[Bug 729276] audioresample: Misdetected and/or misused intrinsics headers

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=729276
  GStreamer | gst-plugins-base | 1.x

LRN <lrn1986> changed:

           What    |Removed                     |Added
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                 CC|                            |lrn1986 at gmail.com

--- Comment #3 from LRN <lrn1986 at gmail.com> 2014-05-09 08:03:29 UTC ---
What i've been told initially is that you should isolate SSE-, MMX- and any
other extended-instruction-using code into separate source files, compile them
with appropriate compiler options, and make sure that *any* functions from
these files are only called if runtime CPU detection permits.
I suspect that for some cases (such as code from speex) this is not very
convenient.

I raised this issue again today, here's what i've got:

ktietz:    I can't do much about gcc's intrinsic header
ktietz:    the compromize I suggest is to use instead intrin.h header and
omitting direct use of gcc's intrin-headers
LRN:    isn't intrin.h MS-specific?
ktietz:    well, it is a standard header present in our runtime for exactly
such issues
ktietz:    if user insist to use directly the intrin-headers provided by gcc,
then they have to deal with the bugs there themself
LRN:    well, GStreamer code is hardly W32-only, so i somehow doubt that they
would like to rely on W32-only header for such things...
ktietz:    well, the issues reported here aren't W-specific AFAICS
ktietz:    so at least they need to guard the use of those headers

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