[flang-commits] [flang] f2b7f18 - Revert "[flang][OpenMP] Lowering support for default clause"

Shraiysh Vaishay via flang-commits flang-commits at lists.llvm.org
Tue Jul 26 06:49:35 PDT 2022


Author: Shraiysh Vaishay
Date: 2022-07-26T19:18:27+05:30
New Revision: f2b7f18e6375bb7eb6232f35c9ca30da8e20d7c7

URL: https://github.com/llvm/llvm-project/commit/f2b7f18e6375bb7eb6232f35c9ca30da8e20d7c7
DIFF: https://github.com/llvm/llvm-project/commit/f2b7f18e6375bb7eb6232f35c9ca30da8e20d7c7.diff

LOG: Revert "[flang][OpenMP] Lowering support for default clause"

This reverts commit 05e6fce84fd39d150195b8928561f2c90c71e538.

Added: 
    

Modified: 
    flang/include/flang/Lower/AbstractConverter.h
    flang/lib/Lower/Bridge.cpp
    flang/lib/Lower/OpenMP.cpp
    flang/lib/Semantics/resolve-directives.cpp
    flang/test/Lower/OpenMP/omp-parallel-lastprivate-clause-scalar.f90

Removed: 
    flang/test/Lower/OpenMP/default-clause.f90
    flang/test/Semantics/OpenMP/omp-default-clause.f90


################################################################################
diff  --git a/flang/include/flang/Lower/AbstractConverter.h b/flang/include/flang/Lower/AbstractConverter.h
index e54d5fb58e3f3..4ee4504608bc1 100644
--- a/flang/include/flang/Lower/AbstractConverter.h
+++ b/flang/include/flang/Lower/AbstractConverter.h
@@ -111,8 +111,7 @@ class AbstractConverter {
   virtual void collectSymbolSet(
       pft::Evaluation &eval,
       llvm::SetVector<const Fortran::semantics::Symbol *> &symbolSet,
-      Fortran::semantics::Symbol::Flag flag,
-      bool checkHostAssoicatedSymbols = true) = 0;
+      Fortran::semantics::Symbol::Flag flag, bool isUltimateSymbol = true) = 0;
 
   //===--------------------------------------------------------------------===//
   // Expressions

diff  --git a/flang/lib/Lower/Bridge.cpp b/flang/lib/Lower/Bridge.cpp
index 1bda0af563053..05af25a842e94 100644
--- a/flang/lib/Lower/Bridge.cpp
+++ b/flang/lib/Lower/Bridge.cpp
@@ -556,19 +556,12 @@ class FirConverter : public Fortran::lower::AbstractConverter {
       Fortran::lower::pft::Evaluation &eval,
       llvm::SetVector<const Fortran::semantics::Symbol *> &symbolSet,
       Fortran::semantics::Symbol::Flag flag,
-      bool checkHostAssoicatedSymbols) override final {
+      bool isUltimateSymbol) override final {
     auto addToList = [&](const Fortran::semantics::Symbol &sym) {
-      std::function<void(const Fortran::semantics::Symbol &)> insertSymbols =
-          [&](const Fortran::semantics::Symbol &oriSymbol) {
-            if (oriSymbol.test(flag))
-              symbolSet.insert(&oriSymbol);
-            if (checkHostAssoicatedSymbols)
-              if (const auto *details{
-                      oriSymbol
-                          .detailsIf<Fortran::semantics::HostAssocDetails>()})
-                insertSymbols(details->symbol());
-          };
-      insertSymbols(sym);
+      const Fortran::semantics::Symbol &symbol =
+          isUltimateSymbol ? sym.GetUltimate() : sym;
+      if (symbol.test(flag))
+        symbolSet.insert(&symbol);
     };
     Fortran::lower::pft::visitAllSymbols(eval, addToList);
   }

diff  --git a/flang/lib/Lower/OpenMP.cpp b/flang/lib/Lower/OpenMP.cpp
index 074fc284957f8..0016d8c77ea66 100644
--- a/flang/lib/Lower/OpenMP.cpp
+++ b/flang/lib/Lower/OpenMP.cpp
@@ -85,66 +85,24 @@ static void createPrivateVarSyms(Fortran::lower::AbstractConverter &converter,
 
