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Add support in TableGen for unknown operands that infer their type from the pattern their used in. This will be used to allow insert/extract subreg patterns in .td files!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48125 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Christopher Lamb 2008-03-10 04:13:41 +00:00
parent 9be3c97183
commit 620d741250
2 changed files with 10 additions and 4 deletions
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12
utils/TableGen/CodeGenDAGPatterns.cpp
View File

@ -864,7 +864,7 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
CDP.getTargetInfo().getInstruction(getOperator()->getName());
// Apply the result type to the node
if (NumResults == 0 || InstInfo.NumDefs == 0) {
MadeChange = UpdateNodeType(MVT::isVoid, TP);
MadeChange = UpdateNodeType(MVT::isVoid, TP);
} else {
Record *ResultNode = Inst.getResult(0);
@ -872,6 +872,10 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
std::vector<unsigned char> VT;
VT.push_back(MVT::iPTR);
MadeChange = UpdateNodeType(VT, TP);
} else if (ResultNode->getName() == "unknown") {
std::vector<unsigned char> VT;
VT.push_back(MVT::isUnknown);
MadeChange = UpdateNodeType(VT, TP);
} else {
assert(ResultNode->isSubClassOf("RegisterClass") &&
"Operands should be register classes!");
@ -910,14 +914,16 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
MadeChange |= Child->UpdateNodeType(VT, TP);
} else if (OperandNode->getName() == "ptr_rc") {
MadeChange |= Child->UpdateNodeType(MVT::iPTR, TP);
} else if (OperandNode->getName() == "unknown") {
MadeChange |= Child->UpdateNodeType(MVT::isUnknown, TP);
} else {
assert(0 && "Unknown operand type!");
abort();
}
MadeChange |= Child->ApplyTypeConstraints(TP, NotRegisters);
}
if (ChildNo != getNumChildren())
if (ChildNo != getNumChildren() && !InstInfo.isVariadic)
TP.error("Instruction '" + getOperator()->getName() +
"' was provided too many operands!");

2
utils/TableGen/CodeGenInstruction.cpp
View File

@ -163,7 +163,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
isVariadic = true;
continue;
} else if (!Rec->isSubClassOf("RegisterClass") &&
Rec->getName() != "ptr_rc")
Rec->getName() != "ptr_rc" && Rec->getName() != "unknown")
throw "Unknown operand class '" + Rec->getName() +
"' in instruction '" + R->getName() + "' instruction!";