Removing a dead debug intrinsic shouldn't trigger
another instcombine pass if we weren't going to make
one without debug info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66576 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 86048e6..2bf87c0 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -12566,12 +12566,15 @@
BasicBlock::iterator I = Term; --I;
DOUT << "IC: DCE: " << *I;
- ++NumDeadInst;
-
+ // A debug intrinsic shouldn't force another iteration if we weren't
+ // going to do one without it.
+ if (!isa<DbgInfoIntrinsic>(I)) {
+ ++NumDeadInst;
+ Changed = true;
+ }
if (!I->use_empty())
I->replaceAllUsesWith(UndefValue::get(I->getType()));
I->eraseFromParent();
- Changed = true;
}
}
}