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Ignore debug value instructions while analyzing BB for tail duplication.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98675 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-03-16 21:02:07 +00:00
parent ab7f10705a
commit cbe1e31732
1 changed files with 1 additions and 1 deletions
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lib/CodeGen/TailDuplication.cpp
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@ -495,7 +495,7 @@ TailDuplicatePass::TailDuplicate(MachineBasicBlock *TailBB, MachineFunction &MF,
if (InstrCount == MaxDuplicateCount) return false;
// Remember if we saw a call.
if (I->getDesc().isCall()) HasCall = true;
if (!I->isPHI())
if (!I->isPHI() && !I->isDebugValue())
InstrCount += 1;
}
// Heuristically, don't tail-duplicate calls if it would expand code size,