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Implement test/Regression/TableGen/ListSlices.td

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15249 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-27 01:01:21 +00:00
parent 3aa965fbf4
commit 1dba7abdd7
2 changed files with 142 additions and 29 deletions
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115
utils/TableGen/Record.cpp
View File

@ -320,6 +320,28 @@ Init *ListInit::convertInitListSlice(const std::vector<unsigned> &Elements) {
return new ListInit(Vals);
}
Init *ListInit::resolveReferences(Record &R) {
std::vector<Init*> Resolved;
Resolved.reserve(getSize());
bool Changed = false;
for (unsigned i = 0, e = getSize(); i != e; ++i) {
Init *E;
Init *CurElt = getElement(i);
do {
E = CurElt;
CurElt = CurElt->resolveReferences(R);
Changed |= E != CurElt;
} while (E != CurElt);
Resolved.push_back(E);
}
if (Changed)
return new ListInit(Resolved);
return this;
}
void ListInit::print(std::ostream &OS) const {
OS << "[";
for (unsigned i = 0, e = Values.size(); i != e; ++i) {
@ -329,7 +351,7 @@ void ListInit::print(std::ostream &OS) const {
OS << "]";
}
Init *VarInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
Init *TypedInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsRecTy *T = dynamic_cast<BitsRecTy*>(getType());
if (T == 0) return 0; // Cannot subscript a non-bits variable...
unsigned NumBits = T->getNumBits();
@ -345,9 +367,24 @@ Init *VarInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
return BI;
}
Init *TypedInit::convertInitListSlice(const std::vector<unsigned> &Elements) {
ListRecTy *T = dynamic_cast<ListRecTy*>(getType());
if (T == 0) return 0; // Cannot subscript a non-list variable...
if (Elements.size() == 1)
return new VarListElementInit(this, Elements[0]);
std::vector<Init*> ListInits;
ListInits.reserve(Elements.size());
for (unsigned i = 0, e = Elements.size(); i != e; ++i)
ListInits.push_back(new VarListElementInit(this, Elements[i]));
return new ListInit(ListInits);
}
Init *VarInit::resolveBitReference(Record &R, unsigned Bit) {
if (R.isTemplateArg(getName()))
return this;
return 0;
RecordVal *RV = R.getValue(getName());
assert(RV && "Reference to a non-existant variable?");
@ -359,9 +396,27 @@ Init *VarInit::resolveBitReference(Record &R, unsigned Bit) {
if (!dynamic_cast<UnsetInit*>(B)) // If the bit is not set...
return B; // Replace the VarBitInit with it.
return this;
return 0;
}
Init *VarInit::resolveListElementReference(Record &R, unsigned Elt) {
if (R.isTemplateArg(getName()))
return 0;
RecordVal *RV = R.getValue(getName());
assert(RV && "Reference to a non-existant variable?");
ListInit *LI = dynamic_cast<ListInit*>(RV->getValue());
assert(LI && "Invalid list element!");
if (Elt >= LI->getSize())
return 0; // Out of range reference.
Init *E = LI->getElement(Elt);
if (!dynamic_cast<UnsetInit*>(E)) // If the element is set
return E; // Replace the VarListElementInit with it.
return 0;
}
RecTy *VarInit::getFieldType(const std::string &FieldName) const {
if (RecordRecTy *RTy = dynamic_cast<RecordRecTy*>(getType()))
if (const RecordVal *RV = RTy->getRecord()->getValue(FieldName))
@ -396,12 +451,29 @@ Init *VarInit::resolveReferences(Record &R) {
Init *VarBitInit::resolveReferences(Record &R) {
Init *I = getVariable()->resolveBitReference(R, getBitNum());
if (I != getVariable())
if (Init *I = getVariable()->resolveBitReference(R, getBitNum()))
return I;
return this;
}
Init *VarListElementInit::resolveReferences(Record &R) {
if (Init *I = getVariable()->resolveListElementReference(R, getElementNum()))
return I;
return this;
}
Init *VarListElementInit::resolveBitReference(Record &R, unsigned Bit) {
// FIXME: This should be implemented, to support references like:
// bit B = AA[0]{1};
return 0;
}
Init *VarListElementInit::resolveListElementReference(Record &R, unsigned Elt) {
// FIXME: This should be implemented, to support references like:
// int B = AA[0][1];
return 0;
}
RecTy *DefInit::getFieldType(const std::string &FieldName) const {
if (const RecordVal *RV = Def->getValue(FieldName))
return RV->getType();
@ -417,25 +489,8 @@ void DefInit::print(std::ostream &OS) const {
OS << Def->getName();
}
Init *FieldInit::convertInitializerBitRange(const std::vector<unsigned> &Bits) {
BitsRecTy *T = dynamic_cast<BitsRecTy*>(getType());
if (T == 0) return 0; // Cannot subscript a non-bits field...
unsigned NumBits = T->getNumBits();
BitsInit *BI = new BitsInit(Bits.size());
for (unsigned i = 0, e = Bits.size(); i != e; ++i) {
if (Bits[i] >= NumBits) {
delete BI;
return 0;
}
BI->setBit(i, new VarBitInit(this, Bits[i]));
}
return BI;
}
Init *FieldInit::resolveBitReference(Record &R, unsigned Bit) {
Init *BitsVal = Rec->getFieldInit(R, FieldName);
if (BitsVal)
if (Init *BitsVal = Rec->getFieldInit(R, FieldName))
if (BitsInit *BI = dynamic_cast<BitsInit*>(BitsVal)) {
assert(Bit < BI->getNumBits() && "Bit reference out of range!");
Init *B = BI->getBit(Bit);
@ -443,7 +498,19 @@ Init *FieldInit::resolveBitReference(Record &R, unsigned Bit) {
if (dynamic_cast<BitInit*>(B)) // If the bit is set...
return B; // Replace the VarBitInit with it.
}
return this;
return 0;
}
Init *FieldInit::resolveListElementReference(Record &R, unsigned Elt) {
if (Init *ListVal = Rec->getFieldInit(R, FieldName))
if (ListInit *LI = dynamic_cast<ListInit*>(ListVal)) {
if (Elt >= LI->getSize()) return 0;
Init *E = LI->getElement(Elt);
if (!dynamic_cast<UnsetInit*>(E)) // If the bit is set...
return E; // Replace the VarListElementInit with it.
}
return 0;
}
Init *FieldInit::resolveReferences(Record &R) {

