getTargetTriple());
if (TT.isOSBinFormatMachO()) {
// All darwin targets use mach-o.
MachineModuleInfoMachO &MMIMacho =
MMI->getObjFileInfo<MachineModuleInfoMachO>();
@ -676,13 +683,14 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
OutStreamer.EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
}
if (Subtarget->isTargetKnownWindowsMSVC() && MMI->usesVAFloatArgument()) {
StringRef SymbolName = Subtarget->is64Bit() ? "_fltused" : "__fltused";
if (TT.isKnownWindowsMSVCEnvironment() && MMI->usesVAFloatArgument()) {
StringRef SymbolName =
(TT.getArch() == Triple::x86_64) ? "_fltused" : "__fltused";
MCSymbol *S = MMI->getContext().GetOrCreateSymbol(SymbolName);
OutStreamer.EmitSymbolAttribute(S, MCSA_Global);
}
if (Subtarget->isTargetCOFF()) {
if (TT.isOSBinFormatCOFF()) {
// Necessary for dllexport support
std::vector<const MCSymbol*> DLLExportedFns, DLLExportedGlobals;
@ -718,7 +726,7 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
}
}
if (Subtarget->isTargetELF()) {
if (TT.isOSBinFormatELF()) {
const TargetLoweringObjectFileELF &TLOFELF =
static_cast<const TargetLoweringObjectFileELF &>(getObjFileLowering());

4
llvm/lib/Target/X86/X86AsmPrinter.h
View File

@ -87,9 +87,7 @@ class LLVM_LIBRARY_VISIBILITY X86AsmPrinter : public AsmPrinter {
public:
explicit X86AsmPrinter(TargetMachine &TM,
std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)), SM(*this), SMShadowTracker(TM) {
Subtarget = &TM.getSubtarget<X86Subtarget>();
}
: AsmPrinter(TM, std::move(Streamer)), SM(*this), SMShadowTracker(TM) {}
const char *getPassName() const override {
return "X86 Assembly / Object Emitter";