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Cache const/non-const variants of Atomic and ReferenceTypes.

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More reduction of dynamic memory allocation.
This commit is contained in:
Matt Pharr
2012-05-04 13:14:44 -07:00
parent c0019bd8e5
commit bff02017da
2 changed files with 27 additions and 4 deletions
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28
type.cpp
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@@ -185,6 +185,7 @@ const AtomicType *AtomicType::Void =
AtomicType::AtomicType(BasicType bt, Variability v, bool ic)
: Type(ATOMIC_TYPE), basicType(bt), variability(v), isConst(ic) {
asOtherConstType = NULL;
}
@@ -257,7 +258,11 @@ AtomicType::GetAsConstType() const {
if (basicType == TYPE_VOID || isConst == true)
return this;
return new AtomicType(basicType, variability, true);
if (asOtherConstType == NULL) {
asOtherConstType = new AtomicType(basicType, variability, true);
asOtherConstType->asOtherConstType = this;
}
return asOtherConstType;
}
@@ -266,7 +271,11 @@ AtomicType::GetAsNonConstType() const {
if (basicType == TYPE_VOID || isConst == false)
return this;
return new AtomicType(basicType, variability, false);
if (asOtherConstType == NULL) {
asOtherConstType = new AtomicType(basicType, variability, false);
asOtherConstType->asOtherConstType = this;
}
return asOtherConstType;
}
@@ -2310,6 +2319,7 @@ UndefinedStructType::GetDIType(llvm::DIDescriptor scope) const {
ReferenceType::ReferenceType(const Type *t)
: Type(REFERENCE_TYPE), targetType(t) {
asOtherConstType = NULL;
}
@@ -2450,7 +2460,12 @@ ReferenceType::GetAsConstType() const {
}
if (IsConstType())
return this;
return new ReferenceType(targetType->GetAsConstType());
if (asOtherConstType == NULL) {
asOtherConstType = new ReferenceType(targetType->GetAsConstType());
asOtherConstType->asOtherConstType = this;
}
return asOtherConstType;
}
@@ -2462,7 +2477,12 @@ ReferenceType::GetAsNonConstType() const {
}
if (!IsConstType())
return this;
return new ReferenceType(targetType->GetAsNonConstType());
if (asOtherConstType == NULL) {
asOtherConstType = new ReferenceType(targetType->GetAsNonConstType());
asOtherConstType->asOtherConstType = this;
}
return asOtherConstType;
}