https://github.com/kparzysz updated 
https://github.com/llvm/llvm-project/pull/160573

>From 525f12fa0da6c22dded6c19e2338b6bcc3c2da6f Mon Sep 17 00:00:00 2001
From: Krzysztof Parzyszek <krzysztof.parzys...@amd.com>
Date: Wed, 24 Sep 2025 07:59:16 -0500
Subject: [PATCH 1/2] [flang][OpenMP] Use OmpDirectiveSpecification in
 DECLARE_TARGET

---
 flang/include/flang/Parser/openmp-utils.h     |   2 -
 flang/include/flang/Parser/parse-tree.h       |  10 +-
 flang/lib/Lower/OpenMP/OpenMP.cpp             |  14 +-
 flang/lib/Parser/openmp-parsers.cpp           |  18 +-
 flang/lib/Parser/unparse.cpp                  |   4 +-
 flang/lib/Semantics/check-omp-structure.cpp   | 245 +++++++++---------
 flang/lib/Semantics/check-omp-structure.h     |   3 -
 flang/lib/Semantics/resolve-directives.cpp    |  27 +-
 flang/lib/Semantics/resolve-names.cpp         |  77 +++---
 .../OpenMP/declare-target-indirect-tree.f90   |  28 +-
 .../OpenMP/declare-target-to-clause.f90       |  14 +-
 .../OpenMP/declare_target-device_type.f90     | 108 ++++++--
 .../Parser/OpenMP/enter-automap-modifier.f90  |  11 +-
 .../OpenMP/openmp6-directive-spellings.f90    |   9 +-
 .../Semantics/OpenMP/blank-common-block.f90   |   1 +
 ...lare-target-function-name-with-symbols.f90 |   2 +-
 16 files changed, 319 insertions(+), 254 deletions(-)

diff --git a/flang/include/flang/Parser/openmp-utils.h 
b/flang/include/flang/Parser/openmp-utils.h
index 4b8fe6a5b49f0..bf54f970a7d3a 100644
--- a/flang/include/flang/Parser/openmp-utils.h
+++ b/flang/include/flang/Parser/openmp-utils.h
@@ -41,7 +41,6 @@ struct ConstructId {
 MAKE_CONSTR_ID(OpenMPDeclarativeAllocate, D::OMPD_allocate);
 MAKE_CONSTR_ID(OpenMPDeclarativeAssumes, D::OMPD_assumes);
 MAKE_CONSTR_ID(OpenMPDeclareReductionConstruct, D::OMPD_declare_reduction);
-MAKE_CONSTR_ID(OpenMPDeclareTargetConstruct, D::OMPD_declare_target);
 MAKE_CONSTR_ID(OpenMPExecutableAllocate, D::OMPD_allocate);
 MAKE_CONSTR_ID(OpenMPRequiresConstruct, D::OMPD_requires);
 
@@ -97,7 +96,6 @@ struct DirectiveNameScope {
       } else if constexpr (std::is_same_v<T, OpenMPDeclarativeAllocate> ||
           std::is_same_v<T, OpenMPDeclarativeAssumes> ||
           std::is_same_v<T, OpenMPDeclareReductionConstruct> ||
-          std::is_same_v<T, OpenMPDeclareTargetConstruct> ||
           std::is_same_v<T, OpenMPExecutableAllocate> ||
           std::is_same_v<T, OpenMPRequiresConstruct>) {
         return MakeName(std::get<Verbatim>(x.t).source, ConstructId<T>::id);
diff --git a/flang/include/flang/Parser/parse-tree.h 
b/flang/include/flang/Parser/parse-tree.h
index be30a95763208..e7593d9875097 100644
--- a/flang/include/flang/Parser/parse-tree.h
+++ b/flang/include/flang/Parser/parse-tree.h
@@ -4961,10 +4961,16 @@ struct OmpDeclareTargetSpecifier {
   std::variant<OmpDeclareTargetWithList, OmpDeclareTargetWithClause> u;
 };
 
+// Ref: [4.5:110-113], [5.0:180-185], [5.1:210-216], [5.2:206-207],
+//      [6.0:346-348]
+//
+// declare-target-directive ->                      // since 4.5
+//    DECLARE_TARGET[(extended-list)] |
+//    DECLARE_TARGET clause-list
 struct OpenMPDeclareTargetConstruct {
-  TUPLE_CLASS_BOILERPLATE(OpenMPDeclareTargetConstruct);
+  WRAPPER_CLASS_BOILERPLATE(
+      OpenMPDeclareTargetConstruct, OmpDirectiveSpecification);
   CharBlock source;
-  std::tuple<Verbatim, OmpDeclareTargetSpecifier> t;
 };
 
