| Viet-Hoa Do | 03b2971 | 2022-06-01 11:47:14 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022 Arm Limited. |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | namespace arm_gemm { |
| 26 | |
| 27 | namespace utils { |
| 28 | |
| 29 | #ifdef ARM_COMPUTE_ENABLE_SME |
| 30 | namespace sme { |
| 31 | |
| 32 | unsigned long raw_vector_length() { |
| 33 | static unsigned long res=0; |
| 34 | |
| 35 | if (!res) { |
| 36 | __asm __volatile( |
| 37 | ".inst 0xd503477f // SMSTART ZA\n" |
| 38 | "cntb %0\n" |
| 39 | ".inst 0xd503467f // SMSTOP\n" |
| 40 | : "=r" (res) |
| 41 | : |
| 42 | : "z0", "z1", "z2", "z3", "z4", "z5", "z6", "z7", "z8", "z9", "z10", "z11", "z12", "z13", "z14", "z15", |
| 43 | "z16", "z17", "z18", "z19", "z20", "z21", "z22", "z23", "z24", "z25", "z26", "z27", "z28", "z29", "z30", "z31" |
| 44 | ); |
| 45 | } |
| 46 | |
| 47 | return res; |
| 48 | } |
| 49 | |
| 50 | } // namespace sme |
| 51 | #endif // ARM_COMPUTE_ENABLE_SME |
| 52 | |
| 53 | } // namespace utils |
| 54 | |
| 55 | } // namespace arm_gemm |