# This directory contains a large amount of C code which provides
# generic implementations of the core runtime library along with optimized
# architecture-specific code in various subdirectories.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
cmake_minimum_required(VERSION 3.20.0)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
project(CompilerRTBuiltins C ASM)
set(COMPILER_RT_STANDALONE_BUILD TRUE)
set(COMPILER_RT_BUILTINS_STANDALONE_BUILD TRUE)
set(COMPILER_RT_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
set(LLVM_COMMON_CMAKE_UTILS "${COMPILER_RT_SOURCE_DIR}/../cmake")
# Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0
"${COMPILER_RT_SOURCE_DIR}/cmake"
"${COMPILER_RT_SOURCE_DIR}/cmake/Modules"
"${LLVM_COMMON_CMAKE_UTILS}"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
)
include(base-config-ix)
include(CompilerRTUtils)
if (NOT LLVM_RUNTIMES_BUILD)
load_llvm_config()
endif()
construct_compiler_rt_default_triple()
include(SetPlatformToolchainTools)
if(APPLE)
include(CompilerRTDarwinUtils)
endif()
if(APPLE)
include(UseLibtool)
endif()
include(AddCompilerRT)
if(MINGW)
# Simplified version of what's set in cmake/config-ix.cmake; not including
# builtins, which are linked separately.
set(MINGW_LIBRARIES mingw32 moldname mingwex msvcrt advapi32 shell32
user32 kernel32 mingw32 moldname mingwex msvcrt)
endif()
endif()
if (COMPILER_RT_STANDALONE_BUILD)
# When compiler-rt is being built standalone, possibly as a cross-compilation
# target, the target may or may not want position independent code. This
# option provides an avenue through which the flag may be controlled when an
# LLVM configuration is not being utilized.
option(COMPILER_RT_BUILTINS_ENABLE_PIC
"Turns on or off -fPIC for the builtin library source"
ON)
endif()
include(builtin-config-ix)
include(CMakeDependentOption)
include(CMakePushCheckState)
option(COMPILER_RT_BUILTINS_HIDE_SYMBOLS
"Do not export any symbols from the static library." ON)
# TODO: Need to add a mechanism for logging errors when builtin source files are
# added to a sub-directory and not this CMakeLists file.
set(GENERIC_SOURCES
absvdi2.c
absvsi2.c
absvti2.c
adddf3.c
addsf3.c
addvdi3.c
addvsi3.c
addvti3.c
apple_versioning.c
ashldi3.c
ashlti3.c
ashrdi3.c
ashrti3.c
bswapdi2.c
bswapsi2.c
clzdi2.c
clzsi2.c
clzti2.c
cmpdi2.c
cmpti2.c
comparedf2.c
comparesf2.c
ctzdi2.c
ctzsi2.c
ctzti2.c
divdc3.c
divdf3.c
divdi3.c
divmoddi4.c
divmodsi4.c
divmodti4.c
divsc3.c
divsf3.c
divsi3.c
divti3.c
extendsfdf2.c
extendhfsf2.c
ffsdi2.c
ffssi2.c
ffsti2.c
fixdfdi.c
fixdfsi.c
fixdfti.c
fixsfdi.c
fixsfsi.c
fixsfti.c
fixunsdfdi.c
fixunsdfsi.c
fixunsdfti.c
fixunssfdi.c
fixunssfsi.c
fixunssfti.c
floatdidf.c
floatdisf.c
floatsidf.c
floatsisf.c
floattidf.c
floattisf.c
floatundidf.c
floatundisf.c
floatunsidf.c
floatunsisf.c
floatuntidf.c
floatuntisf.c
fp_mode.c
int_util.c
lshrdi3.c
lshrti3.c
moddi3.c
modsi3.c
modti3.c
muldc3.c
muldf3.c
muldi3.c
mulodi4.c
mulosi4.c
muloti4.c
mulsc3.c
mulsf3.c
multi3.c
mulvdi3.c
mulvsi3.c
mulvti3.c
negdf2.c
negdi2.c
negsf2.c
negti2.c
negvdi2.c
negvsi2.c
negvti2.c
os_version_check.c
paritydi2.c
paritysi2.c
parityti2.c
popcountdi2.c
popcountsi2.c
popcountti2.c
powidf2.c
powisf2.c
subdf3.c
subsf3.c
subvdi3.c
subvsi3.c
subvti3.c
trampoline_setup.c
truncdfhf2.c
truncdfsf2.c
truncsfhf2.c
ucmpdi2.c
ucmpti2.c
udivdi3.c
udivmoddi4.c
udivmodsi4.c
udivmodti4.c
udivsi3.c
udivti3.c
umoddi3.c
umodsi3.c
umodti3.c
)
