================
@@ -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,
----------------
david-arm wrote:
We don't always have an epilogue even when tail-folding. For example, when the
trip count is known to be 1024 it will might be a multiple of all possible VFs
and therefore there won't be a vector or scalar epilogue.
https://github.com/llvm/llvm-project/pull/191803
_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
