The were broken since August of 2010 without anyone noticing until
three weeks ago. Nobody cares about it anymore and hopefully Marvell
will support NEON like in the PXA978 from now on.

With these changes, gcc 4.5 and later recognise it as a bswap
and use the proper instructions on ARM and x86.  On x86, the
16-bit bswap is recognised from gcc 4.1.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Note, the other arm asm code is likely affected too and should be changed as well.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

This uses one register less.  Also add missing "cc" clobber.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

The volatile qualifiers are not needed on these statements as
their effects are fully specified by constraints.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

On some versions of gcc, these weren't always getting inlined due to hitting
the inline cap limit in some files.  This is generally bad, as most of these
functions are smaller inlined than not.
(cherry picked from commit eb3755a5)

On some versions of gcc, these weren't always getting inlined due to hitting
the inline cap limit in some files.  This is generally bad, as most of these
functions are smaller inlined than not.

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

This prevents gcc inserting useless UXTH instructions, at least
in some cases.

Originally committed as revision 25212 to svn://svn.ffmpeg.org/ffmpeg/trunk

Instead of defining functions in per-arch header files included
by the main cpu.c, define them normally and call them from the
generic one.

Originally committed as revision 25084 to svn://svn.ffmpeg.org/ffmpeg/trunk

function and rename it to av_get_cpu_flags().

Originally committed as revision 25076 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24170 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24089 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 24088 to svn://svn.ffmpeg.org/ffmpeg/trunk

This reduces the number of false dependencies on header files and
speeds up compilation.

Originally committed as revision 22407 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 22340 to svn://svn.ffmpeg.org/ffmpeg/trunk

This avoids unnecessary masking otherwise added by the compilers.

Originally committed as revision 21953 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21335 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 21278 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19656 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 19311 to svn://svn.ffmpeg.org/ffmpeg/trunk

ARMv6 and later support unaligned loads and stores for single
word/halfword but not double/multiple.  GCC is ignorant of this and
will always use bytewise accesses for unaligned data.  Casting to an
int32_t pointer is dangerous since a load/store double or multiple
instruction might be used (this happens with some code in FFmpeg).
Implementing the AV_[RW]* macros with inline asm using only supported
instructions gives fast and safe unaligned accesses.  ARM RVCT does
the right thing with generic code.

This gives an overall speedup of up to 10%.

Originally committed as revision 18601 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18305 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 17830 to svn://svn.ffmpeg.org/ffmpeg/trunk

They are now always defined to either 0 or 1.

Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 15663 to svn://svn.ffmpeg.org/ffmpeg/trunk