# We only build BF16 files when "__bf16" is available.
set(BF16_SOURCES
extendbfsf2.c
truncdfbf2.c
truncxfbf2.c
truncsfbf2.c
)
set(GENERIC_TF_SOURCES
addtf3.c
comparetf2.c
divtc3.c
divtf3.c
extenddftf2.c
extendhftf2.c
extendsftf2.c
fixtfdi.c
fixtfsi.c
fixtfti.c
fixunstfdi.c
fixunstfsi.c
fixunstfti.c
floatditf.c
floatsitf.c
floattitf.c
floatunditf.c
floatunsitf.c
floatuntitf.c
multc3.c
multf3.c
powitf2.c
subtf3.c
trunctfdf2.c
trunctfhf2.c
trunctfsf2.c
)
option(COMPILER_RT_EXCLUDE_ATOMIC_BUILTIN
"Skip the atomic builtin (these should normally be provided by a shared library)"
On)
if(NOT FUCHSIA AND NOT COMPILER_RT_BAREMETAL_BUILD AND NOT COMPILER_RT_GPU_BUILD)
set(GENERIC_SOURCES
${GENERIC_SOURCES}
emutls.c
enable_execute_stack.c
eprintf.c
)
endif()
option(COMPILER_RT_LIBATOMIC_USE_PTHREAD
"Whether libatomic should use pthreads if available."
Off)
if(COMPILER_RT_LIBATOMIC_USE_PTHREAD)
add_compile_definitions(_LIBATOMIC_USE_PTHREAD)
endif()
if(COMPILER_RT_HAS_ATOMIC_KEYWORD AND NOT COMPILER_RT_EXCLUDE_ATOMIC_BUILTIN)
set(GENERIC_SOURCES
${GENERIC_SOURCES}
atomic.c
)
endif()
if(APPLE)
set(GENERIC_SOURCES
${GENERIC_SOURCES}
atomic_flag_clear.c
atomic_flag_clear_explicit.c
atomic_flag_test_and_set.c
atomic_flag_test_and_set_explicit.c
atomic_signal_fence.c
atomic_thread_fence.c
)
endif()
if (HAVE_UNWIND_H)
set(GENERIC_SOURCES
${GENERIC_SOURCES}
gcc_personality_v0.c
)
endif ()
if (NOT FUCHSIA)
set(GENERIC_SOURCES
${GENERIC_SOURCES}
clear_cache.c
)
endif()
# These files are used on 32-bit and 64-bit x86.
set(x86_ARCH_SOURCES
cpu_model/x86.c
)
if (NOT MSVC)
set(x86_ARCH_SOURCES
${x86_ARCH_SOURCES}
i386/fp_mode.c
)
endif ()
# Implement extended-precision builtins, assuming long double is 80 bits.
# long double is not 80 bits on Android or MSVC.
set(x86_80_BIT_SOURCES
divxc3.c
extendxftf2.c
fixxfdi.c
fixxfti.c
fixunsxfdi.c
fixunsxfsi.c
fixunsxfti.c
floatdixf.c
floattixf.c
floatundixf.c
floatuntixf.c
mulxc3.c
powixf2.c
trunctfxf2.c
)
if (NOT MSVC)
set(x86_64_SOURCES
${GENERIC_SOURCES}
${GENERIC_TF_SOURCES}
${x86_ARCH_SOURCES}
x86_64/floatdidf.c
x86_64/floatdisf.c
)
if (NOT WIN32)
set(x86_64_SOURCES
${x86_64_SOURCES}
x86_64/floatundidf.S
x86_64/floatundisf.S
)
endif()
if (NOT ANDROID)
set(x86_64_SOURCES
${x86_64_SOURCES}
${x86_80_BIT_SOURCES}
x86_64/floatdixf.c
)
if (NOT WIN32)
set(x86_64_SOURCES
${x86_64_SOURCES}
x86_64/floatundixf.S
)
endif()
endif()
# Darwin x86_64 Haswell
set(x86_64h_SOURCES ${x86_64_SOURCES})
if (WIN32)
set(x86_64_SOURCES
${x86_64_SOURCES}
x86_64/chkstk.S
)
endif()
set(i386_SOURCES
${GENERIC_SOURCES}
${x86_ARCH_SOURCES}
i386/ashldi3.S
i386/ashrdi3.S
i386/divdi3.S
i386/floatdidf.S
i386/floatdisf.S
i386/floatundidf.S
i386/floatundisf.S
i386/lshrdi3.S
i386/moddi3.S
i386/muldi3.S
i386/udivdi3.S
i386/umoddi3.S
)
if (NOT ANDROID)
set(i386_SOURCES
${i386_SOURCES}
${x86_80_BIT_SOURCES}
i386/floatdixf.S
i386/floatundixf.S
)
endif()
if (WIN32)
set(i386_SOURCES
${i386_SOURCES}
i386/chkstk.S
)
endif()
