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

[Jay Foad 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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jayfoad wrote:

Splitting the tests into separate files seems unnecessary to me, and it won't reduce the overall number of RUN lines, which is probably the dominant factor in testing time here.

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