 // OMP v5.2: 5.8.8
diff --git a/flang/lib/Lower/OpenMP/OpenMP.cpp 
b/flang/lib/Lower/OpenMP/OpenMP.cpp
index d2e865b3e1d0c..1cb3335abbd06 100644
--- a/flang/lib/Lower/OpenMP/OpenMP.cpp
+++ b/flang/lib/Lower/OpenMP/OpenMP.cpp
@@ -761,19 +761,17 @@ static void promoteNonCPtrUseDevicePtrArgsToUseDeviceAddr(
 static void getDeclareTargetInfo(
     lower::AbstractConverter &converter, semantics::SemanticsContext &semaCtx,
     lower::pft::Evaluation &eval,
-    const parser::OpenMPDeclareTargetConstruct &declareTargetConstruct,
+    const parser::OpenMPDeclareTargetConstruct &construct,
     mlir::omp::DeclareTargetOperands &clauseOps,
     llvm::SmallVectorImpl<DeclareTargetCaptureInfo> &symbolAndClause) {
-  const auto &spec =
-      std::get<parser::OmpDeclareTargetSpecifier>(declareTargetConstruct.t);
-  if (const auto *objectList{parser::Unwrap<parser::OmpObjectList>(spec.u)}) {
-    ObjectList objects{makeObjects(*objectList, semaCtx)};
+
+  if (!construct.v.Arguments().v.empty()) {
+    ObjectList objects{makeObjects(construct.v.Arguments(), semaCtx)};
     // Case: declare target(func, var1, var2)
     gatherFuncAndVarSyms(objects, mlir::omp::DeclareTargetCaptureClause::to,
                          symbolAndClause, /*automap=*/false);
-  } else if (const auto *clauseList{
-                 parser::Unwrap<parser::OmpClauseList>(spec.u)}) {
-    List<Clause> clauses = makeClauses(*clauseList, semaCtx);
+  } else {
+    List<Clause> clauses = makeClauses(construct.v.Clauses(), semaCtx);
     if (clauses.empty()) {
       Fortran::lower::pft::FunctionLikeUnit *owningProc =
           eval.getOwningProcedure();
diff --git a/flang/lib/Parser/openmp-parsers.cpp 
b/flang/lib/Parser/openmp-parsers.cpp
index 0085576292ff5..bd080386c0aea 100644
--- a/flang/lib/Parser/openmp-parsers.cpp
+++ b/flang/lib/Parser/openmp-parsers.cpp
@@ -1773,23 +1773,11 @@ 
TYPE_PARSER(sourced(construct<OpenMPDeclareReductionConstruct>(
         IsDirective(llvm::omp::Directive::OMPD_declare_reduction)) >=
     Parser<OmpDirectiveSpecification>{})))
 
-// declare-target with list
-TYPE_PARSER(sourced(construct<OmpDeclareTargetWithList>(
-    parenthesized(Parser<OmpObjectList>{}))))
-
-// declare-target with clause
-TYPE_PARSER(
-    sourced(construct<OmpDeclareTargetWithClause>(Parser<OmpClauseList>{})))
-
-// declare-target-specifier
-TYPE_PARSER(
-    construct<OmpDeclareTargetSpecifier>(Parser<OmpDeclareTargetWithList>{}) ||
-    construct<OmpDeclareTargetSpecifier>(Parser<OmpDeclareTargetWithClause>{}))
-
 // 2.10.6 Declare Target Construct
 TYPE_PARSER(sourced(construct<OpenMPDeclareTargetConstruct>(
-    verbatim("DECLARE TARGET"_tok) || verbatim("DECLARE_TARGET"_tok),
-    Parser<OmpDeclareTargetSpecifier>{})))
+    predicated(Parser<OmpDirectiveName>{},
+        IsDirective(llvm::omp::Directive::OMPD_declare_target)) >=
+    Parser<OmpDirectiveSpecification>{})))
 
 static OmpMapperSpecifier ConstructOmpMapperSpecifier(
     std::optional<Name> &&mapperName, TypeSpec &&typeSpec, Name &&varName) {
diff --git a/flang/lib/Parser/unparse.cpp b/flang/lib/Parser/unparse.cpp
index c9774dd137d2b..be166bcb743ba 100644
--- a/flang/lib/Parser/unparse.cpp
+++ b/flang/lib/Parser/unparse.cpp
@@ -2582,8 +2582,8 @@ class UnparseVisitor {
   }
   void Unparse(const OpenMPDeclareTargetConstruct &x) {
     BeginOpenMP();
-    Word("!$OMP DECLARE TARGET ");
-    Walk(std::get<parser::OmpDeclareTargetSpecifier>(x.t));
+    Word("!$OMP ");
+    Walk(x.v);
     Put("\n");
     EndOpenMP();
   }
diff --git a/flang/lib/Semantics/check-omp-structure.cpp 
b/flang/lib/Semantics/check-omp-structure.cpp
index cf89d305e3cb2..05ff541657b1a 100644
--- a/flang/lib/Semantics/check-omp-structure.cpp
+++ b/flang/lib/Semantics/check-omp-structure.cpp
@@ -624,11 +624,6 @@ template <typename Checker> struct 
DirectiveSpellingVisitor {
     checker_(std::get<parser::Verbatim>(x.t).source, Directive::OMPD_assumes);
     return false;
   }
-  bool Pre(const parser::OpenMPDeclareTargetConstruct &x) {
-    checker_(
-        std::get<parser::Verbatim>(x.t).source, 
Directive::OMPD_declare_target);
-    return false;
-  }
   bool Pre(const parser::OpenMPGroupprivate &x) {
     checker_(x.v.DirName().source, Directive::OMPD_groupprivate);
     return false;
@@ -1615,38 +1610,6 @@ void OmpStructureChecker::Enter(const 
parser::OmpClause::Allocate &x) {
   }
 }
 
-void OmpStructureChecker::Enter(const parser::OmpDeclareTargetWithClause &x) {
-  SetClauseSets(llvm::omp::Directive::OMPD_declare_target);
-}
-
-void OmpStructureChecker::Leave(const parser::OmpDeclareTargetWithClause &x) {
-  if (x.v.v.size() > 0) {
-    const parser::OmpClause *enterClause =
-        FindClause(llvm::omp::Clause::OMPC_enter);
-    const parser::OmpClause *toClause = FindClause(llvm::omp::Clause::OMPC_to);
-    const parser::OmpClause *linkClause =
-        FindClause(llvm::omp::Clause::OMPC_link);
-    const parser::OmpClause *indirectClause =
-        FindClause(llvm::omp::Clause::OMPC_indirect);
-    if (!enterClause && !toClause && !linkClause) {
-      context_.Say(x.source,
-          "If the DECLARE TARGET directive has a clause, it must contain at 
least one ENTER clause or LINK clause"_err_en_US);
-    }
-    if (indirectClause && !enterClause) {
-      context_.Say(x.source,
-          "The INDIRECT clause cannot be used without the ENTER clause with 
the DECLARE TARGET directive."_err_en_US);
-    }
-    unsigned version{context_.langOptions().OpenMPVersion};
-    if (toClause && version >= 52) {
-      context_.Warn(common::UsageWarning::OpenMPUsage, toClause->source,
-          "The usage of TO clause on DECLARE TARGET directive has been 
deprecated. Use ENTER clause instead."_warn_en_US);
-    }
-    if (indirectClause) {
-      CheckAllowedClause(llvm::omp::Clause::OMPC_indirect);
-    }
-  }
-}
-
 void OmpStructureChecker::Enter(const parser::OpenMPDeclareMapperConstruct &x) 
{
   const parser::OmpDirectiveName &dirName{x.v.DirName()};
   PushContextAndClauseSets(dirName.source, dirName.v);
@@ -1698,42 +1661,6 @@ void OmpStructureChecker::Leave(
   dirContext_.pop_back();
 }
 
