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| 1 //===-- TargetMachine.cpp - General Target Information ---------------------==// | 1 //===-- TargetMachine.cpp - General Target Information ---------------------==// |
| 2 // | 2 // |
| 3 // The LLVM Compiler Infrastructure | 3 // The LLVM Compiler Infrastructure |
| 4 // | 4 // |
| 5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
| 7 // | 7 // |
| 8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
| 9 // | 9 // |
| 10 // This file describes the general parts of a Target machine. | 10 // This file describes the general parts of a Target machine. |
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| 28 bool NoExcessFPPrecision; | 28 bool NoExcessFPPrecision; |
| 29 bool UnsafeFPMath; | 29 bool UnsafeFPMath; |
| 30 bool FiniteOnlyFPMathOption; | 30 bool FiniteOnlyFPMathOption; |
| 31 bool HonorSignDependentRoundingFPMathOption; | 31 bool HonorSignDependentRoundingFPMathOption; |
| 32 bool UseSoftFloat; | 32 bool UseSoftFloat; |
| 33 FloatABI::ABIType FloatABIType; | 33 FloatABI::ABIType FloatABIType; |
| 34 bool NoImplicitFloat; | 34 bool NoImplicitFloat; |
| 35 bool NoZerosInBSS; | 35 bool NoZerosInBSS; |
| 36 bool DwarfExceptionHandling; | 36 bool DwarfExceptionHandling; |
| 37 bool SjLjExceptionHandling; | 37 bool SjLjExceptionHandling; |
| 38 bool JITEmitDebugInfo; |
| 38 bool UnwindTablesMandatory; | 39 bool UnwindTablesMandatory; |
| 39 Reloc::Model RelocationModel; | 40 Reloc::Model RelocationModel; |
| 40 CodeModel::Model CMModel; | 41 CodeModel::Model CMModel; |
| 41 bool PerformTailCallOpt; | 42 bool PerformTailCallOpt; |
| 42 unsigned StackAlignment; | 43 unsigned StackAlignment; |
| 43 bool RealignStack; | 44 bool RealignStack; |
| 44 bool DisableJumpTables; | 45 bool DisableJumpTables; |
| 45 bool StrongPHIElim; | 46 bool StrongPHIElim; |
| 46 bool AsmVerbosityDefault(false); | 47 bool AsmVerbosityDefault(false); |
| 47 } | 48 } |
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| 107 static cl::opt<bool, true> | 108 static cl::opt<bool, true> |
| 108 EnableDwarfExceptionHandling("enable-eh", | 109 EnableDwarfExceptionHandling("enable-eh", |
| 109 cl::desc("Emit DWARF exception handling (default if target supports)"), | 110 cl::desc("Emit DWARF exception handling (default if target supports)"), |
| 110 cl::location(DwarfExceptionHandling), | 111 cl::location(DwarfExceptionHandling), |
| 111 cl::init(false)); | 112 cl::init(false)); |
| 112 static cl::opt<bool, true> | 113 static cl::opt<bool, true> |
| 113 EnableSjLjExceptionHandling("enable-sjlj-eh", | 114 EnableSjLjExceptionHandling("enable-sjlj-eh", |
| 114 cl::desc("Emit SJLJ exception handling (default if target supports)"), | 115 cl::desc("Emit SJLJ exception handling (default if target supports)"), |
| 115 cl::location(SjLjExceptionHandling), | 116 cl::location(SjLjExceptionHandling), |
| 116 cl::init(false)); | 117 cl::init(false)); |
| 118 // In debug builds, make this default to true. |
| 119 #ifdef NDEBUG |
| 120 #define EMIT_DEBUG false |
| 121 #else |
| 122 #define EMIT_DEBUG true |
| 123 #endif |
| 124 static cl::opt<bool, true> |
| 125 EmitJitDebugInfo("jit-emit-debug", |
| 126 cl::desc("Emit debug information to debugger"), |
| 127 cl::location(JITEmitDebugInfo), |
| 128 cl::init(EMIT_DEBUG)); |
| 129 #undef EMIT_DEBUG |
| 117 static cl::opt<bool, true> | 130 static cl::opt<bool, true> |
| 118 EnableUnwindTables("unwind-tables", | 131 EnableUnwindTables("unwind-tables", |
| 119 cl::desc("Generate unwinding tables for all functions"), | 132 cl::desc("Generate unwinding tables for all functions"), |
| 120 cl::location(UnwindTablesMandatory), | 133 cl::location(UnwindTablesMandatory), |
| 121 cl::init(false)); | 134 cl::init(false)); |
| 122 | 135 |
| 123 static cl::opt<llvm::Reloc::Model, true> | 136 static cl::opt<llvm::Reloc::Model, true> |
| 124 DefRelocationModel("relocation-model", | 137 DefRelocationModel("relocation-model", |
| 125 cl::desc("Choose relocation model"), | 138 cl::desc("Choose relocation model"), |
| 126 cl::location(RelocationModel), | 139 cl::location(RelocationModel), |
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| 236 /// the code generator is not allowed to assume that FP arithmetic arguments | 249 /// the code generator is not allowed to assume that FP arithmetic arguments |
| 237 /// and results are never NaNs or +-Infs. | 250 /// and results are never NaNs or +-Infs. |
| 238 bool FiniteOnlyFPMath() { return UnsafeFPMath || FiniteOnlyFPMathOption; } | 251 bool FiniteOnlyFPMath() { return UnsafeFPMath || FiniteOnlyFPMathOption; } |
| 239 | 252 |
| 240 /// HonorSignDependentRoundingFPMath - Return true if the codegen must assume | 253 /// HonorSignDependentRoundingFPMath - Return true if the codegen must assume |
| 241 /// that the rounding mode of the FPU can change from its default. | 254 /// that the rounding mode of the FPU can change from its default. |
| 242 bool HonorSignDependentRoundingFPMath() { | 255 bool HonorSignDependentRoundingFPMath() { |
| 243 return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption; | 256 return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption; |
| 244 } | 257 } |
| 245 } | 258 } |
| 246 | |
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