[flang][Semantics] Add LangOptions to SemanticsContext (#110013)

The motivation for this is to make OpenMP settings visible in the
semantic checks (OpenMP version in particular).

Author: kparzysz

Diff for: flang/include/flang/Semantics/semantics.h

@@ -12,6 +12,7 @@
 #include "scope.h"
 #include "symbol.h"
 #include "flang/Common/Fortran-features.h"
+#include "flang/Common/LangOptions.h"
 #include "flang/Evaluate/common.h"
 #include "flang/Evaluate/intrinsics.h"
 #include "flang/Evaluate/target.h"
@@ -65,15 +66,17 @@ using ConstructStack = std::vector<ConstructNode>;
 class SemanticsContext {
 public:
   SemanticsContext(const common::IntrinsicTypeDefaultKinds &,
-      const common::LanguageFeatureControl &, parser::AllCookedSources &);
+      const common::LanguageFeatureControl &, const common::LangOptions &,
+      parser::AllCookedSources &);
   ~SemanticsContext();
 
   const common::IntrinsicTypeDefaultKinds &defaultKinds() const {
     return defaultKinds_;
   }
   const common::LanguageFeatureControl &languageFeatures() const {
     return languageFeatures_;
-  };
+  }
+  const common::LangOptions &langOptions() const { return langOpts_; }
   int GetDefaultKind(TypeCategory) const;
   int doublePrecisionKind() const {
     return defaultKinds_.doublePrecisionKind();
@@ -273,6 +276,7 @@ class SemanticsContext {
 
   const common::IntrinsicTypeDefaultKinds &defaultKinds_;
   const common::LanguageFeatureControl &languageFeatures_;
+  const common::LangOptions &langOpts_;
   parser::AllCookedSources &allCookedSources_;
   std::optional<parser::CharBlock> location_;
   std::vector<std::string> searchDirectories_;

Diff for: flang/lib/Frontend/CompilerInvocation.cpp

@@ -1531,7 +1531,8 @@ CompilerInvocation::getSemanticsCtx(
   auto &fortranOptions = getFortranOpts();
 
   auto semanticsContext = std::make_unique<semantics::SemanticsContext>(
-      getDefaultKinds(), fortranOptions.features, allCookedSources);
+      getDefaultKinds(), fortranOptions.features, getLangOpts(),
+      allCookedSources);
 
   semanticsContext->set_moduleDirectory(getModuleDir())
       .set_searchDirectories(fortranOptions.searchDirectories)

Diff for: flang/lib/Semantics/semantics.cpp

@@ -348,9 +348,10 @@ class CommonBlockMap {
 SemanticsContext::SemanticsContext(
     const common::IntrinsicTypeDefaultKinds &defaultKinds,
     const common::LanguageFeatureControl &languageFeatures,
+    const common::LangOptions &langOpts,
     parser::AllCookedSources &allCookedSources)
     : defaultKinds_{defaultKinds}, languageFeatures_{languageFeatures},
-      allCookedSources_{allCookedSources},
+      langOpts_{langOpts}, allCookedSources_{allCookedSources},
       intrinsics_{evaluate::IntrinsicProcTable::Configure(defaultKinds_)},
       globalScope_{*this}, intrinsicModulesScope_{globalScope_.MakeScope(
                                Scope::Kind::IntrinsicModules, nullptr)},

Diff for: flang/tools/bbc/bbc.cpp

@@ -15,6 +15,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "flang/Common/Fortran-features.h"
+#include "flang/Common/LangOptions.h"
 #include "flang/Common/OpenMP-features.h"
 #include "flang/Common/Version.h"
 #include "flang/Common/default-kinds.h"
@@ -508,6 +509,21 @@ int main(int argc, char **argv) {
   options.predefinitions.emplace_back(
       "__flang_patchlevel__"s, std::string{FLANG_VERSION_PATCHLEVEL_STRING});
 
+  Fortran::common::LangOptions langOpts;
+  langOpts.NoGPULib = setNoGPULib;
+  langOpts.OpenMPVersion = setOpenMPVersion;
+  langOpts.OpenMPIsTargetDevice = enableOpenMPDevice;
+  langOpts.OpenMPIsGPU = enableOpenMPGPU;
+  langOpts.OpenMPForceUSM = enableOpenMPForceUSM;
+  langOpts.OpenMPTargetDebug = setOpenMPTargetDebug;
+  langOpts.OpenMPThreadSubscription = setOpenMPThreadSubscription;
+  langOpts.OpenMPTeamSubscription = setOpenMPTeamSubscription;
+  langOpts.OpenMPNoThreadState = setOpenMPNoThreadState;
+  langOpts.OpenMPNoNestedParallelism = setOpenMPNoNestedParallelism;
+  std::transform(targetTriplesOpenMP.begin(), targetTriplesOpenMP.end(),
+                 std::back_inserter(langOpts.OMPTargetTriples),
+                 [](const std::string &str) { return llvm::Triple(str); });
+
   // enable parsing of OpenMP
   if (enableOpenMP) {
     options.features.Enable(Fortran::common::LanguageFeature::OpenMP);
@@ -539,7 +555,7 @@ int main(int argc, char **argv) {
   Fortran::parser::AllSources allSources;
   Fortran::parser::AllCookedSources allCookedSources(allSources);
   Fortran::semantics::SemanticsContext semanticsContext{
-      defaultKinds, options.features, allCookedSources};
+      defaultKinds, options.features, langOpts, allCookedSources};
   semanticsContext.set_moduleDirectory(moduleDir)
       .set_moduleFileSuffix(moduleSuffix)
       .set_searchDirectories(includeDirs)