diff --git a/vp8/common/arm/neon/iwalsh_neon.asm b/vp8/common/arm/neon/iwalsh_neon.asm
deleted file mode 100644
index e8ea2a61976c8ff0c30a2150f8ec7a81ffea028b..0000000000000000000000000000000000000000
--- a/vp8/common/arm/neon/iwalsh_neon.asm
+++ /dev/null
@@ -1,87 +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 |vp8_short_inv_walsh4x4_neon|
-
- ARM
- REQUIRE8
- PRESERVE8
-
- AREA |.text|, CODE, READONLY ; name this block of code
-
-;short vp8_short_inv_walsh4x4_neon(short *input, short *mb_dqcoeff)
-|vp8_short_inv_walsh4x4_neon| PROC
-
- ; read in all four lines of values: d0->d3
- vld1.i16 {q0-q1}, [r0@128]
-
- ; first for loop
- vadd.s16 d4, d0, d3 ;a = [0] + [12]
- vadd.s16 d6, d1, d2 ;b = [4] + [8]
- vsub.s16 d5, d0, d3 ;d = [0] - [12]
- vsub.s16 d7, d1, d2 ;c = [4] - [8]
-
- vadd.s16 q0, q2, q3 ; a+b d+c
- vsub.s16 q1, q2, q3 ; a-b d-c
-
- vtrn.32 d0, d2 ;d0: 0 1 8 9
- ;d2: 2 3 10 11
- vtrn.32 d1, d3 ;d1: 4 5 12 13
- ;d3: 6 7 14 15
-
- vtrn.16 d0, d1 ;d0: 0 4 8 12
- ;d1: 1 5 9 13
- vtrn.16 d2, d3 ;d2: 2 6 10 14
- ;d3: 3 7 11 15
-
- ; second for loop
-
- vadd.s16 d4, d0, d3 ;a = [0] + [3]
- vadd.s16 d6, d1, d2 ;b = [1] + [2]
- vsub.s16 d5, d0, d3 ;d = [0] - [3]
- vsub.s16 d7, d1, d2 ;c = [1] - [2]
-
- vmov.i16 q8, #3
-
- vadd.s16 q0, q2, q3 ; a+b d+c
- vsub.s16 q1, q2, q3 ; a-b d-c
-
- vadd.i16 q0, q0, q8 ;e/f += 3
- vadd.i16 q1, q1, q8 ;g/h += 3
-
- vshr.s16 q0, q0, #3 ;e/f >> 3
- vshr.s16 q1, q1, #3 ;g/h >> 3
-
- mov r2, #64
- add r3, r1, #32
-
- vst1.i16 d0[0], [r1],r2
- vst1.i16 d1[0], [r3],r2
- vst1.i16 d2[0], [r1],r2
- vst1.i16 d3[0], [r3],r2
-
- vst1.i16 d0[1], [r1],r2
- vst1.i16 d1[1], [r3],r2
- vst1.i16 d2[1], [r1],r2
- vst1.i16 d3[1], [r3],r2
-
- vst1.i16 d0[2], [r1],r2
- vst1.i16 d1[2], [r3],r2
- vst1.i16 d2[2], [r1],r2
- vst1.i16 d3[2], [r3],r2
-
- vst1.i16 d0[3], [r1],r2
- vst1.i16 d1[3], [r3],r2
- vst1.i16 d2[3], [r1]
- vst1.i16 d3[3], [r3]
-
- bx lr
- ENDP ; |vp8_short_inv_walsh4x4_neon|
-
- END
diff --git a/vp8/common/arm/neon/iwalsh_neon.c b/vp8/common/arm/neon/iwalsh_neon.c
new file mode 100644
index 0000000000000000000000000000000000000000..6ea9dd712aaa3e0b83b6fea7a47ab401ffe43371
--- /dev/null
+++ b/vp8/common/arm/neon/iwalsh_neon.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2014 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.
