llvm-6502/include/llvm/Target/TargetOptions.h
2005-04-30 04:09:52 +00:00

53 lines
2.3 KiB
C++

//===-- llvm/Target/TargetOptions.h - Target Options ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and 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;
/// 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;
/// PatternISelTriState - This flag is enabled when -pattern-isel=X is
/// specified on the command line. The default value is 2, in which case the
/// target chooses what is best for it. Setting X to 0 forces the use of
/// a simple ISel if available, while setting it to 1 forces the use of a
/// pattern ISel if available.
extern int PatternISelTriState;
/// 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.
extern bool UnsafeFPMath;
} // End llvm namespace
#endif