1 //===-- llvm/Target/TargetOptions.h - Target Options ------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines command line option flags that are shared across various
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TARGET_TARGETOPTIONS_H
16 #define LLVM_TARGET_TARGETOPTIONS_H
19 /// PrintMachineCode - This flag is enabled when the -print-machineinstrs
20 /// option is specified on the command line, and should enable debugging
21 /// output from the code generator.
22 extern bool PrintMachineCode;
24 /// NoFramePointerElim - This flag is enabled when the -disable-fp-elim is
25 /// specified on the command line. If the target supports the frame pointer
26 /// elimination optimization, this option should disable it.
27 extern bool NoFramePointerElim;
29 /// NoExcessFPPrecision - This flag is enabled when the
30 /// -disable-excess-fp-precision flag is specified on the command line. When
31 /// this flag is off (the default), the code generator is allowed to produce
32 /// results that are "more precise" than IEEE allows. This includes use of
33 /// FMA-like operations and use of the X86 FP registers without rounding all
35 extern bool NoExcessFPPrecision;
37 /// UnsafeFPMath - This flag is enabled when the
38 /// -enable-unsafe-fp-math flag is specified on the command line. When
39 /// this flag is off (the default), the code generator is not allowed to
40 /// produce results that are "less precise" than IEEE allows. This includes
41 /// use of X86 instructions like FSIN and FCOS instead of libcalls.
42 /// UnsafeFPMath implies FiniteOnlyFPMath.
43 extern bool UnsafeFPMath;
45 /// FiniteOnlyFPMath - This returns true when the -enable-finite-only-fp-math
46 /// option is specified on the command line. If this returns false (default),
47 /// the code generator is not allowed to assume that FP arithmetic arguments
48 /// and results are never NaNs or +-Infs.
49 extern bool FiniteOnlyFPMathOption;
50 extern bool FiniteOnlyFPMath();
51 } // End llvm namespace