*** old/src/share/vm/opto/mulnode.cpp	Tue Jul 26 19:27:00 2011
--- new/src/share/vm/opto/mulnode.cpp	Tue Jul 26 19:27:00 2011

*** 96,106 ****
--- 96,106 ----
      if( mul1->Opcode() == mul_opcode() ) {  // Left input is a multiply?
        // Mul of a constant?
        const Type *t12 = phase->type( mul1->in(2) );
        if( t12->singleton() && t12 != Type::TOP) { // Left input is an add of a constant?
          // Compute new constant; check for overflow
!         const Type *tcon01 = mul1->as_Mul()->mul_ring(t2,t12);
!         const Type *tcon01 = ((MulNode*)mul1)->mul_ring(t2,t12);
          if( tcon01->singleton() ) {
            // The Mul of the flattened expression
            set_req(1, mul1->in(1));
            set_req(2, phase->makecon( tcon01 ));
            t2 = tcon01;