maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Token chain results are not always the first or last result. Consider copyfromreg nodes, where they are the middle result (the flag result is last) 

llvm-svn: 25325
This commit is contained in:
Chris Lattner 2006-01-14 22:41:46 +00:00
parent c17b41c3ba
commit 02011c9a4f
1 changed files with 17 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -3016,6 +3016,7 @@ SDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) {
Tmp2 = LegalizeOp(Node->getOperand(1));
Result = DAG.getNode(ISD::SRL, NVT, Tmp1, Tmp2);
break;
case ISD::LOAD:
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the pointer.
@ -3374,11 +3375,24 @@ static SDNode *FindCallSeqEnd(SDNode *Node) {
if (Node->use_empty())
return 0; // No CallSeqEnd
// The chain is usually at the end.
SDOperand TheChain(Node, Node->getNumValues()-1);
if (TheChain.getValueType() != MVT::Other)
if (TheChain.getValueType() != MVT::Other) {
// Sometimes it's at the beginning.
TheChain = SDOperand(Node, 0);
if (TheChain.getValueType() != MVT::Other)
return 0;
if (TheChain.getValueType() != MVT::Other) {
// Otherwise, hunt for it.
for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i)
if (Node->getValueType(i) == MVT::Other) {
TheChain = SDOperand(Node, i);
break;
}
// Otherwise, we walked into a node without a chain.
if (TheChain.getValueType() != MVT::Other)
return 0;
}
}
for (SDNode::use_iterator UI = Node->use_begin(),
E = Node->use_end(); UI != E; ++UI) {