[llvm] [X86] Lower `minimum`/`maximum`/`minimumnum`/`maximumnum` using bitwise operations (PR #170069)

[Phoebe Wang via llvm-commits]

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@@ -369,28 +319,29 @@ define double @test_fmaximumnum_zero2(double %x, double %y) {
 define float @test_fmaximumnum_nsz(float %x, float %y) "no-signed-zeros-fp-math"="true" nounwind {
 ; SSE2-LABEL: test_fmaximumnum_nsz:
 ; SSE2:       # %bb.0:
-; SSE2-NEXT:    movaps %xmm0, %xmm2
-; SSE2-NEXT:    maxss %xmm1, %xmm2
-; SSE2-NEXT:    movaps %xmm2, %xmm1
-; SSE2-NEXT:    cmpunordss %xmm2, %xmm1
-; SSE2-NEXT:    andps %xmm1, %xmm0
-; SSE2-NEXT:    andnps %xmm2, %xmm1
-; SSE2-NEXT:    orps %xmm1, %xmm0
+; SSE2-NEXT:    movaps %xmm1, %xmm2
+; SSE2-NEXT:    cmpunordss %xmm1, %xmm2
+; SSE2-NEXT:    movaps %xmm2, %xmm3
+; SSE2-NEXT:    andps %xmm0, %xmm3
+; SSE2-NEXT:    maxss %xmm1, %xmm0
+; SSE2-NEXT:    andnps %xmm0, %xmm2
+; SSE2-NEXT:    orps %xmm3, %xmm2
+; SSE2-NEXT:    movaps %xmm2, %xmm0
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phoebewang wrote:

One more instruction here.

https://github.com/llvm/llvm-project/pull/170069