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Ignore debug value instructions while analyzing BB for tail duplication.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98675 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -495,7 +495,7 @@ TailDuplicatePass::TailDuplicate(MachineBasicBlock *TailBB, MachineFunction &MF,
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if (InstrCount == MaxDuplicateCount) return false;
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// Remember if we saw a call.
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if (I->getDesc().isCall()) HasCall = true;
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if (!I->isPHI())
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if (!I->isPHI() && !I->isDebugValue())
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InstrCount += 1;
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}
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// Heuristically, don't tail-duplicate calls if it would expand code size,
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