-void OmpStructureChecker::Enter(const parser::OpenMPDeclareTargetConstruct &x) 
{
-  const auto &dir{std::get<parser::Verbatim>(x.t)};
-  PushContext(dir.source, llvm::omp::Directive::OMPD_declare_target);
-}
-
-void OmpStructureChecker::Enter(const parser::OmpDeclareTargetWithList &x) {
-  SymbolSourceMap symbols;
-  GetSymbolsInObjectList(x.v, symbols);
-  for (auto &[symbol, source] : symbols) {
-    const GenericDetails *genericDetails = symbol->detailsIf<GenericDetails>();
-    if (genericDetails) {
-      context_.Say(source,
-          "The procedure '%s' in DECLARE TARGET construct cannot be a generic 
name."_err_en_US,
-          symbol->name());
-      genericDetails->specific();
-    }
-    if (IsProcedurePointer(*symbol)) {
-      context_.Say(source,
-          "The procedure '%s' in DECLARE TARGET construct cannot be a 
procedure pointer."_err_en_US,
-          symbol->name());
-    }
-    const SubprogramDetails *entryDetails =
-        symbol->detailsIf<SubprogramDetails>();
-    if (entryDetails && entryDetails->entryScope()) {
-      context_.Say(source,
-          "The procedure '%s' in DECLARE TARGET construct cannot be an entry 
name."_err_en_US,
-          symbol->name());
-    }
-    if (IsStmtFunction(*symbol)) {
-      context_.Say(source,
-          "The procedure '%s' in DECLARE TARGET construct cannot be a 
statement function."_err_en_US,
-          symbol->name());
-    }
-  }
-}
-
 void OmpStructureChecker::CheckSymbolName(
     const parser::CharBlock &source, const parser::OmpObject &object) {
   common::visit(
@@ -1766,62 +1693,138 @@ void OmpStructureChecker::CheckSymbolNames(
   }
 }
 
+void OmpStructureChecker::Enter(const parser::OpenMPDeclareTargetConstruct &x) 
{
+  const parser::OmpDirectiveName &dirName{x.v.DirName()};
+  PushContext(dirName.source, dirName.v);
+
+  // Check if arguments are extended-list-items.
+  for (const parser::OmpArgument &arg : x.v.Arguments().v) {
+    const Symbol *symbol{GetArgumentSymbol(arg)};
+    if (!symbol) {
+      context_.Say(arg.source,
+          "An argument to the DECLARE TARGET directive should be an 
extended-list-item"_err_en_US);
+      continue;
+    }
+    const GenericDetails *genericDetails = symbol->detailsIf<GenericDetails>();
+    if (genericDetails) {
+      context_.Say(arg.source,
+          "The procedure '%s' in DECLARE TARGET construct cannot be a generic 
name."_err_en_US,
+          symbol->name());
+      genericDetails->specific();
+    }
+    if (IsProcedurePointer(*symbol)) {
+      context_.Say(arg.source,
+          "The procedure '%s' in DECLARE TARGET construct cannot be a 
procedure pointer."_err_en_US,
+          symbol->name());
+    }
+    const SubprogramDetails *entryDetails =
+        symbol->detailsIf<SubprogramDetails>();
+    if (entryDetails && entryDetails->entryScope()) {
+      context_.Say(arg.source,
+          "The procedure '%s' in DECLARE TARGET construct cannot be an entry 
name."_err_en_US,
+          symbol->name());
+    }
+    if (IsStmtFunction(*symbol)) {
+      context_.Say(arg.source,
+          "The procedure '%s' in DECLARE TARGET construct cannot be a 
statement function."_err_en_US,
+          symbol->name());
+    }
+  }
+
+  // Check if there are arguments or clauses, but not both.
+  if (!x.v.Clauses().v.empty()) {
+    if (!x.v.Arguments().v.empty()) {
+      context_.Say(x.source,
+          "DECLARE TARGET directive can have argument or clauses, but not 
both"_err_en_US);
+    }
+    SetClauseSets(llvm::omp::Directive::OMPD_declare_target);
+  }
+}
+
 void OmpStructureChecker::Leave(const parser::OpenMPDeclareTargetConstruct &x) 
{
-  const auto &dir{std::get<parser::Verbatim>(x.t)};
-  const auto &spec{std::get<parser::OmpDeclareTargetSpecifier>(x.t)};
+  const parser::OmpDirectiveName &dirName{x.v.DirName()};
+
   // Handle both forms of DECLARE TARGET.
   // - Extended list: It behaves as if there was an ENTER/TO clause with the
   //   list of objects as argument. It accepts no explicit clauses.
   // - With clauses.
-  if (const auto *objectList{parser::Unwrap<parser::OmpObjectList>(spec.u)}) {
-    deviceConstructFound_ = true;
-    CheckSymbolNames(dir.source, *objectList);
-    CheckVarIsNotPartOfAnotherVar(dir.source, *objectList);
-    CheckThreadprivateOrDeclareTargetVar(*objectList);
-  } else if (const auto *clauseList{
-                 parser::Unwrap<parser::OmpClauseList>(spec.u)}) {
-    bool toClauseFound{false}, deviceTypeClauseFound{false},
-        enterClauseFound{false};
-    for (const auto &clause : clauseList->v) {
-      common::visit(
-          common::visitors{
-              [&](const parser::OmpClause::To &toClause) {
-                toClauseFound = true;
-                auto &objList{std::get<parser::OmpObjectList>(toClause.v.t)};
-                CheckSymbolNames(dir.source, objList);
-                CheckVarIsNotPartOfAnotherVar(dir.source, objList);
-                CheckThreadprivateOrDeclareTargetVar(objList);
-              },
-              [&](const parser::OmpClause::Link &linkClause) {
-                CheckSymbolNames(dir.source, linkClause.v);
-                CheckVarIsNotPartOfAnotherVar(dir.source, linkClause.v);
-                CheckThreadprivateOrDeclareTargetVar(linkClause.v);
-              },
-              [&](const parser::OmpClause::Enter &enterClause) {
-                enterClauseFound = true;
-                auto 
&objList{std::get<parser::OmpObjectList>(enterClause.v.t)};
-                CheckSymbolNames(dir.source, objList);
-                CheckVarIsNotPartOfAnotherVar(dir.source, objList);
-                CheckThreadprivateOrDeclareTargetVar(objList);
-              },
-              [&](const parser::OmpClause::DeviceType &deviceTypeClause) {
-                deviceTypeClauseFound = true;
-                if (deviceTypeClause.v.v !=
-                    parser::OmpDeviceTypeClause::DeviceTypeDescription::Host) {
-                  // Function / subroutine explicitly marked as runnable by the
-                  // target device.
-                  deviceConstructFound_ = true;
-                }
-              },
-              [&](const auto &) {},
-          },
-          clause.u);
+  for (const parser::OmpArgument &arg : x.v.Arguments().v) {
+    if (auto *object{GetArgumentObject(arg)}) {
+      deviceConstructFound_ = true;
+      CheckSymbolName(dirName.source, *object);
+      CheckVarIsNotPartOfAnotherVar(dirName.source, *object);
+      CheckThreadprivateOrDeclareTargetVar(*object);
+    }
+  }
 
