[llvm] [Scalarizer] Ensure valid VectorSplits for each struct element in `visitExtractValueInst` (PR #128538)

[Farzon Lotfi via llvm-commits]

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@@ -1081,6 +1081,17 @@ define <4 x half> @call_v4f16(<4 x half> %a, <4 x half> %b) {
   ret <4 x half> %r
 }
 
+define <3 x i32> @call_v3i32(<3 x i32> %a, <3 x i32> %b) {
+; CHECK-LABEL: @call_v3i32(
+; CHECK-NEXT:    [[T:%.*]] = call { <3 x i32>, <3 x i1> } @llvm.uadd.with.overflow.v3i32(<3 x i32> [[A:%.*]], <3 x i32> [[B:%.*]])
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farzonl wrote:

This might be a future cleanup, but if `16` and `32` make no difference for `frexp` and `64` make no difference for the other test cases similar to `*_with_overflow`  should `frexp` be in its own test file with other float intrinsics? No is a reasonable answer. I'm just curious if we are adding useless tests.

https://github.com/llvm/llvm-project/pull/128538