#include "llvm/PassManager.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegistry.h"
}
}
+static MCStreamer *createMCStreamer(const Target &T, const std::string &TT,
+ MCContext &Ctx, TargetAsmBackend &TAB,
+ raw_ostream &_OS,
+ MCCodeEmitter *_Emitter,
+ bool RelaxAll) {
+ Triple TheTriple(TT);
+ switch (TheTriple.getOS()) {
+ case Triple::Darwin:
+ return createMachOStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
+ case Triple::MinGW32:
+ case Triple::MinGW64:
+ case Triple::Cygwin:
+ case Triple::Win32:
+ return createWinCOFFStreamer(Ctx, TAB, *_Emitter, _OS, RelaxAll);
+ default:
+ return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
+ }
+}
+
extern "C" void LLVMInitializeX86Target() {
// Register the target.
RegisterTargetMachine<X86_32TargetMachine> X(TheX86_32Target);
createX86_32AsmBackend);
TargetRegistry::RegisterAsmBackend(TheX86_64Target,
createX86_64AsmBackend);
+
+ // Register the object streamer.
+ TargetRegistry::RegisterObjectStreamer(TheX86_32Target,
+ createMCStreamer);
+ TargetRegistry::RegisterObjectStreamer(TheX86_64Target,
+ createMCStreamer);
}
X86_32TargetMachine::X86_32TargetMachine(const Target &T, const std::string &TT,
const std::string &FS)
- : X86TargetMachine(T, TT, FS, false) {
+ : X86TargetMachine(T, TT, FS, false),
+ DataLayout(getSubtargetImpl()->isTargetDarwin() ?
+ "e-p:32:32-f64:32:64-i64:32:64-f80:128:128-n8:16:32" :
+ (getSubtargetImpl()->isTargetCygMing() ||
+ getSubtargetImpl()->isTargetWindows()) ?
+ "e-p:32:32-f64:64:64-i64:64:64-f80:32:32-n8:16:32" :
+ "e-p:32:32-f64:32:64-i64:32:64-f80:32:32-n8:16:32"),
+ InstrInfo(*this),
+ TSInfo(*this),
+ TLInfo(*this),
+ JITInfo(*this) {
}
X86_64TargetMachine::X86_64TargetMachine(const Target &T, const std::string &TT,
const std::string &FS)
- : X86TargetMachine(T, TT, FS, true) {
+ : X86TargetMachine(T, TT, FS, true),
+ DataLayout("e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128-n8:16:32:64"),
+ InstrInfo(*this),
+ TSInfo(*this),
+ TLInfo(*this),
+ JITInfo(*this) {
}
/// X86TargetMachine ctor - Create an X86 target.
const std::string &FS, bool is64Bit)
: LLVMTargetMachine(T, TT),
Subtarget(TT, FS, is64Bit),
- DataLayout(Subtarget.getDataLayout()),
- FrameInfo(TargetFrameInfo::StackGrowsDown,
- Subtarget.getStackAlignment(),
- (Subtarget.isTargetWin64() ? -40 :
- (Subtarget.is64Bit() ? -8 : -4))),
- InstrInfo(*this), JITInfo(*this), TLInfo(*this), ELFWriterInfo(*this) {
+ FrameInfo(Subtarget),
+ ELFWriterInfo(is64Bit, true) {
DefRelocModel = getRelocationModel();
-
+
// If no relocation model was picked, default as appropriate for the target.
if (getRelocationModel() == Reloc::Default) {
- if (!Subtarget.isTargetDarwin())
- setRelocationModel(Reloc::Static);
- else if (Subtarget.is64Bit())
+ // Darwin defaults to PIC in 64 bit mode and dynamic-no-pic in 32 bit mode.
+ // Win64 requires rip-rel addressing, thus we force it to PIC. Otherwise we
+ // use static relocation model by default.
+ if (Subtarget.isTargetDarwin()) {
+ if (Subtarget.is64Bit())
+ setRelocationModel(Reloc::PIC_);
+ else
+ setRelocationModel(Reloc::DynamicNoPIC);
+ } else if (Subtarget.isTargetWin64())
setRelocationModel(Reloc::PIC_);
else
- setRelocationModel(Reloc::DynamicNoPIC);
+ setRelocationModel(Reloc::Static);
}
assert(getRelocationModel() != Reloc::Default &&
Subtarget.isTargetDarwin() &&
is64Bit)
setRelocationModel(Reloc::PIC_);
-
+
// Determine the PICStyle based on the target selected.
if (getRelocationModel() == Reloc::Static) {
// Unless we're in PIC or DynamicNoPIC mode, set the PIC style to None.
Subtarget.setPICStyle(PICStyles::None);
+ } else if (Subtarget.is64Bit()) {
+ // PIC in 64 bit mode is always rip-rel.
+ Subtarget.setPICStyle(PICStyles::RIPRel);
} else if (Subtarget.isTargetCygMing()) {
Subtarget.setPICStyle(PICStyles::None);
} else if (Subtarget.isTargetDarwin()) {
- if (Subtarget.is64Bit())
- Subtarget.setPICStyle(PICStyles::RIPRel);
- else if (getRelocationModel() == Reloc::PIC_)
+ if (getRelocationModel() == Reloc::PIC_)
Subtarget.setPICStyle(PICStyles::StubPIC);
else {
assert(getRelocationModel() == Reloc::DynamicNoPIC);
Subtarget.setPICStyle(PICStyles::StubDynamicNoPIC);
}
} else if (Subtarget.isTargetELF()) {
- if (Subtarget.is64Bit())
- Subtarget.setPICStyle(PICStyles::RIPRel);
- else
- Subtarget.setPICStyle(PICStyles::GOT);
+ Subtarget.setPICStyle(PICStyles::GOT);
}
-
+
// Finally, if we have "none" as our PIC style, force to static mode.
if (Subtarget.getPICStyle() == PICStyles::None)
setRelocationModel(Reloc::Static);
// Install an instruction selector.
PM.add(createX86ISelDag(*this, OptLevel));
- // Install a pass to insert x87 FP_REG_KILL instructions, as needed.
- PM.add(createX87FPRegKillInserterPass());
+ // For 32-bit, prepend instructions to set the "global base reg" for PIC.
+ if (!Subtarget.is64Bit())
+ PM.add(createGlobalBaseRegPass());
return false;
}
bool X86TargetMachine::addPreRegAlloc(PassManagerBase &PM,
CodeGenOpt::Level OptLevel) {
+ PM.add(createX86MaxStackAlignmentHeuristicPass());
return false; // -print-machineinstr shouldn't print after this.
}
return true; // -print-machineinstr should print after this.
}
+bool X86TargetMachine::addPreEmitPass(PassManagerBase &PM,
+ CodeGenOpt::Level OptLevel) {
+ if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2()) {
+ PM.add(createSSEDomainFixPass());
+ return true;
+ }
+ return false;
+}
+
bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
JITCodeEmitter &JCE) {
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