Revert "[sanitizer] Support compiler-rt builtins"

This reverts commit fd63314.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@309083 91177308-0d34-0410-b5e6-96231b3b80d8

Author: petrhosek

CMakeLists.txt

@@ -78,7 +78,6 @@ option(COMPILER_RT_EXTERNALIZE_DEBUGINFO
 # COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in.
 pythonize_bool(COMPILER_RT_DEBUG)
 
-include(HandleCompilerRT)
 include(config-ix)
 
 if(APPLE AND SANITIZER_MIN_OSX_VERSION AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
@@ -94,8 +93,6 @@ endif()
 option(SANITIZER_CAN_USE_CXXABI "Sanitizers can use cxxabi" ${use_cxxabi_default})
 pythonize_bool(SANITIZER_CAN_USE_CXXABI)
 
-option(SANITIZER_USE_COMPILER_RT "Use compiler-rt builtins instead of libgcc" OFF)
-
 #================================
 # Setup Compiler Flags
 #================================
@@ -231,19 +228,6 @@ append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS)
 
-# Set common link flags.
-append_list_if(COMPILER_RT_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs SANITIZER_COMMON_LINK_FLAGS)
-
-if (SANITIZER_USE_COMPILER_RT)
-  list(APPEND SANITIZER_COMMON_LINK_FLAGS -rtlib=compiler-rt)
-  find_compiler_rt_library(builtins COMPILER_RT_BUILTINS_LIBRARY)
-  list(APPEND SANITIZER_COMMON_LINK_LIBS ${COMPILER_RT_BUILTINS_LIBRARY})
-else()
-  append_list_if(COMPILER_RT_HAS_GCC_S_LIB gcc_s SANITIZER_COMMON_LINK_LIBS)
-endif()
-
-append_list_if(COMPILER_RT_HAS_LIBC c SANITIZER_COMMON_LINK_LIBS)
-
 # Warnings to turn off for all libraries, not just sanitizers.
 append_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
 

cmake/Modules/HandleCompilerRT.cmake

@@ -1,5 +1,4 @@
 include(CMakePushCheckState)
-include(CheckCCompilerFlag)
 include(CheckCXXCompilerFlag)
 include(CheckLibraryExists)
 include(CheckSymbolExists)
@@ -12,26 +11,6 @@ function(check_linker_flag flag out_var)
   cmake_pop_check_state()
 endfunction()
 
-check_library_exists(c fopen "" COMPILER_RT_HAS_LIBC)
-if (NOT SANITIZER_USE_COMPILER_RT)
-  check_library_exists(gcc_s __gcc_personality_v0 "" COMPILER_RT_HAS_GCC_S_LIB)
-endif()
-
-check_c_compiler_flag(-nodefaultlibs COMPILER_RT_HAS_NODEFAULTLIBS_FLAG)
-if (COMPILER_RT_HAS_NODEFAULTLIBS_FLAG)
-  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
-  if (COMPILER_RT_HAS_LIBC)
-    list(APPEND CMAKE_REQUIRED_LIBRARIES c)
-  endif ()
-  if (SANITIZER_USE_COMPILER_RT)
-    list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt)
-    find_compiler_rt_library(builtins COMPILER_RT_BUILTINS_LIBRARY)
-    list(APPEND CMAKE_REQUIRED_LIBRARIES "${COMPILER_RT_BUILTINS_LIBRARY}")
-  elseif (COMPILER_RT_HAS_GCC_S_LIB)
-    list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
-  endif ()
-endif ()
-
 # CodeGen options.
 check_cxx_compiler_flag(-fPIC                COMPILER_RT_HAS_FPIC_FLAG)
 check_cxx_compiler_flag(-fPIE                COMPILER_RT_HAS_FPIE_FLAG)
@@ -94,6 +73,7 @@ check_cxx_compiler_flag(/wd4800 COMPILER_RT_HAS_WD4800_FLAG)
 check_symbol_exists(__func__ "" COMPILER_RT_HAS_FUNC_SYMBOL)
 
 # Libraries.
+check_library_exists(c fopen "" COMPILER_RT_HAS_LIBC)
 check_library_exists(dl dlopen "" COMPILER_RT_HAS_LIBDL)
 check_library_exists(rt shm_open "" COMPILER_RT_HAS_LIBRT)
 check_library_exists(m pow "" COMPILER_RT_HAS_LIBM)

cmake/config-ix.cmake

@@ -40,7 +40,7 @@ set(ASAN_CFLAGS ${SANITIZER_COMMON_CFLAGS})
 
 append_rtti_flag(OFF ASAN_CFLAGS)
 
-set(ASAN_DYNAMIC_LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS})
+set(ASAN_DYNAMIC_LINK_FLAGS)
 
 if(ANDROID)
 # On Android, -z global does not do what it is documented to do.
@@ -65,8 +65,7 @@ append_list_if(COMPILER_RT_HAS_FTLS_MODEL_INITIAL_EXEC
   -ftls-model=initial-exec ASAN_DYNAMIC_CFLAGS)
 append_list_if(MSVC /DEBUG ASAN_DYNAMIC_LINK_FLAGS)
 
-set(ASAN_DYNAMIC_LIBS ${SANITIZER_COMMON_LINK_LIBS})
-
+append_list_if(COMPILER_RT_HAS_LIBC c ASAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBDL dl ASAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBRT rt ASAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBM m ASAN_DYNAMIC_LIBS)

lib/asan/CMakeLists.txt

@@ -29,8 +29,6 @@ add_compiler_rt_object_libraries(RTLSanCommon
 if(COMPILER_RT_HAS_LSAN)
   add_compiler_rt_component(lsan)
   if(APPLE)
-    set(LSAN_LINK_LIBS ${SANITIZER_COMMON_LINK_LIBS})
-
     add_weak_symbols("lsan" WEAK_SYMBOL_LINK_FLAGS)
     add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINK_FLAGS)
 
