Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 1 | /* |
Georgios Pinitas | 1d48065 | 2019-01-23 11:24:50 +0000 | [diff] [blame] | 2 | * Copyright (c) 2017-2019 Arm Limited. |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 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 | */ |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 24 | |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 25 | #pragma once |
| 26 | |
Georgios Pinitas | 7cd26d4 | 2019-01-09 18:35:17 +0000 | [diff] [blame] | 27 | #include <cstddef> |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 28 | |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 29 | // Macro for unreachable code (e.g. impossible default cases on switch) |
Anthony Barbier | 5f70773 | 2018-07-03 16:22:02 +0100 | [diff] [blame] | 30 | #define UNREACHABLE(why) __builtin_unreachable() |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 31 | |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 32 | // Paranoid option for the above with assert |
| 33 | // #define UNREACHABLE(why) assert(0 && why) |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 34 | |
Michalis Spyrou | 6bff195 | 2019-10-02 17:22:11 +0100 | [diff] [blame] | 35 | #define UNUSED(x) (void)(x) |
| 36 | |
Georgios Pinitas | 1d48065 | 2019-01-23 11:24:50 +0000 | [diff] [blame] | 37 | template<typename T> |
| 38 | inline T iceildiv(const T a, const T b) { |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 39 | return (a + b - 1) / b; |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 40 | } |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 41 | |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 42 | template <typename T> |
Anthony Barbier | 5f70773 | 2018-07-03 16:22:02 +0100 | [diff] [blame] | 43 | inline T roundup(const T a, const T b) { |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 44 | T rem = a % b; |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 45 | |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 46 | if (rem) { |
| 47 | return a + b - rem; |
| 48 | } else { |
| 49 | return a; |
| 50 | } |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 51 | } |
David Mansell | d93991e | 2018-07-06 14:52:52 +0100 | [diff] [blame] | 52 | |
Georgios Pinitas | 7cd26d4 | 2019-01-09 18:35:17 +0000 | [diff] [blame] | 53 | namespace arm_gemm { |
| 54 | namespace utils { |
| 55 | namespace { |
| 56 | |
| 57 | #ifdef __ARM_FEATURE_SVE |
| 58 | template<size_t sz> |
| 59 | inline unsigned long get_vector_length_sz() { |
| 60 | unsigned long v; |
| 61 | |
| 62 | __asm ( |
| 63 | "cntb %0" |
| 64 | : "=r" (v) |
| 65 | ); |
| 66 | |
| 67 | return v / sz; |
| 68 | } |
| 69 | |
| 70 | #define VEC_LEN_SPEC(sz, opcode) template <> inline unsigned long get_vector_length_sz<sz>() { unsigned long v; __asm ( opcode " %0" : "=r" (v)); return v; } |
| 71 | |
| 72 | VEC_LEN_SPEC(8, "cntd") |
| 73 | VEC_LEN_SPEC(4, "cntw") |
| 74 | VEC_LEN_SPEC(2, "cnth") |
| 75 | VEC_LEN_SPEC(1, "cntb") |
| 76 | #endif |
| 77 | |
| 78 | } // anonymous namespace |
| 79 | |
David Mansell | d93991e | 2018-07-06 14:52:52 +0100 | [diff] [blame] | 80 | template <typename T> |
| 81 | inline unsigned long get_vector_length() { |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 82 | #ifdef __ARM_FEATURE_SVE |
Georgios Pinitas | 7cd26d4 | 2019-01-09 18:35:17 +0000 | [diff] [blame] | 83 | return get_vector_length_sz<sizeof(T)>(); |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 84 | #else |
Georgios Pinitas | 7cd26d4 | 2019-01-09 18:35:17 +0000 | [diff] [blame] | 85 | return 16 / sizeof(T); |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame] | 86 | #endif |
Georgios Pinitas | 7cd26d4 | 2019-01-09 18:35:17 +0000 | [diff] [blame] | 87 | } |
David Mansell | d93991e | 2018-07-06 14:52:52 +0100 | [diff] [blame] | 88 | |
Georgios Pinitas | 7cd26d4 | 2019-01-09 18:35:17 +0000 | [diff] [blame] | 89 | } // utils namespace |
| 90 | } // arm_gemm namespace |
| 91 | |
Georgios Pinitas | cfa2bba | 2019-06-27 17:00:52 +0100 | [diff] [blame] | 92 | using namespace arm_gemm::utils; |