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Reduce use list thrashing by using DenseMap's find_as for maps with ValueHandle keys.

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No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159497 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2012-06-30 22:37:15 +00:00
parent c1b6ea7b6c
commit 992c25a3fc
2 changed files with 11 additions and 9 deletions
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6
lib/Analysis/AliasSetTracker.cpp
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@ -501,7 +501,7 @@ void AliasSetTracker::deleteValue(Value *PtrVal) {
}
// First, look up the PointerRec for this pointer.
PointerMapType::iterator I = PointerMap.find(PtrVal);
PointerMapType::iterator I = PointerMap.find_as(PtrVal);
if (I == PointerMap.end()) return; // Noop
// If we found one, remove the pointer from the alias set it is in.
@ -527,7 +527,7 @@ void AliasSetTracker::copyValue(Value *From, Value *To) {
AA.copyValue(From, To);
// First, look up the PointerRec for this pointer.
PointerMapType::iterator I = PointerMap.find(From);
PointerMapType::iterator I = PointerMap.find_as(From);
if (I == PointerMap.end())
return; // Noop
assert(I->second->hasAliasSet() && "Dead entry?");
@ -536,7 +536,7 @@ void AliasSetTracker::copyValue(Value *From, Value *To) {
if (Entry.hasAliasSet()) return; // Already in the tracker!
// Add it to the alias set it aliases...
I = PointerMap.find(From);
I = PointerMap.find_as(From);
AliasSet *AS = I->second->getAliasSet(*this);
AS->addPointer(*this, Entry, I->second->getSize(),
I->second->getTBAAInfo(),