[x265] [PATCH] asm : chroma_hps[16x16]for i420 avx2 - improved 1624c->1093c

[aasaipriya at multicorewareinc.com]

# HG changeset patch
# User Aasaipriya Chandran <aasaipriya at multicorewareinc.com>
# Date 1426049966 -19800
#      Wed Mar 11 10:29:26 2015 +0530
# Node ID 8bc10baea6d6cbdb15cb9d50d7e98c1560dd5324
# Parent  eef4d7707d47af449f84d40a7a4ac20d2fe81ebf
asm : chroma_hps[16x16]for i420 avx2 - improved 1624c->1093c

diff -r eef4d7707d47 -r 8bc10baea6d6 source/common/x86/asm-primitives.cpp
--- a/source/common/x86/asm-primitives.cpp	Wed Mar 11 10:26:53 2015 +0530
+++ b/source/common/x86/asm-primitives.cpp	Wed Mar 11 10:29:26 2015 +0530
@@ -1576,6 +1576,7 @@
         p.chroma[X265_CSP_I420].pu[CHROMA_420_16x16].filter_hpp = x265_interp_4tap_horiz_pp_16x16_avx2;
 
         p.chroma[X265_CSP_I420].pu[CHROMA_420_32x32].filter_hps = x265_interp_4tap_horiz_ps_32x32_avx2;
+        p.chroma[X265_CSP_I420].pu[CHROMA_420_16x16].filter_hps = x265_interp_4tap_horiz_ps_16x16_avx2;
 
         p.chroma[X265_CSP_I422].pu[CHROMA_422_4x4].filter_vpp = x265_interp_4tap_vert_pp_4x4_avx2;
 
diff -r eef4d7707d47 -r 8bc10baea6d6 source/common/x86/ipfilter8.asm
--- a/source/common/x86/ipfilter8.asm	Wed Mar 11 10:26:53 2015 +0530
+++ b/source/common/x86/ipfilter8.asm	Wed Mar 11 10:29:26 2015 +0530
@@ -14467,3 +14467,56 @@
     dec               r6d
     jnz                .loop
    RET
+
+;-----------------------------------------------------------------------------------------------------------------------------
+; void interp_4tap_horiz_ps_16x16(pixel *src, intptr_t srcStride, int16_t *dst, intptr_t dstStride, int coeffIdx, int isRowExt)
+;-----------------------------------------------------------------------------------------------------------------------------;
+INIT_YMM avx2 
+cglobal interp_4tap_horiz_ps_16x16, 4,7,6
+    mov             r4d, r4m
+    mov             r5d, r5m
+    add             r3d, r3d
+
+%ifdef PIC
+    lea               r6,           [tab_ChromaCoeff]
+    vpbroadcastd      m0,           [r6 + r4 * 4]
+%else
+    vpbroadcastd      m0,           [tab_ChromaCoeff + r4 * 4]
+%endif
+
+    vbroadcasti128     m2,           [pw_1]
+    vbroadcasti128     m5,           [pw_2000]
+    mova               m1,           [tab_Tm]
+
+    ; register map
+    ; m0 - interpolate coeff
+    ; m1 - shuffle order table
+    ; m2 - constant word 1
+    mov                r6d,         16
+    dec                r0
+    test                r5d,        r5d
+    je                 .loop
+    sub                r0 ,         r1
+    add                r6d ,        3
+
+.loop
+    ; Row 0
+    vbroadcasti128    m3,           [r0]                        ; [x x x x x A 9 8 7 6 5 4 3 2 1 0]
+    pshufb            m3,           m1
+    pmaddubsw         m3,           m0
+    pmaddwd           m3,           m2
+    vbroadcasti128    m4,           [r0 + 8]
+    pshufb            m4,           m1
+    pmaddubsw         m4,           m0
+    pmaddwd           m4,           m2
+
+    packssdw          m3,           m4
+    psubw             m3,           m5
+    vpermq            m3,           m3,          11011000b
+    movu              [r2],         m3
+
+    add                r2,          r3
+    add                r0,          r1
+    dec                r6d
+    jnz                .loop
+   RET