diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
-rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index a3b3223611..57282d471f 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -427,6 +427,16 @@ bool X86InstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, return false; } + // If the block ends with two X86::JMPs, handle it. The second one is not + // executed, so remove it. + if (SecondLastInst->getOpcode() == X86::JMP && + LastInst->getOpcode() == X86::JMP) { + TBB = SecondLastInst->getOperand(0).getMachineBasicBlock(); + I = LastInst; + I->eraseFromParent(); + return false; + } + // Otherwise, can't handle this. return true; } |