[llvm] [InstCombine] Fold ((X << nuw Z) binop nuw Y) >>u Z --> X binop nuw (Y >>u Z) (PR #88193)

[Yingwei Zheng via llvm-commits]

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@@ -360,8 +371,187 @@ define <3 x i14> @mul_splat_fold_vec(<3 x i14> %x) {
   ret <3 x i14> %t
 }
 
+define i32 @shl_add_lshr_flag_preservation(i32 %x, i32 %c, i32 %y) {
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dtcxzyw wrote:

Missing test for `add` without nuw flag.


https://github.com/llvm/llvm-project/pull/88193