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[LAA] Move logic to compute start and end of a pointer to helper (NFC).

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This allows use at other places, in particular an updated version of
https://github.com/llvm/llvm-project/pull/92307.
This commit is contained in:
Florian Hahn
2024-05-20 19:29:16 +01:00
parent 245491a9f3
commit bce3680f45
1 changed files with 16 additions and 6 deletions
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22
llvm/lib/Analysis/LoopAccessAnalysis.cpp
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@@ -203,11 +203,9 @@ RuntimeCheckingPtrGroup::RuntimeCheckingPtrGroup(
///
/// There is no conflict when the intervals are disjoint:
/// NoConflict = (P2.Start >= P1.End) || (P1.Start >= P2.End)
void RuntimePointerChecking::insert(Loop *Lp, Value *Ptr, const SCEV *PtrExpr,
Type *AccessTy, bool WritePtr,
unsigned DepSetId, unsigned ASId,
PredicatedScalarEvolution &PSE,
bool NeedsFreeze) {
static std::pair<const SCEV *, const SCEV *>
getStartAndEndForAccess(const Loop *Lp, const SCEV *PtrExpr, Type *AccessTy,
PredicatedScalarEvolution &PSE) {
ScalarEvolution *SE = PSE.getSE();
const SCEV *ScStart;
@@ -242,10 +240,22 @@ void RuntimePointerChecking::insert(Loop *Lp, Value *Ptr, const SCEV *PtrExpr,
// Add the size of the pointed element to ScEnd.
auto &DL = Lp->getHeader()->getModule()->getDataLayout();
Type *IdxTy = DL.getIndexType(Ptr->getType());
Type *IdxTy = DL.getIndexType(PtrExpr->getType());
const SCEV *EltSizeSCEV = SE->getStoreSizeOfExpr(IdxTy, AccessTy);
ScEnd = SE->getAddExpr(ScEnd, EltSizeSCEV);
return {ScStart, ScEnd};
}
/// Calculate Start and End points of memory access using
/// getStartAndEndForAccess.
void RuntimePointerChecking::insert(Loop *Lp, Value *Ptr, const SCEV *PtrExpr,
Type *AccessTy, bool WritePtr,
unsigned DepSetId, unsigned ASId,
PredicatedScalarEvolution &PSE,
bool NeedsFreeze) {
const auto &[ScStart, ScEnd] =
getStartAndEndForAccess(Lp, PtrExpr, AccessTy, PSE);
Pointers.emplace_back(Ptr, ScStart, ScEnd, WritePtr, DepSetId, ASId, PtrExpr,
NeedsFreeze);
}