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Add an assertion, avoid some unneeded work for each call. No functionality

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change.

llvm-svn: 28347
This commit is contained in:
Chris Lattner 2006-05-17 17:55:45 +00:00
parent 03c70b7f27
commit d3ff015877
1 changed files with 10 additions and 6 deletions
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16
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -820,13 +820,15 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case ISD::FORMAL_ARGUMENTS:
case ISD::CALL:
// The only option for this is to custom lower it.
Result = TLI.LowerOperation(Result.getValue(0), DAG);
assert(Result.Val && "Target didn't custom lower this node!");
Tmp3 = TLI.LowerOperation(Result.getValue(0), DAG);
assert(Tmp3.Val && "Target didn't custom lower this node!");
assert(Tmp3.Val->getNumValues() == Result.Val->getNumValues() &&
"Lowering call/formal_arguments produced unexpected # results!");
// Since CALL/FORMAL_ARGUMENTS nodes produce multiple values, make sure to
// remember that we legalized all of them, so it doesn't get relegalized.
for (unsigned i = 0, e = Result.Val->getNumValues(); i != e; ++i) {
Tmp1 = LegalizeOp(Result.getValue(i));
for (unsigned i = 0, e = Tmp3.Val->getNumValues(); i != e; ++i) {
Tmp1 = LegalizeOp(Tmp3.getValue(i));
if (Op.ResNo == i)
Tmp2 = Tmp1;
AddLegalizedOperand(SDOperand(Node, i), Tmp1);
@ -1056,8 +1058,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
// Merge in the last call, to ensure that this call start after the last
// call ended.
Tmp1 = DAG.getNode(ISD::TokenFactor, MVT::Other, Tmp1, LastCALLSEQ_END);
Tmp1 = LegalizeOp(Tmp1);
if (LastCALLSEQ_END.getOpcode() != ISD::EntryNode) {
Tmp1 = DAG.getNode(ISD::TokenFactor, MVT::Other, Tmp1, LastCALLSEQ_END);
Tmp1 = LegalizeOp(Tmp1);
}
// Do not try to legalize the target-specific arguments (#1+).
if (Tmp1 != Node->getOperand(0)) {