x86: allow using add_hfyu_median_prediction_cmov on any cpu with cmov
authorMans Rullgard <mans@mansr.com>
Sun, 2 Sep 2012 15:05:56 +0000 (16:05 +0100)
committerMans Rullgard <mans@mansr.com>
Fri, 7 Sep 2012 10:42:35 +0000 (11:42 +0100)
For some reason add_hfyu_median_prediction_cmov is only selected
on 3Dnow-capable CPUs, even though it uses no 3Dnow instructions.
This patch allows it to be selected on any cpu with cmov with the
possibility of being overridden by the mmxext version.

Signed-off-by: Mans Rullgard <mans@mansr.com>
libavcodec/x86/dsputil_mmx.c

index 9a3cb4931ec750ce3571ab86249ef169510d2c6e..0876ceac9b19c3232d3a57b9a024b23f33b0bc66 100644 (file)
@@ -2717,7 +2717,9 @@ static void dsputil_init_mmx2(DSPContext *c, AVCodecContext *avctx,
         c->avg_h264_chroma_pixels_tab[1] = ff_avg_h264_chroma_mc4_10_mmx2;
     }
 
-    c->add_hfyu_median_prediction   = ff_add_hfyu_median_prediction_mmx2;
+    /* slower than cmov version on AMD */
+    if (!(mm_flags & AV_CPU_FLAG_3DNOW))
+        c->add_hfyu_median_prediction = ff_add_hfyu_median_prediction_mmx2;
 
     c->scalarproduct_int16          = ff_scalarproduct_int16_mmx2;
     c->scalarproduct_and_madd_int16 = ff_scalarproduct_and_madd_int16_mmx2;
@@ -2794,11 +2796,6 @@ static void dsputil_init_3dnow(DSPContext *c, AVCodecContext *avctx,
     }
 
     c->vorbis_inverse_coupling = vorbis_inverse_coupling_3dnow;
-
-#if HAVE_7REGS
-    if (mm_flags & AV_CPU_FLAG_CMOV)
-        c->add_hfyu_median_prediction = add_hfyu_median_prediction_cmov;
-#endif
 #endif /* HAVE_INLINE_ASM */
 
 #if HAVE_YASM
@@ -3009,6 +3006,11 @@ void ff_dsputil_init_mmx(DSPContext *c, AVCodecContext *avctx)
 {
     int mm_flags = av_get_cpu_flags();
 
+#if HAVE_7REGS && HAVE_INLINE_ASM
+    if (mm_flags & AV_CPU_FLAG_CMOV)
+        c->add_hfyu_median_prediction = add_hfyu_median_prediction_cmov;
+#endif
+
     if (mm_flags & AV_CPU_FLAG_MMX) {
 #if HAVE_INLINE_ASM
         const int idct_algo = avctx->idct_algo;