else () # MSVC
# Use C versions of functions when building on MSVC
# MSVC's assembler takes Intel syntax, not AT&T syntax.
# Also use only MSVC compilable builtin implementations.
set(x86_64_SOURCES
${GENERIC_SOURCES}
${x86_ARCH_SOURCES}
x86_64/floatdidf.c
x86_64/floatdisf.c
)
set(i386_SOURCES ${GENERIC_SOURCES} ${x86_ARCH_SOURCES})
endif () # if (NOT MSVC)
# builtin support for Targets that have Arm state or have Thumb2
set(arm_or_thumb2_base_SOURCES
arm/fp_mode.c
arm/bswapdi2.S
arm/bswapsi2.S
arm/clzdi2.S
arm/clzsi2.S
arm/comparesf2.S
arm/divmodsi4.S
arm/divsi3.S
arm/modsi3.S
arm/udivmodsi4.S
arm/udivsi3.S
arm/umodsi3.S
${GENERIC_SOURCES}
)
set(arm_sync_SOURCES
arm/sync_fetch_and_add_4.S
arm/sync_fetch_and_add_8.S
arm/sync_fetch_and_and_4.S
arm/sync_fetch_and_and_8.S
arm/sync_fetch_and_max_4.S
arm/sync_fetch_and_max_8.S
arm/sync_fetch_and_min_4.S
arm/sync_fetch_and_min_8.S
arm/sync_fetch_and_nand_4.S
arm/sync_fetch_and_nand_8.S
arm/sync_fetch_and_or_4.S
arm/sync_fetch_and_or_8.S
arm/sync_fetch_and_sub_4.S
arm/sync_fetch_and_sub_8.S
arm/sync_fetch_and_umax_4.S
arm/sync_fetch_and_umax_8.S
arm/sync_fetch_and_umin_4.S
arm/sync_fetch_and_umin_8.S
arm/sync_fetch_and_xor_4.S
arm/sync_fetch_and_xor_8.S
)
# builtin support for Thumb-only targets with very limited Thumb2 technology,
# such as v6-m and v8-m.baseline
set(thumb1_base_SOURCES
arm/divsi3.S
arm/udivsi3.S
arm/comparesf2.S
arm/addsf3.S
${GENERIC_SOURCES}
)
set(arm_EABI_SOURCES
arm/aeabi_cdcmp.S
arm/aeabi_cdcmpeq_check_nan.c
arm/aeabi_cfcmp.S
arm/aeabi_cfcmpeq_check_nan.c
arm/aeabi_dcmp.S
arm/aeabi_div0.c
arm/aeabi_drsub.c
arm/aeabi_fcmp.S
arm/aeabi_frsub.c
arm/aeabi_idivmod.S
arm/aeabi_ldivmod.S
arm/aeabi_memcmp.S
arm/aeabi_memcpy.S
arm/aeabi_memmove.S
arm/aeabi_memset.S
arm/aeabi_uidivmod.S
arm/aeabi_uldivmod.S
)
set(arm_Thumb1_JT_SOURCES
arm/switch16.S
arm/switch32.S
arm/switch8.S
arm/switchu8.S
)
set(arm_Thumb1_SjLj_EH_SOURCES
arm/restore_vfp_d8_d15_regs.S
arm/save_vfp_d8_d15_regs.S
)
set(arm_Thumb1_VFPv2_DP_SOURCES
arm/adddf3vfp.S
arm/divdf3vfp.S
arm/eqdf2vfp.S
arm/extendsfdf2vfp.S
arm/fixdfsivfp.S
arm/fixunsdfsivfp.S
