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Improve tblgen code cleanliness: create an unknown_class, from which the unknown def inherits. Make tblgen check for that class, rather than checking for the def itself.

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llvm-svn: 163664
This commit is contained in:
Owen Anderson 2012-09-11 23:47:08 +00:00
parent 8aa2a6cbb7
commit e42d2ba20d
3 changed files with 5 additions and 4 deletions
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3
include/llvm/Target/Target.td
View File

@ -495,7 +495,8 @@ def ptr_rc : PointerLikeRegClass<0>;
/// unknown definition - Mark this operand as being of unknown type, causing
/// it to be resolved by inference in the context it is used.
def unknown;
class unknown_class;
def unknown : unknown_class;
/// AsmOperandClass - Representation for the kinds of operands which the target
/// specific parser can create and the assembly matcher may need to distinguish.

4
utils/TableGen/CodeGenDAGPatterns.cpp
View File

@ -1535,7 +1535,7 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
const CodeGenRegisterClass &RC =
CDP.getTargetInfo().getRegisterClass(RegClass);
MadeChange |= UpdateNodeType(ResNo, RC.getValueTypes(), TP);
} else if (ResultNode->getName() == "unknown") {
} else if (ResultNode->isSubClassOf("unknown_class")) {
// Nothing to do.
} else {
assert(ResultNode->isSubClassOf("RegisterClass") &&
@ -1602,7 +1602,7 @@ bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
MadeChange |= Child->UpdateNodeType(ChildResNo, VT, TP);
} else if (OperandNode->isSubClassOf("PointerLikeRegClass")) {
MadeChange |= Child->UpdateNodeType(ChildResNo, MVT::iPTR, TP);
} else if (OperandNode->getName() == "unknown") {
} else if (OperandNode->isSubClassOf("unknown_class")) {
// Nothing to do.
} else
llvm_unreachable("Unknown operand type!");

2
utils/TableGen/CodeGenInstruction.cpp
View File

@ -101,7 +101,7 @@ CGIOperandList::CGIOperandList(Record *R) : TheDef(R) {
} else if (Rec->isSubClassOf("RegisterClass")) {
OperandType = "OPERAND_REGISTER";
} else if (!Rec->isSubClassOf("PointerLikeRegClass") &&
Rec->getName() != "unknown")
!Rec->isSubClassOf("unknown_class"))
throw "Unknown operand class '" + Rec->getName() +
"' in '" + R->getName() + "' instruction!";