[llvm] [InstSimplify] Optimize maximumnum and minimumnum (PR #139581)

[Lewis Crawford via llvm-commits]

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@@ -521,115 +785,99 @@ define <2 x double> @minnum_nan_op1_vec(<2 x double> %x) {
   ret <2 x double> %r
 }
 
-define float @maxnum_undef_op1(float %x) {
-; CHECK-LABEL: @maxnum_undef_op1(
-; CHECK-NEXT:    ret float [[X:%.*]]
-;
-  %val = call float @llvm.maxnum.f32(float %x, float undef)
-  ret float %val
-}
-
-define float @maxnum_poison_op1(float %x) {
-; CHECK-LABEL: @maxnum_poison_op1(
-; CHECK-NEXT:    ret float [[X:%.*]]
-;
-  %val = call float @llvm.maxnum.f32(float %x, float poison)
-  ret float %val
-}
-
-define float @maxnum_undef_op0(float %x) {
-; CHECK-LABEL: @maxnum_undef_op0(
-; CHECK-NEXT:    ret float [[X:%.*]]
+define double @maxnum_snan_op0(double %x) {
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LewisCrawford wrote:

I've un-deleted the undef tests for maxnum/maximum now. I'll just not add any new undef tests for maximumnum (even thought that means the list of tests is slightly inconsistent between the 3 types of intrinsic).

https://github.com/llvm/llvm-project/pull/139581