[x265] [PATCH] Fixed 32 bit bug in intrapred dc4 sse2

[dtyx265 at gmail.com]

# HG changeset patch
# User David T Yuen <dtyx265 at gmail.com>
# Date 1424917924 28800
# Node ID 13346cb90bff040492f0688226f44182bb6b97d8
# Parent  74c716607444c77b9d5ea1dce5b99c875f0b20fe
Fixed 32 bit bug in intrapred dc4 sse2

Changed register written from to one that supports low byte access in 32 bit
Also moved pw_257 constant to const-a.asm

diff -r 74c716607444 -r 13346cb90bff source/common/x86/const-a.asm
--- a/source/common/x86/const-a.asm	Tue Feb 24 13:39:16 2015 +0530
+++ b/source/common/x86/const-a.asm	Wed Feb 25 18:32:04 2015 -0800
@@ -37,6 +37,7 @@
 const pw_32,       times 16 dw 32
 const pw_128,      times 16 dw 128
 const pw_256,      times 16 dw 256
+const pw_257,      times 16 dw 257
 const pw_512,      times 16 dw 512
 const pw_1023,     times 8  dw 1023
 const pw_1024,     times 16 dw 1024
diff -r 74c716607444 -r 13346cb90bff source/common/x86/intrapred8.asm
--- a/source/common/x86/intrapred8.asm	Tue Feb 24 13:39:16 2015 +0530
+++ b/source/common/x86/intrapred8.asm	Wed Feb 25 18:32:04 2015 -0800
@@ -65,8 +65,6 @@
 pw_planar32_L:        dw 31, 30, 29, 28, 27, 26, 25, 24
 pw_planar32_H:        dw 23, 22, 21, 20, 19, 18, 17, 16
 
-pw_257:         times 8 dw 257
-
 const ang_table
 %assign x 0
 %rep 32
@@ -80,6 +78,7 @@
 cextern pw_8
 cextern pw_16
 cextern pw_32
+cextern pw_257
 cextern pw_1024
 cextern pb_unpackbd1
 cextern multiL
@@ -144,12 +143,21 @@
     paddw       m2, m1
     psraw       m2, 2
     packuswb    m2, m2
+%if ARCH_X86_64
     movq        r4, m2
     mov         [r0], r4b
     shr         r4, 8
     mov         [r0 + r1], r4b
     shr         r4, 8
     mov         [r0 + r1 * 2], r4b
+%else
+    movd        r2d, m2
+    mov         [r0], r2b
+    shr         r2, 8
+    mov         [r0 + r1], r2b
+    shr         r2, 8
+    mov         [r0 + r1 * 2], r2b
+%endif
 .end:
     RET