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LazyValueInfo: range'ify some for-loops. No functional change.

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llvm-svn: 222557
This commit is contained in:
Hans Wennborg 2014-11-21 19:07:46 +00:00
parent f10986a833
commit ffb28ee503
1 changed files with 19 additions and 34 deletions
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53
lib/Analysis/LazyValueInfo.cpp
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@ -439,17 +439,11 @@ void LVIValueHandle::deleted() {
typedef std::pair<AssertingVH<BasicBlock>, Value*> OverDefinedPairTy;
SmallVector<OverDefinedPairTy, 4> ToErase;
for (DenseSet<OverDefinedPairTy>::iterator
I = Parent->OverDefinedCache.begin(),
E = Parent->OverDefinedCache.end();
I != E; ++I) {
if (I->second == getValPtr())
ToErase.push_back(*I);
}
for (SmallVectorImpl<OverDefinedPairTy>::iterator I = ToErase.begin(),
E = ToErase.end(); I != E; ++I)
Parent->OverDefinedCache.erase(*I);
for (const OverDefinedPairTy &P : Parent->OverDefinedCache)
if (P.second == getValPtr())
ToErase.push_back(P);
for (const OverDefinedPairTy &P : ToErase)
Parent->OverDefinedCache.erase(P);
// This erasure deallocates *this, so it MUST happen after we're done
// using any and all members of *this.
@ -464,15 +458,11 @@ void LazyValueInfoCache::eraseBlock(BasicBlock *BB) {
SeenBlocks.erase(I);
SmallVector<OverDefinedPairTy, 4> ToErase;
for (DenseSet<OverDefinedPairTy>::iterator I = OverDefinedCache.begin(),
E = OverDefinedCache.end(); I != E; ++I) {
if (I->first == BB)
ToErase.push_back(*I);
}
for (SmallVectorImpl<OverDefinedPairTy>::iterator I = ToErase.begin(),
E = ToErase.end(); I != E; ++I)
OverDefinedCache.erase(*I);
for (const OverDefinedPairTy& P : OverDefinedCache)
if (P.first == BB)
ToErase.push_back(P);
for (const OverDefinedPairTy &P : ToErase)
OverDefinedCache.erase(P);
for (std::map<LVIValueHandle, ValueCacheEntryTy>::iterator
I = ValueCache.begin(), E = ValueCache.end(); I != E; ++I)
@ -620,9 +610,8 @@ bool LazyValueInfoCache::solveBlockValueNonLocal(LVILatticeVal &BBLV,
// If 'GetUnderlyingObject' didn't converge, skip it. It won't converge
// inside InstructionDereferencesPointer either.
if (UnderlyingVal == GetUnderlyingObject(UnderlyingVal, nullptr, 1)) {
for (BasicBlock::iterator BI = BB->begin(), BE = BB->end();
BI != BE; ++BI) {
if (InstructionDereferencesPointer(BI, UnderlyingVal)) {
for (Instruction &I : *BB) {
if (InstructionDereferencesPointer(&I, UnderlyingVal)) {
NotNull = true;
break;
}
@ -915,8 +904,7 @@ static bool getEdgeValueLocal(Value *Val, BasicBlock *BBFrom,
unsigned BitWidth = Val->getType()->getIntegerBitWidth();
ConstantRange EdgesVals(BitWidth, DefaultCase/*isFullSet*/);
for (SwitchInst::CaseIt i = SI->case_begin(), e = SI->case_end();
i != e; ++i) {
for (SwitchInst::CaseIt i : SI->cases()) {
ConstantRange EdgeVal(i.getCaseValue()->getValue());
if (DefaultCase) {
// It is possible that the default destination is the destination of
@ -1050,11 +1038,9 @@ void LazyValueInfoCache::threadEdge(BasicBlock *PredBB, BasicBlock *OldSucc,
worklist.push_back(OldSucc);
DenseSet<Value*> ClearSet;
for (DenseSet<OverDefinedPairTy>::iterator I = OverDefinedCache.begin(),
E = OverDefinedCache.end(); I != E; ++I) {
if (I->first == OldSucc)
ClearSet.insert(I->second);
}
for (OverDefinedPairTy &P : OverDefinedCache)
if (P.first == OldSucc)
ClearSet.insert(P.second);
// Use a worklist to perform a depth-first search of OldSucc's successors.
// NOTE: We do not need a visited list since any blocks we have already
@ -1068,15 +1054,14 @@ void LazyValueInfoCache::threadEdge(BasicBlock *PredBB, BasicBlock *OldSucc,
if (ToUpdate == NewSucc) continue;
bool changed = false;
for (DenseSet<Value*>::iterator I = ClearSet.begin(), E = ClearSet.end();
I != E; ++I) {
for (Value *V : ClearSet) {
// If a value was marked overdefined in OldSucc, and is here too...
DenseSet<OverDefinedPairTy>::iterator OI =
OverDefinedCache.find(std::make_pair(ToUpdate, *I));
OverDefinedCache.find(std::make_pair(ToUpdate, V));
if (OI == OverDefinedCache.end()) continue;
// Remove it from the caches.
ValueCacheEntryTy &Entry = ValueCache[LVIValueHandle(*I, this)];
ValueCacheEntryTy &Entry = ValueCache[LVIValueHandle(V, this)];
ValueCacheEntryTy::iterator CI = Entry.find(ToUpdate);
assert(CI != Entry.end() && "Couldn't find entry to update?");