[llvm] [InstCombine] simplify average of lsb (PR #95684)

[via llvm-commits]

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@@ -1453,9 +1453,8 @@ define i32 @bool_add_lshr_uses(i1 %a, i1 %b) {
 ; CHECK-NEXT:    call void @use(i32 [[ZEXT_A]])
 ; CHECK-NEXT:    [[ZEXT_B:%.*]] = zext i1 [[B:%.*]] to i32
 ; CHECK-NEXT:    call void @use(i32 [[ZEXT_B]])
-; CHECK-NEXT:    [[TMP1:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    [[LSHR:%.*]] = zext i1 [[TMP1]] to i32
-; CHECK-NEXT:    ret i32 [[LSHR]]
+; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[ZEXT_A]], [[ZEXT_B]]
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c8ef wrote:

Not sure if it's a regression.

https://github.com/llvm/llvm-project/pull/95684