+ */
+
+#include <arm_neon.h>
+
+void vp8_short_inv_walsh4x4_neon(
+ int16_t *input,
+ int16_t *mb_dqcoeff) {
+ int16x8_t q0s16, q1s16, q2s16, q3s16;
+ int16x4_t d4s16, d5s16, d6s16, d7s16;
+ int16x4x2_t v2tmp0, v2tmp1;
+ int32x2x2_t v2tmp2, v2tmp3;
+ int16x8_t qAdd3;
+
+ q0s16 = vld1q_s16(input);
+ q1s16 = vld1q_s16(input + 8);
+
+ // 1st for loop
+ d4s16 = vadd_s16(vget_low_s16(q0s16), vget_high_s16(q1s16));
+ d6s16 = vadd_s16(vget_high_s16(q0s16), vget_low_s16(q1s16));
+ d5s16 = vsub_s16(vget_low_s16(q0s16), vget_high_s16(q1s16));
+ d7s16 = vsub_s16(vget_high_s16(q0s16), vget_low_s16(q1s16));
+
+ q2s16 = vcombine_s16(d4s16, d5s16);
+ q3s16 = vcombine_s16(d6s16, d7s16);
+
+ q0s16 = vaddq_s16(q2s16, q3s16);
+ q1s16 = vsubq_s16(q2s16, q3s16);
+
+ v2tmp2 = vtrn_s32(vreinterpret_s32_s16(vget_low_s16(q0s16)),
+ vreinterpret_s32_s16(vget_low_s16(q1s16)));
+ v2tmp3 = vtrn_s32(vreinterpret_s32_s16(vget_high_s16(q0s16)),
+ vreinterpret_s32_s16(vget_high_s16(q1s16)));
+ v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]),
+ vreinterpret_s16_s32(v2tmp3.val[0]));
+ v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]),
+ vreinterpret_s16_s32(v2tmp3.val[1]));
+
+ // 2nd for loop
+ d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[1]);
+ d6s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ d5s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[1]);
+ d7s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[0]);
+ q2s16 = vcombine_s16(d4s16, d5s16);
+ q3s16 = vcombine_s16(d6s16, d7s16);
+
+ qAdd3 = vdupq_n_s16(3);
+
+ q0s16 = vaddq_s16(q2s16, q3s16);
+ q1s16 = vsubq_s16(q2s16, q3s16);
+
+ q0s16 = vaddq_s16(q0s16, qAdd3);
+ q1s16 = vaddq_s16(q1s16, qAdd3);
+
+ q0s16 = vshrq_n_s16(q0s16, 3);
+ q1s16 = vshrq_n_s16(q1s16, 3);
+
+ // store
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q0s16), 0);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q0s16), 0);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q1s16), 0);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q1s16), 0);
+ mb_dqcoeff += 16;
+
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q0s16), 1);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q0s16), 1);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q1s16), 1);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q1s16), 1);
+ mb_dqcoeff += 16;
+
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q0s16), 2);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q0s16), 2);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q1s16), 2);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q1s16), 2);
+ mb_dqcoeff += 16;
+
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q0s16), 3);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q0s16), 3);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_low_s16(q1s16), 3);
+ mb_dqcoeff += 16;
+ vst1_lane_s16(mb_dqcoeff, vget_high_s16(q1s16), 3);
+ mb_dqcoeff += 16;
+ return;
+}
diff --git a/vp8/vp8_common.mk b/vp8/vp8_common.mk
index cdb2716640d07d1c690518308984abdd601f3504..68fa04633a20b9357bfc6b89b0ab929a507cb774 100644
--- a/vp8/vp8_common.mk
+++ b/vp8/vp8_common.mk
@@ -159,7 +159,6 @@ VP8_COMMON_SRCS-$(HAVE_MEDIA) += common/arm/armv6/vp8_variance_halfpixvar16x16_
VP8_COMMON_SRCS-$(HAVE_MEDIA) += common/arm/armv6/vp8_variance_halfpixvar16x16_hv_armv6$(ASM)
# common (neon)
-VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/iwalsh_neon$(ASM)
VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/loopfilter_neon$(ASM)
VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/loopfiltersimplehorizontaledge_neon$(ASM)
VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/loopfiltersimpleverticaledge_neon$(ASM)
@@ -186,6 +185,7 @@ VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/dc_only_idct_add_neon.c
VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/dequant_idct_neon.c
VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/dequantizeb_neon.c
VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/idct_dequant_full_2x_neon.c
+VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/iwalsh_neon.c
$(eval $(call rtcd_h_template,vp8_rtcd,vp8/common/rtcd_defs.pl))