078b89b3c0
--
e54b9c7bbb0c58475676c268e2e19c69f4bce48a by Jorg Brown <jorg@google.com>:
Tweak ABSL_PREDICT_TRUE slightly, for better code on some platforms and/or
optimization levels. "false || (x)" is more verbose than "!!(x)", but
ultimately more efficient.
For example, given this code:
void InitIfNecessary() {
if (ABSL_PREDICT_TRUE(NeedsInit())) {
SlowInitIfNecessary();
}
}
Clang with default optimization level will produce:
Before this CL After this CL
InitIfNecessary: InitIfNecessary:
push rbp push rbp
mov rbp, rsp mov rbp, rsp
call NeedsInit call NeedsInit
xor al, -1
xor al, -1
test al, 1 test al, 1
jne .LBB2_1 jne .LBB3_1
jmp .LBB2_2 jmp .LBB3_2
.LBB2_1: .LBB3_1:
call SlowInitIfNecessary call SlowInitIfNecessary
.LBB2_2: .LBB3_2:
pop rbp pop rbp
ret ret
PiperOrigin-RevId: 276401386
--
0a3c4dfd8342bf2b1b11a87f1c662c883f73cab7 by Abseil Team <absl-team@google.com>:
Fix comment nit: sem_open => sem_init.
The code calls sem_init, not sem_open, to initialize an unnamed semaphore.
(sem_open creates or opens a named semaphore.)
PiperOrigin-RevId: 276344072
--
b36a664e9459057509a90e83d3482e1d3a4c44c7 by Abseil Team <absl-team@google.com>:
Fix typo in flat_hash_map.h: exchaged -> exchanged
PiperOrigin-RevId: 276295792
--
7bbd8d18276eb110c8335743e35fceb662ddf3d6 by Samuel Benzaquen <sbenza@google.com>:
Add assertions to verify use of iterators.
PiperOrigin-RevId: 276283300
--
677398a8ffcb1f59182cffe57a4fe7ff147a0404 by Laramie Leavitt <lar@google.com>:
Migrate distribution_impl.h/cc to generate_real.h/cc.
Combine the methods RandU64To<Float,Double> into a single method:
GenerateRealFromBits().
Remove rejection sampling from absl::uniform_real_distribution.
PiperOrigin-RevId: 276158675
--
c60c9d11d24b0c546329d998e78e15a84b3153f5 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 276126962
--
4c840cab6a8d86efa29b397cafaf7520eece68cc by Andy Soffer <asoffer@google.com>:
Update CMakeLists.txt to address https://github.com/abseil/abseil-cpp/issues/365.
This does not cover every platform, but it does at least address the
first-order issue of assuming gcc implies x86.
PiperOrigin-RevId: 276116253
--
98da366e6b5d51afe5d7ac6722126aca23d85ee6 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 276097452
GitOrigin-RevId: e54b9c7bbb0c58475676c268e2e19c69f4bce48a
Change-Id: I02d84454bb71ab21ad3d39650acf6cc6e36f58d7
67 lines
2.5 KiB
CMake
67 lines
2.5 KiB
CMake
# See absl/copts/copts.py and absl/copts/generate_copts.py
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include(GENERATED_AbseilCopts)
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set(ABSL_LSAN_LINKOPTS "")
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set(ABSL_HAVE_LSAN OFF)
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set(ABSL_DEFAULT_LINKOPTS "")
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if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64")
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if (MSVC)
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_MSVC_X64_FLAGS}")
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else()
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_X64_FLAGS}")
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endif()
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "arm")
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if ("${CMAKE_SIZEOF_VOID_P}" STREQUAL "8")
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM64_FLAGS}")
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elseif("${CMAKE_SIZEOF_VOID_P}" STREQUAL "4")
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set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM32_FLAGS}")
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else()
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message(WARNING "Value of CMAKE_SIZEOF_VOID_P (${CMAKE_SIZEOF_VOID_P}) is not supported.")
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endif()
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else()
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message(WARNING "Value of CMAKE_SYSTEM_PROCESSOR (${CMAKE_SYSTEM_PROCESSOR}) is unknown and cannot be used to set ABSL_RANDOM_RANDEN_COPTS")
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set(ABSL_RANDOM_RANDEN_COPTS "")
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endif()
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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set(ABSL_DEFAULT_COPTS "${ABSL_GCC_FLAGS}")
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set(ABSL_TEST_COPTS "${ABSL_GCC_FLAGS};${ABSL_GCC_TEST_FLAGS}")
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elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
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# MATCHES so we get both Clang and AppleClang
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if(MSVC)
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# clang-cl is half MSVC, half LLVM
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set(ABSL_DEFAULT_COPTS "${ABSL_CLANG_CL_FLAGS}")
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set(ABSL_TEST_COPTS "${ABSL_CLANG_CL_FLAGS};${ABSL_CLANG_CL_TEST_FLAGS}")
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set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}")
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else()
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set(ABSL_DEFAULT_COPTS "${ABSL_LLVM_FLAGS}")
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set(ABSL_TEST_COPTS "${ABSL_LLVM_FLAGS};${ABSL_LLVM_TEST_FLAGS}")
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
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# AppleClang doesn't have lsan
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# https://developer.apple.com/documentation/code_diagnostics
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if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.5)
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set(ABSL_LSAN_LINKOPTS "-fsanitize=leak")
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set(ABSL_HAVE_LSAN ON)
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endif()
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endif()
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endif()
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elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
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set(ABSL_DEFAULT_COPTS "${ABSL_MSVC_FLAGS}")
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set(ABSL_TEST_COPTS "${ABSL_MSVC_FLAGS};${ABSL_MSVC_TEST_FLAGS}")
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set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}")
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else()
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message(WARNING "Unknown compiler: ${CMAKE_CXX_COMPILER}. Building with no default flags")
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set(ABSL_DEFAULT_COPTS "")
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set(ABSL_TEST_COPTS "")
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endif()
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if("${CMAKE_CXX_STANDARD}" EQUAL 98)
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message(FATAL_ERROR "Abseil requires at least C++11")
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elseif(NOT "${CMAKE_CXX_STANDARD}")
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message(STATUS "No CMAKE_CXX_STANDARD set, assuming 11")
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set(ABSL_CXX_STANDARD 11)
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else()
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set(ABSL_CXX_STANDARD "${CMAKE_CXX_STANDARD}")
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endif()
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