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Diffstat (limited to 'include/llvm/Target/TargetOptions.h')
-rw-r--r-- | include/llvm/Target/TargetOptions.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetOptions.h b/include/llvm/Target/TargetOptions.h new file mode 100644 index 0000000..06d7d79 --- /dev/null +++ b/include/llvm/Target/TargetOptions.h @@ -0,0 +1,126 @@ +//===-- llvm/Target/TargetOptions.h - Target Options ------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file defines command line option flags that are shared across various +// targets. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_TARGET_TARGETOPTIONS_H +#define LLVM_TARGET_TARGETOPTIONS_H + +namespace llvm { + /// PrintMachineCode - This flag is enabled when the -print-machineinstrs + /// option is specified on the command line, and should enable debugging + /// output from the code generator. + extern bool PrintMachineCode; + + /// NoFramePointerElim - This flag is enabled when the -disable-fp-elim is + /// specified on the command line. If the target supports the frame pointer + /// elimination optimization, this option should disable it. + extern bool NoFramePointerElim; + + /// LessPreciseFPMAD - This flag is enabled when the + /// -enable-fp-mad is specified on the command line. When this flag is off + /// (the default), the code generator is not allowed to generate mad + /// (multiply add) if the result is "less precise" than doing those operations + /// individually. + extern bool LessPreciseFPMADOption; + extern bool LessPreciseFPMAD(); + + /// NoExcessFPPrecision - This flag is enabled when the + /// -disable-excess-fp-precision flag is specified on the command line. When + /// this flag is off (the default), the code generator is allowed to produce + /// results that are "more precise" than IEEE allows. This includes use of + /// FMA-like operations and use of the X86 FP registers without rounding all + /// over the place. + extern bool NoExcessFPPrecision; + + /// UnsafeFPMath - This flag is enabled when the + /// -enable-unsafe-fp-math flag is specified on the command line. When + /// this flag is off (the default), the code generator is not allowed to + /// produce results that are "less precise" than IEEE allows. This includes + /// use of X86 instructions like FSIN and FCOS instead of libcalls. + /// UnsafeFPMath implies FiniteOnlyFPMath and LessPreciseFPMAD. + extern bool UnsafeFPMath; + + /// 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. + extern bool FiniteOnlyFPMathOption; + extern bool FiniteOnlyFPMath(); + + /// HonorSignDependentRoundingFPMath - This returns true when the + /// -enable-sign-dependent-rounding-fp-math is specified. If this returns + /// false (the default), the code generator is allowed to assume that the + /// rounding behavior is the default (round-to-zero for all floating point to + /// integer conversions, and round-to-nearest for all other arithmetic + /// truncations). If this is enabled (set to true), the code generator must + /// assume that the rounding mode may dynamically change. + extern bool HonorSignDependentRoundingFPMathOption; + extern bool HonorSignDependentRoundingFPMath(); + + /// UseSoftFloat - This flag is enabled when the -soft-float flag is specified + /// on the command line. When this flag is on, the code generator will + /// generate libcalls to the software floating point library instead of + /// target FP instructions. + extern bool UseSoftFloat; + + /// NoImplicitFloat - This flag is enabled when the -no-implicit-float flag is + /// specified on the command line. When this flag is on, the code generator + /// won't generate any implicit floating point instructions. I.e., no XMM or + /// x87 or vectorized memcpy/memmove instructions. This is for X86 only. + extern bool NoImplicitFloat; + + /// NoZerosInBSS - By default some codegens place zero-initialized data to + /// .bss section. This flag disables such behaviour (necessary, e.g. for + /// crt*.o compiling). + extern bool NoZerosInBSS; + + /// ExceptionHandling - This flag indicates that exception information should + /// be emitted. + extern bool ExceptionHandling; + + /// UnwindTablesMandatory - This flag indicates that unwind tables should + /// be emitted for all functions. + extern bool UnwindTablesMandatory; + + /// PerformTailCallOpt - This flag is enabled when -tailcallopt is specified + /// on the commandline. When the flag is on, the target will perform tail call + /// optimization (pop the caller's stack) providing it supports it. + extern bool PerformTailCallOpt; + + /// StackAlignment - Override default stack alignment for target. + extern unsigned StackAlignment; + + /// RealignStack - This flag indicates, whether stack should be automatically + /// realigned, if needed. + extern bool RealignStack; + + /// DisableJumpTables - This flag indicates jump tables should not be + /// generated. + extern bool DisableJumpTables; + + /// EnableFastISel - This flag enables fast-path instruction selection + /// which trades away generated code quality in favor of reducing + /// compile time. + extern bool EnableFastISel; + + /// StrongPHIElim - This flag enables more aggressive PHI elimination + /// wth earlier copy coalescing. + extern bool StrongPHIElim; + + /// DisableRedZone - This flag disables use of the "Red Zone" on + /// targets which would otherwise have one. + extern bool DisableRedZone; + +} // End llvm namespace + +#endif |