arm/floatsidfvfp.S
arm/floatunssidfvfp.S
arm/gedf2vfp.S
arm/gtdf2vfp.S
arm/ledf2vfp.S
arm/ltdf2vfp.S
arm/muldf3vfp.S
arm/nedf2vfp.S
arm/negdf2vfp.S
arm/subdf3vfp.S
arm/truncdfsf2vfp.S
arm/unorddf2vfp.S
)
set(arm_Thumb1_VFPv2_SP_SOURCES
arm/addsf3vfp.S
arm/divsf3vfp.S
arm/eqsf2vfp.S
arm/fixsfsivfp.S
arm/fixunssfsivfp.S
arm/floatsisfvfp.S
arm/floatunssisfvfp.S
arm/gesf2vfp.S
arm/gtsf2vfp.S
arm/lesf2vfp.S
arm/ltsf2vfp.S
arm/mulsf3vfp.S
arm/negsf2vfp.S
arm/nesf2vfp.S
arm/subsf3vfp.S
arm/unordsf2vfp.S
)
set(arm_Thumb1_icache_SOURCES
arm/sync_synchronize.S
)
# thumb1 calling into Arm to cover support
set(arm_Thumb1_SOURCES
${arm_Thumb1_JT_SOURCES}
${arm_Thumb1_SjLj_EH_SOURCES}
${arm_Thumb1_VFPv2_DP_SOURCES}
${arm_Thumb1_VFPv2_SP_SOURCES}
${arm_Thumb1_icache_SOURCES}
)
# base functionality for Arm Targets prior to Arm v7-a and Armv6-m such as v6,
# v5t, v4t
set(arm_min_SOURCES
${arm_or_thumb2_base_SOURCES}
${arm_EABI_SOURCES}
)
if(MINGW)
set(arm_SOURCES
arm/aeabi_idivmod.S
arm/aeabi_ldivmod.S
arm/aeabi_uidivmod.S
arm/aeabi_uldivmod.S
arm/chkstk.S
${arm_or_thumb2_base_SOURCES}
${arm_sync_SOURCES}
)
set(thumb1_SOURCES
${thumb1_base_SOURCES}
)
elseif(NOT WIN32)
# TODO the EABI sources should only be added to EABI targets
set(arm_SOURCES
${arm_or_thumb2_base_SOURCES}
${arm_sync_SOURCES}
${arm_EABI_SOURCES}
${arm_Thumb1_SOURCES}
)
set(thumb1_SOURCES
${thumb1_base_SOURCES}
${arm_EABI_SOURCES}
)
endif()
set(aarch64_SOURCES
${GENERIC_TF_SOURCES}
${GENERIC_SOURCES}
cpu_model/aarch64.c
aarch64/fp_mode.c
)
if (COMPILER_RT_HAS_AARCH64_SME)
if (NOT COMPILER_RT_DISABLE_AARCH64_FMV AND COMPILER_RT_HAS_FNO_BUILTIN_FLAG AND (COMPILER_RT_HAS_AUXV OR COMPILER_RT_BAREMETAL_BUILD))
list(APPEND aarch64_SOURCES aarch64/sme-abi.S aarch64/sme-libc-mem-routines.S aarch64/sme-abi-init.c aarch64/sme-abi-vg.c aarch64/sme-libc-routines.c)
message(STATUS "AArch64 SME ABI routines enabled")
set_source_files_properties(aarch64/sme-libc-routines.c PROPERTIES COMPILE_FLAGS "-fno-builtin")
else()
if(COMPILER_RT_DISABLE_AARCH64_FMV)
message(WARNING "AArch64 SME ABI routines require function multiversioning support.")
