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replace SrcOpNum with SrcOpName, eliminating a numering dependency

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on the incoming operand list.  This also makes the code simpler.

llvm-svn: 118225
This commit is contained in:
Chris Lattner 2010-11-04 01:42:59 +00:00
parent 06d64897d3
commit fcdb263fa4
1 changed files with 23 additions and 26 deletions
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49
utils/TableGen/AsmMatcherEmitter.cpp
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@ -250,10 +250,10 @@ struct MatchableInfo {
/// The unique class instance this operand should match.
ClassInfo *Class;
/// The original operand this corresponds to.
int SrcOpNum;
/// The operand name this is, if anything.
StringRef SrcOpName;
explicit AsmOperand(StringRef T) : Token(T), Class(0), SrcOpNum(-1) {}
explicit AsmOperand(StringRef T) : Token(T), Class(0) {}
};
/// ResOperand - This represents a single operand in the result instruction
@ -1141,7 +1141,7 @@ BuildInstructionOperandReference(MatchableInfo *II,
for (unsigned i = 0, e = Operands.size(); i != e; ++i) {
if (Operands[i].MIOperandNo == unsigned(OITied)) {
OI = &Operands[i];
Idx = i;
OperandName = OI->Name;
break;
}
}
@ -1150,40 +1150,37 @@ BuildInstructionOperandReference(MatchableInfo *II,
}
Op.Class = getOperandClass(Token, *OI);
Op.SrcOpNum = Idx;
Op.SrcOpName = OperandName;
}
void MatchableInfo::BuildResultOperands() {
/// OperandMap - This is a mapping from the MCInst operands (specified by the
/// II.OperandList operands) to the AsmOperands that they are filled in from.
SmallVector<int, 16> OperandMap(TheOperandList.size(), -1);
// Order the (class) operands by the order to convert them into an MCInst.
for (unsigned i = 0, e = AsmOperands.size(); i != e; ++i) {
MatchableInfo::AsmOperand &Op = AsmOperands[i];
if (Op.SrcOpNum != -1)
OperandMap[Op.SrcOpNum] = i;
}
for (unsigned i = 0, e = TheOperandList.size(); i != e; ++i) {
const CGIOperandList::OperandInfo &OpInfo = TheOperandList[i];
// If this is a tied operand, just copy from the previously handled operand.
int TiedOp = OpInfo.getTiedRegister();
if (TiedOp != -1) {
ResOperands.push_back(ResOperand::getTiedOp(TiedOp, &OpInfo));
continue;
}
// Find out what operand from the asmparser that this MCInst operand comes
// from.
int SrcOperand = OperandMap[i];
if (SrcOperand != -1) {
int SrcOperand = -1;
for (unsigned op = 0, e = AsmOperands.size(); op != e; ++op)
if (OpInfo.Name == AsmOperands[op].SrcOpName) {
SrcOperand = op;
break;
}
if (!OpInfo.Name.empty() && SrcOperand != -1) {
ResOperands.push_back(ResOperand::getRenderedOp(SrcOperand, &OpInfo));
continue;
}
// Otherwise, this must be a tied operand.
int TiedOp = OpInfo.getTiedRegister();
if (TiedOp == -1)
throw TGError(TheDef->getLoc(), "Instruction '" +
TheDef->getName() + "' has operand '" + OpInfo.Name +
"' that doesn't appear in asm string!");
ResOperands.push_back(ResOperand::getTiedOp(TiedOp, &OpInfo));
throw TGError(TheDef->getLoc(), "Instruction '" +
TheDef->getName() + "' has operand '" + OpInfo.Name +
"' that doesn't appear in asm string!");
}
}