[CMake] Add -O1 in debug builds with LLVM_USE_SANITIZER

llvm-svn: 189747
2013-09-02 09:15:01 +00:00 · 2013-09-02 09:15:01 +00:00 · f9ab351b8a
parent d527cf89e6
commit f9ab351b8a
1 changed files with 4 additions and 0 deletions
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@ -240,6 +240,10 @@ macro(append_common_sanitizer_flags)
      NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")
    add_flag_if_supported("-gline-tables-only")
  endif()
+  # Use -O1 even in debug mode, otherwise sanitizers slowdown is too large.
+  if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
+    add_flag_if_supported("-O1")
+  endif()
 endmacro()

 # Turn on sanitizers if necessary.