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make ptr_rc derive from a new PointerLikeRegClass tblgen class.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77503 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-07-29 20:43:05 +00:00
parent 2cfd52c507
commit a938ac6223
4 changed files with 17 additions and 7 deletions
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12
include/llvm/Target/Target.td
View File

@ -258,11 +258,21 @@ def ins;
/// of operands.
def variable_ops;
/// PointerLikeRegClass - Values that are designed to have pointer width are
/// derived from this. TableGen treats the register class as having a symbolic
/// type that it doesn't know, and resolves the actual regclass to use by using
/// the TargetRegisterInfo::getPointerRegClass() hook at codegen time.
class PointerLikeRegClass {
}
/// ptr_rc definition - Mark this operand as being a pointer value whose
/// register class is resolved dynamically via a callback to TargetInstrInfo.
/// FIXME: We should probably change this to a class which contain a list of
/// flags. But currently we have but one flag.
def ptr_rc;
def ptr_rc : PointerLikeRegClass;
/// unknown definition - Mark this operand as being of unknown type, causing
/// it to be resolved by inference in the context it is used.

8
utils/TableGen/CodeGenDAGPatterns.cpp
View File

@ -753,7 +753,7 @@ static std::vector<unsigned char> getImplicitType(Record *R, bool NotRegisters,
std::vector<unsigned char>
ComplexPat(1, TP.getDAGPatterns().getComplexPattern(R).getValueType());
return ComplexPat;
} else if (R->getName() == "ptr_rc") {
} else if (R->isSubClassOf("PointerLikeRegClass")) {
Other[0] = MVT::iPTR;
return Other;
} else if (R->getName() == "node" || R->getName() == "srcvalue" ||
@ -924,7 +924,7 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
} else {
Record *ResultNode = Inst.getResult(0);
if (ResultNode->getName() == "ptr_rc") {
if (ResultNode->isSubClassOf("PointerLikeRegClass")) {
std::vector<unsigned char> VT;
VT.push_back(MVT::iPTR);
MadeChange = UpdateNodeType(VT, TP);
@ -968,7 +968,7 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
} else if (OperandNode->isSubClassOf("Operand")) {
VT = getValueType(OperandNode->getValueAsDef("Type"));
MadeChange |= Child->UpdateNodeType(VT, TP);
} else if (OperandNode->getName() == "ptr_rc") {
} else if (OperandNode->isSubClassOf("PointerLikeRegClass")) {
MadeChange |= Child->UpdateNodeType(MVT::iPTR, TP);
} else if (OperandNode->getName() == "unknown") {
MadeChange |= Child->UpdateNodeType(EMVT::isUnknown, TP);
@ -1602,7 +1602,7 @@ FindPatternInputsAndOutputs(TreePattern *I, TreePatternNode *Pat,
I->error("set destination should be a register!");
if (Val->getDef()->isSubClassOf("RegisterClass") ||
Val->getDef()->getName() == "ptr_rc") {
Val->getDef()->isSubClassOf("PointerLikeRegClass")) {
if (Dest->getName().empty())
I->error("set destination must have a name!");
if (InstResults.count(Dest->getName()))

2
utils/TableGen/DAGISelEmitter.cpp
View File

@ -698,7 +698,7 @@ public:
if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
Record *LeafRec = DI->getDef();
if (LeafRec->isSubClassOf("RegisterClass") ||
LeafRec->getName() == "ptr_rc") {
LeafRec->isSubClassOf("PointerLikeRegClass")) {
// Handle register references. Nothing to do here.
} else if (LeafRec->isSubClassOf("Register")) {
// Handle register references.

2
utils/TableGen/InstrInfoEmitter.cpp
View File

@ -100,7 +100,7 @@ InstrInfoEmitter::GetOperandInfo(const CodeGenInstruction &Inst) {
Res += "0";
// Ptr value whose register class is resolved via callback.
if (OpR->getName() == "ptr_rc")
if (OpR->isSubClassOf("PointerLikeRegClass"))
Res += "|(1<<TOI::LookupPtrRegClass)";
// Predicate operands. Check to see if the original unexpanded operand