[llvm] [InstCombine] Remove some of the complexity-based canonicalization (PR #91185)

[via llvm-commits]

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@@ -31,7 +31,7 @@ define i32 @test1(i32 %a0) {
 ; CHECK-LABEL: @test1(
 ; CHECK-NEXT:    [[TMP1:%.*]] = lshr i32 [[A0:%.*]], 1
 ; CHECK-NEXT:    [[TMP2:%.*]] = and i32 [[TMP1]], 1431655765
-; CHECK-NEXT:    [[TMP3:%.*]] = sub nsw i32 [[A0]], [[TMP2]]
+; CHECK-NEXT:    [[TMP3:%.*]] = sub i32 [[A0]], [[TMP2]]
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goldsteinn wrote:

regression + below

https://github.com/llvm/llvm-project/pull/91185