diff --git a/vp9/encoder/x86/vp9_dct_mmx.asm b/vp9/encoder/x86/vp9_dct_mmx.asm
deleted file mode 100644
index 54766d8..0000000
--- a/vp9/encoder/x86/vp9_dct_mmx.asm
+++ /dev/null
@@ -1,241 +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.
-;
-
-
-%include "vpx_ports/x86_abi_support.asm"
-
-;void vp9_short_fdct4x4_mmx(short *input, short *output, int pitch)
-global sym(vp9_short_fdct4x4_mmx) PRIVATE
-sym(vp9_short_fdct4x4_mmx):
-    push        rbp
-    mov         rbp,        rsp
-    SHADOW_ARGS_TO_STACK 3
-    GET_GOT     rbx
-    push        rsi
-    push        rdi
-    ; end prolog
-
-        mov         rsi,        arg(0)      ; input
-        mov         rdi,        arg(1)      ; output
-
-        movsxd      rax,        dword ptr arg(2) ;pitch
-
-        lea         rcx,        [rsi + rax*2]
-        ; read the input data
-        movq        mm0,        [rsi]
-        movq        mm1,        [rsi + rax]
-
-        movq        mm2,        [rcx]
-        movq        mm4,        [rcx + rax]
-
-        ; transpose for the first stage
-        movq        mm3,        mm0         ; 00 01 02 03
-        movq        mm5,        mm2         ; 20 21 22 23
-
-        punpcklwd   mm0,        mm1         ; 00 10 01 11
-        punpckhwd   mm3,        mm1         ; 02 12 03 13
-
-        punpcklwd   mm2,        mm4         ; 20 30 21 31
-        punpckhwd   mm5,        mm4         ; 22 32 23 33
-
-        movq        mm1,        mm0         ; 00 10 01 11
-        punpckldq   mm0,        mm2         ; 00 10 20 30
-
-        punpckhdq   mm1,        mm2         ; 01 11 21 31
-
-        movq        mm2,        mm3         ; 02 12 03 13
-        punpckldq   mm2,        mm5         ; 02 12 22 32
-
-        punpckhdq   mm3,        mm5         ; 03 13 23 33
-
-        ; mm0 0
-        ; mm1 1
-        ; mm2 2
-        ; mm3 3
-
-        ; first stage
-        movq        mm5,        mm0
-        movq        mm4,        mm1
-
-        paddw       mm0,        mm3         ; a1 = 0 + 3
-        paddw       mm1,        mm2         ; b1 = 1 + 2
-
-        psubw       mm4,        mm2         ; c1 = 1 - 2
-        psubw       mm5,        mm3         ; d1 = 0 - 3
-
-        psllw       mm5,        3
-        psllw       mm4,        3
-
-        psllw       mm0,        3
-        psllw       mm1,        3
-
-        ; output 0 and 2
-        movq        mm2,        mm0         ; a1
-
-        paddw       mm0,        mm1         ; op[0] = a1 + b1
-        psubw       mm2,        mm1         ; op[2] = a1 - b1
-
-        ; output 1 and 3
-        ; interleave c1, d1
-        movq        mm1,        mm5         ; d1
-        punpcklwd   mm1,        mm4         ; c1 d1
-        punpckhwd   mm5,        mm4         ; c1 d1
-
-        movq        mm3,        mm1
-        movq        mm4,        mm5
-
-        pmaddwd     mm1,        MMWORD PTR[GLOBAL (_5352_2217)]    ; c1*2217 + d1*5352
-        pmaddwd     mm4,        MMWORD PTR[GLOBAL (_5352_2217)]    ; c1*2217 + d1*5352
-
-        pmaddwd     mm3,        MMWORD PTR[GLOBAL(_2217_neg5352)]  ; d1*2217 - c1*5352
-        pmaddwd     mm5,        MMWORD PTR[GLOBAL(_2217_neg5352)]  ; d1*2217 - c1*5352
-
-        paddd       mm1,        MMWORD PTR[GLOBAL(_14500)]
-        paddd       mm4,        MMWORD PTR[GLOBAL(_14500)]
-        paddd       mm3,        MMWORD PTR[GLOBAL(_7500)]
-        paddd       mm5,        MMWORD PTR[GLOBAL(_7500)]
-
-        psrad       mm1,        12          ; (c1 * 2217 + d1 * 5352 +  14500)>>12
-        psrad       mm4,        12          ; (c1 * 2217 + d1 * 5352 +  14500)>>12
-        psrad       mm3,        12          ; (d1 * 2217 - c1 * 5352 +   7500)>>12
-        psrad       mm5,        12          ; (d1 * 2217 - c1 * 5352 +   7500)>>12
-
-        packssdw    mm1,        mm4         ; op[1]
-        packssdw    mm3,        mm5         ; op[3]
-
-        ; done with vertical
-        ; transpose for the second stage
-        movq        mm4,        mm0         ; 00 10 20 30
-        movq        mm5,        mm2         ; 02 12 22 32
-
