[llvm] [InstCombine] Propogate disjoint flags during shl-binop transform (PR #91333)

[Yingwei Zheng via llvm-commits]

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@@ -1259,6 +1266,50 @@ Instruction *InstCombinerImpl::visitLShr(BinaryOperator &I) {
       match(Op1, m_SpecificIntAllowPoison(BitWidth - 1)))
     return new ZExtInst(Builder.CreateIsNotNeg(X, "isnotneg"), Ty);
 
+  Value *Y;
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dtcxzyw wrote:

Please drop changes from https://github.com/llvm/llvm-project/pull/88193

https://github.com/llvm/llvm-project/pull/91333