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SIL: Move SILFunctionTypeInfo into a side table.

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Generate and cache SILFunctionTypeInfo from Swift types on the fly, and simplify the SILType representation down to a CanType and isAddress bit.

Swift SVN r5298
This commit is contained in:
Joe Groff
2013-05-24 16:33:52 +00:00
parent e3269a3b95
commit 0dc5c66cd2
17 changed files with 141 additions and 166 deletions
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47
lib/SIL/SILModule.cpp
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@@ -12,6 +12,7 @@
#include "swift/SIL/SILModule.h"
#include "swift/SIL/SILValue.h"
#include "swift/SIL/TypeVisitor.h"
#include "llvm/ADT/FoldingSet.h"
using namespace swift;
@@ -85,3 +86,49 @@ SILTypeList *SILModule::getSILTypeList(ArrayRef<SILType> Types) const {
UniqueMap->InsertNode(NewList, InsertPoint);
return NewList;
}
namespace {
/// Recursively destructure tuple-type arguments into SIL argument types.
class LoweredFunctionInputTypeVisitor
: public Lowering::TypeVisitor<LoweredFunctionInputTypeVisitor>
{
SILModule &M;
SmallVectorImpl<SILType> &inputTypes;
public:
LoweredFunctionInputTypeVisitor(SILModule &M,
SmallVectorImpl<SILType> &inputTypes)
: M(M), inputTypes(inputTypes) {}
void visitType(TypeBase *t) {
inputTypes.push_back(M.Types.getLoweredType(t));
}
void visitTupleType(TupleType *tt) {
for (auto &field : tt->getFields()) {
visit(field.getType()->getCanonicalType());
}
}
};
} // end anonymous namespace
SILFunctionTypeInfo *SILModule::makeFunctionTypeInfo(AnyFunctionType *ft)
{
SmallVector<SILType, 8> inputTypes;
// If the result type lowers to an address-only type, add it as an indirect
// return argument.
SILType resultType = Types.getLoweredType(ft->getResult());
bool hasIndirectReturn = resultType.isAddressOnly(*this);
if (hasIndirectReturn) {
inputTypes.push_back(resultType);
resultType = Types.getEmptyTupleType();
}
// Destructure the input tuple type.
LoweredFunctionInputTypeVisitor(*this, inputTypes)
.visit(ft->getInput()->getCanonicalType());
return SILFunctionTypeInfo::create(CanType(ft), inputTypes, resultType,
hasIndirectReturn, *this);
}