[llvm] 8b7bbed - [LV] Re-add early exit in VPRecipeBuilder::createBlockInMask.

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2024-01-10T15:02:14Z
New Revision: 8b7bbedec7bcfbeaee4ab9b74471cbbbc8633e1a

URL: https://github.com/llvm/llvm-project/commit/8b7bbedec7bcfbeaee4ab9b74471cbbbc8633e1a
DIFF: https://github.com/llvm/llvm-project/commit/8b7bbedec7bcfbeaee4ab9b74471cbbbc8633e1a.diff

LOG: [LV] Re-add early exit in VPRecipeBuilder::createBlockInMask.

Re-add early exit that was accidentally dropped in  51afb10.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 51ce88480c0880..1a5b9dbb82fa04 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -8031,6 +8031,7 @@ void VPRecipeBuilder::createBlockInMask(BasicBlock *BB, VPlan &Plan) {
     VPValue *EdgeMask = createEdgeMask(Predecessor, BB, Plan);
     if (!EdgeMask) { // Mask of predecessor is all-one so mask of block is too.
       BlockMaskCache[BB] = EdgeMask;
+      return;
     }
 
     if (!BlockMask) { // BlockMask has its initialized nullptr value.