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Re: [GOOGLE] Assign discriminators for different callsites at a same line within one BB


All tests pass.

Dehao

On Mon, Aug 19, 2013 at 3:02 PM, Dehao Chen <dehao@google.com> wrote:
> This patch assigns discriminators for different callsites within the
> same BB. This is needed for accurate profile attribution in AutoFDO.
>
> Testing on going.
>
> OK for google branches if test pass?
>
> Thanks,
> Dehao
>
> Index: gcc/tree-cfg.c
> ===================================================================
> --- gcc/tree-cfg.c (revision 201858)
> +++ gcc/tree-cfg.c (working copy)
> @@ -781,9 +781,25 @@ assign_discriminators (void)
>      {
>        edge e;
>        edge_iterator ei;
> +      gimple_stmt_iterator gsi;
>        gimple last = last_stmt (bb);
>        location_t locus = last ? gimple_location (last) : UNKNOWN_LOCATION;
> +      location_t curr_locus = UNKNOWN_LOCATION;
>
> +      for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
> + {
> +  gimple stmt = gsi_stmt (gsi);
> +  if (gimple_code (stmt) != GIMPLE_CALL)
> +    continue;
> +  if (curr_locus == UNKNOWN_LOCATION ||
> +      !same_line_p (curr_locus, gimple_location (stmt)))
> +    curr_locus = gimple_location (stmt);
> +  else
> +    gimple_set_location (stmt, location_with_discriminator (
> + gimple_location (stmt),
> + next_discriminator_for_locus (gimple_location (stmt))));
> + }
> +
>        if (locus == UNKNOWN_LOCATION)
>   continue;


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