-      if ((toClauseFound || enterClauseFound) && !deviceTypeClauseFound) {
-        deviceConstructFound_ = true;
-      }
+  if (!x.v.Clauses().v.empty()) {
+    const parser::OmpClause *enterClause =
+        FindClause(llvm::omp::Clause::OMPC_enter);
+    const parser::OmpClause *toClause = FindClause(llvm::omp::Clause::OMPC_to);
+    const parser::OmpClause *linkClause =
+        FindClause(llvm::omp::Clause::OMPC_link);
+    const parser::OmpClause *indirectClause =
+        FindClause(llvm::omp::Clause::OMPC_indirect);
+    if (!enterClause && !toClause && !linkClause) {
+      context_.Say(x.source,
+          "If the DECLARE TARGET directive has a clause, it must contain at 
least one ENTER clause or LINK clause"_err_en_US);
+    }
+    if (indirectClause && !enterClause) {
+      context_.Say(x.source,
+          "The INDIRECT clause cannot be used without the ENTER clause with 
the DECLARE TARGET directive."_err_en_US);
+    }
+    unsigned version{context_.langOptions().OpenMPVersion};
+    if (toClause && version >= 52) {
+      context_.Warn(common::UsageWarning::OpenMPUsage, toClause->source,
+          "The usage of TO clause on DECLARE TARGET directive has been 
deprecated. Use ENTER clause instead."_warn_en_US);
+    }
+    if (indirectClause) {
+      CheckAllowedClause(llvm::omp::Clause::OMPC_indirect);
     }
   }
+
+  bool toClauseFound{false}, deviceTypeClauseFound{false},
+      enterClauseFound{false};
+  for (const parser::OmpClause &clause : x.v.Clauses().v) {
+    common::visit(
+        common::visitors{
+            [&](const parser::OmpClause::To &toClause) {
+              toClauseFound = true;
+              auto &objList{std::get<parser::OmpObjectList>(toClause.v.t)};
+              CheckSymbolNames(dirName.source, objList);
+              CheckVarIsNotPartOfAnotherVar(dirName.source, objList);
+              CheckThreadprivateOrDeclareTargetVar(objList);
+            },
+            [&](const parser::OmpClause::Link &linkClause) {
+              CheckSymbolNames(dirName.source, linkClause.v);
+              CheckVarIsNotPartOfAnotherVar(dirName.source, linkClause.v);
+              CheckThreadprivateOrDeclareTargetVar(linkClause.v);
+            },
+            [&](const parser::OmpClause::Enter &enterClause) {
+              enterClauseFound = true;
+              auto &objList{std::get<parser::OmpObjectList>(enterClause.v.t)};
+              CheckSymbolNames(dirName.source, objList);
+              CheckVarIsNotPartOfAnotherVar(dirName.source, objList);
+              CheckThreadprivateOrDeclareTargetVar(objList);
+            },
+            [&](const parser::OmpClause::DeviceType &deviceTypeClause) {
+              deviceTypeClauseFound = true;
+              if (deviceTypeClause.v.v !=
+                  parser::OmpDeviceTypeClause::DeviceTypeDescription::Host) {
+                // Function / subroutine explicitly marked as runnable by the
+                // target device.
+                deviceConstructFound_ = true;
+              }
+            },
+            [&](const auto &) {},
+        },
+        clause.u);
+
+    if ((toClauseFound || enterClauseFound) && !deviceTypeClauseFound) {
+      deviceConstructFound_ = true;
+    }
+  }
+
   dirContext_.pop_back();
 }
 
