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| author | Henrik Gramner <henrik@gramner.com> | 2013-09-11 17:49:26 +0200 |
|---|---|---|
| committer | Derek Buitenhuis <derek.buitenhuis@gmail.com> | 2013-10-07 06:25:35 -0400 |
| commit | bbe4a6db44f0b55b424a5cc9d3e89cd88e250450 (patch) | |
| tree | 868ade1083707ea830a8514c093640be5147f5f1 /libavcodec/x86/fft.asm | |
| parent | 3fb78e99a04d0ed8db834d813d933eb86c37142a (diff) | |
| download | ffmpeg-bbe4a6db44f0b55b424a5cc9d3e89cd88e250450.tar.gz | |
x86inc: Utilize the shadow space on 64-bit Windows
Store XMM6 and XMM7 in the shadow space in functions that
clobbers them. This way we don't have to adjust the stack
pointer as often, reducing the number of instructions as
well as code size.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Diffstat (limited to 'libavcodec/x86/fft.asm')
| -rw-r--r-- | libavcodec/x86/fft.asm | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/x86/fft.asm b/libavcodec/x86/fft.asm index c87752bae8..e4744a3b60 100644 --- a/libavcodec/x86/fft.asm +++ b/libavcodec/x86/fft.asm @@ -667,13 +667,13 @@ cglobal imdct_calc, 3,5,3 push r1 push r0 %else - sub rsp, 8 + sub rsp, 8+32*WIN64 ; allocate win64 shadow space %endif call r4 %if ARCH_X86_32 add esp, 12 %else - add rsp, 8 + add rsp, 8+32*WIN64 %endif POP r1 POP r3 |