Added support to specify predicates.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24715 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetSelectionDAG.td b/lib/Target/TargetSelectionDAG.td
index 0a81078..46fbd9f 100644
--- a/lib/Target/TargetSelectionDAG.td
+++ b/lib/Target/TargetSelectionDAG.td
@@ -382,8 +382,9 @@
 //
 
 class Pattern<dag patternToMatch, list<dag> resultInstrs> {
-  dag       PatternToMatch = patternToMatch;
-  list<dag> ResultInstrs   = resultInstrs;
+  dag             PatternToMatch = patternToMatch;
+  list<dag>       ResultInstrs   = resultInstrs;
+  list<Predicate> Predicates     = [];  // See class Instruction in Target.td.
 }
 
 // Pat - A simple (but common) form of a pattern, which produces a simple result