endif()
if(NOT COMPILER_RT_HAS_FNO_BUILTIN_FLAG)
message(WARNING "AArch64 SME ABI routines require '-fno-builtin'")
endif()
if(NOT (COMPILER_RT_HAS_AUXV OR COMPILER_RT_BAREMETAL_BUILD))
message(WARNING "AArch64 SME ABI routines requires sys/auxv.h or COMPILER_RT_BAREMETAL_BUILD flag")
endif()
message(STATUS "AArch64 SME ABI routines disabled")
endif()
endif()
# Generate outline atomics helpers from lse.S base
set(OA_HELPERS_DIR "${CMAKE_CURRENT_BINARY_DIR}/outline_atomic_helpers.dir")
file(MAKE_DIRECTORY "${OA_HELPERS_DIR}")
if(CMAKE_HOST_UNIX)
set(COMPILER_RT_LINK_OR_COPY create_symlink)
else()
set(COMPILER_RT_LINK_OR_COPY copy)
endif()
foreach(pat cas swp ldadd ldclr ldeor ldset)
foreach(size 1 2 4 8 16)
foreach(model 1 2 3 4 5)
if(pat STREQUAL "cas" OR NOT size STREQUAL "16")
set(source_asm "${CMAKE_CURRENT_SOURCE_DIR}/aarch64/lse.S")
set(helper_asm "${OA_HELPERS_DIR}/outline_atomic_${pat}${size}_${model}.S")
add_custom_command(
OUTPUT "${helper_asm}"
COMMAND ${CMAKE_COMMAND} -E ${COMPILER_RT_LINK_OR_COPY} "${source_asm}" "${helper_asm}"
DEPENDS "${source_asm}"
)
set_source_files_properties("${helper_asm}"
PROPERTIES
COMPILE_DEFINITIONS "L_${pat};SIZE=${size};MODEL=${model}"
INCLUDE_DIRECTORIES "${CMAKE_CURRENT_SOURCE_DIR}"
)
list(APPEND aarch64_SOURCES "${helper_asm}")
endif()
endforeach(model)
endforeach(size)
endforeach(pat)
if (MINGW)
set(aarch64_SOURCES
${aarch64_SOURCES}
aarch64/chkstk.S
)
endif()
set(amdgcn_SOURCES ${GENERIC_SOURCES})
set(armv4t_SOURCES ${arm_min_SOURCES})
set(armv5te_SOURCES ${arm_min_SOURCES})
set(armv6_SOURCES ${arm_min_SOURCES})
set(armhf_SOURCES ${arm_SOURCES})
set(armv7_SOURCES ${arm_SOURCES})
set(armv7s_SOURCES ${arm_SOURCES})
set(armv7k_SOURCES ${arm_SOURCES})
set(arm64_SOURCES ${aarch64_SOURCES})
set(arm64e_SOURCES ${aarch64_SOURCES})
set(arm64_32_SOURCES ${aarch64_SOURCES})
# macho_embedded archs
set(armv6m_SOURCES ${thumb1_SOURCES})
set(armv7m_SOURCES ${arm_SOURCES})
set(armv7em_SOURCES ${arm_SOURCES})
set(armv8m.base_SOURCES ${thumb1_SOURCES})
set(armv8m.main_SOURCES ${arm_SOURCES})
set(armv8.1m.main_SOURCES ${arm_SOURCES})
# 8-bit AVR MCU
set(avr_SOURCES
avr/mulqi3.S
avr/mulhi3.S
avr/exit.S
avr/divmodhi4.S
avr/udivmodhi4.S
avr/divmodqi4.S
avr/udivmodqi4.S
${GENERIC_SOURCES}
)
# hexagon arch
set(hexagon_SOURCES
hexagon/common_entry_exit_abi1.S
hexagon/common_entry_exit_abi2.S
hexagon/common_entry_exit_legacy.S
hexagon/dfaddsub.S
hexagon/dfdiv.S
hexagon/dffma.S
hexagon/dfminmax.S
hexagon/dfmul.S
hexagon/dfsqrt.S
hexagon/divdi3.S
hexagon/divsi3.S
hexagon/fastmath2_dlib_asm.S
hexagon/fastmath2_ldlib_asm.S
hexagon/fastmath_dlib_asm.S
hexagon/memcpy_forward_vp4cp4n2.S
hexagon/memcpy_likely_aligned.S
hexagon/moddi3.S
hexagon/modsi3.S
hexagon/sfdiv_opt.S
hexagon/sfsqrt_opt.S
hexagon/udivdi3.S
hexagon/udivmoddi4.S
hexagon/udivmodsi4.S
hexagon/udivsi3.S
hexagon/umoddi3.S
hexagon/umodsi3.S
${GENERIC_SOURCES}
${GENERIC_TF_SOURCES}
)
set(loongarch_SOURCES
loongarch/fp_mode.c
${GENERIC_SOURCES}
${GENERIC_TF_SOURCES}
)
set(loongarch64_SOURCES
${loongarch_SOURCES}
)
set(mips_SOURCES ${GENERIC_SOURCES})
set(mipsel_SOURCES ${mips_SOURCES})
set(mips64_SOURCES ${GENERIC_TF_SOURCES}
${mips_SOURCES})
set(mips64el_SOURCES ${GENERIC_TF_SOURCES}
${mips_SOURCES})
set(nvptx64_SOURCES ${GENERIC_SOURCES})
set(powerpc_SOURCES ${GENERIC_SOURCES})
set(powerpcspe_SOURCES ${GENERIC_SOURCES})
set(powerpc64_SOURCES
ppc/divtc3.c
ppc/fixtfdi.c
ppc/fixunstfdi.c
ppc/floatditf.c
ppc/floatunditf.c
ppc/gcc_qadd.c
ppc/gcc_qdiv.c
ppc/gcc_qmul.c
ppc/gcc_qsub.c
ppc/multc3.c
${GENERIC_SOURCES}
)
