MIPS R6 supports unaligned memory access and does not have
the load/store-left/right family of instructions.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
Signed-off-by: Luca Barbato <lu_zero at gentoo.org>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Shivraj Patil <shivraj.patil@imgtec.com>
Reviewed-by: Nedeljko Babic <Nedeljko.Babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Just like gcc 4.6 and later on ARM, gcc 4.8 on MIPS generates
inefficient code when a known-unaligned location is used as a
memory input operand.  This applies the same fix as has been
previously done to the ARM version of the code.
Signed-off-by: Mans Rullgard <mans@mansr.com>

GCC actually handles unaligned accesses correctly in all cases
except, absurdly, 32-bit loads on mips64.  The remaining asm is
thus not needed, and removing it results in better code.
Signed-off-by: Mans Rullgard <mans@mansr.com>

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

(cherry picked from commit 7a5a168a)

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

Originally committed as revision 19660 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18980 to svn://svn.ffmpeg.org/ffmpeg/trunk