From 1f7558949f54b65d233c45f4597e5e62b01f909f Mon Sep 17 00:00:00 2001
From: hkuang <hkuang@google.com>
Date: Wed, 12 Mar 2014 11:22:49 -0700
Subject: [PATCH] Remove the vp8_vpxyv12_copy_y_neon.

vp8_vpxyv12_copy_y_neon is slower than vp8_vpxyv12_copy_y_c.

Change-Id: I7ba860619dc0714d700f232242ce915620461587
---
 .../arm/neon/vp8_vpxyv12_copy_y_neon.asm      | 123 ------------------
 vpx_scale/vpx_scale.mk                        |   1 -
 2 files changed, 124 deletions(-)
 delete mode 100644 vpx_scale/arm/neon/vp8_vpxyv12_copy_y_neon.asm

diff --git a/vpx_scale/arm/neon/vp8_vpxyv12_copy_y_neon.asm b/vpx_scale/arm/neon/vp8_vpxyv12_copy_y_neon.asm
deleted file mode 100644
index d070a476b..000000000
--- a/vpx_scale/arm/neon/vp8_vpxyv12_copy_y_neon.asm
+++ /dev/null
@@ -1,123 +0,0 @@
-;
-;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
-;
-;  Use of this source code is governed by a BSD-style license
-;  that can be found in the LICENSE file in the root of the source
-;  tree. An additional intellectual property rights grant can be found
-;  in the file PATENTS.  All contributing project authors may
-;  be found in the AUTHORS file in the root of the source tree.
-;
-
-
-    EXPORT  |vpx_yv12_copy_y_neon|
-
-    ARM
-    REQUIRE8
-    PRESERVE8
-
-    INCLUDE vpx_scale_asm_offsets.asm
-
-    AREA ||.text||, CODE, READONLY, ALIGN=2
-
-;void vpx_yv12_copy_y_neon(const YV12_BUFFER_CONFIG *src_ybc,
-;                          YV12_BUFFER_CONFIG *dst_ybc)
-|vpx_yv12_copy_y_neon| PROC
-    push            {r4 - r11, lr}
-    vpush           {d8-d15}
-
-    ldr             r4, [r0, #yv12_buffer_config_y_height]
-    ldr             r5, [r0, #yv12_buffer_config_y_width]
-    ldr             r6, [r0, #yv12_buffer_config_y_stride]
-    ldr             r7, [r1, #yv12_buffer_config_y_stride]
-    ldr             r2, [r0, #yv12_buffer_config_y_buffer]       ;srcptr1
-    ldr             r3, [r1, #yv12_buffer_config_y_buffer]       ;dstptr1
-
-    ; copy two rows at one time
-    mov             lr, r4, lsr #1
-
-cp_src_to_dst_height_loop1
-    mov             r8, r2
-    mov             r9, r3
-    add             r10, r2, r6
-    add             r11, r3, r7
-    movs            r12, r5, lsr #7
-    ble             extra_copy_needed   ; y_width < 128
-
-cp_src_to_dst_width_loop1
-    vld1.8          {q0, q1}, [r8]!
-    vld1.8          {q8, q9}, [r10]!
-    vld1.8          {q2, q3}, [r8]!
-    vld1.8          {q10, q11}, [r10]!
-    vld1.8          {q4, q5}, [r8]!
-    vld1.8          {q12, q13}, [r10]!
-    vld1.8          {q6, q7}, [r8]!
-    vld1.8          {q14, q15}, [r10]!
-
-    subs            r12, r12, #1
-
-    vst1.8          {q0, q1}, [r9]!
-    vst1.8          {q8, q9}, [r11]!
-    vst1.8          {q2, q3}, [r9]!
-    vst1.8          {q10, q11}, [r11]!
-    vst1.8          {q4, q5}, [r9]!
-    vst1.8          {q12, q13}, [r11]!
-    vst1.8          {q6, q7}, [r9]!
-    vst1.8          {q14, q15}, [r11]!
-
-    bne             cp_src_to_dst_width_loop1
-
-    subs            lr, lr, #1
-    add             r2, r2, r6, lsl #1
-    add             r3, r3, r7, lsl #1
-
-    bne             cp_src_to_dst_height_loop1
-
-extra_copy_needed
-    ands            r10, r5, #0x7f                  ;check to see if extra copy is needed
-    sub             r11, r5, r10
-    ldr             r2, [r0, #yv12_buffer_config_y_buffer]       ;srcptr1
-    ldr             r3, [r1, #yv12_buffer_config_y_buffer]       ;dstptr1
-    bne             extra_cp_src_to_dst_width1
-end_of_cp_src_to_dst1
-
-    vpop            {d8 - d15}
-    pop             {r4-r11, pc}
-
-;=============================
-extra_cp_src_to_dst_width1
-    add             r2, r2, r11
-    add             r3, r3, r11
-    add             r0, r8, r6
-    add             r11, r9, r7
-
-    mov             lr, r4, lsr #1
-extra_cp_src_to_dst_height_loop1
-    mov             r8, r2
-    mov             r9, r3
-    add             r0, r8, r6
-    add             r11, r9, r7
-
-    mov             r12, r10
-
-extra_cp_src_to_dst_width_loop1
-    vld1.8          {q0}, [r8]!
-    vld1.8          {q1}, [r0]!
-
-    subs            r12, r12, #16
-
-    vst1.8          {q0}, [r9]!
-    vst1.8          {q1}, [r11]!
-    bne             extra_cp_src_to_dst_width_loop1
-
-    subs            lr, lr, #1
-
-    add             r2, r2, r6, lsl #1
-    add             r3, r3, r7, lsl #1
-
-    bne             extra_cp_src_to_dst_height_loop1
-
-    b               end_of_cp_src_to_dst1
-
-    ENDP
-
-    END
diff --git a/vpx_scale/vpx_scale.mk b/vpx_scale/vpx_scale.mk
index 51a0ec93c..ded8e0b76 100644
--- a/vpx_scale/vpx_scale.mk
+++ b/vpx_scale/vpx_scale.mk
@@ -11,7 +11,6 @@ SCALE_SRCS-yes += vpx_scale_rtcd.pl
 
 #neon
 SCALE_SRCS-$(HAVE_NEON)  += arm/neon/vp8_vpxyv12_copyframe_func_neon$(ASM)
-SCALE_SRCS-$(HAVE_NEON)  += arm/neon/vp8_vpxyv12_copy_y_neon$(ASM)
 SCALE_SRCS-$(HAVE_NEON)  += arm/neon/vp8_vpxyv12_copysrcframe_func_neon$(ASM)
 SCALE_SRCS-$(HAVE_NEON)  += arm/neon/vp8_vpxyv12_extendframeborders_neon$(ASM)
 SCALE_SRCS-$(HAVE_NEON)  += arm/neon/yv12extend_arm.c