#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"
using namespace llvm;
-static const MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
+static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
Triple TheTriple(TT);
switch (TheTriple.getOS()) {
case Triple::Darwin:
case Triple::MinGW32:
case Triple::MinGW64:
case Triple::Cygwin:
- return new X86MCAsmInfoCOFF(TheTriple);
case Triple::Win32:
- return new X86WinMCAsmInfo(TheTriple);
+ return new X86MCAsmInfoCOFF(TheTriple);
default:
return new X86ELFMCAsmInfo(TheTriple);
}
}
+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);
RegisterAsmInfoFn B(TheX86_64Target, createMCAsmInfo);
// Register the code emitter.
- TargetRegistry::RegisterCodeEmitter(TheX86_32Target, createX86MCCodeEmitter);
- TargetRegistry::RegisterCodeEmitter(TheX86_64Target, createX86MCCodeEmitter);
+ TargetRegistry::RegisterCodeEmitter(TheX86_32Target,
+ createX86_32MCCodeEmitter);
+ TargetRegistry::RegisterCodeEmitter(TheX86_64Target,
+ createX86_64MCCodeEmitter);
+
+ // Register the asm backend.
+ TargetRegistry::RegisterAsmBackend(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));
- // If we're using Fast-ISel, clean up the mess.
- if (EnableFastISel)
- PM.add(createDeadMachineInstructionElimPass());
-
- // 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) {
- // Calculate and set max stack object alignment early, so we can decide
- // whether we will need stack realignment (and thus FP).
- PM.add(createMaxStackAlignmentCalculatorPass());
+ PM.add(createX86MaxStackAlignmentHeuristicPass());
return false; // -print-machineinstr shouldn't print after this.
}
return true; // -print-machineinstr should print after this.
}
-bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- MachineCodeEmitter &MCE) {
- // FIXME: Move this to TargetJITInfo!
- // On Darwin, do not override 64-bit setting made in X86TargetMachine().
- if (DefRelocModel == Reloc::Default &&
- (!Subtarget.isTargetDarwin() || !Subtarget.is64Bit())) {
- setRelocationModel(Reloc::Static);
- Subtarget.setPICStyle(PICStyles::None);
+bool X86TargetMachine::addPreEmitPass(PassManagerBase &PM,
+ CodeGenOpt::Level OptLevel) {
+ if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2()) {
+ PM.add(createSSEDomainFixPass());
+ return true;
}
-
- PM.add(createX86CodeEmitterPass(*this, MCE));
-
return false;
}
return false;
}
-bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- ObjectCodeEmitter &OCE) {
- PM.add(createX86ObjectCodeEmitterPass(*this, OCE));
- return false;
-}
-
-bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- MachineCodeEmitter &MCE) {
- PM.add(createX86CodeEmitterPass(*this, MCE));
- return false;
-}
-
-bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- JITCodeEmitter &JCE) {
- PM.add(createX86JITCodeEmitterPass(*this, JCE));
- return false;
-}
-
-bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- ObjectCodeEmitter &OCE) {
- PM.add(createX86ObjectCodeEmitterPass(*this, OCE));
- return false;
-}
-
void X86TargetMachine::setCodeModelForStatic() {
if (getCodeModel() != CodeModel::Default) return;
else
setCodeModel(CodeModel::Small);
}
-
-/// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are 4-byte,
-/// 8-byte, and target default. The CIE is hard-coded to indicate that the LSDA
-/// pointer in the FDE section is an "sdata4", and should be encoded as a 4-byte
-/// pointer by default. However, some systems may require a different size due
-/// to bugs or other conditions. We will default to a 4-byte encoding unless the
-/// system tells us otherwise.
-///
-/// The issue is when the CIE says their is an LSDA. That mandates that every
-/// FDE have an LSDA slot. But if the function does not need an LSDA. There
-/// needs to be some way to signify there is none. The LSDA is encoded as
-/// pc-rel. But you don't look for some magic value after adding the pc. You
-/// have to look for a zero before adding the pc. The problem is that the size
-/// of the zero to look for depends on the encoding. The unwinder bug in SL is
-/// that it always checks for a pointer-size zero. So on x86_64 it looks for 8
-/// bytes of zero. If you have an LSDA, it works fine since the 8-bytes are
-/// non-zero so it goes ahead and then reads the value based on the encoding.
-/// But if you use sdata4 and there is no LSDA, then the test for zero gives a
-/// false negative and the unwinder thinks there is an LSDA.
-///
-/// FIXME: This call-back isn't good! We should be using the correct encoding
-/// regardless of the system. However, there are some systems which have bugs
-/// that prevent this from occuring.
-DwarfLSDAEncoding::Encoding X86TargetMachine::getLSDAEncoding() const {
- if (Subtarget.isTargetDarwin() && Subtarget.getDarwinVers() != 10)
- return DwarfLSDAEncoding::Default;
-
- return DwarfLSDAEncoding::EightByte;
-}
projects / oota-llvm.git / blobdiff