Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 1 | /* |
Anthony Barbier | 5f70773 | 2018-07-03 16:22:02 +0100 | [diff] [blame] | 2 | * Copyright (c) 2017 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 | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 27 | #ifdef __ARM_FEATURE_SVE |
| 28 | #include <arm_sve.h> |
| 29 | #endif |
| 30 | |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 31 | // Macro for unreachable code (e.g. impossible default cases on switch) |
Anthony Barbier | 5f70773 | 2018-07-03 16:22:02 +0100 | [diff] [blame] | 32 | #define UNREACHABLE(why) __builtin_unreachable() |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 33 | |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 34 | // Paranoid option for the above with assert |
| 35 | // #define UNREACHABLE(why) assert(0 && why) |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 36 | |
Anthony Barbier | 5f70773 | 2018-07-03 16:22:02 +0100 | [diff] [blame] | 37 | inline int iceildiv(const int a, const int b) { |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 38 | return (a + b - 1) / b; |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 39 | } |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 40 | |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 41 | template <typename T> |
Anthony Barbier | 5f70773 | 2018-07-03 16:22:02 +0100 | [diff] [blame] | 42 | inline T roundup(const T a, const T b) { |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 43 | T rem = a % b; |
Michele Di Giorgio | 5b6904b | 2018-01-29 12:24:14 +0000 | [diff] [blame] | 44 | |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 45 | if (rem) { |
| 46 | return a + b - rem; |
| 47 | } else { |
| 48 | return a; |
| 49 | } |
Pablo Tello | eb82fd2 | 2018-02-23 13:43:50 +0000 | [diff] [blame] | 50 | } |
David Mansell | d93991e | 2018-07-06 14:52:52 +0100 | [diff] [blame] | 51 | |
| 52 | template <typename T> |
| 53 | inline unsigned long get_vector_length() { |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 54 | #ifdef __ARM_FEATURE_SVE |
| 55 | const unsigned long length = svcntb(); |
| 56 | #else |
David Mansell | d93991e | 2018-07-06 14:52:52 +0100 | [diff] [blame] | 57 | const unsigned long length = 16; |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 58 | #endif |
David Mansell | d93991e | 2018-07-06 14:52:52 +0100 | [diff] [blame] | 59 | |
| 60 | return length / sizeof(T); |
Georgios Pinitas | 421405b | 2018-10-26 19:05:32 +0100 | [diff] [blame^] | 61 | } |