@@ -44,8 +42,7 @@ if(COMPILER_RT_HAS_LSAN)
                   RTSanitizerCommon
                   RTSanitizerCommonLibc
       CFLAGS ${LSAN_CFLAGS}
-      LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS} ${WEAK_SYMBOL_LINK_FLAGS}
-      LINK_LIBS ${LSAN_LINK_LIBS}
+      LINK_FLAGS ${WEAK_SYMBOL_LINK_FLAGS}
       PARENT_TARGET lsan)
   else()
     foreach(arch ${LSAN_SUPPORTED_ARCH})

lib/lsan/CMakeLists.txt

@@ -6,8 +6,6 @@ set_target_properties(stats PROPERTIES FOLDER "Compiler-RT Misc")
 if(APPLE)
   set(STATS_LIB_FLAVOR SHARED)
 
-  set(STATS_LINK_LIBS ${SANITIZER_COMMON_LINK_LIBS})
-
   add_weak_symbols("asan" WEAK_SYMBOL_LINK_FLAGS)
   add_weak_symbols("ubsan" WEAK_SYMBOL_LINK_FLAGS)
   add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINK_FLAGS)
@@ -25,8 +23,7 @@ add_compiler_rt_runtime(clang_rt.stats
   OBJECT_LIBS RTSanitizerCommon
               RTSanitizerCommonLibc
   CFLAGS ${SANITIZER_COMMON_CFLAGS}
-  LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS} ${WEAK_SYMBOL_LINK_FLAGS}
-  LINK_LIBS ${STATS_LINK_LIBS}
+  LINK_FLAGS ${WEAK_SYMBOL_LINK_FLAGS}
   PARENT_TARGET stats)
 
 add_compiler_rt_runtime(clang_rt.stats_client

lib/stats/CMakeLists.txt

@@ -109,8 +109,6 @@ if(APPLE)
     set_source_files_properties(${TSAN_ASM_SOURCES} PROPERTIES LANGUAGE C)
   endif()
 
-  set(TSAN_LINK_LIBS ${SANITIZER_COMMON_LINK_LIBS})
-
   add_weak_symbols("ubsan" WEAK_SYMBOL_LINK_FLAGS)
   add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINK_FLAGS)
 
@@ -124,8 +122,7 @@ if(APPLE)
                 RTSanitizerCommonLibc
                 RTUbsan
     CFLAGS ${TSAN_RTL_CFLAGS}
-    LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS} ${WEAK_SYMBOL_LINK_FLAGS}
-    LINK_LIBS ${TSAN_LINK_LIBS}
+    LINK_FLAGS ${WEAK_SYMBOL_LINK_FLAGS}
     PARENT_TARGET tsan)
   add_compiler_rt_object_libraries(RTTsan_dynamic
     OS ${TSAN_SUPPORTED_OS}

lib/tsan/CMakeLists.txt

@@ -10,12 +10,10 @@ set(DD_SOURCES
   dd_interceptors.cc
 )
 
-set(DD_LINKLIBS ${SANITIZER_COMMON_LINK_LIBS})
-
+set(DD_LINKLIBS)
 append_list_if(COMPILER_RT_HAS_LIBDL dl DD_LINKLIBS)
 append_list_if(COMPILER_RT_HAS_LIBRT rt DD_LINKLIBS)
 append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread DD_LINKLIBS)
-append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ DD_LINKLIBS)
 
 add_custom_target(dd)
 # Deadlock detector is currently supported on 64-bit Linux only.
@@ -42,7 +40,6 @@ if(CAN_TARGET_x86_64 AND UNIX AND NOT APPLE AND NOT ANDROID)
             $<TARGET_OBJECTS:RTInterception.${arch}>
             $<TARGET_OBJECTS:RTSanitizerCommon.${arch}>
             $<TARGET_OBJECTS:RTSanitizerCommonLibc.${arch}>
-    LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS}
     LINK_LIBS ${DD_LINKLIBS}
     PARENT_TARGET dd)
 endif()

lib/tsan/dd/CMakeLists.txt

@@ -34,12 +34,9 @@ set(UBSAN_CXXFLAGS ${SANITIZER_COMMON_CFLAGS})
 append_rtti_flag(ON UBSAN_CXXFLAGS)
 append_list_if(SANITIZER_CAN_USE_CXXABI -DUBSAN_CAN_USE_CXXABI UBSAN_CXXFLAGS)
 
-set(UBSAN_DYNAMIC_LIBS ${SANITIZER_COMMON_LINK_LIBS})
-
 append_list_if(COMPILER_RT_HAS_LIBDL dl UBSAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBRT rt UBSAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread UBSAN_DYNAMIC_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ UBSAN_DYNAMIC_LIBS)
 
 add_compiler_rt_component(ubsan)
 
@@ -158,7 +155,6 @@ else()
               RTSanitizerCommonLibc
               RTUbsan
       CFLAGS ${UBSAN_CFLAGS}
-      LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS}
       LINK_LIBS ${UBSAN_DYNAMIC_LIBS}
       PARENT_TARGET ubsan)
 
@@ -170,7 +166,6 @@ else()
               RTUbsan
               RTUbsan_cxx
       CFLAGS ${UBSAN_CXXFLAGS}
-      LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS}
       LINK_LIBS ${UBSAN_DYNAMIC_LIBS}
       PARENT_TARGET ubsan)