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[CMake] Make optimizing sanitizer builds optional

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This behavior has been the default for a long time, so the default value is On, however this can make it difficult to debug sanitizer failures, so we should have an option to turn it off.

llvm-svn: 332628
This commit is contained in:
Chris Bieneman 2018-05-17 16:55:29 +00:00
parent 74d366f0da
commit c8ad1f12f2
2 changed files with 2 additions and 1 deletions
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1
CMakeLists.txt
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@ -438,6 +438,7 @@ endif( LLVM_USE_OPROFILE )
set(LLVM_USE_SANITIZER "" CACHE STRING
"Define the sanitizer used to build binaries and tests.")
option(LLVM_OPTIMIZE_SANITIZED_BUILDS "Pass -O1 on debug sanitizer builds" ON)
set(LLVM_LIB_FUZZING_ENGINE "" CACHE PATH
"Path to fuzzing library for linking with fuzz targets")

2
cmake/modules/HandleLLVMOptions.cmake
View File

@ -639,7 +639,7 @@ macro(append_common_sanitizer_flags)
add_flag_if_supported("-gline-tables-only" GLINE_TABLES_ONLY)
endif()
# Use -O1 even in debug mode, otherwise sanitizers slowdown is too large.
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND LLVM_OPTIMIZE_SANITIZED_BUILDS)
add_flag_if_supported("-O1" O1)
endif()
elseif (CLANG_CL)