case MULT:
/* For addition we can safely permute the conversion and addition
operation if one operand is a constant and converting the constant
- does not change it. We can always safely permute them if we are
- making the address narrower. */
+ does not change it or if one operand is a constant and we are
+ using a ptr_extend instruction (POINTERS_EXTEND_UNSIGNED < 0).
+ We can always safely permute them if we are making the address
+ narrower. */
if (GET_MODE_SIZE (to_mode) < GET_MODE_SIZE (from_mode)
|| (GET_CODE (x) == PLUS
&& GET_CODE (XEXP (x, 1)) == CONST_INT
- && XEXP (x, 1) == convert_memory_address (to_mode, XEXP (x, 1))))
+ && (XEXP (x, 1) == convert_memory_address (to_mode, XEXP (x, 1))
+ || POINTERS_EXTEND_UNSIGNED < 0)))
return gen_rtx_fmt_ee (GET_CODE (x), to_mode,
convert_memory_address (to_mode, XEXP (x, 0)),
XEXP (x, 1));