[FFmpeg-devel] [PATCH V2] Fixes compiler bug - replace vec_lvsl/vec_perm with vec_xl

[Carl Eugen Hoyos]

> Am 12.08.2019 um 16:21 schrieb ckerchne <ckerchne at linux.vnet.ibm.com>:
> 
> How do I get someone to look at this patch?
> 
>> A bug exist with the gcc compilers for Power in versions 6.x and 7.x
>> (verified with 6.3 and 7.4). It was fixed in version 8.x (verified
>> with 8.3). I was using a Power 9 ppc64le machine for building and
>> testing.
>> This is to address ticket #7124.
>> It appears the compiler is generating the wrong code for little endian
>> machines for the vec_lvsl/vec_perm instruction combos in some cases.
>> If these instructions are replaced with vec_xl, the problem goes away
>> for all versions of the compilers.

As said, this commit message is not ok, please add information on how the issue can actually be reproduced.

And please avoid top-posting here.

Carl Eugen