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

fhahn · fhahn · commit 8b7bbedec7bc · 2024-01-10T15:02:14.000Z
Re-add early exit that was accidentally dropped in 51afb10.
diff --git 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.

Original file line number	Diff line number	Diff line change
`@@ -8031,6 +8031,7 @@ void VPRecipeBuilder::createBlockInMask(BasicBlock *BB, VPlan &Plan) {`
`8031`	`8031`	`VPValue *EdgeMask = createEdgeMask(Predecessor, BB, Plan);`
`8032`	`8032`	`if (!EdgeMask) { // Mask of predecessor is all-one so mask of block is too.`
`8033`	`8033`	`BlockMaskCache[BB] = EdgeMask;`
	`8034`	`+ return;`
`8034`	`8035`	`}`
`8035`	`8036`
`8036`	`8037`	`if (!BlockMask) { // BlockMask has its initialized nullptr value.`