# These routines require __int128, which isn't supported on AIX.
if (NOT OS_NAME MATCHES "AIX")
set(powerpc64_SOURCES
ppc/floattitf.c
ppc/fixtfti.c
ppc/fixunstfti.c
${powerpc64_SOURCES}
)
endif()
set(powerpc64le_SOURCES ${powerpc64_SOURCES})
set(riscv_SOURCES
cpu_model/riscv.c
riscv/fp_mode.c
riscv/save.S
riscv/restore.S
${GENERIC_SOURCES}
${GENERIC_TF_SOURCES}
)
set(riscv32_SOURCES
riscv/mulsi3.S
${riscv_SOURCES}
)
set(riscv64_SOURCES
riscv/muldi3.S
${riscv_SOURCES}
)
set(sparc_SOURCES ${GENERIC_SOURCES} ${GENERIC_TF_SOURCES})
set(sparcv9_SOURCES ${GENERIC_SOURCES} ${GENERIC_TF_SOURCES})
set(wasm32_SOURCES
${GENERIC_TF_SOURCES}
${GENERIC_SOURCES}
)
set(wasm64_SOURCES
${GENERIC_TF_SOURCES}
${GENERIC_SOURCES}
)
set(ve_SOURCES
ve/grow_stack.S
ve/grow_stack_align.S
${GENERIC_TF_SOURCES}
${GENERIC_SOURCES})
add_custom_target(builtins)
set_target_properties(builtins PROPERTIES FOLDER "Compiler-RT/Metatargets")
option(COMPILER_RT_ENABLE_SOFTWARE_INT128
"Enable the int128 builtin routines for all targets."
OFF)
if (APPLE)
add_subdirectory(Darwin-excludes)
add_subdirectory(macho_embedded)
darwin_add_builtin_libraries(${BUILTIN_SUPPORTED_OS})
else ()
set(BUILTIN_CFLAGS "")
add_security_warnings(BUILTIN_CFLAGS 0)
if (COMPILER_RT_HAS_FCF_PROTECTION_FLAG)
append_list_if(COMPILER_RT_ENABLE_CET -fcf-protection=full BUILTIN_CFLAGS)
endif()
append_list_if(COMPILER_RT_HAS_STD_C11_FLAG -std=c11 BUILTIN_CFLAGS)
append_list_if(COMPILER_RT_HAS_WBUILTIN_DECLARATION_MISMATCH_FLAG -Werror=builtin-declaration-mismatch BUILTIN_CFLAGS)
# Don't embed directives for picking any specific CRT
if (MSVC)
set(CMAKE_MSVC_RUNTIME_LIBRARY "")
append_list_if(COMPILER_RT_HAS_ZL_FLAG /Zl BUILTIN_CFLAGS)
endif()
# These flags would normally be added to CMAKE_C_FLAGS by the llvm
# cmake step. Add them manually if this is a standalone build.
if(COMPILER_RT_STANDALONE_BUILD)
if(COMPILER_RT_BUILTINS_ENABLE_PIC)
append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC BUILTIN_CFLAGS)
endif()
append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin BUILTIN_CFLAGS)
if(COMPILER_RT_BUILTINS_HIDE_SYMBOLS)
append_list_if(COMPILER_RT_HAS_VISIBILITY_HIDDEN_FLAG -fvisibility=hidden BUILTIN_CFLAGS)
endif()
if(NOT COMPILER_RT_DEBUG)
append_list_if(COMPILER_RT_HAS_OMIT_FRAME_POINTER_FLAG -fomit-frame-pointer BUILTIN_CFLAGS)
endif()
endif()
# Directly targeting the GPU requires a few extra flags.
if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "amdgcn|nvptx")
append_list_if(COMPILER_RT_HAS_FFREESTANDING_FLAG -ffreestanding BUILTIN_CFLAGS)
append_list_if(COMPILER_RT_HAS_NOGPULIB_FLAG -nogpulib BUILTIN_CFLAGS)
append_list_if(COMPILER_RT_HAS_FLTO_FLAG -flto BUILTIN_CFLAGS)
append_list_if(COMPILER_RT_HAS_FCONVERGENT_FUNCTIONS_FLAG
-fconvergent-functions BUILTIN_CFLAGS)
