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[SLP] clean up - use 'const' and ArrayRef constructor; NFC 

Follow-on tidying suggested in the post-commit review of 6a23668.
This commit is contained in:
Sanjay Patel 2020-09-24 15:11:27 -04:00
parent 89aad892a5
commit 0a349d5827
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -6853,7 +6853,7 @@ public:
BoUpSLP::ExtraValueToDebugLocsMap ExternallyUsedValues;
// The same extra argument may be used several times, so log each attempt
// to use it.
for (std::pair<Instruction *, Value *> &Pair : ExtraArgs) {
for (const std::pair<Instruction *, Value *> &Pair : ExtraArgs) {
assert(Pair.first && "DebugLoc must be set.");
ExternallyUsedValues[Pair.second].push_back(Pair.first);
}
@ -6908,7 +6908,7 @@ public:
Value *VectorizedTree = nullptr;
unsigned i = 0;
while (i < NumReducedVals - ReduxWidth + 1 && ReduxWidth > 2) {
ArrayRef<Value *> VL = makeArrayRef(&ReducedVals[i], ReduxWidth);
ArrayRef<Value *> VL(&ReducedVals[i], ReduxWidth);
V.buildTree(VL, ExternallyUsedValues, IgnoreList);
Optional<ArrayRef<unsigned>> Order = V.bestOrder();
if (Order) {
@ -7664,7 +7664,7 @@ bool SLPVectorizerPass::vectorizeGEPIndices(BasicBlock *BB, BoUpSLP &R) {
unsigned MaxElts = MaxVecRegSize / EltSize;
for (unsigned BI = 0, BE = Entry.second.size(); BI < BE; BI += MaxElts) {
auto Len = std::min<unsigned>(BE - BI, MaxElts);
auto GEPList = makeArrayRef(&Entry.second[BI], Len);
ArrayRef<GetElementPtrInst *> GEPList(&Entry.second[BI], Len);
// Initialize a set a candidate getelementptrs. Note that we use a
// SetVector here to preserve program order. If the index computations