[llvm-commits] [llvm] r96437 - /llvm/trunk/utils/TableGen/DAGISelMatcherGen.cpp

[Chris Lattner]

Author: lattner
Date: Tue Feb 16 19:34:15 2010
New Revision: 96437

URL: http://llvm.org/viewvc/llvm-project?rev=96437&view=rev
Log:
record input chains.

Modified:
    llvm/trunk/utils/TableGen/DAGISelMatcherGen.cpp

Modified: llvm/trunk/utils/TableGen/DAGISelMatcherGen.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/DAGISelMatcherGen.cpp?rev=96437&r1=96436&r2=96437&view=diff

==============================================================================
--- llvm/trunk/utils/TableGen/DAGISelMatcherGen.cpp (original)
+++ llvm/trunk/utils/TableGen/DAGISelMatcherGen.cpp Tue Feb 16 19:34:15 2010
@@ -194,6 +194,15 @@
   // 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