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Catch another case where SD fails to propagate node order.

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I need to handle this for the test case in my following scheduler
commit.

Work is already under way to redesign the mechanism for node order
propagation because this case by case approach is unmaintainable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179448 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick 2013-04-13 06:07:36 +00:00
parent 107cd0caa9
commit c706dc7ae7
1 changed files with 4 additions and 1 deletions
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5
lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -1720,7 +1720,7 @@ SDNode *X86DAGToDAGISel::SelectAtomicLoadArith(SDNode *Node, EVT NVT) {
Op = ADD;
break;
}
Val = getAtomicLoadArithTargetConstant(CurDAG, dl, Op, NVT, Val);
bool isUnOp = !Val.getNode();
bool isCN = Val.getNode() && (Val.getOpcode() == ISD::TargetConstant);
@ -2343,6 +2343,9 @@ SDNode *X86DAGToDAGISel::Select(SDNode *Node) {
DEBUG(dbgs() << "=> "; ResHi.getNode()->dump(CurDAG); dbgs() << '\n');
}
// Propagate ordering to the last node, for now.
CurDAG->AssignOrdering(InFlag.getNode(), CurDAG->GetOrdering(Node));
return NULL;
}