On 8/1/19 4:21 PM, Richard Biener wrote:
> On Thu, Aug 1, 2019 at 3:10 PM Martin Liška <mli...@suse.cz> wrote:
>>
>> Hi.
>>
>> In LTO WPA mode we don't have to append temp file name
>> to the global cdtor function names.
>
> Is that true? You can link with -r -flinker-output=rel and use
> multiple WPA phases whose results you then finally link.
>
> So I don't think it's that easy. You might be able to look at
> all_translation_units, pick the one with a sensible name
Ah, I see.
> (hmm, not sure if we actually have a name there) and the lowest
> UID and use that? Thus, make the set of involved source files
> known and pick one. Ah,
>
> struct GTY(()) tree_translation_unit_decl {
> struct tree_decl_common common;
> /* Source language of this translation unit. Used for DWARF output. */
> const char * GTY((skip(""))) language;
> /* TODO: Non-optimization used to build this translation unit. */
> /* TODO: Root of a partial DWARF tree for global types and decls. */
> };
>
> so you might be able to get at a filename via the decls location,
> I'm not sure. Do we have any LTO records per "input file" where we
> can stream main_input_filename to?
Honza, can you help us with this?
Thanks,
Martin
>
>> It helps to have a reproducible
>> builds with LTO mode.
>>
>> Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
>>
>> Ready to be installed?
>> Thanks,
>> Martin
>>
>> gcc/ChangeLog:
>>
>> 2019-08-01 Martin Liska <mli...@suse.cz>
>>
>> PR lto/91307
>> * tree.c (get_file_function_name): Use "wpa" when
>> we are in WPA LTO mode.
>> ---
>> gcc/tree.c | 17 +++++++++++------
>> 1 file changed, 11 insertions(+), 6 deletions(-)
>>
>>
