[PATCH 01/30] [arm] Use strings for -march, -mcpu and -mtune options

[Christophe Lyon]

On 9 June 2017 at 14:53, Richard Earnshaw <Richard.Earnshaw@arm.com> wrote:
>
> In order to support more complex specifications for cpus and architectures
> we need to move away from using enumerations to represent the set of
> permitted options.  This basic change just moves the option parsing
> infrastructure over to that, but changes nothing more beyond generating
> a hint when the specified option does not match a known target (previously
> the help option was able to print out all the permitted values, but we
> can no-longer do that.
>
>         * config/arm/arm.opt (x_arm_arch_string): New TargetSave option.
>         (x_arm_cpu_string, x_arm_tune_string): Likewise.
>         (march, mcpu, mtune): Convert to string-based options.
>         * config/arm/arm.c (arm_print_hint_for_core_or_arch): New function.
>         (arm_parse_arch_cpu_name): New function.
>         (arm_configure_build_target): Use arm_parse_arch_cpu_name to
>         identify selected architecture or CPU.
>         (arm_option_save): New function.
>         (TARGET_OPTION_SAVE): Redefine.
>         (arm_option_restore): Restore string options.
>         (arm_option_print): Print string options.
> ---
>  gcc/config/arm/arm.c   | 92 ++++++++++++++++++++++++++++++++++++++++++++------
>  gcc/config/arm/arm.opt | 15 ++++++--
>  2 files changed, 94 insertions(+), 13 deletions(-)
>


I've noticed a typo (:premitted):
+/* List the premitted CPU or architecture names.  If TARGET is a near