[RFC 1/5] gcc: xtensa: allow XCHAL_* macros to be non-constant

[augustine.sterling@gmail.com]

On Mon, May 22, 2017 at 2:09 PM, Max Filippov <jcmvbkbc@gmail.com> wrote:
> XCHAL_* macros from the xtensa-config.h are used in a number of places
> that require them to be preprocessor constants. Rewrite these places so
> that non-constant XCHAL_* definitions could be used there.
>
> 2017-05-22  Max Filippov  <jcmvbkbc@gmail.com>
> gcc/
>         * config/xtensa/xtensa.c (xtensa_option_override): Append
>         MASK_CONST16 to target_flags in the absence of TARGET_L32R.
>         (hwloop_optimize, hwloop_fail, hwloop_pattern_reg,
>          xtensa_doloop_hooks): Define unconditionally.
>         (xtensa_reorg_loops): Only call reorg_loops in the presence of
>         TARGET_LOOPS.
>         * config/xtensa/xtensa.h (TARGET_L32R): New definition.
>         (TARGET_DEFAULT): Remove XCHAL_HAVE_L32R condition and account
>         for it in xtensa_option_override.
>         (HARD_FRAME_POINTER_IS_FRAME_POINTER,
>          HARD_FRAME_POINTER_IS_ARG_POINTER): New definitions.

This is OK. Please apply.