[LLVMdev] Help needed on debugging llvm

[Anitha B Gollamudi]

On 13 March 2013 09:54, Craig Topper <craig.topper at gmail.com> wrote:
> Can you send the binaries compiled with and without the integrated
> assembler. Maybe I can figure out the encoding problem. I've been
> unsuccessful figuring it out myself so far.
>

Attached in http://llvm.org/bugs/show_bug.cgi?id=14185#c15

-Anitha

>
> On Tue, Mar 12, 2013 at 12:34 AM, Anitha B Gollamudi
> <anitha.boyapati at gmail.com> wrote:
>>
>> On 12 March 2013 09:51, Craig Topper <craig.topper at gmail.com> wrote:
>> > I'm still slightly confused. Is the error now fixed or is there still a
>> > bug
>> > in LLVM's integrated assembler?
>> >
>>
>> The error is not fixed yet (even with fix mentioned in PR15040
>> http://llvm.org/bugs/show_bug.cgi?id=15040#c4)
>>
>> With the updated trunk, clang still gives an error when FMA4 is
>> enabled but does fine when -no-integrated-as is used. So that's a bug
>> with LLVM's integrated assembler.
>>
>> On a related note,  r173176 mentioned in
>> http://llvm.org/bugs/show_bug.cgi?id=15282  does not fix the gromacs
>> miscompare error either. However -no-integrated-as helps in all cases.
>>
>> I am not sure if  r173176 is incomplete or the issue is something else.
>>
>>
>>
>> -Anitha
>>
>>
>> >
>> > On Mon, Mar 11, 2013 at 4:49 AM, Anitha B Gollamudi
>> > <anitha.boyapati at gmail.com> wrote:
>> >>
>> >> On 11 March 2013 17:00, Duncan Sands <baldrick at free.fr> wrote:
>> >> > Hi Anitha,
>> >> >
>> >> >
>> >> >> Ah, I am taking back my above words w.r.t encoding.
>> >> >> -no-integrated-as
>> >> >> does fix the issue! This definitely points towards FMA4 encoding in
>> >> >> clang's integrated assembler. This fits into the analysis as well -
>> >> >> dragonegg *might not* be using integrated assembler at all.
>> >> >
>> >> >
>> >> > you are right, dragonegg does not use the integrated assembler.
>> >>
>> >> Thanks for the confirmation Duncan. The bug turned out to be a hard
>> >> nut. I have taken assembler for granted.
>> >>
>> >> -Anitha
>> >
>> >
>> >
>> >
>> > --
>> > ~Craig
>>
>>
>>
>> --
>>  Anitha
>
>
>
>
> --
> ~Craig



-- 
 Anitha