blob: 435a5e7e0bf94a52a07dc4692adad37f465d8efd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
//===-- TargetOptionsImpl.cpp - Options that apply to all targets ----------==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the methods in the TargetOptions.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/Target/TargetOptions.h"
using namespace llvm;
/// DisableFramePointerElim - This returns true if frame pointer elimination
/// optimization should be disabled for the given machine function.
bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
// Check to see if we should eliminate non-leaf frame pointers and then
// check to see if we should eliminate all frame pointers.
if (NoFramePointerElimNonLeaf && !NoFramePointerElim) {
const MachineFrameInfo *MFI = MF.getFrameInfo();
return MFI->hasCalls();
}
return NoFramePointerElim;
}
/// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
/// is specified on the command line. When this flag is off(default), the
/// code generator is not allowed to generate mad (multiply add) if the
/// result is "less precise" than doing those operations individually.
bool TargetOptions::LessPreciseFPMAD() const {
return UnsafeFPMath || LessPreciseFPMADOption;
}
/// HonorSignDependentRoundingFPMath - Return true if the codegen must assume
/// that the rounding mode of the FPU can change from its default.
bool TargetOptions::HonorSignDependentRoundingFPMath() const {
return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption;
}
/// getTrapFunctionName - If this returns a non-empty string, this means isel
/// should lower Intrinsic::trap to a call to the specified function name
/// instead of an ISD::TRAP node.
StringRef TargetOptions::getTrapFunctionName() const {
return TrapFuncName;
}
bool TargetOptions::operator==(const TargetOptions &TO) {
#define ARE_EQUAL(X) X == TO.X
return
ARE_EQUAL(UnsafeFPMath) &&
ARE_EQUAL(NoInfsFPMath) &&
ARE_EQUAL(NoNaNsFPMath) &&
ARE_EQUAL(HonorSignDependentRoundingFPMathOption) &&
ARE_EQUAL(UseSoftFloat) &&
ARE_EQUAL(NoZerosInBSS) &&
ARE_EQUAL(JITExceptionHandling) &&
ARE_EQUAL(JITEmitDebugInfo) &&
ARE_EQUAL(JITEmitDebugInfoToDisk) &&
ARE_EQUAL(GuaranteedTailCallOpt) &&
ARE_EQUAL(DisableTailCalls) &&
ARE_EQUAL(StackAlignmentOverride) &&
ARE_EQUAL(RealignStack) &&
ARE_EQUAL(SSPBufferSize) &&
ARE_EQUAL(EnableFastISel) &&
ARE_EQUAL(PositionIndependentExecutable) &&
ARE_EQUAL(EnableSegmentedStacks) &&
ARE_EQUAL(UseInitArray) &&
ARE_EQUAL(TrapFuncName) &&
ARE_EQUAL(FloatABIType) &&
ARE_EQUAL(AllowFPOpFusion);
#undef ARE_EQUAL
}
|