 template <typename Op>
 static bool privatizeVars(Op &op, Fortran::lower::AbstractConverter &converter,
-                          const Fortran::parser::OmpClauseList &opClauseList,
-                          Fortran::lower::pft::Evaluation &eval) {
+                          const Fortran::parser::OmpClauseList &opClauseList) {
   fir::FirOpBuilder &firOpBuilder = converter.getFirOpBuilder();
   auto insPt = firOpBuilder.saveInsertionPoint();
   firOpBuilder.setInsertionPointToStart(firOpBuilder.getAllocaBlock());
   bool hasFirstPrivateOp = false;
   bool hasLastPrivateOp = false;
-  // The symbols in private/firstprivate clause or region under
-  // default(private/firstprivate) clause.
-  // TODO: Current implementation of default clause is very fragile. Implement
-  // it instead if a pre-FIR pass
-  llvm::SetVector<const Fortran::semantics::Symbol *> symbols;
-  llvm::SetVector<const Fortran::semantics::Symbol *> sharedSymbols;
-  std::map<Fortran::semantics::SourceName, const Fortran::semantics::Symbol *>
-      uniqueSymbolMap;
-  auto collectOmpObjectListSymbol =
-      [&](const Fortran::parser::OmpObjectList &ompObjectList,
-          llvm::SetVector<const Fortran::semantics::Symbol *> &symbolSet) {
-        for (const Fortran::parser::OmpObject &ompObject : ompObjectList.v) {
-          Fortran::semantics::Symbol *sym = getOmpObjectSymbol(ompObject);
-          symbolSet.insert(sym);
-        }
-      };
-
-  auto removeDuplicateSymbols =
-      [&](llvm::SetVector<const Fortran::semantics::Symbol *> &symbols) {
-        // default clause in nested directives can create two symbols belonging
-        // to the same entity resulting in double privatization. Reduce the
-        // count of such symbols to 1.
-        for (auto sym : symbols)
-          if (auto it{uniqueSymbolMap.find(sym->name())};
-              it == uniqueSymbolMap.end())
-            uniqueSymbolMap.insert(
-                std::pair<Fortran::semantics::SourceName,
-                          const Fortran::semantics::Symbol *>(sym->name(),
-                                                              sym));
-      };
   // We need just one ICmpOp for multiple LastPrivate clauses.
   mlir::arith::CmpIOp cmpOp;
-  // Collect the privatized symbols for private/firstprivate/default clause.
+
   for (const Fortran::parser::OmpClause &clause : opClauseList.v) {
     if (const auto &privateClause =
             std::get_if<Fortran::parser::OmpClause::Private>(&clause.u)) {
-      collectOmpObjectListSymbol(privateClause->v, symbols);
-      removeDuplicateSymbols(symbols);
+      createPrivateVarSyms(converter, privateClause);
     } else if (const auto &firstPrivateClause =
                    std::get_if<Fortran::parser::OmpClause::Firstprivate>(
                        &clause.u)) {
-      collectOmpObjectListSymbol(firstPrivateClause->v, symbols);
-      removeDuplicateSymbols(symbols);
+      createPrivateVarSyms(converter, firstPrivateClause);
       hasFirstPrivateOp = true;
-    } else if (const auto &sharedClause =
-                   std::get_if<Fortran::parser::OmpClause::Shared>(&clause.u)) {
-      // `shared(...)` does not define a privatization flag. In case of nested
-      // block constructs, presence of `default(firstprivate)` or
-      // `default(private)` in the inner block construct may lead to privatizing
-      // a shared variable in the outer block construct. To prevent that,
-      // explicitly collect the shared symbols and remove them from the list of
-      // symbols to be privatized.
-      collectOmpObjectListSymbol(sharedClause->v, sharedSymbols);
     } else if (const auto &lastPrivateClause =
                    std::get_if<Fortran::parser::OmpClause::Lastprivate>(
                        &clause.u)) {
@@ -208,48 +166,7 @@ static bool privatizeVars(Op &op, Fortran::lower::AbstractConverter &converter,
       hasLastPrivateOp = true;
     }
   }
-
-  for (const Fortran::parser::OmpClause &clause : opClauseList.v) {
-    if (const auto &defaultClause =
-            std::get_if<Fortran::parser::OmpClause::Default>(&clause.u)) {
-      if (defaultClause->v.v ==
-          Fortran::parser::OmpDefaultClause::Type::Private) {
-        converter.collectSymbolSet(eval, symbols,
-                                   Fortran::semantics::Symbol::Flag::OmpPrivate,
-                                   /*checkHostAssoicatedSymbols=*/true);
-        removeDuplicateSymbols(symbols);
-      } else if (defaultClause->v.v ==
-                 Fortran::parser::OmpDefaultClause::Type::Firstprivate) {
-        converter.collectSymbolSet(
-            eval, symbols, Fortran::semantics::Symbol::Flag::OmpFirstPrivate,
-            /*checkHostAssoicatedSymbols=*/true);
-        removeDuplicateSymbols(symbols);
-      }
-    }
-  }
-
-  for (auto sharedSymbol : sharedSymbols) {
-    auto it = uniqueSymbolMap.find(sharedSymbol->name());
-    if (it != uniqueSymbolMap.end()) {
-      uniqueSymbolMap.erase(it);
-    }
-  }
-  for (auto uniqueSymbolMapPair : uniqueSymbolMap) {
-    // Privatization for symbols which are pre-determined (like loop index
-    // variables) happen separately, for everything else privatize here.
-    const Fortran::semantics::Symbol *sym = uniqueSymbolMapPair.second;
-    if (sym->test(Fortran::semantics::Symbol::Flag::OmpPreDetermined))
-      continue;
-    bool success = converter.createHostAssociateVarClone(*sym);
-    (void)success;
-    assert(success && "Privatization failed due to existing binding");
-    if (sym->test(Fortran::semantics::Symbol::Flag::OmpFirstPrivate)) {
-      converter.copyHostAssociateVar(*sym);
-      hasFirstPrivateOp = true;
-    }
-  }
-
-  if (hasFirstPrivateOp || hasLastPrivateOp)
+  if (hasFirstPrivateOp)
     firOpBuilder.create<mlir::omp::BarrierOp>(converter.getCurrentLocation());
   firOpBuilder.restoreInsertionPoint(insPt);
   return hasLastPrivateOp;
@@ -541,7 +458,7 @@ createBodyOfOp(Op &op, Fortran::lower::AbstractConverter &converter,
 
