[FFmpeg-cvslog] x86: Only use optimizations with cmov if the CPU supports the instruction

Diego Biurrun git at videolan.org
Sun Jun 24 02:20:47 CEST 2012


ffmpeg | branch: master | Diego Biurrun <diego at biurrun.de> | Tue Jun 19 12:55:10 2012 +0200| [fe07c9c6b5a870b8f2ffcfac649228b4d76e9505] | committer: Diego Biurrun

x86: Only use optimizations with cmov if the CPU supports the instruction

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fe07c9c6b5a870b8f2ffcfac649228b4d76e9505
---

 libavcodec/x86/dsputil_mmx.c         |    3 ++-
 libavcodec/x86/h264_intrapred_init.c |    3 ++-
 libavcodec/x86/h264dsp_mmx.c         |    3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/libavcodec/x86/dsputil_mmx.c b/libavcodec/x86/dsputil_mmx.c
index 71a65e7..b695bd2 100644
--- a/libavcodec/x86/dsputil_mmx.c
+++ b/libavcodec/x86/dsputil_mmx.c
@@ -2829,7 +2829,8 @@ static void dsputil_init_3dnow(DSPContext *c, AVCodecContext *avctx,
     c->vorbis_inverse_coupling = vorbis_inverse_coupling_3dnow;
 
 #if HAVE_7REGS
-    c->add_hfyu_median_prediction = add_hfyu_median_prediction_cmov;
+    if (mm_flags & AV_CPU_FLAG_CMOV)
+        c->add_hfyu_median_prediction = add_hfyu_median_prediction_cmov;
 #endif
 }
 
diff --git a/libavcodec/x86/h264_intrapred_init.c b/libavcodec/x86/h264_intrapred_init.c
index 41e611e..6bad969 100644
--- a/libavcodec/x86/h264_intrapred_init.c
+++ b/libavcodec/x86/h264_intrapred_init.c
@@ -188,7 +188,8 @@ void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, const int bit_depth
                 if (chroma_format_idc == 1)
                     h->pred8x8  [PLANE_PRED8x8] = ff_pred8x8_plane_mmx;
                 if (codec_id == CODEC_ID_SVQ3) {
-                    h->pred16x16[PLANE_PRED8x8] = ff_pred16x16_plane_svq3_mmx;
+                    if (mm_flags & AV_CPU_FLAG_CMOV)
+                        h->pred16x16[PLANE_PRED8x8] = ff_pred16x16_plane_svq3_mmx;
                 } else if (codec_id == CODEC_ID_RV40) {
                     h->pred16x16[PLANE_PRED8x8] = ff_pred16x16_plane_rv40_mmx;
                 } else {
diff --git a/libavcodec/x86/h264dsp_mmx.c b/libavcodec/x86/h264dsp_mmx.c
index dcd9180..c0a40c4 100644
--- a/libavcodec/x86/h264dsp_mmx.c
+++ b/libavcodec/x86/h264dsp_mmx.c
@@ -361,7 +361,8 @@ void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, const int chrom
         if (chroma_format_idc == 1)
             c->h264_idct_add8       = ff_h264_idct_add8_8_mmx;
         c->h264_idct_add16intra     = ff_h264_idct_add16intra_8_mmx;
-        c->h264_luma_dc_dequant_idct= ff_h264_luma_dc_dequant_idct_mmx;
+        if (mm_flags & AV_CPU_FLAG_CMOV)
+            c->h264_luma_dc_dequant_idct = ff_h264_luma_dc_dequant_idct_mmx;
 
         if (mm_flags & AV_CPU_FLAG_MMX2) {
             c->h264_idct_dc_add    = ff_h264_idct_dc_add_8_mmx2;



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