[llvm] [LoopVectorize] Add metadata to distinguish vectorized loop body from scalar remainder (PR #190258)

[Matt Arsenault via llvm-commits]

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@@ -25,13 +25,25 @@ static void warnAboutLeftoverTransformations(Loop *L,
                                              OptimizationRemarkEmitter *ORE) {
   if (hasUnrollTransformation(L) == TM_ForcedByUser) {
     LLVM_DEBUG(dbgs() << "Leftover unroll transformation\n");
+    bool IsVectorBody =
+        getBooleanLoopAttribute(L, "llvm.loop.vectorize.vector_body");
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arsenm wrote:

Why do these mix . and _ as the word separator 

https://github.com/llvm/llvm-project/pull/190258