[llvm] [GlobalIsel] Combine logic of icmps (PR #77855)

[Amara Emerson via llvm-commits]

Thorsten =?utf-8?q?Schütt?= <schuett at gmail.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/77855 at github.com>


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@@ -635,19 +635,7 @@ define i64 @select_noccmp1(i64 %v1, i64 %v2, i64 %v3, i64 %r) {
 ;
 ; GISEL-LABEL: select_noccmp1:
 ; GISEL:       ; %bb.0:
-; GISEL-NEXT:    cmp x0, #0
-; GISEL-NEXT:    cset w8, lt
-; GISEL-NEXT:    cmp x0, #13
-; GISEL-NEXT:    cset w9, gt
-; GISEL-NEXT:    cmp x2, #2
-; GISEL-NEXT:    cset w10, lt
-; GISEL-NEXT:    cmp x2, #4
-; GISEL-NEXT:    cset w11, gt
-; GISEL-NEXT:    and w8, w8, w9
-; GISEL-NEXT:    and w9, w10, w11
-; GISEL-NEXT:    orr w8, w8, w9
-; GISEL-NEXT:    tst w8, #0x1
-; GISEL-NEXT:    csel x0, xzr, x3, ne
+; GISEL-NEXT:    mov x0, x3
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aemerson wrote:

All this simplifies to `%v3`?

https://github.com/llvm/llvm-project/pull/77855