[flang][driver] Increase default -fopenmp-version to 52 (#170)

* [flang][driver] Increase default -fopenmp-version to 52

    - Currently set to 11

* Fix lit tests & update version in Frontend/CompilerInvocation.cpp

* Fix one more test flang/test/Driver/flang-openmp-version-macro.f90

Author: dpalermo

flang/include/flang/Tools/CrossToolHelpers.h

@@ -164,7 +164,7 @@ struct OffloadModuleOpts {
   bool OpenMPIsTargetDevice = false;
   bool OpenMPIsGPU = false;
   bool OpenMPForceUSM = false;
-  uint32_t OpenMPVersion = 11;
+  uint32_t OpenMPVersion = 52;
   std::string OMPHostIRFile = {};
   std::vector<llvm::Triple> OMPTargetTriples = {};
   bool NoGPULib = false;

flang/lib/Frontend/CompilerInvocation.cpp

@@ -1015,8 +1015,8 @@ static bool parseOpenMPArgs(CompilerInvocation &res, llvm::opt::ArgList &args,
   unsigned numErrorsBefore = diags.getNumErrors();
   llvm::Triple t(res.getTargetOpts().triple);
 
-  // By default OpenMP is set to 1.1 version
-  res.getLangOpts().OpenMPVersion = 11;
+  // By default OpenMP is set to 5.2 version
+  res.getLangOpts().OpenMPVersion = 52;
   res.getFrontendOpts().features.Enable(
       Fortran::common::LanguageFeature::OpenMP);
   if (int Version = getLastArgIntValue(

flang/test/Driver/bbc-openmp-version-macro.f90

@@ -13,7 +13,7 @@
 ! RUN: bbc -fopenmp -fopenmp-version=51 -o - %s | FileCheck %s --check-prefix=OPENMP-VERSION-51
 ! RUN: bbc -fopenmp -fopenmp-version=52 -o - %s | FileCheck %s --check-prefix=OPENMP-VERSION-52
 
-! DEFAULT-OPENMP-VERSION: {{.*}} = arith.constant 199911 : i32
+! DEFAULT-OPENMP-VERSION: {{.*}} = arith.constant 202111 : i32
 ! OPENMP-VERSION-11: {{.*}} = arith.constant 199911 : i32
 ! OPENMP-VERSION-20: {{.*}} = arith.constant 200011 : i32
 ! OPENMP-VERSION-25: {{.*}} = arith.constant 200505 : i32

flang/test/Driver/flang-openmp-version-macro.f90

@@ -13,7 +13,7 @@
 ! RUN: %flang_fc1 -fopenmp -fopenmp-version=51 -cpp -E %s | FileCheck %s --check-prefix=OPENMP-VERSION-51
 ! RUN: %flang_fc1 -fopenmp -fopenmp-version=52 -cpp -E %s | FileCheck %s --check-prefix=OPENMP-VERSION-52
 
-! DEFAULT-OPENMP-VERSION: integer :: var1 = 199911
+! DEFAULT-OPENMP-VERSION: integer :: var1 = 202111
 ! OPENMP-VERSION-11: integer :: var1 = 199911
 ! OPENMP-VERSION-20: integer :: var1 = 200011
 ! OPENMP-VERSION-25: integer :: var1 = 200505

flang/test/Lower/OpenMP/rtl-flags.f90

@@ -20,20 +20,20 @@
 !RUN: bbc -emit-hlfir -fopenmp -fopenmp-assume-no-nested-parallelism -fopenmp-is-target-device -o - %s | FileCheck %s --check-prefix=NEST-PAR-DEVICE-FIR
 !RUN: bbc -emit-hlfir -fopenmp -fopenmp-target-debug=1 -fopenmp-assume-teams-oversubscription -fopenmp-assume-no-nested-parallelism -fopenmp-assume-threads-oversubscription -fopenmp-assume-no-thread-state -fopenmp-is-target-device -o - %s | FileCheck %s --check-prefix=ALL-DEVICE-FIR
 
-!DEFAULT-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<openmp_device_version = 11>
+!DEFAULT-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<openmp_device_version = 52>
 !DEFAULT-DEVICE-FIR-SAME: omp.is_target_device = true
 !DEFAULT-DEVICE-FIR-VERSION: module attributes {{{.*}}omp.flags = #omp.flags<openmp_device_version = 45>
 !DEFAULT-DEVICE-FIR-VERSION-SAME: omp.is_target_device = true
 !DEFAULT-DEVICE-FIR-VERSION-SAME: omp.version = #omp.version<version = 45>
 !DEFAULT-HOST-FIR: module attributes {{{.*}}omp.is_target_device = false{{.*}}
 !DEFAULT-HOST-FIR-VERSION: module attributes {{{.*}}omp.is_target_device = false
 !DEFAULT-HOST-FIR-VERSION-SAME: omp.version = #omp.version<version = 45>
-!DBG-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<debug_kind = 1, openmp_device_version = 11>
-!DBG-EQ-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<debug_kind = 111, openmp_device_version = 11>
-!TEAMS-OSUB-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_teams_oversubscription = true, openmp_device_version = 11>
-!THREAD-OSUB-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_threads_oversubscription = true, openmp_device_version = 11>
-!THREAD-STATE-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_no_thread_state = true, openmp_device_version = 11>
-!NEST-PAR-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_no_nested_parallelism = true, openmp_device_version = 11>
-!ALL-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<debug_kind = 1, assume_teams_oversubscription = true, assume_threads_oversubscription = true, assume_no_thread_state = true, assume_no_nested_parallelism = true, openmp_device_version = 11>
+!DBG-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<debug_kind = 1, openmp_device_version = 52>
+!DBG-EQ-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<debug_kind = 111, openmp_device_version = 52>
+!TEAMS-OSUB-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_teams_oversubscription = true, openmp_device_version = 52>
+!THREAD-OSUB-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_threads_oversubscription = true, openmp_device_version = 52>
+!THREAD-STATE-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_no_thread_state = true, openmp_device_version = 52>
+!NEST-PAR-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<assume_no_nested_parallelism = true, openmp_device_version = 52>
+!ALL-DEVICE-FIR: module attributes {{{.*}}omp.flags = #omp.flags<debug_kind = 1, assume_teams_oversubscription = true, assume_threads_oversubscription = true, assume_no_thread_state = true, assume_no_nested_parallelism = true, openmp_device_version = 52>
 subroutine omp_subroutine()
 end subroutine omp_subroutine

flang/tools/bbc/bbc.cpp

@@ -167,7 +167,7 @@ static llvm::cl::list<std::string> targetTriplesOpenMP(
 static llvm::cl::opt<uint32_t>
     setOpenMPVersion("fopenmp-version",
                      llvm::cl::desc("OpenMP standard version"),
-                     llvm::cl::init(11));
+                     llvm::cl::init(52));
 
 static llvm::cl::opt<uint32_t> setOpenMPTargetDebug(
     "fopenmp-target-debug",