-        punpcklwd   mm0,        mm1         ; 00 01 10 11
-        punpckhwd   mm4,        mm1         ; 20 21 30 31
-
-        punpcklwd   mm2,        mm3         ; 02 03 12 13
-        punpckhwd   mm5,        mm3         ; 22 23 32 33
-
-        movq        mm1,        mm0         ; 00 01 10 11
-        punpckldq   mm0,        mm2         ; 00 01 02 03
-
-        punpckhdq   mm1,        mm2         ; 01 22 12 13
-
-        movq        mm2,        mm4         ; 20 31 30 31
-        punpckldq   mm2,        mm5         ; 20 21 22 23
-
-        punpckhdq   mm4,        mm5         ; 30 31 32 33
-
-        ; mm0 0
-        ; mm1 1
-        ; mm2 2
-        ; mm3 4
-
-        movq        mm5,        mm0
-        movq        mm3,        mm1
-
-        paddw       mm0,        mm4         ; a1 = 0 + 3
-        paddw       mm1,        mm2         ; b1 = 1 + 2
-
-        psubw       mm3,        mm2         ; c1 = 1 - 2
-        psubw       mm5,        mm4         ; d1 = 0 - 3
-
-        pxor        mm6,        mm6         ; zero out for compare
-
-        pcmpeqw     mm6,        mm5         ; d1 != 0
-
-        pandn       mm6,        MMWORD PTR[GLOBAL(_cmp_mask)]   ; clear upper,
-                                                                ; and keep bit 0 of lower
-
-        ; output 0 and 2
-        movq        mm2,        mm0         ; a1
-
-        paddw       mm0,        mm1         ; a1 + b1
-        psubw       mm2,        mm1         ; a1 - b1
-
-        paddw       mm0,        MMWORD PTR[GLOBAL(_7w)]
-        paddw       mm2,        MMWORD PTR[GLOBAL(_7w)]
-
-        psraw       mm0,        4           ; op[0] = (a1 + b1 + 7)>>4
-        psraw       mm2,        4           ; op[8] = (a1 - b1 + 7)>>4
-
-        movq        MMWORD PTR[rdi + 0 ],  mm0
-        movq        MMWORD PTR[rdi + 16],  mm2
-
-        ; output 1 and 3
-        ; interleave c1, d1
-        movq        mm1,        mm5         ; d1
-        punpcklwd   mm1,        mm3         ; c1 d1
-        punpckhwd   mm5,        mm3         ; c1 d1
-
-        movq        mm3,        mm1
-        movq        mm4,        mm5
-
-        pmaddwd     mm1,        MMWORD PTR[GLOBAL (_5352_2217)]    ; c1*2217 + d1*5352
-        pmaddwd     mm4,        MMWORD PTR[GLOBAL (_5352_2217)]    ; c1*2217 + d1*5352
-
-        pmaddwd     mm3,        MMWORD PTR[GLOBAL(_2217_neg5352)]  ; d1*2217 - c1*5352
-        pmaddwd     mm5,        MMWORD PTR[GLOBAL(_2217_neg5352)]  ; d1*2217 - c1*5352
-
-        paddd       mm1,        MMWORD PTR[GLOBAL(_12000)]
-        paddd       mm4,        MMWORD PTR[GLOBAL(_12000)]
-        paddd       mm3,        MMWORD PTR[GLOBAL(_51000)]
-        paddd       mm5,        MMWORD PTR[GLOBAL(_51000)]
-
-        psrad       mm1,        16          ; (c1 * 2217 + d1 * 5352 +  14500)>>16
-        psrad       mm4,        16          ; (c1 * 2217 + d1 * 5352 +  14500)>>16
-        psrad       mm3,        16          ; (d1 * 2217 - c1 * 5352 +   7500)>>16
-        psrad       mm5,        16          ; (d1 * 2217 - c1 * 5352 +   7500)>>16
-
-        packssdw    mm1,        mm4         ; op[4]
-        packssdw    mm3,        mm5         ; op[12]
-
-        paddw       mm1,        mm6         ; op[4] += (d1!=0)
-
-        movq        MMWORD PTR[rdi + 8 ],  mm1
-        movq        MMWORD PTR[rdi + 24],  mm3
-
-     ; begin epilog
-    pop         rdi
-    pop         rsi
-    RESTORE_GOT
-    UNSHADOW_ARGS
-    pop         rbp
-    ret
-
-SECTION_RODATA
-align 8
-_5352_2217:
-    dw 5352
-    dw 2217
-    dw 5352
-    dw 2217
-align 8
-_2217_neg5352:
-    dw 2217
-    dw -5352
-    dw 2217
-    dw -5352
-align 8
-_cmp_mask:
-    times 4 dw 1
-align 8
-_7w:
-    times 4 dw 7
-align 8
-_14500:
-    times 2 dd 14500
-align 8
-_7500:
-    times 2 dd 7500
-align 8
-_12000:
-    times 2 dd 12000
-align 8
-_51000:
-    times 2 dd 51000
diff --git a/vp9/encoder/x86/vp9_dct_mmx.h b/vp9/encoder/x86/vp9_dct_mmx.h
deleted file mode 100644
index 3bac7c8..0000000
--- a/vp9/encoder/x86/vp9_dct_mmx.h
+++ /dev/null
@@ -1,17 +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.
