The Tor Browser / file comparison
comparison: media/libvpx/vp9/encoder/x86/vp9_error_sse2.asm
media/libvpx/vp9/encoder/x86/vp9_error_sse2.asm
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:56eacd8c026d |
|---|---|
| 1 ; | |
| 2 ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. | |
| 3 ; | |
| 4 ; Use of this source code is governed by a BSD-style license | |
| 5 ; that can be found in the LICENSE file in the root of the source | |
| 6 ; tree. An additional intellectual property rights grant can be found | |
| 7 ; in the file PATENTS. All contributing project authors may | |
| 8 ; be found in the AUTHORS file in the root of the source tree. | |
| 9 ; | |
| 10 | |
| 11 %include "third_party/x86inc/x86inc.asm" | |
| 12 | |
| 13 SECTION .text | |
| 14 | |
| 15 ; int64_t vp9_block_error(int16_t *coeff, int16_t *dqcoeff, intptr_t block_size, | |
| 16 ; int64_t *ssz) | |
| 17 | |
| 18 INIT_XMM sse2 | |
| 19 cglobal block_error, 3, 3, 8, uqc, dqc, size, ssz | |
| 20 pxor m4, m4 ; sse accumulator | |
| 21 pxor m6, m6 ; ssz accumulator | |
| 22 pxor m5, m5 ; dedicated zero register | |
| 23 lea uqcq, [uqcq+sizeq*2] | |
| 24 lea dqcq, [dqcq+sizeq*2] | |
| 25 neg sizeq | |
| 26 .loop: | |
| 27 mova m2, [uqcq+sizeq*2] | |
| 28 mova m0, [dqcq+sizeq*2] | |
| 29 mova m3, [uqcq+sizeq*2+mmsize] | |
| 30 mova m1, [dqcq+sizeq*2+mmsize] | |
| 31 psubw m0, m2 | |
| 32 psubw m1, m3 | |
| 33 ; individual errors are max. 15bit+sign, so squares are 30bit, and | |
| 34 ; thus the sum of 2 should fit in a 31bit integer (+ unused sign bit) | |
| 35 pmaddwd m0, m0 | |
| 36 pmaddwd m1, m1 | |
| 37 pmaddwd m2, m2 | |
| 38 pmaddwd m3, m3 | |
| 39 ; accumulate in 64bit | |
| 40 punpckldq m7, m0, m5 | |
| 41 punpckhdq m0, m5 | |
| 42 paddq m4, m7 | |
| 43 punpckldq m7, m1, m5 | |
| 44 paddq m4, m0 | |
| 45 punpckhdq m1, m5 | |
| 46 paddq m4, m7 | |
| 47 punpckldq m7, m2, m5 | |
| 48 paddq m4, m1 | |
| 49 punpckhdq m2, m5 | |
| 50 paddq m6, m7 | |
| 51 punpckldq m7, m3, m5 | |
| 52 paddq m6, m2 | |
| 53 punpckhdq m3, m5 | |
| 54 paddq m6, m7 | |
| 55 paddq m6, m3 | |
| 56 add sizeq, mmsize | |
| 57 jl .loop | |
| 58 | |
| 59 ; accumulate horizontally and store in return value | |
| 60 movhlps m5, m4 | |
| 61 movhlps m7, m6 | |
| 62 paddq m4, m5 | |
| 63 paddq m6, m7 | |
| 64 %if ARCH_X86_64 | |
| 65 movq rax, m4 | |
| 66 movq [sszq], m6 | |
| 67 %else | |
| 68 mov eax, sszm | |
| 69 pshufd m5, m4, 0x1 | |
| 70 movq [eax], m6 | |
| 71 movd eax, m4 | |
| 72 movd edx, m5 | |
| 73 %endif | |
| 74 RET |
