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03d222fab6
This converts the recently added implicit -mthumb support code to use
the new data structures. Since we have a very simple query and no
initialized copies of the sbitmaps, for now we simply scan the list of
features to look for the one of interest.
* arm-opts.h (struct arm_arch_core_flag): Add new field ISA.
Initialize it.
(arm_arch_core_flag): Delete flags field.
(arm_arch_core_flags): Don't initialize flags field.
* common/config/arm/arm-common.c (check_isa_bits_for): New function.
(arm_target_thumb_only): Use new isa bits arrays.
From-SVN: r243704
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