diff --git a/flang/lib/Semantics/check-omp-structure.h 
b/flang/lib/Semantics/check-omp-structure.h
index 176f6568814c5..193784555a887 100644
--- a/flang/lib/Semantics/check-omp-structure.h
+++ b/flang/lib/Semantics/check-omp-structure.h
@@ -113,9 +113,6 @@ class OmpStructureChecker
   void Leave(const parser::OpenMPDeclareTargetConstruct &);
   void Enter(const parser::OpenMPDepobjConstruct &);
   void Leave(const parser::OpenMPDepobjConstruct &);
-  void Enter(const parser::OmpDeclareTargetWithList &);
-  void Enter(const parser::OmpDeclareTargetWithClause &);
-  void Leave(const parser::OmpDeclareTargetWithClause &);
   void Enter(const parser::OpenMPDispatchConstruct &);
   void Leave(const parser::OpenMPDispatchConstruct &);
   void Enter(const parser::OmpErrorDirective &);
diff --git a/flang/lib/Semantics/resolve-directives.cpp 
b/flang/lib/Semantics/resolve-directives.cpp
index 218e3e7266ca9..7ef211c8b428c 100644
--- a/flang/lib/Semantics/resolve-directives.cpp
+++ b/flang/lib/Semantics/resolve-directives.cpp
@@ -2324,22 +2324,17 @@ bool OmpAttributeVisitor::Pre(const 
parser::OpenMPCriticalConstruct &x) {
 
 bool OmpAttributeVisitor::Pre(const parser::OpenMPDeclareTargetConstruct &x) {
   PushContext(x.source, llvm::omp::Directive::OMPD_declare_target);
-  const auto &spec{std::get<parser::OmpDeclareTargetSpecifier>(x.t)};
-  if (const auto *objectList{parser::Unwrap<parser::OmpObjectList>(spec.u)}) {
-    ResolveOmpObjectList(*objectList, Symbol::Flag::OmpDeclareTarget);
-  } else if (const auto *clauseList{
-                 parser::Unwrap<parser::OmpClauseList>(spec.u)}) {
-    for (const auto &clause : clauseList->v) {
-      if (const auto *toClause{std::get_if<parser::OmpClause::To>(&clause.u)}) 
{
-        auto &objList{std::get<parser::OmpObjectList>(toClause->v.t)};
-        ResolveOmpObjectList(objList, Symbol::Flag::OmpDeclareTarget);
-      } else if (const auto *linkClause{
-                     std::get_if<parser::OmpClause::Link>(&clause.u)}) {
-        ResolveOmpObjectList(linkClause->v, Symbol::Flag::OmpDeclareTarget);
-      } else if (const auto *enterClause{
-                     std::get_if<parser::OmpClause::Enter>(&clause.u)}) {
-        ResolveOmpObjectList(std::get<parser::OmpObjectList>(enterClause->v.t),
-            Symbol::Flag::OmpDeclareTarget);
+
+  for (const parser::OmpArgument &arg : x.v.Arguments().v) {
+    if (auto *object{omp::GetArgumentObject(arg)}) {
+      ResolveOmpObject(*object, Symbol::Flag::OmpDeclareTarget);
+    }
+  }
+
+  for (const parser::OmpClause &clause : x.v.Clauses().v) {
+    if (auto *objects{parser::omp::GetOmpObjectList(clause)}) {
+      for (const parser::OmpObject &object : objects->v) {
+        ResolveOmpObject(object, Symbol::Flag::OmpDeclareTarget);
       }
     }
   }
diff --git a/flang/lib/Semantics/resolve-names.cpp 
b/flang/lib/Semantics/resolve-names.cpp
index 3a6115dae2da5..9b728d6b70deb 100644
--- a/flang/lib/Semantics/resolve-names.cpp
+++ b/flang/lib/Semantics/resolve-names.cpp
@@ -24,6 +24,7 @@
 #include "flang/Evaluate/intrinsics.h"
 #include "flang/Evaluate/tools.h"
 #include "flang/Evaluate/type.h"
+#include "flang/Parser/openmp-utils.h"
 #include "flang/Parser/parse-tree-visitor.h"
 #include "flang/Parser/parse-tree.h"
 #include "flang/Parser/tools.h"
@@ -1572,51 +1573,41 @@ class OmpVisitor : public virtual DeclarationVisitor {
   }
   void Post(const parser::OpenMPThreadprivate &) { SkipImplicitTyping(false); }
   bool Pre(const parser::OpenMPDeclareTargetConstruct &x) {
-    const auto &spec{std::get<parser::OmpDeclareTargetSpecifier>(x.t)};
-    auto populateDeclareTargetNames{[this](const parser::OmpObjectList
-                                            &objectList) {
-      for (const auto &ompObject : objectList.v) {
-        common::visit(
-            common::visitors{
-                [&](const parser::Designator &designator) {
-                  if (const auto *name{
-                          semantics::getDesignatorNameIfDataRef(designator)}) {
-                    specPartState_.declareTargetNames.insert(name->source);
-                  }
-                },
-                [&](const parser::Name &name) {
-                  specPartState_.declareTargetNames.insert(name.source);
-                },
-                [&](const parser::OmpObject::Invalid &invalid) {
-                  switch (invalid.v) {
-                    SWITCH_COVERS_ALL_CASES
-                  case parser::OmpObject::Invalid::Kind::BlankCommonBlock:
-                    context().Say(invalid.source,
-                        "Blank common blocks are not allowed as directive or 
clause arguments"_err_en_US);
-                    break;
-                  }
-                },
-            },
-            ompObject.u);
-      }
+    auto addObjectName{[&](const parser::OmpObject &object) {
+      common::visit(
+          common::visitors{
+              [&](const parser::Designator &designator) {
+                if (const auto *name{
+                        semantics::getDesignatorNameIfDataRef(designator)}) {
+                  specPartState_.declareTargetNames.insert(name->source);
+                }
+              },
+              [&](const parser::Name &name) {
+                specPartState_.declareTargetNames.insert(name.source);
+              },
+              [&](const parser::OmpObject::Invalid &invalid) {
+                switch (invalid.v) {
+                  SWITCH_COVERS_ALL_CASES
+                case parser::OmpObject::Invalid::Kind::BlankCommonBlock:
+                  context().Say(invalid.source,
+                      "Blank common blocks are not allowed as directive or 
clause arguments"_err_en_US);
+                  break;
+                }
+              },
+          },
+          object.u);
     }};
 
