[arm] Use standard option parsing code for detecting

Programming / Compilers / GCC - rearnsha [138bc75d-0d04-0410-961f-82ee72b054a4] - 16 June 2017 17:03 EDT

Now that the standard CPU and architecture option parsing code is available in the driver we can use the main CPU and architecture data tables for driving the automatic enabling of Thumb code.

Doing this requires that the driver script tell the parser whether or not the target string is a CPU name or an architecture, but beyond that it is just standard use of the new capabilities.

We do, however, now get some error checking if the target isn't recognized, when previously we just ignored unknown targets and hoped that a later pass would pick up on this.

- config/arm/arm.h (TARGET_MODE_SPECS): Add additional parameter to call to target_mode_check describing the type of option passed.
- common/config/arm/arm-common.c (arm_arch_core_flag): Delete. (arm_target_thumb_only): Use arm_parse_arch_option_name or arm_parse_cpu_option_name to match parameters against list of available targets.
- config/arm/parsecpu.awk (gen_comm_data): Don't generate arm_arch_core_flags data structure.
- config/arm/arm-cpu_cdata.h: Regenerated.

3dd6864 [arm] Use standard option parsing code for detecting
gcc/ChangeLog | 12 +
gcc/common/config/arm/arm-common.c | 66 ++-
gcc/config/arm/arm-cpu-cdata.h | 1078 ------------------------------------
gcc/config/arm/arm.h | 2 +-
gcc/config/arm/parsecpu.awk | 38 --
5 files changed, 60 insertions(+), 1136 deletions(-)

Upstream: gcc.gnu.org

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