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Do not check use_empty() before replaceAllUsesWith(). This gives ValueHandles a chance to get properly updated.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84033 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-10-13 21:41:20 +00:00
parent e5f879825f
commit 1bf5ebc7be
3 changed files with 11 additions and 15 deletions
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3
lib/Transforms/Scalar/LoopUnswitch.cpp
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@@ -781,8 +781,7 @@ void LoopUnswitch::RemoveBlockIfDead(BasicBlock *BB,
// Anything that uses the instructions in this basic block should have their
// uses replaced with undefs.
if (!I->use_empty())
I->replaceAllUsesWith(UndefValue::get(I->getType()));
I->replaceAllUsesWith(UndefValue::get(I->getType()));
}
// If this is the edge to the header block for a loop, remove the loop and