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Nate wants to define 'Pat's which turn into instructions that don't have

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patterns.  Certainly a logical request.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23810 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-10-19 01:27:22 +00:00
parent 8d94832394
commit 0c0cfa741f
1 changed files with 30 additions and 4 deletions
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34
utils/TableGen/DAGISelEmitter.cpp
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@ -975,11 +975,36 @@ void DAGISelEmitter::ParseInstructions() {
std::vector<Record*> Instrs = Records.getAllDerivedDefinitions("Instruction");
for (unsigned i = 0, e = Instrs.size(); i != e; ++i) {
if (!dynamic_cast<ListInit*>(Instrs[i]->getValueInit("Pattern")))
continue; // no pattern yet, ignore it.
ListInit *LI = 0;
ListInit *LI = Instrs[i]->getValueAsListInit("Pattern");
if (LI->getSize() == 0) continue; // no pattern.
if (dynamic_cast<ListInit*>(Instrs[i]->getValueInit("Pattern")))
LI = Instrs[i]->getValueAsListInit("Pattern");
// If there is no pattern, only collect minimal information about the
// instruction for its operand list. We have to assume that there is one
// result, as we have no detailed info.
if (!LI || LI->getSize() == 0) {
std::vector<MVT::ValueType> ResultTypes;
std::vector<MVT::ValueType> OperandTypes;
CodeGenInstruction &InstInfo =Target.getInstruction(Instrs[i]->getName());
// Doesn't even define a result?
if (InstInfo.OperandList.size() == 0)
continue;
// Assume the first operand is the result.
ResultTypes.push_back(InstInfo.OperandList[0].Ty);
// The rest are inputs.
for (unsigned j = 1, e = InstInfo.OperandList.size(); j != e; ++j)
OperandTypes.push_back(InstInfo.OperandList[j].Ty);
// Create and insert the instruction.
Instructions.insert(std::make_pair(Instrs[i],
DAGInstruction(0, ResultTypes, OperandTypes)));
continue; // no pattern.
}
// Parse the instruction.
TreePattern *I = new TreePattern(Instrs[i], LI, *this);
@ -1112,6 +1137,7 @@ void DAGISelEmitter::ParseInstructions() {
for (std::map<Record*, DAGInstruction>::iterator II = Instructions.begin(),
E = Instructions.end(); II != E; ++II) {
TreePattern *I = II->second.getPattern();
if (I == 0) continue; // No pattern.
if (I->getNumTrees() != 1) {
std::cerr << "CANNOT HANDLE: " << I->getRecord()->getName() << " yet!";