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x86inc: remove misaligned cpu flag

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Prevents a crash if the misaligned exception mask bit is
cleared for some reason.

Misaligned SSE functions are only used on AMD Phenom CPUs
and the benefit is miniscule. They also require modifying
the MXCSR control register and by removing those functions
we can get rid of that complexity altogether.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Henrik Gramner 2013-09-11 17:49:29 +02:00 committed by Derek Buitenhuis
parent 7115566541
commit 3e2fa991db
1 changed files with 4 additions and 5 deletions
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9
libavutil/x86/x86inc.asm
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@ -757,11 +757,10 @@ SECTION .note.GNU-stack noalloc noexec nowrite progbits
%assign cpuflags_cache64 (1<<17)
%assign cpuflags_slowctz (1<<18)
%assign cpuflags_lzcnt (1<<19)
%assign cpuflags_misalign (1<<20)
%assign cpuflags_aligned (1<<21) ; not a cpu feature, but a function variant
%assign cpuflags_atom (1<<22)
%assign cpuflags_bmi1 (1<<23)|cpuflags_lzcnt
%assign cpuflags_bmi2 (1<<24)|cpuflags_bmi1
%assign cpuflags_aligned (1<<20) ; not a cpu feature, but a function variant
%assign cpuflags_atom (1<<21)
%assign cpuflags_bmi1 (1<<22)|cpuflags_lzcnt
%assign cpuflags_bmi2 (1<<23)|cpuflags_bmi1
%define cpuflag(x) ((cpuflags & (cpuflags_ %+ x)) == (cpuflags_ %+ x))
%define notcpuflag(x) ((cpuflags & (cpuflags_ %+ x)) != (cpuflags_ %+ x))