//
//===----------------------------------------------------------------------===//
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
//
namespace llvm {
- bool LessPreciseFPMADOption;
- bool PrintMachineCode;
- bool NoFramePointerElim;
- bool NoFramePointerElimNonLeaf;
- bool NoExcessFPPrecision;
- bool UnsafeFPMath;
- bool NoInfsFPMath;
- bool NoNaNsFPMath;
- bool HonorSignDependentRoundingFPMathOption;
- bool UseSoftFloat;
- FloatABI::ABIType FloatABIType;
- bool NoImplicitFloat;
- bool NoZerosInBSS;
- bool JITExceptionHandling;
- bool JITEmitDebugInfo;
- bool JITEmitDebugInfoToDisk;
- bool GuaranteedTailCallOpt;
- unsigned StackAlignmentOverride;
- bool RealignStack;
- bool DisableJumpTables;
- bool StrongPHIElim;
bool HasDivModLibcall;
bool AsmVerbosityDefault(false);
- bool EnableSegmentedStacks;
}
-static cl::opt<bool, true>
-PrintCode("print-machineinstrs",
- cl::desc("Print generated machine code"),
- cl::location(PrintMachineCode), cl::init(false));
-static cl::opt<bool, true>
-DisableFPElim("disable-fp-elim",
- cl::desc("Disable frame pointer elimination optimization"),
- cl::location(NoFramePointerElim),
- cl::init(false));
-static cl::opt<bool, true>
-DisableFPElimNonLeaf("disable-non-leaf-fp-elim",
- cl::desc("Disable frame pointer elimination optimization for non-leaf funcs"),
- cl::location(NoFramePointerElimNonLeaf),
- cl::init(false));
-static cl::opt<bool, true>
-DisableExcessPrecision("disable-excess-fp-precision",
- cl::desc("Disable optimizations that may increase FP precision"),
- cl::location(NoExcessFPPrecision),
- cl::init(false));
-static cl::opt<bool, true>
-EnableFPMAD("enable-fp-mad",
- cl::desc("Enable less precise MAD instructions to be generated"),
- cl::location(LessPreciseFPMADOption),
- cl::init(false));
-static cl::opt<bool, true>
-EnableUnsafeFPMath("enable-unsafe-fp-math",
- cl::desc("Enable optimizations that may decrease FP precision"),
- cl::location(UnsafeFPMath),
- cl::init(false));
-static cl::opt<bool, true>
-EnableNoInfsFPMath("enable-no-infs-fp-math",
- cl::desc("Enable FP math optimizations that assume no +-Infs"),
- cl::location(NoInfsFPMath),
- cl::init(false));
-static cl::opt<bool, true>
-EnableNoNaNsFPMath("enable-no-nans-fp-math",
- cl::desc("Enable FP math optimizations that assume no NaNs"),
- cl::location(NoNaNsFPMath),
- cl::init(false));
-static cl::opt<bool, true>
-EnableHonorSignDependentRoundingFPMath("enable-sign-dependent-rounding-fp-math",
- cl::Hidden,
- cl::desc("Force codegen to assume rounding mode can change dynamically"),
- cl::location(HonorSignDependentRoundingFPMathOption),
- cl::init(false));
-static cl::opt<bool, true>
-GenerateSoftFloatCalls("soft-float",
- cl::desc("Generate software floating point library calls"),
- cl::location(UseSoftFloat),
- cl::init(false));
-static cl::opt<llvm::FloatABI::ABIType, true>
-FloatABIForCalls("float-abi",
- cl::desc("Choose float ABI type"),
- cl::location(FloatABIType),
- cl::init(FloatABI::Default),
- cl::values(
- clEnumValN(FloatABI::Default, "default",
- "Target default float ABI type"),
- clEnumValN(FloatABI::Soft, "soft",
- "Soft float ABI (implied by -soft-float)"),
- clEnumValN(FloatABI::Hard, "hard",
- "Hard float ABI (uses FP registers)"),
- clEnumValEnd));
-static cl::opt<bool, true>
-DontPlaceZerosInBSS("nozero-initialized-in-bss",
- cl::desc("Don't place zero-initialized symbols into bss section"),
- cl::location(NoZerosInBSS),
- cl::init(false));
-static cl::opt<bool, true>
-EnableJITExceptionHandling("jit-enable-eh",
- cl::desc("Emit exception handling information"),
- cl::location(JITExceptionHandling),
- cl::init(false));
-// In debug builds, make this default to true.