   // Handle privatization. Do not privatize if this is the outer operation.
   if (clauses && !outerCombined) {
-    bool lastPrivateOp = privatizeVars(op, converter, *clauses, eval);
+    bool lastPrivateOp = privatizeVars(op, converter, *clauses);
     // LastPrivatization, due to introduction of
     // new control flow, changes the insertion point,
     // thus restore it.

diff  --git a/flang/lib/Semantics/resolve-directives.cpp b/flang/lib/Semantics/resolve-directives.cpp
index ec8119594776d..0bb8798c62c7d 100644
--- a/flang/lib/Semantics/resolve-directives.cpp
+++ b/flang/lib/Semantics/resolve-directives.cpp
@@ -1490,34 +1490,6 @@ void OmpAttributeVisitor::Post(const parser::Name &name) {
         }
       }
     }
-    std::vector<Symbol *> defaultDSASymbols;
-    for (int dirContextIndex = 0;
-         dirContextIndex <= (int)dirContext_.size() - 1; dirContextIndex++) {
-      DirContext &dirContext = dirContext_[dirContextIndex];
-      bool hasDataSharingAttr{false};
-      for (auto symMap : dirContext.objectWithDSA) {
-        // if the `symbol` already has a data-sharing attribute
-        if (symMap.first->name() == name.symbol->name()) {
-          hasDataSharingAttr = true;
-          break;
-        }
-      }
-      if (hasDataSharingAttr)
-        continue;
-
-      if (dirContext.defaultDSA == semantics::Symbol::Flag::OmpPrivate ||
-          dirContext.defaultDSA == semantics::Symbol::Flag::OmpFirstPrivate) {
-        if (!defaultDSASymbols.size())
-          defaultDSASymbols.push_back(DeclarePrivateAccessEntity(
-              symbol->GetUltimate(), dirContext.defaultDSA,
-              context_.FindScope(dirContext.directiveSource)));
-
-        else
-          defaultDSASymbols.push_back(DeclarePrivateAccessEntity(
-              *defaultDSASymbols.back(), dirContext.defaultDSA,
-              context_.FindScope(dirContext.directiveSource)));
-      }
-    }
   } // within OpenMP construct
 }
 

