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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/build/cmake/cpu.cmake | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/third_party/aom/build/cmake/cpu.cmake b/third_party/aom/build/cmake/cpu.cmake new file mode 100644 index 0000000000..a9b7a67070 --- /dev/null +++ b/third_party/aom/build/cmake/cpu.cmake @@ -0,0 +1,108 @@ +# +# Copyright (c) 2017, Alliance for Open Media. All rights reserved +# +# This source code is subject to the terms of the BSD 2 Clause License and the +# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was +# not distributed with this source code in the LICENSE file, you can obtain it +# at www.aomedia.org/license/software. If the Alliance for Open Media Patent +# License 1.0 was not distributed with this source code in the PATENTS file, you +# can obtain it at www.aomedia.org/license/patent. +# + +if("${AOM_TARGET_CPU}" STREQUAL "arm64") + set(AOM_ARCH_ARM 1) + set(AOM_ARCH_AARCH64 1) + set(RTCD_ARCH_ARM "yes") + + set(ARM64_FLAVORS "NEON;ARM_CRC32;NEON_DOTPROD;NEON_I8MM;SVE") + set(AOM_ARM_CRC32_DEFAULT_FLAG "-march=armv8-a+crc") + set(AOM_NEON_DOTPROD_DEFAULT_FLAG "-march=armv8.2-a+dotprod") + set(AOM_NEON_I8MM_DEFAULT_FLAG "-march=armv8.2-a+dotprod+i8mm") + set(AOM_SVE_DEFAULT_FLAG "-march=armv8.2-a+dotprod+i8mm+sve") + + # Check that the compiler flag to enable each flavor is supported by the + # compiler. This may not be the case for new architecture features on old + # compiler versions. + foreach(flavor ${ARM64_FLAVORS}) + if(ENABLE_${flavor} AND NOT DEFINED AOM_${flavor}_FLAG) + set(AOM_${flavor}_FLAG "${AOM_${flavor}_DEFAULT_FLAG}") + unset(FLAG_SUPPORTED) + check_c_compiler_flag("${AOM_${flavor}_FLAG}" FLAG_SUPPORTED) + if(NOT ${FLAG_SUPPORTED}) + set(ENABLE_${flavor} 0) + endif() + endif() + endforeach() + + # SVE requires that the Neon-SVE bridge header is also available. + if(ENABLE_SVE) + set(OLD_CMAKE_REQURED_FLAGS ${CMAKE_REQUIRED_FLAGS}) + set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${AOM_SVE_FLAG}") + aom_check_source_compiles("arm_neon_sve_bridge_available" " +#ifndef __ARM_NEON_SVE_BRIDGE +#error 1 +#endif +#include <arm_sve.h> +#include <arm_neon_sve_bridge.h>" HAVE_SVE_HEADERS) + set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQURED_FLAGS}) + if(HAVE_SVE_HEADERS EQUAL 0) + set(ENABLE_SVE 0) + endif() + endif() + + foreach(flavor ${ARM64_FLAVORS}) + if(ENABLE_${flavor}) + set(HAVE_${flavor} 1) + set(RTCD_HAVE_${flavor} "yes") + else() + set(HAVE_${flavor} 0) + string(TOLOWER ${flavor} flavor) + set(AOM_RTCD_FLAGS ${AOM_RTCD_FLAGS} --disable-${flavor}) + endif() + endforeach() + +elseif("${AOM_TARGET_CPU}" MATCHES "^arm") + set(AOM_ARCH_ARM 1) + set(RTCD_ARCH_ARM "yes") + + if(ENABLE_NEON) + set(HAVE_NEON 1) + set(RTCD_HAVE_NEON "yes") + else() + set(HAVE_NEON 0) + set(AOM_RTCD_FLAGS ${AOM_RTCD_FLAGS} --disable-neon) + endif() + +elseif("${AOM_TARGET_CPU}" MATCHES "ppc") + set(AOM_ARCH_PPC 1) + set(RTCD_ARCH_PPC "yes") + + if(ENABLE_VSX) + set(HAVE_VSX 1) + set(RTCD_HAVE_VSX "yes") + else() + set(HAVE_VSX 0) + set(AOM_RTCD_FLAGS ${AOM_RTCD_FLAGS} --disable-vsx) + endif() +elseif("${AOM_TARGET_CPU}" MATCHES "^x86") + if("${AOM_TARGET_CPU}" STREQUAL "x86") + set(AOM_ARCH_X86 1) + set(RTCD_ARCH_X86 "yes") + elseif("${AOM_TARGET_CPU}" STREQUAL "x86_64") + set(AOM_ARCH_X86_64 1) + set(RTCD_ARCH_X86_64 "yes") + endif() + + set(X86_FLAVORS "MMX;SSE;SSE2;SSE3;SSSE3;SSE4_1;SSE4_2;AVX;AVX2") + foreach(flavor ${X86_FLAVORS}) + if(ENABLE_${flavor} AND NOT disable_remaining_flavors) + set(HAVE_${flavor} 1) + set(RTCD_HAVE_${flavor} "yes") + else() + set(disable_remaining_flavors 1) + set(HAVE_${flavor} 0) + string(TOLOWER ${flavor} flavor) + set(AOM_RTCD_FLAGS ${AOM_RTCD_FLAGS} --disable-${flavor}) + endif() + endforeach() +endif() |