1 files changed, 7 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index ab0e72960dd..f0a07eddc3b 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -6017,8 +6017,14 @@ LoopVectorizationPlanner::plan(bool OptForSize, unsigned UserVF) {
     return NoVectorization;
 
   // Invalidate interleave groups if all blocks of loop will be predicated.
-  if (CM.blockNeedsPredication(OrigLoop->getHeader()))
+  if (CM.blockNeedsPredication(OrigLoop->getHeader()) &&
+      !useMaskedInterleavedAccesses(*TTI)) {
+    LLVM_DEBUG(
+        dbgs()
+        << "LV: Invalidate all interleaved groups due to fold-tail by masking "
+           "which requires masked-interleaved support.\n");
     CM.InterleaveInfo.reset();
+  }
 
   if (UserVF) {
     LLVM_DEBUG(dbgs() << "LV: Using user VF " << UserVF << ".\n");