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record input chains.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96437 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-17 01:34:15 +00:00
parent c642b84fb8
commit 2f7ecdeb1d
1 changed files with 9 additions and 0 deletions
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9
utils/TableGen/DAGISelMatcherGen.cpp
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@ -194,6 +194,15 @@ void MatcherGen::EmitOperatorMatchCode(const TreePatternNode *N,
// the child numbers of the node are all offset by one.
unsigned OpNo = 0;
if (N->NodeHasProperty(SDNPHasChain, CGP)) {
// Record the input chain, which is always input #0 of the SDNode.
AddMatcherNode(new MoveChildMatcherNode(0));
++NextRecordedOperandNo;
AddMatcherNode(new RecordMatcherNode("'" + N->getOperator()->getName() +
"' input chain"));
AddMatcherNode(new MoveParentMatcherNode());
// Don't look at the input chain when matching the tree pattern to the
// SDNode.
OpNo = 1;
// If this node is not the root and the subtree underneath it produces a