//
//===----------------------------------------------------------------------===//
-#include "llvm/Target/TargetAsmInfo.h"
+#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"
#include "llvm/Support/CommandLine.h"
//
namespace llvm {
+ bool LessPreciseFPMADOption;
bool PrintMachineCode;
bool NoFramePointerElim;
+ bool NoFramePointerElimNonLeaf;
bool NoExcessFPPrecision;
bool UnsafeFPMath;
- bool FiniteOnlyFPMathOption;
+ bool NoInfsFPMath;
+ bool NoNaNsFPMath;
bool HonorSignDependentRoundingFPMathOption;
bool UseSoftFloat;
+ FloatABI::ABIType FloatABIType;
+ bool NoImplicitFloat;
bool NoZerosInBSS;
- bool ExceptionHandling;
+ bool JITExceptionHandling;
+ bool JITEmitDebugInfo;
+ bool JITEmitDebugInfoToDisk;
+ bool UnwindTablesMandatory;
Reloc::Model RelocationModel;
CodeModel::Model CMModel;
- bool PerformTailCallOpt;
- bool OptimizeForSize;
-}
-namespace {
- cl::opt<bool, true> PrintCode("print-machineinstrs",
- cl::desc("Print generated machine code"),
- cl::location(PrintMachineCode), cl::init(false));
-
- cl::opt<bool, true>
- DisableFPElim("disable-fp-elim",
- cl::desc("Disable frame pointer elimination optimization"),
- cl::location(NoFramePointerElim),
- cl::init(false));
- cl::opt<bool, true>
- DisableExcessPrecision("disable-excess-fp-precision",
- cl::desc("Disable optimizations that may increase FP precision"),
- cl::location(NoExcessFPPrecision),
- cl::init(false));
- cl::opt<bool, true>
- EnableUnsafeFPMath("enable-unsafe-fp-math",
- cl::desc("Enable optimizations that may decrease FP precision"),
- cl::location(UnsafeFPMath),
- cl::init(false));
- cl::opt<bool, true>
- EnableFiniteOnlyFPMath("enable-finite-only-fp-math",
- cl::desc("Enable optimizations that assumes non- NaNs / +-Infs"),
- cl::location(FiniteOnlyFPMathOption),
- cl::init(false));
- cl::opt<bool, true>
- EnableHonorSignDependentRoundingFPMath(cl::Hidden,
- "enable-sign-dependent-rounding-fp-math",
- cl::desc("Force codegen to assume rounding mode can change dynamically"),
- cl::location(HonorSignDependentRoundingFPMathOption),
- cl::init(false));
-
- cl::opt<bool, true>
- GenerateSoftFloatCalls("soft-float",
- cl::desc("Generate software floating point library calls"),
- cl::location(UseSoftFloat),
- cl::init(false));
- 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));
- cl::opt<bool, true>
- EnableExceptionHandling("enable-eh",
- cl::desc("Exception handling should be emitted."),
- cl::location(ExceptionHandling),
- cl::init(false));
-
- cl::opt<llvm::Reloc::Model, true>
- DefRelocationModel(
- "relocation-model",
- cl::desc("Choose relocation model"),
- cl::location(RelocationModel),
- cl::init(Reloc::Default),
- cl::values(
- clEnumValN(Reloc::Default, "default",
- " Target default relocation model"),
- clEnumValN(Reloc::Static, "static",
- " Non-relocatable code"),
- clEnumValN(Reloc::PIC_, "pic",
- " Fully relocatable, position independent code"),
- clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
- " Relocatable external references, non-relocatable code"),
- clEnumValEnd));
- cl::opt<llvm::CodeModel::Model, true>
- DefCodeModel(
- "code-model",
- cl::desc("Choose code model"),
- cl::location(CMModel),
- cl::init(CodeModel::Default),
- cl::values(
- clEnumValN(CodeModel::Default, "default",
- " Target default code model"),
- clEnumValN(CodeModel::Small, "small",
- " Small code model"),
- clEnumValN(CodeModel::Kernel, "kernel",
- " Kernel code model"),
- clEnumValN(CodeModel::Medium, "medium",
- " Medium code model"),
- clEnumValN(CodeModel::Large, "large",
- " Large code model"),
- clEnumValEnd));
-
- cl::opt<bool, true>
- EnablePerformTailCallOpt("tailcallopt",
- cl::desc("Turn on tail call optimization."),
- cl::location(PerformTailCallOpt),
- cl::init(false));
- cl::opt<bool, true>
- EnableOptimizeForSize("optimize-size",
- cl::desc("Optimize for size."),
- cl::location(OptimizeForSize),
- cl::init(false));
+ bool GuaranteedTailCallOpt;
+ unsigned StackAlignment;
+ bool RealignStack;
+ bool DisableJumpTables;
+ bool StrongPHIElim;
+ bool AsmVerbosityDefault(false);
}
+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>
+EnableUnwindTables("unwind-tables",
+ cl::desc("Generate unwinding tables for all functions"),
+ cl::location(UnwindTablesMandatory),
+ cl::init(false));
+
+static cl::opt<llvm::Reloc::Model, true>
+DefRelocationModel("relocation-model",
+ cl::desc("Choose relocation model"),
+ cl::location(RelocationModel),
+ cl::init(Reloc::Default),
+ cl::values(
+ clEnumValN(Reloc::Default, "default",
+ "Target default relocation model"),
+ clEnumValN(Reloc::Static, "static",
+ "Non-relocatable code"),
+ clEnumValN(Reloc::PIC_, "pic",
+ "Fully relocatable, position independent code"),
+ clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
+ "Relocatable external references, non-relocatable code"),
+ clEnumValEnd));
+static cl::opt<llvm::CodeModel::Model, true>
+DefCodeModel("code-model",
+ cl::desc("Choose code model"),
+ cl::location(CMModel),
+ cl::init(CodeModel::Default),
+ cl::values(
+ clEnumValN(CodeModel::Default, "default",
+ "Target default code model"),
+ clEnumValN(CodeModel::Small, "small",
+ "Small code model"),
+ clEnumValN(CodeModel::Kernel, "kernel",
+ "Kernel code model"),
+ clEnumValN(CodeModel::Medium, "medium",
+ "Medium code model"),
+ clEnumValN(CodeModel::Large, "large",
+ "Large code model"),
+ clEnumValEnd));
+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(StackAlignment),
+ 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<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)
+ : TheTarget(T), AsmInfo(0),
+ MCRelaxAll(false) {
+ // Typically it will be subtargets that will adjust FloatABIType from Default
+ // to Soft or Hard.
+ if (UseSoftFloat)
+ FloatABIType = FloatABI::Soft;
+}
+
TargetMachine::~TargetMachine() {
delete AsmInfo;
}
CMModel = Model;
}
+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;
+}
+
namespace llvm {
- /// FiniteOnlyFPMath - This returns true when the -enable-finite-only-fp-math
- /// option is specified on the command line. If this returns false (default),
- /// the code generator is not allowed to assume that FP arithmetic arguments
- /// and results are never NaNs or +-Infs.
- bool FiniteOnlyFPMath() { return UnsafeFPMath || FiniteOnlyFPMathOption; }
-
+ /// 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;
}
}
-
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