[llvm] 50a3e87 - Revert "[InstCombine] Erase old instruction when replacing extractelements"

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2020-04-01T20:10:11+02:00
New Revision: 50a3e8738a90cfd4915b24c33782cf6a87216b78

URL: https://github.com/llvm/llvm-project/commit/50a3e8738a90cfd4915b24c33782cf6a87216b78
DIFF: https://github.com/llvm/llvm-project/commit/50a3e8738a90cfd4915b24c33782cf6a87216b78.diff

LOG: Revert "[InstCombine] Erase old instruction when replacing extractelements"

This reverts commit d40368fdb5e1b90e68b1078f32c283aa800238be.

llvm-clang-x86_64-expensive-checks-debian failure looks related.

Added: 
    

Modified: 
    llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index 1f7279fb9299..2d72696ee531 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -597,7 +597,6 @@ static void replaceExtractElements(InsertElementInst *InsElt,
     auto *NewExt = ExtractElementInst::Create(WideVec, OldExt->getOperand(1));
     NewExt->insertAfter(OldExt);
     IC.replaceInstUsesWith(*OldExt, NewExt);
-    IC.eraseInstFromFunction(*OldExt);
   }
 }