本文整理汇总了C++中TargetLibraryInfo类的典型用法代码示例。如果您正苦于以下问题：C++ TargetLibraryInfo类的具体用法？C++ TargetLibraryInfo怎么用？C++ TargetLibraryInfo使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了TargetLibraryInfo类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: if
//.........这里部分代码省略.........
// Set frame pointer elimination mode.
if (!CodeGenOpts.DisableFPElim) {
Options.NoFramePointerElim = false;
Options.NoFramePointerElimNonLeaf = false;
} else if (CodeGenOpts.OmitLeafFramePointer) {
Options.NoFramePointerElim = false;
Options.NoFramePointerElimNonLeaf = true;
} else {
Options.NoFramePointerElim = true;
Options.NoFramePointerElimNonLeaf = true;
}
if (CodeGenOpts.UseInitArray)
Options.UseInitArray = true;
// Set float ABI type.
if (CodeGenOpts.FloatABI == "soft" || CodeGenOpts.FloatABI == "softfp")
Options.FloatABIType = llvm::FloatABI::Soft;
else if (CodeGenOpts.FloatABI == "hard")
Options.FloatABIType = llvm::FloatABI::Hard;
else {
assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!");
Options.FloatABIType = llvm::FloatABI::Default;
}
// Set FP fusion mode.
switch (LangOpts.getFPContractMode()) {
case LangOptions::FPC_Off:
Options.AllowFPOpFusion = llvm::FPOpFusion::Strict;
break;
case LangOptions::FPC_On:
Options.AllowFPOpFusion = llvm::FPOpFusion::Standard;
break;
case LangOptions::FPC_Fast:
Options.AllowFPOpFusion = llvm::FPOpFusion::Fast;
break;
}
Options.LessPreciseFPMADOption = CodeGenOpts.LessPreciseFPMAD;
Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath;
Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath;
Options.NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS;
Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath;
Options.UseSoftFloat = CodeGenOpts.SoftFloat;
Options.StackAlignmentOverride = CodeGenOpts.StackAlignment;
Options.RealignStack = CodeGenOpts.StackRealignment;
Options.DisableTailCalls = CodeGenOpts.DisableTailCalls;
Options.TrapFuncName = CodeGenOpts.TrapFuncName;
Options.PositionIndependentExecutable = LangOpts.PIELevel != 0;
TargetMachine *TM = TheTarget->createTargetMachine(Triple, TargetOpts.CPU,
FeaturesStr, Options,
RM, CM, OptLevel);
if (CodeGenOpts.RelaxAll)
TM->setMCRelaxAll(true);
if (CodeGenOpts.SaveTempLabels)
TM->setMCSaveTempLabels(true);
if (CodeGenOpts.NoDwarf2CFIAsm)
TM->setMCUseCFI(false);
if (!CodeGenOpts.NoDwarfDirectoryAsm)
TM->setMCUseDwarfDirectory(true);
if (CodeGenOpts.NoExecStack)
TM->setMCNoExecStack(true);
// Create the code generator passes.
PassManager *PM = getCodeGenPasses();
// Add LibraryInfo.
TargetLibraryInfo *TLI = new TargetLibraryInfo();
if (!CodeGenOpts.SimplifyLibCalls)
TLI->disableAllFunctions();
PM->add(TLI);
// Normal mode, emit a .s or .o file by running the code generator. Note,
// this also adds codegenerator level optimization passes.
TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile;
if (Action == Backend_EmitObj)
CGFT = TargetMachine::CGFT_ObjectFile;
else if (Action == Backend_EmitMCNull)
CGFT = TargetMachine::CGFT_Null;
else
assert(Action == Backend_EmitAssembly && "Invalid action!");
// Add ObjC ARC final-cleanup optimizations. This is done as part of the
// "codegen" passes so that it isn't run multiple times when there is
// inlining happening.
if (LangOpts.ObjCAutoRefCount &&
CodeGenOpts.OptimizationLevel > 0)
PM->add(createObjCARCContractPass());
if (TM->addPassesToEmitFile(*PM, OS, CGFT,
/*DisableVerify=*/!CodeGenOpts.VerifyModule)) {
Diags.Report(diag::err_fe_unable_to_interface_with_target);
return false;
}
return true;
}