-    if (const auto *objectList{parser::Unwrap<parser::OmpObjectList>(spec.u)}) 
{
-      populateDeclareTargetNames(*objectList);
-    } else if (const auto *clauseList{
-                   parser::Unwrap<parser::OmpClauseList>(spec.u)}) {
-      for (const auto &clause : clauseList->v) {
-        if (const auto *toClause{
-                std::get_if<parser::OmpClause::To>(&clause.u)}) {
-          populateDeclareTargetNames(
-              std::get<parser::OmpObjectList>(toClause->v.t));
-        } else if (const auto *linkClause{
-                       std::get_if<parser::OmpClause::Link>(&clause.u)}) {
-          populateDeclareTargetNames(linkClause->v);
-        } else if (const auto *enterClause{
-                       std::get_if<parser::OmpClause::Enter>(&clause.u)}) {
-          populateDeclareTargetNames(
-              std::get<parser::OmpObjectList>(enterClause->v.t));
+    for (const parser::OmpArgument &arg : x.v.Arguments().v) {
+      if (auto *object{omp::GetArgumentObject(arg)}) {
+        addObjectName(*object);
+      }
+    }
+
+    for (const parser::OmpClause &clause : x.v.Clauses().v) {
+      if (auto *objects{parser::omp::GetOmpObjectList(clause)}) {
+        for (const parser::OmpObject &object : objects->v) {
+          addObjectName(object);
         }
       }
     }
diff --git a/flang/test/Parser/OpenMP/declare-target-indirect-tree.f90 
b/flang/test/Parser/OpenMP/declare-target-indirect-tree.f90
index 916bd66017ce0..16dc4eb44e6fd 100644
--- a/flang/test/Parser/OpenMP/declare-target-indirect-tree.f90
+++ b/flang/test/Parser/OpenMP/declare-target-indirect-tree.f90
@@ -1,5 +1,3 @@
-! REQUIRES: openmp_runtime
-
 ! RUN: %flang_fc1 %openmp_flags -fopenmp-version=52 -fdebug-dump-parse-tree %s 
| FileCheck %s
 ! RUN: %flang_fc1 %openmp_flags -fdebug-unparse -fopenmp-version=52 %s | 
FileCheck %s --check-prefix="UNPARSE"
 
@@ -15,11 +13,14 @@ function func() result(i)
 contains
   function func1() result(i)
     !$omp declare target enter(func1) indirect(.true.)
-    !CHECK: | | | | | OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause 
-> OmpClauseList -> OmpClause -> Enter -> OmpEnterClause
-    !CHECK-NEXT: | | | | | | OmpObjectList -> OmpObject -> Designator -> 
DataRef -> Name = 'func1'
-    !CHECK-NEXT: | | | | | OmpClause -> Indirect -> OmpIndirectClause -> 
Scalar -> Logical -> Expr = '.true._4'
-    !CHECK-NEXT: | | | | | | LiteralConstant -> LogicalLiteralConstant
-    !CHECK-NEXT: | | | | | | | bool = 'true'
+    !CHECK:      OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+    !CHECK-NEXT: | OmpDirectiveName -> llvm::omp::Directive = declare target
+    !CHECK-NEXT: | OmpClauseList -> OmpClause -> Enter -> OmpEnterClause
+    !CHECK-NEXT: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> 
Name = 'func1'
+    !CHECK-NEXT: | OmpClause -> Indirect -> OmpIndirectClause -> Scalar -> 
Logical -> Expr = '.true._4'
+    !CHECK-NEXT: | | LiteralConstant -> LogicalLiteralConstant
+    !CHECK-NEXT: | | | bool = 'true'
+    !CHECK-NEXT: | Flags = None
     character(1) :: i
     i = 'a'
     return
@@ -27,9 +28,12 @@ function func1() result(i)
 
   function func2() result(i)
     !$omp declare target enter(func2) indirect
-    !CHECK: | | | | | OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause 
-> OmpClauseList -> OmpClause -> Enter -> OmpEnterClause
-    !CHECK-NEXT: | | | | | | OmpObjectList -> OmpObject -> Designator -> 
DataRef -> Name = 'func2'
-    !CHECK-NEXT: | | | | | OmpClause -> Indirect -> OmpIndirectClause ->
+    !CHECK:      OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+    !CHECK-NEXT: | OmpDirectiveName -> llvm::omp::Directive = declare target
+    !CHECK-NEXT: | OmpClauseList -> OmpClause -> Enter -> OmpEnterClause
+    !CHECK-NEXT: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> 
Name = 'func2'
+    !CHECK-NEXT: | OmpClause -> Indirect -> OmpIndirectClause ->
+    !CHECK-NEXT: | Flags = None
     character(1) :: i
     i = 'b'
     return
@@ -51,5 +55,5 @@ program main
 
 end program
 
-!UNPARSE: !$OMP DECLARE TARGET  ENTER(func1) INDIRECT(.true._4)
-!UNPARSE: !$OMP DECLARE TARGET  ENTER(func2) INDIRECT()
+!UNPARSE: !$OMP DECLARE TARGET ENTER(func1) INDIRECT(.true._4)
+!UNPARSE: !$OMP DECLARE TARGET ENTER(func2) INDIRECT()
diff --git a/flang/test/Parser/OpenMP/declare-target-to-clause.f90 
b/flang/test/Parser/OpenMP/declare-target-to-clause.f90
index bcb23f821e403..8198f44bcec18 100644
--- a/flang/test/Parser/OpenMP/declare-target-to-clause.f90
+++ b/flang/test/Parser/OpenMP/declare-target-to-clause.f90
@@ -9,11 +9,13 @@ module m
 
 !UNPARSE: MODULE m
 !UNPARSE:  INTEGER x, y
-!UNPARSE: !$OMP DECLARE TARGET  TO(x,y)
+!UNPARSE: !$OMP DECLARE TARGET TO(x,y)
 !UNPARSE: END MODULE
 
