[llvm] [LLVM] Slay undead copysign code (PR #111269)

[via llvm-commits]

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@@ -91,8 +92,9 @@ define ppc_fp128 @foo_ld(double %a, double %b) #0 {
 ; CHECK-VSX-NEXT:    fmr 0, 1
 ; CHECK-VSX-NEXT:    xscpsgndp 1, 2, 1
 ; CHECK-VSX-NEXT:    xxlxor 2, 2, 2
-; CHECK-VSX-NEXT:    xscmpudp 0, 0, 1
-; CHECK-VSX-NEXT:    beqlr 0
+; CHECK-VSX-NEXT:    fcmpu 0, 0, 1
+; CHECK-VSX-NEXT:    cror 20, 2, 3
+; CHECK-VSX-NEXT:    bclr 12, 20, 0
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workingjubilee wrote:

@arsenm I redid the test updates using the automatic generator so that it would be easier to see the diff in the `SETUEQ` change.

This... doesn't feel like a win? I mean maybe I'm wildly off base and this is fine, but...?

https://github.com/llvm/llvm-project/pull/111269