[llvm] [ConstantFolding] Fold maximumnum and minimumnum (PR #138700)

[Lewis Crawford via llvm-commits]

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@@ -538,6 +540,38 @@ define <2 x double> @frem_undef_op0_constant_vec(<2 x double> %x) {
   ret <2 x double> %r
 }
 
+define <2 x double> @maximumnum_nan_op0_vec_partial_undef_op1_undef(<2 x double> %x) {
+; CHECK-LABEL: @maximumnum_nan_op0_vec_partial_undef_op1_undef(
+; CHECK-NEXT:    ret <2 x double> <double 0x7FF8000000000000, double undef>
+;
+  %r = call <2 x double> @llvm.maximumnum.v2f64(<2 x double> <double 0x7ff8000000000000, double undef>, <2 x double> undef)
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LewisCrawford wrote:

Done.

https://github.com/llvm/llvm-project/pull/138700