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[LAA] Remove one addRuntimeChecks function (NFC).

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In order to reduce the API surface area (preparation for D78460), remove
a addRuntimeChecks() function and do the additional check in the single
caller.

Reviewers: Ayal, anemet

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D79679
This commit is contained in:
Florian Hahn 2020-05-10 12:26:33 +01:00
parent b3c5529405
commit 08756fc67b
3 changed files with 9 additions and 21 deletions
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11
include/llvm/Analysis/LoopAccessAnalysis.h
View File

@ -541,15 +541,8 @@ public:
unsigned getNumStores() const { return NumStores; }
unsigned getNumLoads() const { return NumLoads;}
/// Add code that checks at runtime if the accessed arrays overlap.
///
/// Returns a pair of instructions where the first element is the first
/// instruction generated in possibly a sequence of instructions and the
/// second value is the final comparator value or NULL if no check is needed.
std::pair<Instruction *, Instruction *>
addRuntimeChecks(Instruction *Loc) const;
/// Generete the instructions for the checks in \p PointerChecks.
/// Add code that checks at runtime if the accessed arrays \in p PointerChecks
/// overlap.
///
/// Returns a pair of instructions where the first element is the first
/// instruction generated in possibly a sequence of instructions and the

8
lib/Analysis/LoopAccessAnalysis.cpp
View File

@ -2275,14 +2275,6 @@ std::pair<Instruction *, Instruction *> LoopAccessInfo::addRuntimeChecks(
return std::make_pair(FirstInst, Check);
}
std::pair<Instruction *, Instruction *>
LoopAccessInfo::addRuntimeChecks(Instruction *Loc) const {
if (!PtrRtChecking->Need)
return std::make_pair(nullptr, nullptr);
return addRuntimeChecks(Loc, PtrRtChecking->getChecks());
}
void LoopAccessInfo::collectStridedAccess(Value *MemAccess) {
Value *Ptr = nullptr;
if (LoadInst *LI = dyn_cast<LoadInst>(MemAccess))

11
lib/Transforms/Vectorize/LoopVectorize.cpp
View File

@ -2785,12 +2785,15 @@ void InnerLoopVectorizer::emitMemRuntimeChecks(Loop *L, BasicBlock *Bypass) {
// Generate the code that checks in runtime if arrays overlap. We put the
// checks into a separate block to make the more common case of few elements
// faster.
auto *LAI = Legal->getLAI();
const auto &RtPtrChecking = *LAI->getRuntimePointerChecking();
if (!RtPtrChecking.Need)
return;
Instruction *FirstCheckInst;
Instruction *MemRuntimeCheck;
std::tie(FirstCheckInst, MemRuntimeCheck) =
Legal->getLAI()->addRuntimeChecks(MemCheckBlock->getTerminator());
if (!MemRuntimeCheck)
return;
std::tie(FirstCheckInst, MemRuntimeCheck) = LAI->addRuntimeChecks(
MemCheckBlock->getTerminator(), RtPtrChecking.getChecks());
assert(MemRuntimeCheck && "Expected runtime checks to be generated");
if (MemCheckBlock->getParent()->hasOptSize()) {
assert(Cost->Hints->getForce() == LoopVectorizeHints::FK_Enabled &&