Martin Storsjö
7ec2354c38
x86: Remove inline MMX assembly that clobbers the FPU state ...
These inline implementations of AV_COPY64, AV_SWAP64 and AV_ZERO64
are known to clobber the FPU state - which has to be restored
with the 'emms' instruction afterwards.
This was known and signaled with the FF_COPY_SWAP_ZERO_USES_MMX
define, which calling code seems to have been supposed to check,
in order to call emms_c() after using them. See
0b1972d4096df5879038f0af776f87f41e90ebd4,
29c4c0886d143790fcbeddbe40a23dfc6f56345c and
df215e575850e41b19aeb1fd99e53372a6b3d537 for history on earlier
fixes in the same area.
However, new code can use these AV_*64() macros without knowing
about the need to call emms_c().
Just get rid of these dangerous inline assembly snippets; this
doesn't make any difference for 64 bit architectures anyway.
Signed-off-by: Martin Storsjö <martin@martin.st>
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7ec2354c38