[llvm] be06985 - [InstCombine] remove shl(neg x), y transform

[Sanjay Patel via llvm-commits]

Author: Sanjay Patel
Date: 2021-08-12T11:27:22-04:00
New Revision: be0698559b20ae75b1dd91f515000bffe5b7f35a

URL: https://github.com/llvm/llvm-project/commit/be0698559b20ae75b1dd91f515000bffe5b7f35a
DIFF: https://github.com/llvm/llvm-project/commit/be0698559b20ae75b1dd91f515000bffe5b7f35a.diff

LOG: [InstCombine] remove shl(neg x), y transform

This diff was accidentally committed with:
1b5a195845e1

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp b/llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp
index ff94f39dc690..01f8e60db7e7 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp
@@ -1007,9 +1007,6 @@ Instruction *InstCombinerImpl::visitShl(BinaryOperator &I) {
     return BinaryOperator::CreateAnd(Mask, X);
   }
 
-  if (match(Op0, m_OneUse(m_Neg(m_Value(X)))))
-    return BinaryOperator::CreateNeg(Builder.CreateShl(X, Op1));
-
   Constant *C1;
   if (match(Op1, m_Constant(C1))) {
     Constant *C2;