================
@@ -205,36 +205,34 @@ static cl::opt<bool> ForceTargetSupportsMaskedMemoryOps(
cl::desc("Assume the target supports masked memory operations (used for "
"testing)."));
-// Option prefer-predicate-over-epilogue indicates that an epilogue is
undesired,
-// that predication is preferred, and this lists all options. I.e., the
-// vectorizer will try to fold the tail-loop (epilogue) into the vector body
-// and predicate the instructions accordingly. If tail-folding fails, there are
-// different fallback strategies depending on these values:
-namespace PreferPredicateTy {
- enum Option {
- ScalarEpilogue = 0,
- PredicateElseScalarEpilogue,
- PredicateOrDontVectorize
- };
-} // namespace PreferPredicateTy
+// Option prefer-tail-folding indicates that an epilogue is undesired, that
+// tail folding is preferred, and this lists all options. I.e., the vectorizer
+// will try to fold the tail-loop (epilogue) into the vector body and the
+// instructions accordingly. If tail-folding fails, there are different
fallback
+// strategies depending on these values:
+namespace PreferTailFoldingTy {
+enum Option {
+ PreferEpilogue = 0,
----------------
lukel97 wrote:
The PreferEpilogue option guarantees that there will be no tail folding right?
Prefer seems to indicate that it's only a best effort basis. Would a better
term be something like `Epilogue` or `NoFoldTail` .
I agree though that `ScalarEpilogue` is misleading given that it can be
vectorized
https://github.com/llvm/llvm-project/pull/191803
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