[llvm] [InstSimplify] Fold the rest of trivially vectorizable intrinsics (PR #149243)

[Matt Arsenault via llvm-commits]

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@@ -5213,121 +5213,15 @@ define float @v_exp_f32_dynamic_mode(float %in) #1 {
 }
 
 define float @v_exp_f32_undef() {
-; VI-SDAG-LABEL: v_exp_f32_undef:
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arsenm wrote:

The point of these is to make sure they codegen without machine verifier errors, so this defeats the point. I don't really have a good suggestion for how to preserve the test intent 

https://github.com/llvm/llvm-project/pull/149243