# AMDGPU targets want to use a generic ABI.
if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "amdgcn")
append_list_if(COMPILER_RT_HAS_CODE_OBJECT_VERSION_FLAG
"SHELL:-Xclang -mcode-object-version=none" BUILTIN_CFLAGS)
endif()
endif()
set(BUILTIN_DEFS "")
if(COMPILER_RT_BUILTINS_HIDE_SYMBOLS)
append_list_if(COMPILER_RT_HAS_VISIBILITY_HIDDEN_FLAG VISIBILITY_HIDDEN BUILTIN_DEFS)
endif()
if(COMPILER_RT_DISABLE_AARCH64_FMV)
list(APPEND BUILTIN_DEFS DISABLE_AARCH64_FMV)
endif()
append_list_if(COMPILER_RT_HAS_ASM_LSE HAS_ASM_LSE BUILTIN_DEFS)
foreach (arch ${BUILTIN_SUPPORTED_ARCH})
if (CAN_TARGET_${arch})
cmake_push_check_state()
# TODO: we should probably make most of the checks in builtin-config depend on the target flags.
message(STATUS "Performing additional configure checks with target flags: ${TARGET_${arch}_CFLAGS}")
set(BUILTIN_CFLAGS_${arch} ${BUILTIN_CFLAGS})
list(APPEND CMAKE_REQUIRED_FLAGS ${TARGET_${arch}_CFLAGS} ${BUILTIN_CFLAGS_${arch}})
# For ARM archs, exclude any VFP builtins if VFP is not supported
if (${arch} MATCHES "^(arm|armhf|armv7|armv7s|armv7k|armv7m|armv7em|armv8m.main|armv8.1m.main)$")
string(REPLACE ";" " " _TARGET_${arch}_CFLAGS "${TARGET_${arch}_CFLAGS}")
check_compile_definition(__ARM_FP "${CMAKE_C_FLAGS} ${_TARGET_${arch}_CFLAGS}" COMPILER_RT_HAS_${arch}_VFP)
if(NOT COMPILER_RT_HAS_${arch}_VFP)
list(REMOVE_ITEM ${arch}_SOURCES ${arm_Thumb1_VFPv2_DP_SOURCES} ${arm_Thumb1_VFPv2_SP_SOURCES} ${arm_Thumb1_SjLj_EH_SOURCES})
else()
# Exclude any double-precision builtins if VFP is single-precision-only
try_compile_only(COMPILER_RT_HAS_${arch}_VFP_DP
SOURCE "#if !(__ARM_FP & 0x8)
#error No double-precision support!
#endif
int main(void) { return 0; }")
if(NOT COMPILER_RT_HAS_${arch}_VFP_DP)
list(REMOVE_ITEM ${arch}_SOURCES ${arm_Thumb1_VFPv2_DP_SOURCES})
endif()
endif()
endif()
check_c_source_compiles("_Float16 foo(_Float16 x) { return x; }
int main(void) { return 0; }"
COMPILER_RT_HAS_${arch}_FLOAT16)
append_list_if(COMPILER_RT_HAS_${arch}_FLOAT16 -DCOMPILER_RT_HAS_FLOAT16 BUILTIN_CFLAGS_${arch})
check_c_source_compiles("__bf16 foo(__bf16 x) { return x; }
int main(void) { return 0; }"
COMPILER_RT_HAS_${arch}_BFLOAT16)
# Build BF16 files only when "__bf16" is available.
if(COMPILER_RT_HAS_${arch}_BFLOAT16)
list(APPEND ${arch}_SOURCES ${BF16_SOURCES})
endif()
# Remove a generic C builtin when an arch-specific builtin is specified.
filter_builtin_sources(${arch}_SOURCES ${arch})
# Needed for clear_cache on debug mode, due to r7's usage in inline asm.
# Release mode already sets it via -O2/3, Debug mode doesn't.
if (${arch} STREQUAL "armhf")
list(APPEND BUILTIN_CFLAGS_${arch} -fomit-frame-pointer -DCOMPILER_RT_ARMHF_TARGET)
endif()
# For RISCV32, we must force enable int128 for compiling long
# double routines.
if(COMPILER_RT_ENABLE_SOFTWARE_INT128 OR "${arch}" STREQUAL "riscv32")
list(APPEND BUILTIN_CFLAGS_${arch} -fforce-enable-int128)
endif()
add_compiler_rt_runtime(clang_rt.builtins
STATIC
ARCHS ${arch}
DEPS ${deps_${arch}}
SOURCES ${${arch}_SOURCES}
DEFS ${BUILTIN_DEFS}
CFLAGS ${BUILTIN_CFLAGS_${arch}}
PARENT_TARGET builtins)
cmake_pop_check_state()
endif ()
endforeach ()
endif ()
add_dependencies(compiler-rt builtins)
option(COMPILER_RT_BUILD_STANDALONE_LIBATOMIC
"Build standalone shared atomic library."
