TargetOptions.h revision 34695381d626485a560594f162701088079589df 
1//===-- llvm/Target/TargetOptions.h - Target Options ------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
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.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines command line option flags that are shared across various
11// targets.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_TARGET_TARGETOPTIONS_H
16#define LLVM_TARGET_TARGETOPTIONS_H
17
18namespace llvm {
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;
23
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;
28
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
34  /// over the place.
35  extern bool NoExcessFPPrecision;
36
37  /// PatternISelTriState - This flag is enabled when -pattern-isel=X is
38  /// specified on the command line.  The default value is 2, in which case the
39  /// target chooses what is best for it.  Setting X to 0 forces the use of
40  /// a simple ISel if available, while setting it to 1 forces the use of a
41  /// pattern ISel if available.
42  extern int PatternISelTriState;
43
44} // End llvm namespace
45
46#endif
47