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avcodec/vc1dsp: always inline vc1_loop_filter

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vc1_loop_filter() is only reached through the six C wrappers. Clang 14
keeps it out of line with plain static inline, adding a 224-byte stack
frame before the tiny bestcase path on rpi 5. gcc 12 already inlines
it.

rpi 5 clang 14:
                                before  after
vc1_v_loop_filter4_bestcase_c   27.2     8.3   (3.3x)
vc1_h_loop_filter4_bestcase_c   26.4    10.2   (2.6x)
vc1_v_loop_filter8_bestcase_c   32.5    20.3   (1.6x)
vc1_h_loop_filter8_bestcase_c   31.7    19.5   (1.6x)
vc1_v_loop_filter16_bestcase_c  42.1    33.2   (1.3x)
vc1_h_loop_filter16_bestcase_c  41.6    25.3   (1.6x)

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
This commit is contained in:
Zhao Zhili
2026-05-15 21:56:53 +08:00
committed by Zhao Zhili
parent 200914853d
commit 520968debb
1 changed files with 2 additions and 2 deletions
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4
libavcodec/vc1dsp.c
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@@ -196,8 +196,8 @@ static av_always_inline int vc1_filter_line(uint8_t *src, ptrdiff_t stride, int
* @param pq block quantizer
* @see 8.6
*/
static inline void vc1_loop_filter(uint8_t *src, ptrdiff_t step, ptrdiff_t stride,
int len, int pq)
static av_always_inline void vc1_loop_filter(uint8_t *src, ptrdiff_t step,
ptrdiff_t stride, int len, int pq)
{
int i;
int filt3;