OFF)
if(COMPILER_RT_BUILD_STANDALONE_LIBATOMIC)
add_custom_target(builtins-standalone-atomic)
set(BUILTIN_TYPE SHARED)
if(OS_NAME MATCHES "AIX")
include(CompilerRTAIXUtils)
if(NOT COMPILER_RT_LIBATOMIC_LINK_FLAGS)
get_aix_libatomic_default_link_flags(COMPILER_RT_LIBATOMIC_LINK_FLAGS
"${CMAKE_CURRENT_SOURCE_DIR}/ppc/atomic.exp")
endif()
# For different versions of cmake, SHARED behaves differently. For some
# versions, we might need MODULE rather than SHARED.
get_aix_libatomic_type(BUILTIN_TYPE)
else()
list(APPEND COMPILER_RT_LIBATOMIC_LINK_FLAGS -nodefaultlibs)
endif()
foreach (arch ${BUILTIN_SUPPORTED_ARCH})
if(CAN_TARGET_${arch})
list(APPEND COMPILER_RT_LIBATOMIC_LINK_LIBS_${arch} clang_rt.builtins-${arch})
append_list_if(MINGW "${MINGW_LIBRARIES}" COMPILER_RT_LIBATOMIC_LINK_LIBS_${arch})
add_compiler_rt_runtime(clang_rt.atomic
${BUILTIN_TYPE}
ARCHS ${arch}
SOURCES atomic.c
LINK_FLAGS ${COMPILER_RT_LIBATOMIC_LINK_FLAGS}
LINK_LIBS ${COMPILER_RT_LIBATOMIC_LINK_LIBS_${arch}}
PARENT_TARGET builtins-standalone-atomic)
endif()
endforeach()
# FIXME: On AIX, we have to archive built shared libraries into a static
# archive, i.e., libatomic.a. Once cmake adds support of such usage for AIX,
# this ad-hoc part can be removed.
if(OS_NAME MATCHES "AIX")
archive_aix_libatomic(clang_rt.atomic libatomic
ARCHS ${BUILTIN_SUPPORTED_ARCH}
PARENT_TARGET builtins-standalone-atomic)
endif()
add_dependencies(compiler-rt builtins-standalone-atomic)
endif()
cmake_dependent_option(COMPILER_RT_BUILD_CRT "Build crtbegin.o/crtend.o" ON "COMPILER_RT_HAS_CRT" OFF)
if (COMPILER_RT_BUILD_CRT)
add_compiler_rt_component(crt)
option(COMPILER_RT_CRT_USE_EH_FRAME_REGISTRY "Use eh_frame in crtbegin.o/crtend.o" ON)
include(CheckSectionExists)
check_section_exists(".init_array" COMPILER_RT_HAS_INITFINI_ARRAY
SOURCE "volatile int x;\n__attribute__((constructor)) void f(void) {x = 0;}\nint main(void) { return 0; }\n")
append_list_if(COMPILER_RT_HAS_STD_C11_FLAG -std=c11 CRT_CFLAGS)
append_list_if(COMPILER_RT_HAS_INITFINI_ARRAY -DCRT_HAS_INITFINI_ARRAY CRT_CFLAGS)
append_list_if(COMPILER_RT_CRT_USE_EH_FRAME_REGISTRY -DEH_USE_FRAME_REGISTRY CRT_CFLAGS)
append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC CRT_CFLAGS)
append_list_if(COMPILER_RT_HAS_WNO_PEDANTIC -Wno-pedantic CRT_CFLAGS)
if (COMPILER_RT_HAS_FCF_PROTECTION_FLAG)
append_list_if(COMPILER_RT_ENABLE_CET -fcf-protection=full CRT_CFLAGS)
endif()
foreach(arch ${BUILTIN_SUPPORTED_ARCH})
add_compiler_rt_runtime(clang_rt.crtbegin
OBJECT
ARCHS ${arch}
SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtbegin.c
CFLAGS ${CRT_CFLAGS}
PARENT_TARGET crt)
add_compiler_rt_runtime(clang_rt.crtend
OBJECT
ARCHS ${arch}
SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtend.c
CFLAGS ${CRT_CFLAGS}
PARENT_TARGET crt)
endforeach()
add_dependencies(compiler-rt crt)
endif()
Codebase Browser
llvm