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clang-p2996/openmp/cmake/DetectTestCompiler/CMakeLists.txt
Jonas Hahnfeld 6f9e25d382 [CMake] Add -fno-experimental-isel for testing
GlobalISel doesn't yet implement blockaddress and falls back to
SelectionDAG. This results in additional branch instruction to
the next basic block which breaks the OMPT tests.
Disable GlobalISel for now when compiling the tests because fixing
them is not easily possible. See http://llvm.org/PR36313 for full
discussion history.

Differential Revision: https://reviews.llvm.org/D43195

llvm-svn: 325218
2018-02-15 08:10:22 +00:00

40 lines
1.3 KiB
CMake

cmake_minimum_required(VERSION 2.8)
project(DetectTestCompiler C CXX)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
function(write_compiler_information lang)
set(information "${CMAKE_${lang}_COMPILER}")
set(information "${information}\\;${CMAKE_${lang}_COMPILER_ID}")
set(information "${information}\\;${CMAKE_${lang}_COMPILER_VERSION}")
set(information "${information}\\;${${lang}_FLAGS}")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${lang}CompilerInformation.txt ${information})
endfunction(write_compiler_information)
find_package(OpenMP)
if (NOT OpenMP_Found)
set(OpenMP_C_FLAGS "-fopenmp")
set(OpenMP_CXX_FLAGS "-fopenmp")
endif()
set(C_FLAGS ${flags} ${OpenMP_C_FLAGS})
set(CXX_FLAGS ${flags} ${OpenMP_CXX_FLAGS})
# TODO: Implement blockaddress in GlobalISel and remove this flag!
if (CMAKE_C_COMPILER_ID STREQUAL "Clang")
check_c_compiler_flag("-fno-experimental-isel" C_HAS_EXPERIMENTAL_ISEL_FLAG)
check_cxx_compiler_flag("-fno-experimental-isel" CXX_HAS_EXPERIMENTAL_ISEL_FLAG)
macro(add_experimental_isel_flag lang)
if (${lang}_HAS_EXPERIMENTAL_ISEL_FLAG)
set(${lang}_FLAGS "-fno-experimental-isel ${${lang}_FLAGS}")
endif()
endmacro(add_experimental_isel_flag)
add_experimental_isel_flag(C)
add_experimental_isel_flag(CXX)
endif()
write_compiler_information(C)
write_compiler_information(CXX)