[OpenMP] Change OpenMP default version in documentation and help text…

… for -fopenmp-version

As discussed on the weekly OpenMP meeting on the second of August 2023, the default version
in the OpenMP documentation shoud be changed from OpenMP 5.0 to 5.1.

Differential Revision: https://reviews.llvm.org/D156901

clang/docs/OpenMPSupport.rst

@@ -26,7 +26,8 @@ PPC64[LE] and has `basic support for Cuda devices`_.
 In addition, the LLVM OpenMP runtime `libomp` supports the OpenMP Tools
 Interface (OMPT) on x86, x86_64, AArch64, and PPC64 on Linux, Windows, and macOS.
 
-For the list of supported features from OpenMP 5.0 see `OpenMP implementation details`_.
+For the list of supported features from OpenMP 5.0 and 5.1
+see `OpenMP implementation details`_ and `OpenMP 51 implementation details`_.
 
 General improvements
 ====================
@@ -252,6 +253,8 @@ implementation.
 +------------------------------+--------------------------------------------------------------+--------------------------+-----------------------------------------------------------------------+
 
 
+.. _OpenMP 51 implementation details:
+
 OpenMP 5.1 Implementation Details
 =================================
 

clang/include/clang/Driver/Options.td

@@ -3200,7 +3200,7 @@ def fno_openmp : Flag<["-"], "fno-openmp">, Group<f_Group>,
 def fopenmp_version_EQ : Joined<["-"], "fopenmp-version=">, Group<f_Group>,
   Flags<[NoArgumentUnused]>,
   Visibility<[ClangOption, CC1Option, FlangOption, FC1Option]>,
-  HelpText<"Set OpenMP version (e.g. 45 for OpenMP 4.5, 50 for OpenMP 5.0). Default value is 50 for Clang and 11 for Flang">;
+  HelpText<"Set OpenMP version (e.g. 45 for OpenMP 4.5, 51 for OpenMP 5.1). Default value is 51 for Clang">;
 defm openmp_extensions: BoolFOption<"openmp-extensions",
   LangOpts<"OpenMPExtensions">, DefaultTrue,
   PosFlag<SetTrue, [NoArgumentUnused], [ClangOption, CC1Option],

flang/test/Driver/driver-help-hidden.f90

@@ -74,7 +74,7 @@
 ! CHECK-NEXT: -fopenmp-targets=<value>
 ! CHECK-NEXT:                         Specify comma-separated list of triples OpenMP offloading targets to be supported
 ! CHECK-NEXT: -fopenmp-version=<value>
-! CHECK-NEXT:                         Set OpenMP version (e.g. 45 for OpenMP 4.5, 50 for OpenMP 5.0). Default value is 50 for Clang and 11 for Flang
+! CHECK-NEXT:                         Set OpenMP version (e.g. 45 for OpenMP 4.5, 51 for OpenMP 5.1). Default value is 51 for Clang
 ! CHECK-NEXT: -fopenmp                Parse OpenMP pragmas and generate parallel code.
 ! CHECK-NEXT: -foptimization-record-file=<file>
 ! CHECK-NEXT:                         Specify the output name of the file containing the optimization remarks. Implies -fsave-optimization-record. On Darwin platforms, this cannot be used with multiple -arch <arch> options.

flang/test/Driver/driver-help.f90

@@ -62,7 +62,7 @@
 ! HELP-NEXT: -fopenmp-targets=<value>
 ! HELP-NEXT:                         Specify comma-separated list of triples OpenMP offloading targets to be supported
 ! HELP-NEXT: -fopenmp-version=<value>
-! HELP-NEXT:                         Set OpenMP version (e.g. 45 for OpenMP 4.5, 50 for OpenMP 5.0). Default value is 50 for Clang and 11 for Flang
+! HELP-NEXT:                         Set OpenMP version (e.g. 45 for OpenMP 4.5, 51 for OpenMP 5.1). Default value is 51 for Clang
 ! HELP-NEXT: -fopenmp                Parse OpenMP pragmas and generate parallel code.
 ! HELP-NEXT: -foptimization-record-file=<file>
 ! HELP-NEXT:                         Specify the output name of the file containing the optimization remarks. Implies -fsave-optimization-record. On Darwin platforms, this cannot be used with multiple -arch <arch> options.
@@ -202,7 +202,7 @@
 ! HELP-FC1-NEXT:                         Generate code only for an OpenMP target device.
 ! HELP-FC1-NEXT: -fopenmp-target-debug   Enable debugging in the OpenMP offloading device RTL
 ! HELP-FC1-NEXT: -fopenmp-version=<value>
-! HELP-FC1-NEXT:                         Set OpenMP version (e.g. 45 for OpenMP 4.5, 50 for OpenMP 5.0). Default value is 50 for Clang and 11 for Flang
+! HELP-FC1-NEXT:                         Set OpenMP version (e.g. 45 for OpenMP 4.5, 51 for OpenMP 5.1). Default value is 51 for Clang
 ! HELP-FC1-NEXT: -fopenmp                Parse OpenMP pragmas and generate parallel code.
 ! HELP-FC1-NEXT: -fpass-plugin=<dsopath> Load pass plugin from a dynamic shared object file (only with new pass manager).
 ! HELP-FC1-NEXT: -fppc-native-vector-element-order

openmp/docs/CommandLineArgumentReference.rst

@@ -37,8 +37,7 @@ Use the static OpenMP host runtime while linking.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 Set the OpenMP version to a specific version ``<arg>`` of the OpenMP standard. 
 For example, you may use ``-fopenmp-version=45`` to select version 4.5 of 
-the OpenMP standard. The default value is ``-fopenmp-version=50`` for ``Clang`` 
-and ``-fopenmp-version=11`` for ``flang-new``.
+the OpenMP standard. The default value is ``-fopenmp-version=51`` for ``Clang``.
 
 .. _offload_command_line_arguments: