PING^2
On 09/14/2017 02:20 PM, Martin Liška wrote:
> PING^1
>
> On 08/30/2017 11:45 AM, Martin Liška wrote:
>> Hi.
>>
>> This is follow up which I've just noticed. Main problem we have is that
>> an instrumented compiler w/ -fprofile-generate (built in $OBJDIR/gcc
>> subfolder)
>> will generate all *.gcda files in a same dir as *.o files. That's problematic
>> because we then have *.gcda files spread in 'profile' subfolder (because
>> profile'
>> compiler builds libgcc) and 'train' subfolder. Eventually in 'feedback' stage
>> we don't load any *.gcda files :/
>>
>> Well I really hope we need to set -fprofile-generate=$folder to a $folder.
>> There comes
>> second problem: all *.gcda files are created as $folder/$aux_base_name.gcda
>> which makes
>> it useless as we multiple same file names:
>>
>> $ find . -name expr.c
>> ./libcpp/expr.c
>> ./gcc/expr.c
>>
>> Thus I suggest patch #0001 that appends full path of current work dir. Patch
>> #0002 sets
>> a folder for PGO bootstrap. So far so good with a small exception:
>> conftest.gcda files
>> that trigger -Wcoverage-mismatch. Can we remove these before a stage? Do we
>> do a similar
>> thing somewhere?
>>
>> Thoughts?
>> Thanks,
>> Martin
>>
>
