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Instructions with ImmutablePredicateOperand aren't really predicable since their predicates are fixed at isel time. 

llvm-svn: 37899
This commit is contained in:
Evan Cheng 2007-07-05 07:19:29 +00:00
parent 94f04c6fc9
commit e32e7fb40d
2 changed files with 6 additions and 2 deletions
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5
llvm/utils/TableGen/CodeGenTarget.cpp
View File

@ -411,7 +411,10 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
if (unsigned NumArgs = MIOpInfo->getNumArgs())
NumOps = NumArgs;
isPredicable |= Rec->isSubClassOf("PredicateOperand");
if (Rec->isSubClassOf("PredicateOperand")) {
if (!Rec->getValueAsBit("isImmutable"))
isPredicable = true;
}
} else if (Rec->getName() == "variable_ops") {
hasVariableNumberOfOperands = true;
continue;

3
llvm/utils/TableGen/InstrInfoEmitter.cpp
View File

@ -107,7 +107,8 @@ InstrInfoEmitter::GetOperandInfo(const CodeGenInstruction &Inst) {
// Predicate operands. Check to see if the original unexpanded operand
// was of type PredicateOperand.
if (Inst.OperandList[i].Rec->isSubClassOf("PredicateOperand"))
if (Inst.OperandList[i].Rec->isSubClassOf("PredicateOperand") &&
!Inst.OperandList[i].Rec->getValueAsBit("isImmutable"))
Res += "|M_PREDICATE_OPERAND";
// Fill in constraint info.