[Bug tree-optimization/53385] [4.8 Regression] "Error: operand out of range" after changes for LSHIFT_EXPR in vrp.c

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53385

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-18 
08:24:40 UTC ---
So I think you could do:
    case 'W':
      /* MB value for a PowerPC64 rldic operand.  */
      i = clz_hwi (GET_CODE (x) == CONST_INT
                   ? INTVAL (x) : CONST_DOUBLE_HIGH (x));

#if HOST_BITS_PER_WIDE_INT == 32
      if (GET_CODE (x) == CONST_INT && i)
        i += 32;  /* zero-extend high-part was all 0's */
      else if (GET_CODE (x) == CONST_DOUBLE && i == 32)
        i = clz_hwi (CONST_DOUBLE_LOW (x)) + 32;
#endif

      fprintf (file, "%d", i);
      return;