src/share/vm/opto/superword.cpp

rev 9087 : 8136820: Generate better code for some Unsafe addressing patterns
Summary: reshape address computation to move invariant part out of loops
Reviewed-by:

*** 3053,3062 ****
--- 3053,3065 ----
        NOT_PRODUCT(_tracer.offset_plus_k_9(n, _invar, _negate_invar, _offset);)
        return true;
      }
    }
    if (invariant(n)) {
+     if (opc == Op_ConvI2L) {
+       n = n->in(1);
+     }
      _negate_invar = negate;
      _invar = n;
      NOT_PRODUCT(_tracer.offset_plus_k_10(n, _invar, _negate_invar, _offset);)
      return true;
    }