- */
-
-#ifndef VP9_ENCODER_X86_VP9_DCT_MMX_H_
-#define VP9_ENCODER_X86_VP9_DCT_MMX_H_
-
-extern void vp9_short_fdct4x4_mmx(short *input, short *output, int pitch);
-
-
-#endif /* VP9_ENCODER_X86_VP9_DCT_MMX_H_ */
diff --git a/vp9/encoder/x86/vp9_fwalsh_sse2.asm b/vp9/encoder/x86/vp9_fwalsh_sse2.asm
deleted file mode 100644
index 7bee9ef..0000000
--- a/vp9/encoder/x86/vp9_fwalsh_sse2.asm
+++ /dev/null
@@ -1,164 +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.
-;
-
-
-%include "vpx_ports/x86_abi_support.asm"
-
-;void vp9_short_walsh4x4_sse2(short *input, short *output, int pitch)
-global sym(vp9_short_walsh4x4_sse2) PRIVATE
-sym(vp9_short_walsh4x4_sse2):
-    push        rbp
-    mov         rbp, rsp
-    SHADOW_ARGS_TO_STACK 3
-    SAVE_XMM 7
-    GET_GOT     rbx
-    push        rsi
-    push        rdi
-    ; end prolog
-
-    mov     rsi, arg(0)           ; input
-    mov     rdi, arg(1)           ; output
-    movsxd  rdx, dword ptr arg(2) ; pitch
-
-    ; first for loop
-    movq    xmm0, MMWORD PTR [rsi]           ; load input
-    movq    xmm1, MMWORD PTR [rsi + rdx]
-    lea     rsi,  [rsi + rdx*2]
-    movq    xmm2, MMWORD PTR [rsi]
-    movq    xmm3, MMWORD PTR [rsi + rdx]
-
-    punpcklwd xmm0,  xmm1
-    punpcklwd xmm2,  xmm3
-
-    movdqa    xmm1, xmm0
-    punpckldq xmm0, xmm2           ; ip[1] ip[0]
-    punpckhdq xmm1, xmm2           ; ip[3] ip[2]
-
-    movdqa    xmm2, xmm0
-    paddw     xmm0, xmm1
-    psubw     xmm2, xmm1
-
-    psllw     xmm0, 2              ; d1  a1
-    psllw     xmm2, 2              ; c1  b1
-
-    movdqa    xmm1, xmm0
-    punpcklqdq xmm0, xmm2          ; b1  a1
-    punpckhqdq xmm1, xmm2          ; c1  d1
-
-    pxor      xmm6, xmm6
-    movq      xmm6, xmm0
-    pxor      xmm7, xmm7
-    pcmpeqw   xmm7, xmm6
-    paddw     xmm7, [GLOBAL(c1)]
-
-    movdqa    xmm2, xmm0
-    paddw     xmm0, xmm1           ; b1+c1  a1+d1
-    psubw     xmm2, xmm1           ; b1-c1  a1-d1
-    paddw     xmm0, xmm7           ; b1+c1  a1+d1+(a1!=0)
-
-    ; second for loop
-    ; input: 13  9  5  1 12  8  4  0 (xmm0)
-    ;        14 10  6  2 15 11  7  3 (xmm2)
-    ; after shuffle:
-    ;        13  5  9  1 12  4  8  0 (xmm0)
-    ;        14  6 10  2 15  7 11  3 (xmm1)
-    pshuflw   xmm3, xmm0, 0xd8
-    pshufhw   xmm0, xmm3, 0xd8
-    pshuflw   xmm3, xmm2, 0xd8
-    pshufhw   xmm1, xmm3, 0xd8
-
-    movdqa    xmm2, xmm0
-    pmaddwd   xmm0, [GLOBAL(c1)]    ; d11 a11 d10 a10
-    pmaddwd   xmm2, [GLOBAL(cn1)]   ; c11 b11 c10 b10
-    movdqa    xmm3, xmm1
-    pmaddwd   xmm1, [GLOBAL(c1)]    ; d12 a12 d13 a13
-    pmaddwd   xmm3, [GLOBAL(cn1)]   ; c12 b12 c13 b13
-
-    pshufd    xmm4, xmm0, 0xd8      ; d11 d10 a11 a10
-    pshufd    xmm5, xmm2, 0xd8      ; c11 c10 b11 b10
-    pshufd    xmm6, xmm1, 0x72      ; d13 d12 a13 a12
-    pshufd    xmm7, xmm3, 0x72      ; c13 c12 b13 b12
-
-    movdqa    xmm0, xmm4
-    punpcklqdq xmm0, xmm5           ; b11 b10 a11 a10
-    punpckhqdq xmm4, xmm5           ; c11 c10 d11 d10
-    movdqa    xmm1, xmm6
