# HG changeset patch
# User Praveen Tiwari <prav...@multicorewareinc.com>
# Date 1493905428 -19800
# Thu May 04 19:13:48 2017 +0530
# Node ID 41611825c2f4661536500e1306db7d8c4bf7fd07
# Parent 48502979a4b21f6982dcdacbf7796bf5d9fb395c
avx2: 'integral4v' asm code -> 7.48x faster than 'C' version
integral_init4v 7.48x 202.53 1515.14
diff -r 48502979a4b2 -r 41611825c2f4 source/common/x86/seaintegral.asm
--- a/source/common/x86/seaintegral.asm Wed May 03 11:26:26 2017 +0530
+++ b/source/common/x86/seaintegral.asm Thu May 04 19:13:48 2017 +0530
@@ -32,8 +32,19 @@
;void integral_init4v_c(uint32_t *sum4, intptr_t stride)
;-----------------------------------------------------------------------------
INIT_YMM avx2
-cglobal integral4v, 2, 2, 0
-
+cglobal integral4v, 2, 3, 2
+ mov r2, r1
+ shl r2, 4
+
+.loop
+ movu m0, [r0]
+ movu m1, [r0 + r2]
+ psubd m1, m0
+ movu [r0], m1
+ add r0, 32
+ sub r1, 8
+ cmp r1, 0
+ jnz .loop
RET
;-----------------------------------------------------------------------------
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