Re: [google][patch] Track discriminators by instruction instead of by basic block (issue4441075)

[Cary Coutant <ccoutant@google.com>]

>> 2011-04-28  Cary Coutant  <ccoutant@google.com>
>>
>>        * basic-block.h (struct basic_block_def): Remove discriminator field.
>>        * cfghooks.c (split_block): Remove discriminator field.
>>        * cfglayout.c (insn_discriminator): New function.
>>        * final.c (discriminator): Remove.
>>        (override_discriminator): New file-scope variable.
>>        (final_start_function): Remove tracking of discriminator by basic
>>        block.
>>        (final_scan_insn): Track discriminator by instruction.
>>        (notice_source_line): Check for discriminator override. Get
>>        discriminator from instruction.
>>        * gimple-pretty-print.c (dump_gimple_stmt): Print discriminator.
>>        (dump_bb_header): Don't print discriminator.
>>        * input.c: Include vecprim.h.
>>        (discriminator_location_locations): New variable.
>>        (discriminator_location_discriminators): New variable.
>>        (min_discriminator_location): New variable.
>>        (expand_location): Use map_discriminator_location.
>>        (location_with_discriminator): New function.
>>        (has_discriminator): New function.
>>        (map_discriminator_location): New function.
>>        (get_discriminator_from_locus): New function.
>>        * input.h (location_with_discriminator): New function.
>>        (has_discriminator): New function.
>>        (map_discriminator_location): New function.
>>        (get_discriminator_from_locus): New function.
>>        * print-rtl.c (print_rtx): Print discriminator.
>>        * rtl.h (insn_discriminator): New function.
>>        * tree-cfg.c: Include input.h.
>>        (assign_discriminator): Assign discriminators to instructions rather
>>        than to the basic block.
>>        * tree-pretty-print.c (dump_location): Print discriminator.
>
> OK if testing passes.

Thanks, committed to google/main.

-cary