//
//===----------------------------------------------------------------------===//
-#include "X86MCAsmInfo.h"
#include "X86TargetMachine.h"
#include "X86.h"
#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/CommandLine.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
-static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
- Triple TheTriple(TT);
- switch (TheTriple.getOS()) {
- case Triple::Darwin:
- return new X86MCAsmInfoDarwin(TheTriple);
- case Triple::MinGW32:
- case Triple::Cygwin:
- case Triple::Win32:
- if (TheTriple.getEnvironment() == Triple::MachO)
- return new X86MCAsmInfoDarwin(TheTriple);
- else
- 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,
- bool NoExecStack) {
- Triple TheTriple(TT);
- switch (TheTriple.getOS()) {
- case Triple::Darwin:
- return createMachOStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
- case Triple::MinGW32:
- case Triple::Cygwin:
- case Triple::Win32:
- if (TheTriple.getEnvironment() == Triple::MachO)
- return createMachOStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
- else
- return createWinCOFFStreamer(Ctx, TAB, *_Emitter, _OS, RelaxAll);
- default:
- return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll, NoExecStack);
- }
-}
-
extern "C" void LLVMInitializeX86Target() {
// Register the target.
RegisterTargetMachine<X86_32TargetMachine> X(TheX86_32Target);
RegisterTargetMachine<X86_64TargetMachine> Y(TheX86_64Target);
-
- // Register the target asm info.
- RegisterAsmInfoFn A(TheX86_32Target, createMCAsmInfo);
- RegisterAsmInfoFn B(TheX86_64Target, createMCAsmInfo);
-
- // Register the code emitter.
- 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),
+X86_32TargetMachine::X86_32TargetMachine(const Target &T, StringRef TT,
+ StringRef CPU, StringRef FS,
+ Reloc::Model RM, CodeModel::Model CM)
+ : X86TargetMachine(T, TT, CPU, FS, RM, CM, false),
DataLayout(getSubtargetImpl()->isTargetDarwin() ?
- "e-p:32:32-f64:32:64-i64:32:64-f80:128:128-f128:128:128-n8:16:32" :
+ "e-p:32:32-f64:32:64-i64:32:64-f80:128:128-f128:128:128-"
+ "n8:16:32-S128" :
(getSubtargetImpl()->isTargetCygMing() ||
getSubtargetImpl()->isTargetWindows()) ?
- "e-p:32:32-f64:64:64-i64:64:64-f80:32:32-f128:128:128-n8:16:32" :
- "e-p:32:32-f64:32:64-i64:32:64-f80:32:32-f128:128:128-n8:16:32"),
+ "e-p:32:32-f64:64:64-i64:64:64-f80:32:32-f128:128:128-"
+ "n8:16:32-S32" :
+ "e-p:32:32-f64:32:64-i64:32:64-f80:32:32-f128:128:128-"
+ "n8:16:32-S128"),
InstrInfo(*this),
TSInfo(*this),
TLInfo(*this),
}
-X86_64TargetMachine::X86_64TargetMachine(const Target &T, const std::string &TT,
- const std::string &FS)
- : X86TargetMachine(T, TT, FS, true),
- DataLayout("e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128-f128:128:128-n8:16:32:64"),
+X86_64TargetMachine::X86_64TargetMachine(const Target &T, StringRef TT,
+ StringRef CPU, StringRef FS,
+ Reloc::Model RM, CodeModel::Model CM)
+ : X86TargetMachine(T, TT, CPU, FS, RM, CM, true),
+ DataLayout("e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128-f128:128:128-"
+ "n8:16:32:64-S128"),
InstrInfo(*this),
TSInfo(*this),
TLInfo(*this),
/// X86TargetMachine ctor - Create an X86 target.
///
-X86TargetMachine::X86TargetMachine(const Target &T, const std::string &TT,
- const std::string &FS, bool is64Bit)
- : LLVMTargetMachine(T, TT),
- Subtarget(TT, FS, is64Bit),
+X86TargetMachine::X86TargetMachine(const Target &T, StringRef TT,
+ StringRef CPU, StringRef FS,
+ Reloc::Model RM, CodeModel::Model CM,
+ bool is64Bit)
+ : LLVMTargetMachine(T, TT, CPU, FS, RM, CM),
+ Subtarget(TT, CPU, FS, StackAlignmentOverride, is64Bit),
FrameLowering(*this, Subtarget),
ELFWriterInfo(is64Bit, true) {
- DefRelocModel = getRelocationModel();
-
- // If no relocation model was picked, default as appropriate for the target.
- if (getRelocationModel() == Reloc::Default) {
- // 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::Static);
- }
-
- assert(getRelocationModel() != Reloc::Default &&
- "Relocation mode not picked");
-
- // ELF and X86-64 don't have a distinct DynamicNoPIC model. DynamicNoPIC
- // is defined as a model for code which may be used in static or dynamic
- // executables but not necessarily a shared library. On X86-32 we just
- // compile in -static mode, in x86-64 we use PIC.
- if (getRelocationModel() == Reloc::DynamicNoPIC) {
- if (is64Bit)
- setRelocationModel(Reloc::PIC_);
- else if (!Subtarget.isTargetDarwin())
- setRelocationModel(Reloc::Static);
- }
-
- // If we are on Darwin, disallow static relocation model in X86-64 mode, since
- // the Mach-O file format doesn't support it.
- if (getRelocationModel() == Reloc::Static &&
- 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::GOT);
}
- // Finally, if we have "none" as our PIC style, force to static mode.
- if (Subtarget.getPICStyle() == PICStyles::None)
- setRelocationModel(Reloc::Static);
+ // default to hard float ABI
+ if (FloatABIType == FloatABI::Default)
+ FloatABIType = FloatABI::Hard;
}
+//===----------------------------------------------------------------------===//
+// Command line options for x86
+//===----------------------------------------------------------------------===//
+static cl::opt<bool>
+UseVZeroUpper("x86-use-vzeroupper",
+ cl::desc("Minimize AVX to SSE transition penalty"),
+ cl::init(false));
+
//===----------------------------------------------------------------------===//
// Pass Pipeline Configuration
//===----------------------------------------------------------------------===//
bool X86TargetMachine::addPreEmitPass(PassManagerBase &PM,
CodeGenOpt::Level OptLevel) {
- if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2()) {
- PM.add(createSSEDomainFixPass());
- return true;
+ bool ShouldPrint = false;
+ if (OptLevel != CodeGenOpt::None &&
+ (Subtarget.hasSSE2() || Subtarget.hasAVX())) {
+ PM.add(createExecutionDependencyFixPass(&X86::VR128RegClass));
+ ShouldPrint = true;
}
- return false;
+
+ if (Subtarget.hasAVX() && UseVZeroUpper) {
+ PM.add(createX86IssueVZeroUpperPass());
+ ShouldPrint = true;
+ }
+
+ return ShouldPrint;
}
bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
JITCodeEmitter &JCE) {
- // 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);
- }
-
-
PM.add(createX86JITCodeEmitterPass(*this, JCE));
return false;
}
-
-void X86TargetMachine::setCodeModelForStatic() {
-
- if (getCodeModel() != CodeModel::Default) return;
-
- // For static codegen, if we're not already set, use Small codegen.
- setCodeModel(CodeModel::Small);
-}
-
-
-void X86TargetMachine::setCodeModelForJIT() {
-
- if (getCodeModel() != CodeModel::Default) return;
-
- // 64-bit JIT places everything in the same buffer except external functions.
- if (Subtarget.is64Bit())
- setCodeModel(CodeModel::Large);
- else
- setCodeModel(CodeModel::Small);
-}
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