-#ifdef NDEBUG
-#define EMIT_DEBUG false
-#else
-#define EMIT_DEBUG true
-#endif
-static cl::opt<bool, true>
-EmitJitDebugInfo("jit-emit-debug",
- cl::desc("Emit debug information to debugger"),
- cl::location(JITEmitDebugInfo),
- cl::init(EMIT_DEBUG));
-#undef EMIT_DEBUG
-static cl::opt<bool, true>
-EmitJitDebugInfoToDisk("jit-emit-debug-to-disk",
- cl::Hidden,
- cl::desc("Emit debug info objfiles to disk"),
- cl::location(JITEmitDebugInfoToDisk),
- cl::init(false));
-
-static cl::opt<bool, true>
-EnableGuaranteedTailCallOpt("tailcallopt",
- cl::desc("Turn fastcc calls into tail calls by (potentially) changing ABI."),
- cl::location(GuaranteedTailCallOpt),
- cl::init(false));
-static cl::opt<unsigned, true>
-OverrideStackAlignment("stack-alignment",
- cl::desc("Override default stack alignment"),
- cl::location(StackAlignmentOverride),
- cl::init(0));
-static cl::opt<bool, true>
-EnableRealignStack("realign-stack",
- cl::desc("Realign stack if needed"),
- cl::location(RealignStack),
- cl::init(true));
-static cl::opt<bool, true>
-DisableSwitchTables(cl::Hidden, "disable-jump-tables",
- cl::desc("Do not generate jump tables."),
- cl::location(DisableJumpTables),
- cl::init(false));
-static cl::opt<bool, true>
-EnableStrongPHIElim(cl::Hidden, "strong-phi-elim",
- cl::desc("Use strong PHI elimination."),
- cl::location(StrongPHIElim),
- cl::init(false));
-static cl::opt<std::string>
-TrapFuncName("trap-func", cl::Hidden,
- cl::desc("Emit a call to trap function rather than a trap instruction"),
- cl::init(""));
static cl::opt<bool>
DataSections("fdata-sections",
cl::desc("Emit data into separate sections"),
FunctionSections("ffunction-sections",
cl::desc("Emit functions into separate sections"),
cl::init(false));
-static cl::opt<bool, true>
-SegmentedStacks("segmented-stacks",
- cl::desc("Use segmented stacks if possible."),
- cl::location(EnableSegmentedStacks),
- cl::init(false));
-
+
//---------------------------------------------------------------------------
// TargetMachine Class
//
TargetMachine::TargetMachine(const Target &T,
- StringRef TT, StringRef CPU, StringRef FS)
+ 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) {
- // Typically it will be subtargets that will adjust FloatABIType from Default
- // to Soft or Hard.
- if (UseSoftFloat)
- FloatABIType = FloatABI::Soft;
+ MCUseCFI(true),
+ MCUseDwarfDirectory(false),
+ Options(Options) {
}
TargetMachine::~TargetMachine() {
return CodeGenInfo->getCodeModel();
}
+/// 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;
}
DataSections = V;
}
-namespace llvm {
- /// DisableFramePointerElim - This returns true if frame pointer elimination
- /// optimization should be disabled for the given machine function.
- bool DisableFramePointerElim(const MachineFunction &MF) {
- // Check to see if we should eliminate non-leaf frame pointers and then
- // check to see if we should eliminate all frame pointers.
- if (NoFramePointerElimNonLeaf && !NoFramePointerElim) {
- const MachineFrameInfo *MFI = MF.getFrameInfo();
- return MFI->hasCalls();
- }
-
- return NoFramePointerElim;
- }
-
- /// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
- /// is specified on the command line. When this flag is off(default), the
- /// code generator is not allowed to generate mad (multiply add) if the
- /// result is "less precise" than doing those operations individually.
- bool LessPreciseFPMAD() { return UnsafeFPMath || LessPreciseFPMADOption; }
-
- /// HonorSignDependentRoundingFPMath - Return true if the codegen must assume
- /// that the rounding mode of the FPU can change from its default.
- bool HonorSignDependentRoundingFPMath() {
- return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption;
- }
-
- /// getTrapFunctionName - If this returns a non-empty string, this means isel
- /// should lower Intrinsic::trap to a call to the specified function name
- /// instead of an ISD::TRAP node.
- StringRef getTrapFunctionName() {
- return TrapFuncName;
- }
-}
projects / oota-llvm.git / blobdiff