-    punpcklqdq xmm1, xmm7           ; b13 b12 a13 a12
-    punpckhqdq xmm6, xmm7           ; c13 c12 d13 d12
-
-    movdqa    xmm2, xmm0
-    paddd     xmm0, xmm4            ; b21 b20 a21 a20
-    psubd     xmm2, xmm4            ; c21 c20 d21 d20
-    movdqa    xmm3, xmm1
-    paddd     xmm1, xmm6            ; b23 b22 a23 a22
-    psubd     xmm3, xmm6            ; c23 c22 d23 d22
-
-    pxor      xmm4, xmm4
-    movdqa    xmm5, xmm4
-    pcmpgtd   xmm4, xmm0
-    pcmpgtd   xmm5, xmm2
-    pand      xmm4, [GLOBAL(cd1)]
-    pand      xmm5, [GLOBAL(cd1)]
-
-    pxor      xmm6, xmm6
-    movdqa    xmm7, xmm6
-    pcmpgtd   xmm6, xmm1
-    pcmpgtd   xmm7, xmm3
-    pand      xmm6, [GLOBAL(cd1)]
-    pand      xmm7, [GLOBAL(cd1)]
-
-    paddd     xmm0, xmm4
-    paddd     xmm2, xmm5
-    paddd     xmm0, [GLOBAL(cd3)]
-    paddd     xmm2, [GLOBAL(cd3)]
-    paddd     xmm1, xmm6
-    paddd     xmm3, xmm7
-    paddd     xmm1, [GLOBAL(cd3)]
-    paddd     xmm3, [GLOBAL(cd3)]
-
-    psrad     xmm0, 3
-    psrad     xmm1, 3
-    psrad     xmm2, 3
-    psrad     xmm3, 3
-    movdqa    xmm4, xmm0
-    punpcklqdq xmm0, xmm1           ; a23 a22 a21 a20
-    punpckhqdq xmm4, xmm1           ; b23 b22 b21 b20
-    movdqa    xmm5, xmm2
-    punpckhqdq xmm2, xmm3           ; c23 c22 c21 c20
-    punpcklqdq xmm5, xmm3           ; d23 d22 d21 d20
-
-    packssdw  xmm0, xmm4            ; b23 b22 b21 b20 a23 a22 a21 a20
-    packssdw  xmm2, xmm5            ; d23 d22 d21 d20 c23 c22 c21 c20
-
-    movdqa  XMMWORD PTR [rdi], xmm0
-    movdqa  XMMWORD PTR [rdi + 16], xmm2
-
-    ; begin epilog
-    pop rdi
-    pop rsi
-    RESTORE_GOT
-    RESTORE_XMM
-    UNSHADOW_ARGS
-    pop         rbp
-    ret
-
-SECTION_RODATA
-align 16
-c1:
-    dw 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001
-align 16
-cn1:
-    dw 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff, 0x0001, 0xffff
-align 16
-cd1:
-    dd 0x00000001, 0x00000001, 0x00000001, 0x00000001
-align 16
-cd3:
-    dd 0x00000003, 0x00000003, 0x00000003, 0x00000003
diff --git a/vp9/vp9cx.mk b/vp9/vp9cx.mk
index 12a49f8..dee83c9 100644
--- a/vp9/vp9cx.mk
+++ b/vp9/vp9cx.mk
@@ -78,13 +78,10 @@
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_variance_mmx.c
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_variance_impl_mmx.asm
 VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_sad_mmx.asm
-VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_dct_mmx.asm
-VP9_CX_SRCS-$(HAVE_MMX) += encoder/x86/vp9_dct_mmx.h
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_variance_sse2.c
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_variance_impl_sse2.asm
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_sad_sse2.asm
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_sad4d_sse2.asm
-VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_fwalsh_sse2.asm
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_subpel_variance.asm
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_subtract_sse2.asm
 VP9_CX_SRCS-$(HAVE_SSE2) += encoder/x86/vp9_error_sse2.asm