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Diffstat (limited to 'contrib/llvm/lib/Target/TargetMachine.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/TargetMachine.cpp | 130 | 
1 files changed, 130 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/TargetMachine.cpp b/contrib/llvm/lib/Target/TargetMachine.cpp new file mode 100644 index 000000000000..b9b2526876fd --- /dev/null +++ b/contrib/llvm/lib/Target/TargetMachine.cpp @@ -0,0 +1,130 @@ +//===-- TargetMachine.cpp - General Target Information ---------------------==// +// +//                     The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file describes the general parts of a Target machine. +// +//===----------------------------------------------------------------------===// + +#include "llvm/GlobalValue.h" +#include "llvm/MC/MCAsmInfo.h" +#include "llvm/MC/MCCodeGenInfo.h" +#include "llvm/Target/TargetMachine.h" +#include "llvm/Support/CommandLine.h" +using namespace llvm; + +//--------------------------------------------------------------------------- +// Command-line options that tend to be useful on more than one back-end. +// + +namespace llvm { +  bool HasDivModLibcall; +  bool AsmVerbosityDefault(false); +} + +static cl::opt<bool> +DataSections("fdata-sections", +  cl::desc("Emit data into separate sections"), +  cl::init(false)); +static cl::opt<bool> +FunctionSections("ffunction-sections", +  cl::desc("Emit functions into separate sections"), +  cl::init(false)); + +//--------------------------------------------------------------------------- +// TargetMachine Class +// + +TargetMachine::TargetMachine(const Target &T, +                             StringRef TT, StringRef CPU, StringRef FS, +                             const TargetOptions &Options) +  : TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS), +    CodeGenInfo(0), AsmInfo(0), +    MCRelaxAll(false), +    MCNoExecStack(false), +    MCSaveTempLabels(false), +    MCUseLoc(true), +    MCUseCFI(true), +    MCUseDwarfDirectory(false), +    Options(Options) { +} + +TargetMachine::~TargetMachine() { +  delete CodeGenInfo; +  delete AsmInfo; +} + +/// getRelocationModel - Returns the code generation relocation model. The +/// choices are static, PIC, and dynamic-no-pic, and target default. +Reloc::Model TargetMachine::getRelocationModel() const { +  if (!CodeGenInfo) +    return Reloc::Default; +  return CodeGenInfo->getRelocationModel(); +} + +/// getCodeModel - Returns the code model. The choices are small, kernel, +/// medium, large, and target default. +CodeModel::Model TargetMachine::getCodeModel() const { +  if (!CodeGenInfo) +    return CodeModel::Default; +  return CodeGenInfo->getCodeModel(); +} + +TLSModel::Model TargetMachine::getTLSModel(const GlobalValue *GV) const { +  bool isLocal = GV->hasLocalLinkage(); +  bool isDeclaration = GV->isDeclaration(); +  // FIXME: what should we do for protected and internal visibility? +  // For variables, is internal different from hidden? +  bool isHidden = GV->hasHiddenVisibility(); + +  if (getRelocationModel() == Reloc::PIC_ && +      !Options.PositionIndependentExecutable) { +    if (isLocal || isHidden) +      return TLSModel::LocalDynamic; +    else +      return TLSModel::GeneralDynamic; +  } else { +    if (!isDeclaration || isHidden) +      return TLSModel::LocalExec; +    else +      return TLSModel::InitialExec; +  } +} + +/// getOptLevel - Returns the optimization level: None, Less, +/// Default, or Aggressive. +CodeGenOpt::Level TargetMachine::getOptLevel() const { +  if (!CodeGenInfo) +    return CodeGenOpt::Default; +  return CodeGenInfo->getOptLevel(); +} + +bool TargetMachine::getAsmVerbosityDefault() { +  return AsmVerbosityDefault; +} + +void TargetMachine::setAsmVerbosityDefault(bool V) { +  AsmVerbosityDefault = V; +} + +bool TargetMachine::getFunctionSections() { +  return FunctionSections; +} + +bool TargetMachine::getDataSections() { +  return DataSections; +} + +void TargetMachine::setFunctionSections(bool V) { +  FunctionSections = V; +} + +void TargetMachine::setDataSections(bool V) { +  DataSections = V; +} +  | 
