#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 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);
-
- if (TheTriple.isOSDarwin() || TheTriple.getEnvironment() == Triple::MachO)
- return createMachOStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
-
- if (TheTriple.isOSWindows())
- return createWinCOFFStreamer(Ctx, TAB, *_Emitter, _OS, RelaxAll);
-
- 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 code emitter.
- TargetRegistry::RegisterCodeEmitter(TheX86_32Target,
- createX86MCCodeEmitter);
- TargetRegistry::RegisterCodeEmitter(TheX86_64Target,
- createX86MCCodeEmitter);
-
- // 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);
}
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()) {
+ bool ShouldPrint = false;
+ if (OptLevel != CodeGenOpt::None &&
+ (Subtarget.hasSSE2() || Subtarget.hasAVX())) {
PM.add(createSSEDomainFixPass());
- return true;
+ ShouldPrint = true;
}
- return false;
+
+ if (Subtarget.hasAVX() && UseVZeroUpper) {
+ PM.add(createX86IssueVZeroUpperPass());
+ ShouldPrint = true;
+ }
+
+ return ShouldPrint;
}
bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,