H. J. Lu wrote:
PR rtl-optimization/25603
* reload.c (reg_inc_found_and_valid_p): New.
(regno_clobbered_p): Handle REG_INC as 25603 workaround.
I don't believe this is safe. If you look at the uses of
regno_clobbered_p in reload.c, the comments clearly indicate that we are
looking for registers used in clobbers. So unconditionally adding code
that handles REG_INC notes will break these uses. You have to add the
REG_INC support the same way that the sets support was added, by adding
another argument (or reusing the sets argument), and then modifying the
one place we know is broken (choose_reload_regs) to use the new argument
(or new sets argument value).
--
Jim Wilson, GNU Tools Support, http://www.specifix.com
