compiler optimization analyzing

llvm clang toolchain for aarm64 tflite cmake -DCMAKE_TOOLCHAIN_FILE=../arm_compiler.cmake ../tensorflow/lite/examples/minimal make benchmark_model

arm_compiler.cmake

set(CMAKE_SYSTEM_NAME Linux) set(CMAKE_SYSTEM_PROCESSOR aarch64)

set(triple aarch64-linux-gnu) set(toolchain /home/jiae/toolchains/gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu)

set(CMAKE_SYSROOT ${toolchain}/aarch64-linux-gnu/libc)

set(CMAKE_C_COMPILER clang-10) set(CMAKE_CXX_COMPILER clang-10) set(CMAKE_AR llvm-ar)

set(CMAKE_C_FLAGS "-O3 --gcc-toolchain=${toolchain}") set(CMAKE_CXX_FLAGS "-O3 --gcc-toolchain=${toolchain}") set(CMAKE_ASM_FLAGS "-target aarch64-linux-gnu --gcc-toolchain=${toolchain}")

//overwrite O3 default flag set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG") set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG") set(CMAKE_ASM_FLAGS_RELEASE "-DNDEBUG")

set(CMAKE_EXE_LINKER_FLAGS "-fuse-ld=lld -L${toolchain}/aarch64-linux-gnu/libc/lib64 -L${toolchain}/lib/gcc/aarch64-linux-gnu/8.3.0 -lm -lstdc++")

set(CMAKE_C_COMPILER_FORCED TRUE) set(CMAKE_CXX_COMPILER_FORCED TRUE)

set(CMAKE_C_COMPILER_TARGET ${triple}) set(CMAKE_CXX_COMPILER_TARGET ${triple})

list(APPEND CMAKE_CXX_COMPILE_FEATURES cxx_std_11 cxx_std_17 )

set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

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