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| 1 /*************************************************************************** | 1 /*************************************************************************** |
| 2 * Copyright (c) 2009,2010, Code Aurora Forum. All rights reserved. | 2 * Copyright (c) 2009,2010, Code Aurora Forum. All rights reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 ***************************************************************************/ | 6 ***************************************************************************/ |
| 7 | 7 |
| 8 /*************************************************************************** | 8 /*************************************************************************** |
| 9 Neon memset: Attempts to do a memset with Neon registers if possible, | 9 Neon memset: Attempts to do a memset with Neon registers if possible, |
| 10 Inputs: | 10 Inputs: |
| 11 s: The buffer to write to | 11 s: The buffer to write to |
| 12 c: The integer data to write to the buffer | 12 c: The integer data to write to the buffer |
| 13 n: The size_t count. | 13 n: The size_t count. |
| 14 Outputs: | 14 Outputs: |
| 15 | 15 |
| 16 ***************************************************************************/ | 16 ***************************************************************************/ |
| 17 | 17 |
| 18 .syntax unified | 18 .syntax unified |
| 19 | 19 |
| 20 .code 32 | 20 .code 32 |
| 21 .fpu neon | 21 .fpu neon |
| 22 .align 4 | 22 .align 4 |
| 23 .globl memset16_neon | 23 .globl memset16_neon |
| 24 .func | |
| 25 | 24 |
| 26 memset16_neon: | 25 memset16_neon: |
| 27 cmp r2, #0 | 26 cmp r2, #0 |
| 28 bxeq lr | 27 bxeq lr |
| 29 | 28 |
| 30 /* Keep in mind that r2 -- the count argument -- is for the | 29 /* Keep in mind that r2 -- the count argument -- is for the |
| 31 * number of 16-bit items to copy. | 30 * number of 16-bit items to copy. |
| 32 */ | 31 */ |
| 33 lsl r2, r2, #1 | 32 lsl r2, r2, #1 |
| 34 | 33 |
| (...skipping 99 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 134 subs r2, r2, #4 | 133 subs r2, r2, #4 |
| 135 str r1, [r0], #4 | 134 str r1, [r0], #4 |
| 136 memset_2: | 135 memset_2: |
| 137 cmp r2, #0 | 136 cmp r2, #0 |
| 138 ble memset_end | 137 ble memset_end |
| 139 strh r1, [r0], #2 | 138 strh r1, [r0], #2 |
| 140 memset_end: | 139 memset_end: |
| 141 pop {r0} | 140 pop {r0} |
| 142 bx lr | 141 bx lr |
| 143 | 142 |
| 144 .endfunc | |
| 145 .end | 143 .end |
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Chromium Code Reviews
Issue 461693004:
Let skia build with clang's integrated assembler. (Closed)
Base URL: https://chromium.googlesource.com/skia.git@master