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Handle blocks with 2 unconditional branches in AnalyzeBranch.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37571 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-06-13 17:59:52 +00:00
parent ea632439d4
commit 13e8b51e3e
4 changed files with 40 additions and 0 deletions
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10
lib/Target/PowerPC/PPCInstrInfo.cpp
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@ -220,6 +220,16 @@ bool PPCInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB,
return false;
}
// If the block ends with two PPC:Bs, handle it. The second one is not
// executed, so remove it.
if (SecondLastInst->getOpcode() == PPC::B &&
LastInst->getOpcode() == PPC::B) {
TBB = SecondLastInst->getOperand(0).getMachineBasicBlock();
I = LastInst;
I->eraseFromParent();
return false;
}
// Otherwise, can't handle this.
return true;
}