add a new CheckMultiOpcode opcode for checking that a node
has one of the list of acceptable opcodes for a complex 
pattern.  This fixes 4 regtest failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96814 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/DAGISelMatcher.h b/utils/TableGen/DAGISelMatcher.h
index c162a0c..2379a21 100644
--- a/utils/TableGen/DAGISelMatcher.h
+++ b/utils/TableGen/DAGISelMatcher.h
@@ -51,6 +51,7 @@
     CheckPatternPredicate,
     CheckPredicate,       // Fail if node predicate fails.
     CheckOpcode,          // Fail if not opcode.
+    CheckMultiOpcode,     // Fail if not in opcode list.
     CheckType,            // Fail if not correct type.
     CheckInteger,         // Fail if wrong val.
     CheckCondCode,        // Fail if not condcode.
@@ -262,6 +263,26 @@
   virtual void print(raw_ostream &OS, unsigned indent = 0) const;
 };
   
+/// CheckMultiOpcodeMatcherNode - This checks to see if the current node has one
+/// of the specified opcode, if not it fails to match.
+class CheckMultiOpcodeMatcherNode : public MatcherNode {
+  SmallVector<StringRef, 4> OpcodeNames;
+public:
+  CheckMultiOpcodeMatcherNode(const StringRef *opcodes, unsigned numops)
+  : MatcherNode(CheckMultiOpcode), OpcodeNames(opcodes, opcodes+numops) {}
+  
+  unsigned getNumOpcodeNames() const { return OpcodeNames.size(); }
+  StringRef getOpcodeName(unsigned i) const { return OpcodeNames[i]; }
+  
+  static inline bool classof(const MatcherNode *N) {
+    return N->getKind() == CheckMultiOpcode;
+  }
+  
+  virtual void print(raw_ostream &OS, unsigned indent = 0) const;
+};
+  
+  
+  
 /// CheckTypeMatcherNode - This checks to see if the current node has the
 /// specified type, if not it fails to match.
 class CheckTypeMatcherNode : public MatcherNode {