[llvm] [LV] Teach LoopVectorizationLegality about struct vector calls (PR #119221)

[David Sherwood via llvm-commits]

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@@ -10258,6 +10258,15 @@ bool LoopVectorizePass::processLoop(Loop *L) {
     }
   }
 
+  if (LVL.hasStructVectorCall()) {
+    constexpr StringLiteral FailureMessage(
+        "Auto-vectorization of calls that return struct types is not yet "
+        "supported");
+    reportVectorizationFailure(FailureMessage, FailureMessage,
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david-arm wrote:

nit: We now have a variant of `reportVectorizationFailure` that takes a single `FailureMessage` argument if it's duplicated. Could you use that here as well please?

https://github.com/llvm/llvm-project/pull/119221