According to the OpenMP standard, compiler must define _OPENMP macro,
which has value in format yyyymm, where yyyy is the year of the standard
and mm is the month of the standard. For OpenMP 5.0 this value must be
set to 201811.
llvm-svn: 368170
if `-fopenmp-simd` is specified alone, `_OPENMP` macro should not be
defined. If `-fopenmp-simd` is specified along with the `-fopenmp`,
`_OPENMP` macro should be defined with the value `201511`.
llvm-svn: 332852
OpenMP version.
If '-fopenmp' option is provided '-fopenmp-version=' allows to control,
which version of OpenMP must be supported. Currently it affects only the
value of _OPENMP define.
llvm-svn: 270838
OpenMP 4.5.
According to OpenMP 4.5 the _OPENMP macro name is defined to have the decimal value yyyymm where yyyy and mm are the year and month designations of the version of the OpenMP API that the implementation supports. Clang supports OpenMP 4.5 so updated value of _OPENMP macro to 201511.
llvm-svn: 270822
-fopenmp turns on OpenMP support and links libiomp5 as OpenMP library. Also there is -fopenmp={libiomp5|libgomp} option that allows to override effect of -fopenmp and link libgomp library (if -fopenmp=libgomp is specified).
Differential Revision: http://reviews.llvm.org/D9736
llvm-svn: 237769
Alexey Bataev