[FFmpeg-cvslog] r10164 - trunk/libavcodec/i386/snowdsp_mmx.c

[michael]

Author: michael
Date: Tue Aug 21 02:02:19 2007
New Revision: 10164

Log:
Simplify and optimize the 4th vertical lifting step of the MMX code
This also reduces the needed headroom in that step by 1 bit


Modified:
   trunk/libavcodec/i386/snowdsp_mmx.c

Modified: trunk/libavcodec/i386/snowdsp_mmx.c
==============================================================================
--- trunk/libavcodec/i386/snowdsp_mmx.c	(original)
+++ trunk/libavcodec/i386/snowdsp_mmx.c	Tue Aug 21 02:02:19 2007
@@ -604,9 +604,8 @@ void ff_snow_vertical_compose97i_mmx(DWT
         snow_vertical_compose_mmx_store(REG_c,"mm0","mm2","mm4","mm6")
         snow_vertical_compose_mmx_add(REG_S,"mm0","mm2","mm4","mm6")
         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
-        snow_vertical_compose_mmx_r2r_add("mm0","mm2","mm4","mm6","mm0","mm2","mm4","mm6")
-        snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
         snow_vertical_compose_mmx_sra("1","mm0","mm2","mm4","mm6")
+        snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
         snow_vertical_compose_mmx_store(REG_a,"mm0","mm2","mm4","mm6")