diff  --git a/flang/test/Lower/OpenMP/default-clause.f90 b/flang/test/Lower/OpenMP/default-clause.f90
deleted file mode 100644
index abe2a78b50ccb..0000000000000
--- a/flang/test/Lower/OpenMP/default-clause.f90
+++ /dev/null
@@ -1,323 +0,0 @@
-! This test checks lowering of OpenMP parallel directive
-! with `DEFAULT` clause present.
-
-! RUN: %flang_fc1 -emit-fir -fopenmp %s -o - | FileCheck %s
-! RUN: bbc -fopenmp -emit-fir %s -o - | FileCheck %s
-
-
-!CHECK: func @_QQmain() {
-!CHECK: %[[W:.*]] = fir.alloca i32 {bindc_name = "w", uniq_name = "_QFEw"}
-!CHECK: %[[X:.*]] = fir.alloca i32 {bindc_name = "x", uniq_name = "_QFEx"}
-!CHECK: %[[Y:.*]] = fir.alloca i32 {bindc_name = "y", uniq_name = "_QFEy"}
-!CHECK: %[[Z:.*]] = fir.alloca i32 {bindc_name = "z", uniq_name = "_QFEz"}
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFEw"}
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFEx"}
-!CHECK: %[[const:.*]] = fir.load %[[X]] : !fir.ref<i32>
-!CHECK: fir.store %[[const]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFEy"}
-!CHECK: omp.barrier
-!CHECK: %[[const:.*]] = arith.constant 2 : i32
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: %[[result:.*]] = arith.muli %[[const]], %[[temp]] : i32
-!CHECK: fir.store %[[result]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_W]] : !fir.ref<i32>
-!CHECK: %[[const:.*]] = arith.constant 45 : i32
-!CHECK: %[[result:.*]] = arith.addi %[[temp]], %[[const]] : i32
-!CHECK: fir.store %[[result]] to %[[Z]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-
-program default_clause_lowering
-    integer :: x, y, z, w
-
-    !$omp parallel default(private) firstprivate(x) shared(z)
-        x = y * 2
-        z = w + 45
-    !$omp end parallel
-
-!CHECK: omp.parallel {
-!CHECK: %[[temp:.*]] = fir.load %[[Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-
-    !$omp parallel default(shared)
-        x = y
-    !$omp end parallel
-
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFEx"}
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-
-    !$omp parallel default(none) private(x, y)
-        x = y
-    !$omp end parallel
-
-!CHECK: omp.parallel   {
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFEx"}
-!CHECK: %[[temp:.*]] = fir.load %[[X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-
-    !$omp parallel default(firstprivate) firstprivate(y)
-        x = y
-    !$omp end parallel
-
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFEw"}
-!CHECK: %[[temp:.*]] = fir.load %[[W]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_W]] : !fir.ref<i32>
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFEx"}
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: %[[const:.*]] = arith.constant 2 : i32
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: %[[result:.*]] = arith.muli %[[const]], %[[temp]] : i32
-!CHECK: fir.store %[[result]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_W]] : !fir.ref<i32>
-!CHECK: %[[const:.*]] = arith.constant 45 : i32
-!CHECK: %[[result:.*]] = arith.addi %[[temp]], %[[const]] : i32
-!CHECK: fir.store %[[result]] to %[[Z]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-
-    !$omp parallel default(firstprivate) private(x) shared(z)
-        x = y * 2
-        z = w + 45
-    !$omp end parallel
-
-!CHECK: omp.parallel   {
-!CHECK: omp.parallel   {
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFEx"}
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFEw"}
-!CHECK: %[[temp:.*]] = fir.load %[[W]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_W]] : !fir.ref<i32>
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFEx"}
-!CHECK: %[[temp:.*]] = fir.load %[[X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_W]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.terminator
-!CHECK: }
-    !$omp parallel
-        !$omp parallel default(private)
-            x = y
-        !$omp end parallel
-
-        !$omp parallel default(firstprivate)
-            w = x
-        !$omp end parallel
-    !$omp end parallel
-
-!CHECK: omp.parallel   {
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFEy"}
-!CHECK: %[[PRIVATE_Z:.*]] = fir.alloca i32 {bindc_name = "z", pinned, uniq_name = "_QFEz"}
-!CHECK: %[[TEMP:.*]] = fir.alloca i32 {adapt.valuebyref, pinned}
-!CHECK: %[[const_1:.*]] = arith.constant 1 : i32
-!CHECK: %[[const_2:.*]] = arith.constant 10 : i32
-!CHECK: %[[const_3:.*]] = arith.constant 1 : i32
