Le 15 novembre 2024 12:56:23 GMT+02:00, Zhao Zhili <quinkbl...@foxmail.com> a écrit : >From: Zhao Zhili <zhiliz...@tencent.com> > >_Alignas is portable than compiler's specific __attribute__. It do >have a limitation, that _Alignas don't support specify aligment on >the declarations of struct (it works for specify alignment on struct >fields), > which only used by avcodec/cavs, and is removed now.
IIRC, _Alignas() is deprecated by C23. Can't we use the proper c11/c23 alignas() instead? >--- > libavutil/mem_internal.h | 26 +++++++------------------- > 1 file changed, 7 insertions(+), 19 deletions(-) > >diff --git a/libavutil/mem_internal.h b/libavutil/mem_internal.h >index 20f9b3e3f2..b77157bfa0 100644 >--- a/libavutil/mem_internal.h >+++ b/libavutil/mem_internal.h >@@ -73,26 +73,14 @@ > * @param v Name of the variable > */ > >-#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || >defined(__SUNPRO_C) >- #define DECLARE_ALIGNED_T(n,t,v) t __attribute__ ((aligned (n))) v >- #define DECLARE_ASM_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v >- #define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) >v >-#elif defined(__DJGPP__) >- #define DECLARE_ALIGNED_T(n,t,v) t __attribute__ ((aligned (FFMIN(n, >16)))) v >- #define DECLARE_ASM_ALIGNED(n,t,v) t av_used __attribute__ ((aligned >(FFMIN(n, 16)))) v >- #define DECLARE_ASM_CONST(n,t,v) static const t av_used __attribute__ >((aligned (FFMIN(n, 16)))) v >-#elif defined(__GNUC__) || defined(__clang__) >- #define DECLARE_ALIGNED_T(n,t,v) t __attribute__ ((aligned (n))) v >- #define DECLARE_ASM_ALIGNED(n,t,v) t av_used __attribute__ ((aligned >(n))) v >- #define DECLARE_ASM_CONST(n,t,v) static const t av_used __attribute__ >((aligned (n))) v >-#elif defined(_MSC_VER) >- #define DECLARE_ALIGNED_T(n,t,v) __declspec(align(n)) t v >- #define DECLARE_ASM_ALIGNED(n,t,v) __declspec(align(n)) t v >- #define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v >+#if defined(__DJGPP__) >+ #define DECLARE_ALIGNED_T(n,t,v) _Alignas(FFMIN(n, 16)) t v >+ #define DECLARE_ASM_ALIGNED(n,t,v) _Alignas(FFMIN(n, 16)) t av_used v >+ #define DECLARE_ASM_CONST(n,t,v) _Alignas(FFMIN(n, 16)) static const t >av_used v > #else >- #define DECLARE_ALIGNED_T(n,t,v) t v >- #define DECLARE_ASM_ALIGNED(n,t,v) t v >- #define DECLARE_ASM_CONST(n,t,v) static const t v >+ #define DECLARE_ALIGNED_T(n,t,v) _Alignas(n) t v >+ #define DECLARE_ASM_ALIGNED(n,t,v) _Alignas(n) t av_used v >+ #define DECLARE_ASM_CONST(n,t,v) _Alignas(n) static const t av_used v > #endif > > #if HAVE_SIMD_ALIGN_64 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