-!PARSE-TREE: OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause -> 
OmpClauseList -> OmpClause -> To -> OmpToClause
-!PARSE-TREE: | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
-!PARSE-TREE: | OmpObject -> Designator -> DataRef -> Name = 'y'
-!PARSE-TREE: | bool = 'true'
-
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | OmpObject -> Designator -> DataRef -> Name = 'y'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
diff --git a/flang/test/Parser/OpenMP/declare_target-device_type.f90 
b/flang/test/Parser/OpenMP/declare_target-device_type.f90
index b6903614a628e..7df796288f4d4 100644
--- a/flang/test/Parser/OpenMP/declare_target-device_type.f90
+++ b/flang/test/Parser/OpenMP/declare_target-device_type.f90
@@ -3,35 +3,113 @@
 
 subroutine openmp_declare_target
     integer, save :: x, y
-    !CHECK: !$omp declare target device_type(host) enter(x)
+!CHECK: !$omp declare target device_type(host) enter(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Host
+!PARSE-TREE: | OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(host) enter(x)
-    !CHECK: !$omp declare target device_type(nohost) enter(x)
+
+!CHECK: !$omp declare target device_type(nohost) enter(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Nohost
+!PARSE-TREE: | OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(nohost) enter(x)
-    !CHECK: !$omp declare target device_type(any) enter(x)
+
+!CHECK: !$omp declare target device_type(any) enter(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Any
+!PARSE-TREE: | OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(any) enter(x)
 
-    !CHECK: !$omp declare target device_type(host) to(x)
+!CHECK: !$omp declare target device_type(host) to(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Host
+!PARSE-TREE: | OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(host) to(x)
-    !CHECK: !$omp declare target device_type(nohost) to(x)
+
+!CHECK: !$omp declare target device_type(nohost) to(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Nohost
+!PARSE-TREE: | OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(nohost) to(x)
-    !CHECK: !$omp declare target device_type(any) to(x)
+
+!CHECK: !$omp declare target device_type(any) to(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Any
+!PARSE-TREE: | OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(any) to(x)
 
-    !CHECK: !$omp declare target device_type(host) enter(y) to(x)
+!CHECK: !$omp declare target device_type(host) enter(y) to(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Host
+!PARSE-TREE: | OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'y'
+!PARSE-TREE: | OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(host) enter(y) to(x)
-    !CHECK: !$omp declare target device_type(nohost) enter(y) to(x)
+
+!CHECK: !$omp declare target device_type(nohost) enter(y) to(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Nohost
+!PARSE-TREE: | OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'y'
+!PARSE-TREE: | OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(nohost) enter(y) to(x)
-    !CHECK: !$omp declare target device_type(any) enter(y) to(x)
+
+!CHECK: !$omp declare target device_type(any) enter(y) to(x)
+
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause 
-> DeviceTypeDescription = Any
+!PARSE-TREE: | OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'y'
+!PARSE-TREE: | OmpClause -> To -> OmpToClause
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | | bool = 'true'
+!PARSE-TREE: | Flags = None
     !$omp declare target device_type(any) enter(y) to(x)
+
     integer :: a(1024), i
-    !CHECK: do
+!CHECK: do
     do i = 1, 1024
         a(i) = i
-    !CHECK: end do
+!CHECK: end do
     end do
 
-!PARSE-TREE: OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct
-!PARSE-TREE: OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause -> 
OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause -> 
DeviceTypeDescription = Host
-!PARSE-TREE: OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause -> 
OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause -> 
DeviceTypeDescription = Nohost
-!PARSE-TREE: OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause -> 
OmpClauseList -> OmpClause -> DeviceType -> OmpDeviceTypeClause -> 
DeviceTypeDescription = Any
 END subroutine openmp_declare_target
diff --git a/flang/test/Parser/OpenMP/enter-automap-modifier.f90 
b/flang/test/Parser/OpenMP/enter-automap-modifier.f90
index 1f361ca5c2f06..bc5b5eb3e7ef3 100644
--- a/flang/test/Parser/OpenMP/enter-automap-modifier.f90
+++ b/flang/test/Parser/OpenMP/enter-automap-modifier.f90
@@ -8,9 +8,12 @@ program automap
 
 !UNPARSE: PROGRAM AUTOMAP
 !UNPARSE:  INTEGER x
-!UNPARSE: !$OMP DECLARE TARGET  ENTER(AUTOMAP: x)
+!UNPARSE: !$OMP DECLARE_TARGET ENTER(AUTOMAP: x)
 !UNPARSE: END PROGRAM
 
-!PARSE-TREE: OmpClauseList -> OmpClause -> Enter -> OmpEnterClause
-!PARSE-TREE-NEXT: | Modifier -> OmpAutomapModifier -> Value = Automap
-!PARSE-TREE-NEXT: | OmpObjectList -> OmpObject -> Designator -> DataRef -> 
Name = 'x'
+!PARSE-TREE: DeclarationConstruct -> SpecificationConstruct -> 
OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList -> OmpClause -> Enter -> OmpEnterClause
+!PARSE-TREE: | | Modifier -> OmpAutomapModifier -> Value = Automap
+!PARSE-TREE: | | OmpObjectList -> OmpObject -> Designator -> DataRef -> Name = 
'x'
+!PARSE-TREE: | Flags = None
diff --git a/flang/test/Parser/OpenMP/openmp6-directive-spellings.f90 
b/flang/test/Parser/OpenMP/openmp6-directive-spellings.f90
index b72c5a2c1c086..f4cdd556bd4e5 100644
--- a/flang/test/Parser/OpenMP/openmp6-directive-spellings.f90
+++ b/flang/test/Parser/OpenMP/openmp6-directive-spellings.f90
@@ -124,12 +124,13 @@ subroutine f04
 end
 
