From: Richard Biener <richard.guenther@gmail.com>
To: Jason Merrill <jason@redhat.com>,Aldy Hernandez <aldyh@redhat.com>
Cc: gcc-patches <gcc-patches@gcc.gnu.org>
Subject: Re: [debug-early] reuse variable DIEs and fix their context
Date: Thu, 28 Aug 2014 19:13:00 -0000 [thread overview]
Message-ID: <37953116-d2a3-474d-972a-eaa1d2d1c201@email.android.com> (raw)
In-Reply-To: <53FF6E61.6030507@redhat.com>
On August 28, 2014 8:01:05 PM CEST, Jason Merrill <jason@redhat.com> wrote:
>On 08/28/2014 01:34 PM, Aldy Hernandez wrote:
>> I wonder if instead of early dumping of all the DECLs, we could only
>> dump the toplevel scoped DECLs, and let inheritance set the proper
>> contexts.
>
>Yes, I think this makes a lot more sense; do it at a well-defined point
>
>in compilation rather than as part of free_lang_data.
>
>> We could start with calling dwarf2out_early_decl() for each function
>> decl, and then for every global. This is analogous to what we
>currently
>> do for late dwarf2out.
>>
>> see final.c for the functions:
>> if (!DECL_IGNORED_P (current_function_decl))
>> debug_hooks->function_decl (current_function_decl);
>>
>> see c/c-decl.c for the globals:
>> FOR_EACH_VEC_ELT (*all_translation_units, i, t)
>> c_write_global_declarations_2 (BLOCK_VARS (DECL_INITIAL (t)));
>> c_write_global_declarations_2 (BLOCK_VARS (ext_block));
>
>> The problem being that to calculate `ext_block' above, we need
>intimate
>> knowledge of scopes and such, only available in the FE. Is there a
>> generic way of determining if a DECL is in global scope?
Via DECL_CONTEXT and the global scope macro predicate. Eventually not enough to detect class scope statics.
>Why not do it in the FE, i.e. *_write_global_declarations?
Yeah, ultimatively I'd like the front ends to do all required dwarf2out calls but free lang data seemed a convenient place to do things.
There is no reason we can't walk its array in a more sensible order.
Richard.
>
>Jason
next prev parent reply other threads:[~2014-08-28 19:13 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 2:43 Aldy Hernandez
2014-08-28 13:58 ` Richard Biener
2014-08-28 17:35 ` Aldy Hernandez
2014-08-28 18:01 ` Jason Merrill
2014-08-28 19:13 ` Richard Biener [this message]
2014-08-28 20:14 ` Jason Merrill
2014-08-29 9:09 ` Richard Biener
2014-09-03 17:55 ` Aldy Hernandez
2014-09-04 10:42 ` Richard Biener
2014-09-05 2:38 ` Aldy Hernandez
2014-09-05 9:00 ` Richard Biener
2014-09-09 0:01 ` Aldy Hernandez
2014-09-09 9:16 ` Richard Biener
2014-09-12 0:51 ` Aldy Hernandez
2014-09-12 8:13 ` Richard Biener
2014-09-12 15:15 ` Jason Merrill
2014-09-12 17:11 ` Aldy Hernandez
2014-09-12 17:33 ` Jason Merrill
2014-09-12 17:48 ` Aldy Hernandez
2014-09-12 17:56 ` Jason Merrill
2014-09-16 15:49 ` Aldy Hernandez
2014-09-15 9:32 ` Richard Biener
2014-09-15 18:46 ` Jason Merrill
2014-12-18 19:26 ` Aldy Hernandez
2014-12-19 11:20 ` Richard Biener
2014-12-19 18:58 ` Jan Hubicka
2014-12-19 19:01 ` Jan Hubicka
2014-12-19 19:02 ` Aldy Hernandez
2014-12-19 19:31 ` Jason Merrill
2014-12-19 19:50 ` Jan Hubicka
2014-12-20 10:09 ` Aldy Hernandez
2015-01-08 12:24 ` Richard Biener
2014-12-19 19:03 ` Aldy Hernandez
2014-09-04 17:53 ` H.J. Lu
2014-09-04 17:54 ` Aldy Hernandez
2014-09-04 18:23 ` Richard Biener
2014-09-04 18:35 ` Aldy Hernandez
2014-09-04 18:38 ` Christophe Lyon
2014-09-04 19:42 ` Jan-Benedict Glaw
2015-01-08 15:20 Aldy Hernandez
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