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When creating lazy bindings in RegionStore, propagate existing lazy bindings instead of creating new ones. 

This is a functionality optimization.

llvm-svn: 156427
This commit is contained in:
Ted Kremenek 2012-05-08 21:49:51 +00:00
parent 228571b69b
commit b4235b48ca
1 changed files with 19 additions and 1 deletions
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20
clang/lib/StaticAnalyzer/Core/RegionStore.cpp
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@ -1427,12 +1427,30 @@ SVal RegionStoreManager::getBindingForLazySymbol(const TypedValueRegion *R) {
SVal RegionStoreManager::getBindingForStruct(Store store,
const TypedValueRegion* R) {
assert(R->getValueType()->isStructureOrClassType());
// If we already have a lazy binding, don't create a new one.
RegionBindings B = GetRegionBindings(store);
BindingKey K = BindingKey::Make(R, BindingKey::Default);
if (const nonloc::LazyCompoundVal *V =
dyn_cast_or_null<nonloc::LazyCompoundVal>(lookup(B, K))) {
return *V;
}
return svalBuilder.makeLazyCompoundVal(StoreRef(store, *this), R);
}
SVal RegionStoreManager::getBindingForArray(Store store,
SVal RegionStoreManager::getBindingForArray(Store store,
const TypedValueRegion * R) {
assert(Ctx.getAsConstantArrayType(R->getValueType()));
// If we already have a lazy binding, don't create a new one.
RegionBindings B = GetRegionBindings(store);
BindingKey K = BindingKey::Make(R, BindingKey::Default);
if (const nonloc::LazyCompoundVal *V =
dyn_cast_or_null<nonloc::LazyCompoundVal>(lookup(B, K))) {
return *V;
}
return svalBuilder.makeLazyCompoundVal(StoreRef(store, *this), R);
}