diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86InstrInfo.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.h b/llvm/lib/Target/X86/X86InstrInfo.h index bfaa76d49f9..d18e93ad39a 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.h +++ b/llvm/lib/Target/X86/X86InstrInfo.h @@ -452,7 +452,10 @@ public: /// conservative. If it cannot definitely determine the safety after visiting /// a few instructions in each direction it assumes it's not safe. bool isSafeToClobberEFLAGS(MachineBasicBlock &MBB, - MachineBasicBlock::iterator I) const; + MachineBasicBlock::iterator I) const { + return MBB.computeRegisterLiveness(&RI, X86::EFLAGS, I, 4) == + MachineBasicBlock::LQR_Dead; + } /// True if MI has a condition code def, e.g. EFLAGS, that is /// not marked dead. |
