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Make the logic for checking scatter vectorized nodes of GEP clearer #97826

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Merged
merged 1 commit into from
Jul 8, 2024
Merged

Make the logic for checking scatter vectorized nodes of GEP clearer #97826

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11 changes: 5 additions & 6 deletions llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6725,9 +6725,9 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
bool IsScatterVectorizeUserTE =
UserTreeIdx.UserTE &&
UserTreeIdx.UserTE->State == TreeEntry::ScatterVectorize;
bool AreAllSameInsts =
(S.getOpcode() && allSameBlock(VL)) ||
(S.OpValue->getType()->isPointerTy() && IsScatterVectorizeUserTE &&
bool AreAllSameBlock = S.getOpcode() && allSameBlock(VL);
bool AreScatterAllGEPSameBlock =
(IsScatterVectorizeUserTE && S.OpValue->getType()->isPointerTy() &&
VL.size() > 2 &&
all_of(VL,
[&BB](Value *V) {
Expand All @@ -6741,6 +6741,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
BB &&
sortPtrAccesses(VL, UserTreeIdx.UserTE->getMainOp()->getType(), *DL, *SE,
SortedIndices));
bool AreAllSameInsts = AreAllSameBlock || AreScatterAllGEPSameBlock;
if (!AreAllSameInsts || allConstant(VL) || isSplat(VL) ||
(isa<InsertElementInst, ExtractValueInst, ExtractElementInst>(
S.OpValue) &&
Expand Down Expand Up @@ -6820,9 +6821,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,

// Special processing for sorted pointers for ScatterVectorize node with
// constant indeces only.
if (AreAllSameInsts && UserTreeIdx.UserTE &&
UserTreeIdx.UserTE->State == TreeEntry::ScatterVectorize &&
!(S.getOpcode() && allSameBlock(VL))) {
if (!AreAllSameBlock && AreScatterAllGEPSameBlock) {
assert(S.OpValue->getType()->isPointerTy() &&
count_if(VL, IsaPred<GetElementPtrInst>) >= 2 &&
"Expected pointers only.");
Expand Down
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