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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 0000000..b9b2526 --- /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; +} + |