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fix some bugs in the alias support, unblocking changing of "clr" aliases

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from c++ hacks to proper .td InstAlias definitions.  Change them!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118330 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-11-06 07:31:43 +00:00
parent 662e5a30e8
commit 414098571b
4 changed files with 71 additions and 29 deletions
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43
utils/TableGen/CodeGenInstruction.cpp
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@@ -400,30 +400,35 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
ResultInst = &T.getInstruction(DI->getDef());
// Check number of arguments in the result.
if (ResultInst->Operands.size() != Result->getNumArgs())
throw TGError(R->getLoc(), "result has " + utostr(Result->getNumArgs()) +
" arguments, but " + ResultInst->TheDef->getName() +
" instruction expects " + utostr(ResultInst->Operands.size())+
" operands!");
// NameClass - If argument names are repeated, we need to verify they have
// the same class.
StringMap<Record*> NameClass;
// Decode and validate the arguments of the result.
for (unsigned i = 0, e = Result->getNumArgs(); i != e; ++i) {
Init *Arg = Result->getArg(i);
unsigned AliasOpNo = 0;
for (unsigned i = 0, e = ResultInst->Operands.size(); i != e; ++i) {
// Tied registers don't have an entry in the result dag.
if (ResultInst->Operands[i].getTiedRegister() != -1)
continue;
if (AliasOpNo >= Result->getNumArgs())
throw TGError(R->getLoc(), "result has " + utostr(Result->getNumArgs()) +
" arguments, but " + ResultInst->TheDef->getName() +
" instruction expects " +
utostr(ResultInst->Operands.size()) + " operands!");
Init *Arg = Result->getArg(AliasOpNo);
// If the operand is a record, it must have a name, and the record type must
// match up with the instruction's argument type.
if (DefInit *ADI = dynamic_cast<DefInit*>(Arg)) {
if (Result->getArgName(i).empty())
throw TGError(R->getLoc(), "result argument #" + utostr(i) +
if (Result->getArgName(AliasOpNo).empty())
throw TGError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
" must have a name!");
if (ADI->getDef() != ResultInst->Operands[i].Rec)
throw TGError(R->getLoc(), "result argument #" + utostr(i) +
throw TGError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
" declared with class " + ADI->getDef()->getName() +
", instruction operand is class " +
ResultInst->Operands[i].Rec->getName());
@@ -431,18 +436,26 @@ CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
// Verify we don't have something like: (someinst GR16:$foo, GR32:$foo)
// $foo can exist multiple times in the result list, but it must have the
// same type.
Record *&Entry = NameClass[Result->getArgName(i)];
Record *&Entry = NameClass[Result->getArgName(AliasOpNo)];
if (Entry && Entry != ADI->getDef())
throw TGError(R->getLoc(), "result value $" + Result->getArgName(i) +
throw TGError(R->getLoc(), "result value $" +
Result->getArgName(AliasOpNo) +
" is both " + Entry->getName() + " and " +
ADI->getDef()->getName() + "!");
// Now that it is validated, add it.
ResultOperands.push_back(ResultOperand(Result->getArgName(i),
ResultOperands.push_back(ResultOperand(Result->getArgName(AliasOpNo),
ADI->getDef()));
++AliasOpNo;
continue;
}
throw TGError(R->getLoc(), "result of inst alias has unknown operand type");
}
if (AliasOpNo != Result->getNumArgs())
throw TGError(R->getLoc(), "result has " + utostr(Result->getNumArgs()) +
" arguments, but " + ResultInst->TheDef->getName() +
" instruction expects " + utostr(ResultInst->Operands.size())+
" operands!");
}