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legalize target-specific operations

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22010 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-05-14 06:34:48 +00:00
parent 89c34637cb
commit d73cc5d058
1 changed files with 23 additions and 0 deletions
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23
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -197,6 +197,29 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
switch (Node->getOpcode()) {
default:
if (Node->getOpcode() >= ISD::BUILTIN_OP_END) {
// If this is a target node, legalize it by legalizing the operands then
// passing it through.
std::vector<SDOperand> Ops;
bool Changed = false;
for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) {
Ops.push_back(LegalizeOp(Node->getOperand(i)));
Changed = Changed || Node->getOperand(i) != Ops.back();
}
if (Changed)
if (Node->getNumValues() == 1)
Result = DAG.getNode(Node->getOpcode(), Node->getValueType(0), Ops);
else {
std::vector<MVT::ValueType> VTs(Node->value_begin(),
Node->value_end());
Result = DAG.getNode(Node->getOpcode(), VTs, Ops);
}
for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
AddLegalizedOperand(Op.getValue(i), Result.getValue(i));
return Result.getValue(Op.ResNo);
}
// Otherwise this is an unhandled builtin node. splat.
std::cerr << "NODE: "; Node->dump(); std::cerr << "\n";
assert(0 && "Do not know how to legalize this operator!");
abort();