56
utils/TableGen/Record.h
View File

@ -48,6 +48,7 @@ class TypedInit;
class VarInit;
class FieldInit;
class VarBitInit;
class VarListElementInit;
// Other classes...
class Record;
@ -481,6 +482,13 @@ public:
return Ty->convertValue(this);
}
/// resolveReferences - This method is used by classes that refer to other
/// variables which may not be defined at the time they expression is formed.
/// If a value is set for the variable later, this method will be called on
/// users of the value to allow the value to propagate out.
///
virtual Init *resolveReferences(Record &R);
virtual void print(std::ostream &OS) const;
};
@ -495,11 +503,19 @@ public:
RecTy *getType() const { return Ty; }
virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
virtual Init *convertInitListSlice(const std::vector<unsigned> &Elements);
/// resolveBitReference - This method is used to implement
/// VarBitInit::resolveReferences. If the bit is able to be resolved, we
/// simply return the resolved value, otherwise we return this.
/// simply return the resolved value, otherwise we return null.
///
virtual Init *resolveBitReference(Record &R, unsigned Bit) = 0;
/// resolveListElementReference - This method is used to implement
/// VarListElementInit::resolveReferences. If the list element is resolvable
/// now, we return the resolved value, otherwise we return null.
virtual Init *resolveListElementReference(Record &R, unsigned Elt) = 0;
};
/// VarInit - 'Opcode' - Represent a reference to an entire variable object.
@ -515,9 +531,8 @@ public:
const std::string &getName() const { return VarName; }
virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
virtual Init *resolveBitReference(Record &R, unsigned Bit);
virtual Init *resolveListElementReference(Record &R, unsigned Elt);
virtual RecTy *getFieldType(const std::string &FieldName) const;
virtual Init *getFieldInit(Record &R, const std::string &FieldName) const;
@ -558,6 +573,38 @@ public:
virtual Init *resolveReferences(Record &R);
};
/// VarListElementInit - List[4] - Represent access to one element of a var or
/// field.
class VarListElementInit : public TypedInit {
TypedInit *TI;
unsigned Element;
public:
VarListElementInit(TypedInit *T, unsigned E)
: TypedInit(dynamic_cast<ListRecTy*>(T->getType())->getElementType()),
TI(T), Element(E) {
assert(T->getType() && dynamic_cast<ListRecTy*>(T->getType()) &&
"Illegal VarBitInit expression!");
}
virtual Init *convertInitializerTo(RecTy *Ty) {
return Ty->convertValue(this);
}
TypedInit *getVariable() const { return TI; }
unsigned getElementNum() const { return Element; }
virtual Init *resolveBitReference(Record &R, unsigned Bit);
/// resolveListElementReference - This method is used to implement
/// VarListElementInit::resolveReferences. If the list element is resolvable
/// now, we return the resolved value, otherwise we return null.
virtual Init *resolveListElementReference(Record &R, unsigned Elt);
virtual void print(std::ostream &OS) const {
TI->print(OS); OS << "[" << Element << "]";
}
virtual Init *resolveReferences(Record &R);
};
/// DefInit - AL - Represent a reference to a 'def' in the description
///
@ -596,9 +643,8 @@ public:
return Ty->convertValue(this);
}
virtual Init *convertInitializerBitRange(const std::vector<unsigned> &Bits);
virtual Init *resolveBitReference(Record &R, unsigned Bit);
virtual Init *resolveListElementReference(Record &R, unsigned Elt);
virtual Init *resolveReferences(Record &R);