llvm-project/compiler-rt/lib/scudo/standalone/CMakeLists.txt

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add_compiler_rt_component(scudo_standalone)
include_directories(../..)
set(SCUDO_CFLAGS)
list(APPEND SCUDO_CFLAGS
[scudo][standalone] Optimization pass Summary: This introduces a bunch of small optimizations with the purpose of making the fastpath tighter: - tag more conditions as `LIKELY`/`UNLIKELY`: as a rule of thumb we consider that every operation related to the secondary is unlikely - attempt to reduce the number of potentially extraneous instructions - reorganize the `Chunk` header to not straddle a word boundary and use more appropriate types Note that some `LIKELY`/`UNLIKELY` impact might be less obvious as they are in slow paths (for example in `secondary.cc`), but at this point I am throwing a pretty wide net, and it's consistant and doesn't hurt. This was mosly done for the benfit of Android, but other platforms benefit from it too. An aarch64 Android benchmark gives: - before: ``` BM_youtube/min_time:15.000/repeats:4/manual_time_mean 445244 us 659385 us 4 BM_youtube/min_time:15.000/repeats:4/manual_time_median 445007 us 658970 us 4 BM_youtube/min_time:15.000/repeats:4/manual_time_stddev 885 us 1332 us 4 ``` - after: ``` BM_youtube/min_time:15.000/repeats:4/manual_time_mean 415697 us 621925 us 4 BM_youtube/min_time:15.000/repeats:4/manual_time_median 415913 us 622061 us 4 BM_youtube/min_time:15.000/repeats:4/manual_time_stddev 990 us 1163 us 4 ``` Additional since `-Werror=conversion` is enabled on some platforms we are built on, enable it upstream to catch things early: a few sign conversions had slept through and needed additional casting. Reviewers: hctim, morehouse, eugenis, vitalybuka Reviewed By: vitalybuka Subscribers: srhines, mgorny, javed.absar, kristof.beyls, delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D64664 llvm-svn: 366918
2019-07-25 00:36:01 +08:00
-Werror=conversion
-Wall
-nostdinc++)
# Remove -stdlib= which is unused when passing -nostdinc++.
string(REGEX REPLACE "-stdlib=[a-zA-Z+]*" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
append_list_if(COMPILER_RT_HAS_FFREESTANDING_FLAG -ffreestanding SCUDO_CFLAGS)
append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SCUDO_CFLAGS)
if(COMPILER_RT_DEBUG)
list(APPEND SCUDO_CFLAGS -O0)
else()
list(APPEND SCUDO_CFLAGS -O3)
endif()
set(SCUDO_LINK_FLAGS)
list(APPEND SCUDO_LINK_FLAGS -Wl,-z,defs,-z,now,-z,relro)
append_list_if(COMPILER_RT_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs SCUDO_LINK_FLAGS)
if(ANDROID)
list(APPEND SCUDO_CFLAGS -fno-emulated-tls)
# Put the shared library in the global group. For more details, see
# android-changes-for-ndk-developers.md#changes-to-library-search-order
append_list_if(COMPILER_RT_HAS_Z_GLOBAL -Wl,-z,global SCUDO_LINK_FLAGS)
endif()
set(SCUDO_HEADERS
allocator_config.h
atomic_helpers.h
bytemap.h
checksum.h
chunk.h
combined.h
flags.h
flags_parser.h
fuchsia.h
interface.h
internal_defs.h
linux.h
list.h
local_cache.h
mutex.h
platform.h
primary32.h
primary64.h
quarantine.h
release.h
report.h
secondary.h
size_class_map.h
stats.h
string_utils.h
tsd.h
tsd_exclusive.h
tsd_shared.h
vector.h
wrappers_c_checks.h
wrappers_c.h
)
set(SCUDO_SOURCES
checksum.cpp
crc32_hw.cpp
common.cpp
flags.cpp
flags_parser.cpp
fuchsia.cpp
linux.cpp
report.cpp
string_utils.cpp
)
# Enable the SSE 4.2 instruction set for crc32_hw.cpp, if available.
if (COMPILER_RT_HAS_MSSE4_2_FLAG)
set_source_files_properties(crc32_hw.cpp PROPERTIES COMPILE_FLAGS -msse4.2)
endif()
# Enable the AArch64 CRC32 feature for crc32_hw.cpp, if available.
# Note that it is enabled by default starting with armv8.1-a.
if (COMPILER_RT_HAS_MCRC_FLAG)
set_source_files_properties(crc32_hw.cpp PROPERTIES COMPILE_FLAGS -mcrc)
endif()
set(SCUDO_SOURCES_C_WRAPPERS
wrappers_c.cpp
)
set(SCUDO_SOURCES_CXX_WRAPPERS
wrappers_cpp.cpp
)
if(COMPILER_RT_HAS_SCUDO_STANDALONE)
add_compiler_rt_object_libraries(RTScudoStandalone
ARCHS ${SCUDO_STANDALONE_SUPPORTED_ARCH}
SOURCES ${SCUDO_SOURCES}
ADDITIONAL_HEADERS ${SCUDO_HEADERS}
CFLAGS ${SCUDO_CFLAGS})
add_compiler_rt_object_libraries(RTScudoStandaloneCWrappers
ARCHS ${SCUDO_STANDALONE_SUPPORTED_ARCH}
SOURCES ${SCUDO_SOURCES_C_WRAPPERS}
ADDITIONAL_HEADERS ${SCUDO_HEADERS}
CFLAGS ${SCUDO_CFLAGS})
add_compiler_rt_object_libraries(RTScudoStandaloneCxxWrappers
ARCHS ${SCUDO_STANDALONE_SUPPORTED_ARCH}
SOURCES ${SCUDO_SOURCES_CXX_WRAPPERS}
ADDITIONAL_HEADERS ${SCUDO_HEADERS}
CFLAGS ${SCUDO_CFLAGS})
add_compiler_rt_runtime(clang_rt.scudo_standalone
STATIC
ARCHS ${SCUDO_STANDALONE_SUPPORTED_ARCH}
SOURCES ${SCUDO_SOURCES} ${SCUDO_SOURCES_C_WRAPPERS}
ADDITIONAL_HEADERS ${SCUDO_HEADERS}
CFLAGS ${SCUDO_CFLAGS}
PARENT_TARGET scudo_standalone)
add_compiler_rt_runtime(clang_rt.scudo_standalone_cxx
STATIC
ARCHS ${SCUDO_STANDALONE_SUPPORTED_ARCH}
SOURCES ${SCUDO_SOURCES_CXX_WRAPPERS}
ADDITIONAL_HEADERS ${SCUDO_HEADERS}
CFLAGS ${SCUDO_CFLAGS}
PARENT_TARGET scudo_standalone)
if(COMPILER_RT_INCLUDE_TESTS)
add_subdirectory(tests)
endif()
endif()