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[DA] Remove base pointers from subscripts (NFCI) #157083

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Merged
merged 2 commits into from
Sep 16, 2025
Merged

[DA] Remove base pointers from subscripts (NFCI) #157083

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9693deb
[DA] Remove base pointers from subscripts
kasuga-fj Sep 5, 2025
96bab78
Merge branch 'main' into users/kasuga-fj/da-fix-exact-siv-ovfl-0
kasuga-fj Sep 16, 2025
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12 changes: 8 additions & 4 deletions llvm/lib/Analysis/DependenceAnalysis.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3698,8 +3698,8 @@ DependenceInfo::depends(Instruction *Src, Instruction *Dst,

unsigned Pairs = 1;
SmallVector<Subscript, 2> Pair(Pairs);
Pair[0].Src = SrcSCEV;
Pair[0].Dst = DstSCEV;
Pair[0].Src = SrcEv;
Pair[0].Dst = DstEv;

if (Delinearize) {
if (tryDelinearize(Src, Dst, Pair)) {
Expand All @@ -3709,6 +3709,8 @@ DependenceInfo::depends(Instruction *Src, Instruction *Dst,
}

for (unsigned P = 0; P < Pairs; ++P) {
assert(Pair[P].Src->getType()->isIntegerTy() && "Src must be an integer");
assert(Pair[P].Dst->getType()->isIntegerTy() && "Dst must be an integer");
Pair[P].Loops.resize(MaxLevels + 1);
Pair[P].GroupLoops.resize(MaxLevels + 1);
Pair[P].Group.resize(Pairs);
Expand Down Expand Up @@ -4111,8 +4113,8 @@ const SCEV *DependenceInfo::getSplitIteration(const Dependence &Dep,
SmallVector<Subscript, 2> Pair(Pairs);
const SCEV *SrcSCEV = SE->getSCEV(SrcPtr);
const SCEV *DstSCEV = SE->getSCEV(DstPtr);
Pair[0].Src = SrcSCEV;
Pair[0].Dst = DstSCEV;
Pair[0].Src = SE->removePointerBase(SrcSCEV);
Pair[0].Dst = SE->removePointerBase(DstSCEV);

if (Delinearize) {
if (tryDelinearize(Src, Dst, Pair)) {
Expand All @@ -4122,6 +4124,8 @@ const SCEV *DependenceInfo::getSplitIteration(const Dependence &Dep,
}

for (unsigned P = 0; P < Pairs; ++P) {
assert(Pair[P].Src->getType()->isIntegerTy() && "Src must be an integer");
assert(Pair[P].Dst->getType()->isIntegerTy() && "Dst must be an integer");
Pair[P].Loops.resize(MaxLevels + 1);
Pair[P].GroupLoops.resize(MaxLevels + 1);
Pair[P].Group.resize(Pairs);
Expand Down