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comparison lib/CodeGen/TargetOptionsImpl.cpp @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 60c9769439b8
children 1172e4bd9c6f
comparison
equal deleted inserted replaced
84:f3e34b893a5f 95:afa8332a0e37
10 // This file implements the methods in the TargetOptions. 10 // This file implements the methods in the TargetOptions.
11 // 11 //
12 //===----------------------------------------------------------------------===// 12 //===----------------------------------------------------------------------===//
13 13
14 #include "llvm/IR/Function.h" 14 #include "llvm/IR/Function.h"
15 #include "llvm/IR/Module.h"
15 #include "llvm/CodeGen/MachineFrameInfo.h" 16 #include "llvm/CodeGen/MachineFrameInfo.h"
16 #include "llvm/CodeGen/MachineFunction.h" 17 #include "llvm/CodeGen/MachineFunction.h"
18 #include "llvm/Target/TargetFrameLowering.h"
17 #include "llvm/Target/TargetOptions.h" 19 #include "llvm/Target/TargetOptions.h"
20 #include "llvm/Target/TargetSubtargetInfo.h"
18 using namespace llvm; 21 using namespace llvm;
19 22
20 /// DisableFramePointerElim - This returns true if frame pointer elimination 23 /// DisableFramePointerElim - This returns true if frame pointer elimination
21 /// optimization should be disabled for the given machine function. 24 /// optimization should be disabled for the given machine function.
22 bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const { 25 bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
23 // Check to see if we should eliminate non-leaf frame pointers and then 26 // Check to see if we should eliminate all frame pointers.
24 // check to see if we should eliminate all frame pointers. 27 if (MF.getSubtarget().getFrameLowering()->noFramePointerElim(MF))
25 if (MF.getFunction()->hasFnAttribute("no-frame-pointer-elim-non-leaf") && 28 return true;
26 !NoFramePointerElim) {
27 const MachineFrameInfo *MFI = MF.getFrameInfo();
28 return MFI->hasCalls();
29 }
30 29
31 return NoFramePointerElim; 30 // Check to see if we should eliminate non-leaf frame pointers.
31 if (MF.getFunction()->hasFnAttribute("no-frame-pointer-elim-non-leaf"))
32 return MF.getFrameInfo()->hasCalls();
33
34 return false;
32 } 35 }
33 36
34 /// LessPreciseFPMAD - This flag return true when -enable-fp-mad option 37 /// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
35 /// is specified on the command line. When this flag is off(default), the 38 /// is specified on the command line. When this flag is off(default), the
36 /// code generator is not allowed to generate mad (multiply add) if the 39 /// code generator is not allowed to generate mad (multiply add) if the
42 /// HonorSignDependentRoundingFPMath - Return true if the codegen must assume 45 /// HonorSignDependentRoundingFPMath - Return true if the codegen must assume
43 /// that the rounding mode of the FPU can change from its default. 46 /// that the rounding mode of the FPU can change from its default.
44 bool TargetOptions::HonorSignDependentRoundingFPMath() const { 47 bool TargetOptions::HonorSignDependentRoundingFPMath() const {
45 return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption; 48 return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption;
46 } 49 }
47
48 /// getTrapFunctionName - If this returns a non-empty string, this means isel
49 /// should lower Intrinsic::trap to a call to the specified function name
50 /// instead of an ISD::TRAP node.
51 StringRef TargetOptions::getTrapFunctionName() const {
52 return TrapFuncName;
53 }
54
55 /// getCFIFuncName - If this returns a non-empty string, then it is the name of
56 /// the function that gets called on CFI violations in CFI non-enforcing mode
57 /// (!TargetOptions::CFIEnforcing).
58 StringRef TargetOptions::getCFIFuncName() const {
59 return CFIFuncName;
60 }