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Precompute InstAlias operand mapping to result instruction operand indices.

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There should be no functional change from this, but I think it's simpler this
way.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123931 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2011-01-20 18:38:02 +00:00
parent 6456121d5c
commit 5e8f2a65ca
3 changed files with 9 additions and 24 deletions
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2
utils/TableGen/AsmMatcherEmitter.cpp
View File

@ -1213,7 +1213,7 @@ void AsmMatcherInfo::BuildAliasOperandReference(MatchableInfo *II,
CGA.ResultOperands[i].getName() == OperandName) {
// It's safe to go with the first one we find, because CodeGenInstAlias
// validates that all operands with the same name have the same record.
unsigned ResultIdx =CGA.getResultInstOperandIndexForResultOperandIndex(i);
unsigned ResultIdx = CGA.ResultInstOperandIndex[i];
Op.Class = getOperandClass(CGA.ResultInst->Operands[ResultIdx]);
Op.SrcOpName = OperandName;
return;

22
utils/TableGen/CodeGenInstruction.cpp
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@ -439,6 +439,7 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
// Now that it is validated, add it.
ResultOperands.push_back(ResultOperand(ADI->getDef()));
ResultInstOperandIndex.push_back(i);
++AliasOpNo;
continue;
}
@ -454,6 +455,7 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
// Now that it is validated, add it.
ResultOperands.push_back(ResultOperand(static_cast<Record*>(0)));
ResultInstOperandIndex.push_back(i);
++AliasOpNo;
continue;
}
@ -485,6 +487,7 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
// Now that it is validated, add it.
ResultOperands.push_back(ResultOperand(Result->getArgName(AliasOpNo),
ADI->getDef()));
ResultInstOperandIndex.push_back(i);
++AliasOpNo;
continue;
}
@ -500,6 +503,7 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
ResultOpRec->getName() +
" for integer result operand!");
ResultOperands.push_back(ResultOperand(II->getValue()));
ResultInstOperandIndex.push_back(i);
++AliasOpNo;
continue;
}
@ -513,21 +517,3 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
" instruction expects " + utostr(ResultInst->Operands.size())+
" operands!");
}
/// getResultInstOperandIndexForResultOperandIndex - Given an index into the
/// ResultOperands array, translate it to a valid index in ResultInst's
/// operand list.
unsigned CodeGenInstAlias::
getResultInstOperandIndexForResultOperandIndex(unsigned OpNo) const {
unsigned OpIdx = 0;
for (unsigned i = 0;; ++i) {
assert(i != ResultInst->Operands.size() && "Didn't find entry");
if (ResultInst->Operands[i].getTiedRegister() != -1)
continue;
if (OpIdx == OpNo) return i;
++OpIdx;
}
}

9
utils/TableGen/CodeGenInstruction.h
View File

@ -296,13 +296,12 @@ namespace llvm {
/// ResultOperands - The decoded operands for the result instruction.
std::vector<ResultOperand> ResultOperands;
/// ResultInstOperandIndex - For each operand, this vector holds the
/// corresponding index of an operand in the result instruction.
std::vector<unsigned> ResultInstOperandIndex;
CodeGenInstAlias(Record *R, CodeGenTarget &T);
/// getResultInstOperandIndexForResultOperandIndex - Given an index into the
/// ResultOperands array, translate it to a valid index in ResultInst's
/// operand list.
unsigned getResultInstOperandIndexForResultOperandIndex(unsigned i) const;
};
}