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Remove unused variables '__kmp_build_check_*' for non assert builds. 

Add new LIBOMP_ENABLE_ASSERTIONS macro which can be set in a standalone build
or takes the value of LLVM_ENABLE_ASSERTIONS when inside llvm/projects.  This
change also defines the KMP_BUILD_ASSERT() macro to do nothing when ENABLE_ASSERTIONS
is off.  This means the __kmp_build_check_* types won't be defined and thus, no warnings.
http://lists.cs.uiuc.edu/pipermail/openmp-dev/2015-June/000719.html

Patch by Jack Howarth and Jonathan Peyton

llvm-svn: 239546
This commit is contained in:
Jonathan Peyton 2015-06-11 17:36:16 +00:00
parent 2d221406fa
commit 9919dfc3b6
3 changed files with 15 additions and 4 deletions
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9
openmp/runtime/CMakeLists.txt
View File

@ -173,13 +173,18 @@ else()
check_variable(cmake_build_type_lowercase "${build_type_possible_values}")
endif()
# Allow user to choose a suffix for the installation directory, or if part of
# LLVM build then just use LLVM_LIBDIR_SUFFIX
if(${LIBOMP_STANDALONE_BUILD})
# Allow user to choose a suffix for the installation directory, or if part of
# LLVM build then just use LLVM_LIBDIR_SUFFIX
set(LIBOMP_LIBDIR_SUFFIX "" CACHE STRING
"suffix of lib installation directory e.g., 64 => lib64")
# Should assertions be enabled? They are on by default, or it part of
# LLVM build then just use LLVM_ENABLE_ASSERTIONS
set(LIBOMP_ENABLE_ASSERTIONS TRUE CACHE BOOL
"enable assertions?")
else()
set(LIBOMP_LIBDIR_SUFFIX ${LLVM_LIBDIR_SUFFIX})
set(LIBOMP_ENABLE_ASSERTIONS ${LLVM_ENABLE_ASSERTIONS})
endif()
# Check valid values

4
openmp/runtime/cmake/Definitions.cmake
View File

@ -83,7 +83,9 @@ function(append_cpp_flags input_cpp_flags)
##################################
# Other conditional definitions
append_definitions("-D KMP_USE_ASSERT")
if(${LIBOMP_ENABLE_ASSERTIONS})
append_definitions("-D KMP_USE_ASSERT")
endif()
append_definitions("-D KMP_DYNAMIC_LIB")
if(${STUBS_LIBRARY})
append_definitions("-D KMP_STUB")

6
openmp/runtime/src/kmp_debug.h
View File

@ -42,7 +42,11 @@
#define __KMP_BUILD_ASSERT( expr, suffix ) typedef char __kmp_build_check_##suffix[ (expr) ? 1 : -1 ]
#define _KMP_BUILD_ASSERT( expr, suffix ) __KMP_BUILD_ASSERT( (expr), suffix )
#define KMP_BUILD_ASSERT( expr ) _KMP_BUILD_ASSERT( (expr), __LINE__ )
#ifdef KMP_USE_ASSERT
#define KMP_BUILD_ASSERT( expr ) _KMP_BUILD_ASSERT( (expr), __LINE__ )
#else
#define KMP_BUILD_ASSERT( expr ) /* nothing to do */
#endif
// -------------------------------------------------------------------------------------------------
// Run-time assertions.