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diff src/share/vm/opto/mulnode.hpp @ 145:f3de1255b035

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6603011: RFE: Optimize long division Summary: Transform long division by constant into multiply Reviewed-by: never, kvn
author rasbold
date Wed, 07 May 2008 08:06:46 -0700
parents a61af66fc99e
children d1605aabd0a1
line wrap: on
line diff
--- a/src/share/vm/opto/mulnode.hpp	Tue Apr 29 19:45:22 2008 -0700
+++ b/src/share/vm/opto/mulnode.hpp	Wed May 07 08:06:46 2008 -0700
@@ -133,6 +133,16 @@
   virtual uint ideal_reg() const { return Op_RegD; }
 };
 
+//-------------------------------MulHiLNode------------------------------------
+// Upper 64 bits of a 64 bit by 64 bit multiply
+class MulHiLNode : public Node {
+public:
+  MulHiLNode( Node *in1, Node *in2 ) : Node(0,in1,in2) {}
+  virtual int Opcode() const;
+  virtual const Type *Value( PhaseTransform *phase ) const;
+  const Type *bottom_type() const { return TypeLong::LONG; }
+  virtual uint ideal_reg() const { return Op_RegL; }
+};
 
 //------------------------------AndINode---------------------------------------
 // Logically AND 2 integers.  Included with the MUL nodes because it inherits