[llvm] [LV][NFC] Emit remarks when failing to vectorise early exit loops (PR #225078)

[David Sherwood via llvm-commits]

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@@ -3272,8 +3315,13 @@ static bool handleUncountableExitsWithSideEffects(
     for (VPRecipeBase &R : *VPBB)
       if (R.mayReadOrWriteMemory() && &R != Load) {
         // TODO: Handle conditional memory operations in the loop.
-        if (!VPDT.dominates(R.getParent(), LatchVPBB))
+        if (!VPDT.dominates(R.getParent(), LatchVPBB)) {
+          reportVectorizationFailure(
+              "Early exit loop with side effects "
+              "contains unsupported memory operations.\n",
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david-arm wrote:

Done!

https://github.com/llvm/llvm-project/pull/225078