[llvm] 074f7c2 - [InstCombine] Remove redundant fold (NFCI)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2024-02-12T09:54:32+01:00
New Revision: 074f7c2235a7d39f59f5c4d85b8fb87d3459b90d

URL: https://github.com/llvm/llvm-project/commit/074f7c2235a7d39f59f5c4d85b8fb87d3459b90d
DIFF: https://github.com/llvm/llvm-project/commit/074f7c2235a7d39f59f5c4d85b8fb87d3459b90d.diff

LOG: [InstCombine] Remove redundant fold (NFCI)

This has been subsumed by simplifyAndOrWithOpReplaced().

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
index a53eb39ad5b0e4..4465eb8992fbbf 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
@@ -3660,19 +3660,6 @@ Instruction *InstCombinerImpl::visitOr(BinaryOperator &I) {
     }
   }
 
-  // A | ~(A | B) -> A | ~B
-  // A | ~(A ^ B) -> A | ~B
-  if (match(Op1, m_Not(m_Value(A))))
-    if (BinaryOperator *B = dyn_cast<BinaryOperator>(A))
-      if ((Op0 == B->getOperand(0) || Op0 == B->getOperand(1)) &&
-          Op1->hasOneUse() && (B->getOpcode() == Instruction::Or ||
-                               B->getOpcode() == Instruction::Xor)) {
-        Value *NotOp = Op0 == B->getOperand(0) ? B->getOperand(1) :
-                                                 B->getOperand(0);
-        Value *Not = Builder.CreateNot(NotOp, NotOp->getName() + ".not");
-        return BinaryOperator::CreateOr(Not, Op0);
-      }
-
   if (SwappedForXor)
     std::swap(Op0, Op1);