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
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp
index fa3785d..aa6e2b4 100644
--- a/lib/CodeGen/TailDuplication.cpp
+++ b/lib/CodeGen/TailDuplication.cpp
@@ -495,7 +495,7 @@
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,