From 078b89b3c046d230ef3ad39494e5852184eb528b Mon Sep 17 00:00:00 2001 From: Abseil Team Date: Wed, 23 Oct 2019 19:35:39 -0700 Subject: Export of internal Abseil changes -- e54b9c7bbb0c58475676c268e2e19c69f4bce48a by Jorg Brown : 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 : 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 : Fix typo in flat_hash_map.h: exchaged -> exchanged PiperOrigin-RevId: 276295792 -- 7bbd8d18276eb110c8335743e35fceb662ddf3d6 by Samuel Benzaquen : Add assertions to verify use of iterators. PiperOrigin-RevId: 276283300 -- 677398a8ffcb1f59182cffe57a4fe7ff147a0404 by Laramie Leavitt : Migrate distribution_impl.h/cc to generate_real.h/cc. Combine the methods RandU64To into a single method: GenerateRealFromBits(). Remove rejection sampling from absl::uniform_real_distribution. PiperOrigin-RevId: 276158675 -- c60c9d11d24b0c546329d998e78e15a84b3153f5 by Abseil Team : Internal change PiperOrigin-RevId: 276126962 -- 4c840cab6a8d86efa29b397cafaf7520eece68cc by Andy Soffer : 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 : Internal change PiperOrigin-RevId: 276097452 GitOrigin-RevId: e54b9c7bbb0c58475676c268e2e19c69f4bce48a Change-Id: I02d84454bb71ab21ad3d39650acf6cc6e36f58d7 --- absl/copts/AbseilConfigureCopts.cmake | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) (limited to 'absl/copts') diff --git a/absl/copts/AbseilConfigureCopts.cmake b/absl/copts/AbseilConfigureCopts.cmake index b430873..b442646 100644 --- a/absl/copts/AbseilConfigureCopts.cmake +++ b/absl/copts/AbseilConfigureCopts.cmake @@ -5,10 +5,29 @@ set(ABSL_LSAN_LINKOPTS "") set(ABSL_HAVE_LSAN OFF) set(ABSL_DEFAULT_LINKOPTS "") +if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64") + if (MSVC) + set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_MSVC_X64_FLAGS}") + else() + set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_X64_FLAGS}") + endif() +elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "arm") + if ("${CMAKE_SIZEOF_VOID_P}" STREQUAL "8") + set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM64_FLAGS}") + elseif("${CMAKE_SIZEOF_VOID_P}" STREQUAL "4") + set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_ARM32_FLAGS}") + else() + message(WARNING "Value of CMAKE_SIZEOF_VOID_P (${CMAKE_SIZEOF_VOID_P}) is not supported.") + endif() +else() + message(WARNING "Value of CMAKE_SYSTEM_PROCESSOR (${CMAKE_SYSTEM_PROCESSOR}) is unknown and cannot be used to set ABSL_RANDOM_RANDEN_COPTS") + set(ABSL_RANDOM_RANDEN_COPTS "") +endif() + + if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") set(ABSL_DEFAULT_COPTS "${ABSL_GCC_FLAGS}") set(ABSL_TEST_COPTS "${ABSL_GCC_FLAGS};${ABSL_GCC_TEST_FLAGS}") - set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_X64_FLAGS}") elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") # MATCHES so we get both Clang and AppleClang if(MSVC) @@ -16,11 +35,9 @@ elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") set(ABSL_DEFAULT_COPTS "${ABSL_CLANG_CL_FLAGS}") set(ABSL_TEST_COPTS "${ABSL_CLANG_CL_FLAGS};${ABSL_CLANG_CL_TEST_FLAGS}") set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}") - set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_MSVC_X64_FLAGS}") else() set(ABSL_DEFAULT_COPTS "${ABSL_LLVM_FLAGS}") set(ABSL_TEST_COPTS "${ABSL_LLVM_FLAGS};${ABSL_LLVM_TEST_FLAGS}") - set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_X64_FLAGS}") if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang") # AppleClang doesn't have lsan # https://developer.apple.com/documentation/code_diagnostics @@ -34,12 +51,10 @@ elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") set(ABSL_DEFAULT_COPTS "${ABSL_MSVC_FLAGS}") set(ABSL_TEST_COPTS "${ABSL_MSVC_FLAGS};${ABSL_MSVC_TEST_FLAGS}") set(ABSL_DEFAULT_LINKOPTS "${ABSL_MSVC_LINKOPTS}") - set(ABSL_RANDOM_RANDEN_COPTS "${ABSL_RANDOM_HWAES_MSVC_X64_FLAGS}") else() message(WARNING "Unknown compiler: ${CMAKE_CXX_COMPILER}. Building with no default flags") set(ABSL_DEFAULT_COPTS "") set(ABSL_TEST_COPTS "") - set(ABSL_RANDOM_RANDEN_COPTS "") endif() if("${CMAKE_CXX_STANDARD}" EQUAL 98) -- cgit v1.2.3