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LoopFlatten - CanWidenIV - Fix uninitialized variable warnings and use for-range loop. NFCI. 

Fix static analysis uninitialized variable warnings, and use for-range loop iteration across WideIVs array.
This commit is contained in:
Simon Pilgrim 2021-04-06 12:24:04 +01:00
parent 2901dc7575
commit b8aba76a4e
1 changed files with 7 additions and 7 deletions
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14
llvm/lib/Transforms/Scalar/LoopFlatten.cpp
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@ -605,21 +605,21 @@ static bool CanWidenIV(FlattenInfo &FI, DominatorTree *DT, LoopInfo *LI,
SmallVector<WeakTrackingVH, 4> DeadInsts;
WideIVs.push_back( {FI.InnerInductionPHI, MaxLegalType, false });
WideIVs.push_back( {FI.OuterInductionPHI, MaxLegalType, false });
unsigned ElimExt;
unsigned Widened;
unsigned ElimExt = 0;
unsigned Widened = 0;
for (unsigned i = 0; i < WideIVs.size(); i++) {
PHINode *WidePhi = createWideIV(WideIVs[i], LI, SE, Rewriter, DT, DeadInsts,
for (const auto &WideIV : WideIVs) {
PHINode *WidePhi = createWideIV(WideIV, LI, SE, Rewriter, DT, DeadInsts,
ElimExt, Widened, true /* HasGuards */,
true /* UsePostIncrementRanges */);
if (!WidePhi)
return false;
LLVM_DEBUG(dbgs() << "Created wide phi: "; WidePhi->dump());
LLVM_DEBUG(dbgs() << "Deleting old phi: "; WideIVs[i].NarrowIV->dump());
RecursivelyDeleteDeadPHINode(WideIVs[i].NarrowIV);
LLVM_DEBUG(dbgs() << "Deleting old phi: "; WideIV.NarrowIV->dump());
RecursivelyDeleteDeadPHINode(WideIV.NarrowIV);
}
// After widening, rediscover all the loop components.
assert(Widened && "Widenend IV expected");
assert(Widened && "Widened IV expected");
FI.Widened = true;
return CanFlattenLoopPair(FI, DT, LI, SE, AC, TTI);
}