 !UNPARSE: SUBROUTINE f04
-!UNPARSE: !$OMP DECLARE TARGET
+!UNPARSE: !$OMP DECLARE_TARGET
 !UNPARSE: END SUBROUTINE
 
-!PARSE-TREE: OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct
-!PARSE-TREE: | Verbatim
-!PARSE-TREE: | OmpDeclareTargetSpecifier -> OmpDeclareTargetWithClause -> 
OmpClauseList ->
+!PARSE-TREE: OpenMPDeclarativeConstruct -> OpenMPDeclareTargetConstruct -> 
OmpDirectiveSpecification
+!PARSE-TREE: | OmpDirectiveName -> llvm::omp::Directive = declare target
+!PARSE-TREE: | OmpClauseList ->
+!PARSE-TREE: | Flags = None
 
 subroutine f05
   implicit none
diff --git a/flang/test/Semantics/OpenMP/blank-common-block.f90 
b/flang/test/Semantics/OpenMP/blank-common-block.f90
index 4a217fced0ff7..e410f0c56d1c0 100644
--- a/flang/test/Semantics/OpenMP/blank-common-block.f90
+++ b/flang/test/Semantics/OpenMP/blank-common-block.f90
@@ -4,6 +4,7 @@ module m
   integer :: a
   common // a
   !ERROR: Blank common blocks are not allowed as directive or clause arguments
+  !ERROR: An argument to the DECLARE TARGET directive should be an 
extended-list-item
   !$omp declare_target(//)
   !ERROR: Blank common blocks are not allowed as directive or clause arguments
   !$omp threadprivate(//)
diff --git 
a/flang/test/Semantics/OpenMP/declare-target-function-name-with-symbols.f90 
b/flang/test/Semantics/OpenMP/declare-target-function-name-with-symbols.f90
index 9a0acdb3dd100..3439e6fd13981 100644
--- a/flang/test/Semantics/OpenMP/declare-target-function-name-with-symbols.f90
+++ b/flang/test/Semantics/OpenMP/declare-target-function-name-with-symbols.f90
@@ -19,7 +19,7 @@ end module test
 !CHECK:  !DEF: /test/ex/b ObjectEntity INTEGER(4)
 !CHECK:  !DEF: /test/ex/c ObjectEntity INTEGER(4)
 !CHECK:  function ex(a, b, c)
-!CHECK: !$omp declare target (ex)
+!CHECK: !$omp declare target(ex)
 !CHECK:   !REF: /test/ex/a
 !CHECK:   !REF: /test/ex/b
 !CHECK:   !REF: /test/ex/c

>From 0f8c8248ca815c1de700e93d7df1d753c10d215e Mon Sep 17 00:00:00 2001
From: Krzysztof Parzyszek <krzysztof.parzys...@amd.com>
Date: Wed, 24 Sep 2025 12:58:20 -0500
Subject: [PATCH 2/2] Remove unused AST classes

---
 flang/include/flang/Parser/dump-parse-tree.h |  3 ---
 flang/include/flang/Parser/parse-tree.h      | 18 ------------------
 flang/lib/Parser/unparse.cpp                 |  3 ---
 3 files changed, 24 deletions(-)

diff --git a/flang/include/flang/Parser/dump-parse-tree.h 
b/flang/include/flang/Parser/dump-parse-tree.h
index 7540d38baa584..fadca0a3876f4 100644
--- a/flang/include/flang/Parser/dump-parse-tree.h
+++ b/flang/include/flang/Parser/dump-parse-tree.h
@@ -538,9 +538,6 @@ class ParseTreeDumper {
   NODE_ENUM(OmpCloseModifier, Value)
   NODE(parser, OmpContainsClause)
   NODE(parser, OmpContextSelectorSpecification)
-  NODE(parser, OmpDeclareTargetSpecifier)
-  NODE(parser, OmpDeclareTargetWithClause)
-  NODE(parser, OmpDeclareTargetWithList)
   NODE(parser, OmpDeclareVariantDirective)
   NODE(parser, OmpDefaultClause)
   NODE_ENUM(OmpDefaultClause, DataSharingAttribute)
diff --git a/flang/include/flang/Parser/parse-tree.h 
b/flang/include/flang/Parser/parse-tree.h
index e7593d9875097..486be8b60ff8c 100644
--- a/flang/include/flang/Parser/parse-tree.h
+++ b/flang/include/flang/Parser/parse-tree.h
@@ -4943,24 +4943,6 @@ struct OmpDeclareVariantDirective {
   CharBlock source;
 };
 
-// 2.10.6 declare-target -> DECLARE TARGET (extended-list) |
-//                          DECLARE TARGET [declare-target-clause[ [,]
-//                                          declare-target-clause]...]
-struct OmpDeclareTargetWithList {
-  WRAPPER_CLASS_BOILERPLATE(OmpDeclareTargetWithList, OmpObjectList);
-  CharBlock source;
-};
-
-struct OmpDeclareTargetWithClause {
-  WRAPPER_CLASS_BOILERPLATE(OmpDeclareTargetWithClause, OmpClauseList);
-  CharBlock source;
-};
-
-struct OmpDeclareTargetSpecifier {
-  UNION_CLASS_BOILERPLATE(OmpDeclareTargetSpecifier);
-  std::variant<OmpDeclareTargetWithList, OmpDeclareTargetWithClause> u;
-};
-
 // Ref: [4.5:110-113], [5.0:180-185], [5.1:210-216], [5.2:206-207],
 //      [6.0:346-348]
 //
diff --git a/flang/lib/Parser/unparse.cpp b/flang/lib/Parser/unparse.cpp
index be166bcb743ba..a2b0b9ef3196c 100644
--- a/flang/lib/Parser/unparse.cpp
+++ b/flang/lib/Parser/unparse.cpp
@@ -2492,9 +2492,6 @@ class UnparseVisitor {
   void Unparse(const OpenMPCriticalConstruct &x) {
     Unparse(static_cast<const OmpBlockConstruct &>(x));
   }
-  void Unparse(const OmpDeclareTargetWithList &x) {
-    Put("("), Walk(x.v), Put(")");
-  }
   void Unparse(const OmpInitializerProc &x) {
     Walk(std::get<ProcedureDesignator>(x.t));
     Put("(");

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