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Diffstat (limited to 'thirdparty/astcenc/astcenc_platform_isa_detection.cpp')
| -rw-r--r-- | thirdparty/astcenc/astcenc_platform_isa_detection.cpp | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/thirdparty/astcenc/astcenc_platform_isa_detection.cpp b/thirdparty/astcenc/astcenc_platform_isa_detection.cpp deleted file mode 100644 index 8ed98437ea..0000000000 --- a/thirdparty/astcenc/astcenc_platform_isa_detection.cpp +++ /dev/null @@ -1,166 +0,0 @@ -// SPDX-License-Identifier: Apache-2.0 -// ---------------------------------------------------------------------------- -// Copyright 2020-2022 Arm Limited -// -// Licensed under the Apache License, Version 2.0 (the "License"); you may not -// use this file except in compliance with the License. You may obtain a copy -// of the License at: -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT -// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the -// License for the specific language governing permissions and limitations -// under the License. -// ---------------------------------------------------------------------------- - -/** - * @brief Platform-specific function implementations. - * - * This module contains functions for querying the host extended ISA support. - */ - -// Include before the defines below to pick up any auto-setup based on compiler -// built-in config, if not being set explicitly by the build system -#include "astcenc_internal.h" - -#if (ASTCENC_SSE > 0) || (ASTCENC_AVX > 0) || \ - (ASTCENC_POPCNT > 0) || (ASTCENC_F16C > 0) - -static bool g_init { false }; - -/** Does this CPU support SSE 4.1? Set to -1 if not yet initialized. */ -static bool g_cpu_has_sse41 { false }; - -/** Does this CPU support AVX2? Set to -1 if not yet initialized. */ -static bool g_cpu_has_avx2 { false }; - -/** Does this CPU support POPCNT? Set to -1 if not yet initialized. */ -static bool g_cpu_has_popcnt { false }; - -/** Does this CPU support F16C? Set to -1 if not yet initialized. */ -static bool g_cpu_has_f16c { false }; - -/* ============================================================================ - Platform code for Visual Studio -============================================================================ */ -#if !defined(__clang__) && defined(_MSC_VER) -#define WIN32_LEAN_AND_MEAN -#include <windows.h> -#include <intrin.h> - -/** - * @brief Detect platform CPU ISA support and update global trackers. - */ -static void detect_cpu_isa() -{ - int data[4]; - - __cpuid(data, 0); - int num_id = data[0]; - - if (num_id >= 1) - { - __cpuidex(data, 1, 0); - // SSE41 = Bank 1, ECX, bit 19 - g_cpu_has_sse41 = data[2] & (1 << 19) ? true : false; - // POPCNT = Bank 1, ECX, bit 23 - g_cpu_has_popcnt = data[2] & (1 << 23) ? true : false; - // F16C = Bank 1, ECX, bit 29 - g_cpu_has_f16c = data[2] & (1 << 29) ? true : false; - } - - if (num_id >= 7) - { - __cpuidex(data, 7, 0); - // AVX2 = Bank 7, EBX, bit 5 - g_cpu_has_avx2 = data[1] & (1 << 5) ? true : false; - } - - // Ensure state bits are updated before init flag is updated - MemoryBarrier(); - g_init = true; -} - -/* ============================================================================ - Platform code for GCC and Clang -============================================================================ */ -#else -#include <cpuid.h> - -/** - * @brief Detect platform CPU ISA support and update global trackers. - */ -static void detect_cpu_isa() -{ - unsigned int data[4]; - - if (__get_cpuid_count(1, 0, &data[0], &data[1], &data[2], &data[3])) - { - // SSE41 = Bank 1, ECX, bit 19 - g_cpu_has_sse41 = data[2] & (1 << 19) ? true : false; - // POPCNT = Bank 1, ECX, bit 23 - g_cpu_has_popcnt = data[2] & (1 << 23) ? true : false; - // F16C = Bank 1, ECX, bit 29 - g_cpu_has_f16c = data[2] & (1 << 29) ? true : false; - } - - g_cpu_has_avx2 = 0; - if (__get_cpuid_count(7, 0, &data[0], &data[1], &data[2], &data[3])) - { - // AVX2 = Bank 7, EBX, bit 5 - g_cpu_has_avx2 = data[1] & (1 << 5) ? true : false; - } - - // Ensure state bits are updated before init flag is updated - __sync_synchronize(); - g_init = true; -} -#endif - -/* See header for documentation. */ -bool cpu_supports_popcnt() -{ - if (!g_init) - { - detect_cpu_isa(); - } - - return g_cpu_has_popcnt; -} - -/* See header for documentation. */ -bool cpu_supports_f16c() -{ - if (!g_init) - { - detect_cpu_isa(); - } - - return g_cpu_has_f16c; -} - -/* See header for documentation. */ -bool cpu_supports_sse41() -{ - if (!g_init) - { - detect_cpu_isa(); - } - - return g_cpu_has_sse41; -} - -/* See header for documentation. */ -bool cpu_supports_avx2() -{ - if (!g_init) - { - detect_cpu_isa(); - } - - return g_cpu_has_avx2; -} - -#endif |