-!CHECK: omp.wsloop   for  (%[[ARG:.*]]) : i32 = (%[[const_1]]) to (%[[const_2]]) inclusive step (%[[const_3]]) {
-!CHECK: fir.store %[[ARG]] to %[[TEMP]] : !fir.ref<i32>
-!CHECK: %[[temp_1:.*]] = fir.load %[[PRIVATE_Z]] : !fir.ref<i32>
-!CHECK: %[[temp_2:.*]] = fir.load %[[TEMP]] : !fir.ref<i32>
-!CHECK: %[[result:.*]] = arith.addi %[[temp_1]], %[[temp_2]] : i32
-!CHECK: fir.store %[[result]] to %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: omp.yield
-!CHECK: }
-!CHECK: omp.terminator
-!CHECK: }
-    !$omp parallel do default(private)
-        do x = 1, 10
-            y = z + x
-        enddo
-    !$omp end parallel do
-end program default_clause_lowering
-
-subroutine nested_default_clause_tests
-    integer :: x, y, z, w, k, a
-    
-!CHECK: %[[A:.*]] = fir.alloca i32 {bindc_name = "a", uniq_name = "_QFnested_default_clause_testsEa"}
-!CHECK: %[[K:.*]] = fir.alloca i32 {bindc_name = "k", uniq_name = "_QFnested_default_clause_testsEk"}
-!CHECK: %[[W:.*]] = fir.alloca i32 {bindc_name = "w", uniq_name = "_QFnested_default_clause_testsEw"}
-!CHECK: %[[X:.*]] = fir.alloca i32 {bindc_name = "x", uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[Y:.*]] = fir.alloca i32 {bindc_name = "y", uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[Z:.*]] = fir.alloca i32 {bindc_name = "z", uniq_name = "_QFnested_default_clause_testsEz"}
-!CHECK: omp.parallel   {
-!CHECK: %[[PRIVATE_A:.*]] = fir.alloca i32 {bindc_name = "a", pinned, uniq_name = "_QFnested_default_clause_testsEa"}
-!CHECK: %[[PRIVATE_K:.*]] = fir.alloca i32 {bindc_name = "k", pinned, uniq_name = "_QFnested_default_clause_testsEk"}
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[temp:.*]] = fir.load %[[X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[PRIVATE_Z:.*]] = fir.alloca i32 {bindc_name = "z", pinned, uniq_name = "_QFnested_default_clause_testsEz"}
-!CHECK: omp.barrier
-!CHECK: omp.parallel {
-!CHECK: %[[INNER_PRIVATE_A:.*]] = fir.alloca i32 {bindc_name = "a", pinned, uniq_name = "_QFnested_default_clause_testsEa"}
-!CHECK: %[[INNER_PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[INNER_PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[const:.*]] = arith.constant 20 : i32
-!CHECK: fir.store %[[const]] to %[[INNER_PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: %[[const:.*]] = arith.constant 10 : i32
-!CHECK: fir.store %[[const]] to %[[INNER_PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.parallel {
-!CHECK: %[[const:.*]] = arith.constant 10 : i32
-!CHECK: fir.store %[[const]] to %[[INNER_PRIVATE_A]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.parallel   {
-!CHECK: %[[INNER_PRIVATE_K:.*]] = fir.alloca i32 {bindc_name = "k", pinned, uniq_name = "_QFnested_default_clause_testsEk"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_K]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[INNER_PRIVATE_K]] : !fir.ref<i32>
-!CHECK: %[[INNER_PRIVATE_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFnested_default_clause_testsEw"}
-!CHECK: %[[INNER_PRIVATE_Z:.*]] = fir.alloca i32 {bindc_name = "z", pinned, uniq_name = "_QFnested_default_clause_testsEz"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Z]]
-!CHECK: fir.store %[[temp]] to %[[INNER_PRIVATE_Z]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: %[[const:.*]] = arith.constant 30 : i32
-!CHECK: fir.store %[[const]] to %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: %[[const:.*]] = arith.constant 40 : i32
-!CHECK: fir.store %[[const]] to %[[INNER_PRIVATE_W]] : !fir.ref<i32>
-!CHECK: %[[const:.*]] = arith.constant 50 : i32
-!CHECK: fir.store %[[const]] to %[[INNER_PRIVATE_Z]] : !fir.ref<i32>
-!CHECK: %[[const:.*]] = arith.constant 40 : i32
-!CHECK: fir.store %[[const]] to %[[INNER_PRIVATE_K]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.terminator
-!CHECK: }
-    !$omp parallel  firstprivate(x) private(y) shared(w) default(private)  
-        !$omp parallel default(private)
-           y = 20
-           x = 10
-           !$omp parallel
-                a = 10
-           !$omp end parallel
-        !$omp end parallel 
-
-        !$omp parallel default(firstprivate) shared(y) private(w) 
-            y = 30
-            w = 40 
-            z = 50
-            k = 40
-        !$omp end parallel
-    !$omp end parallel
-    
-    
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFnested_default_clause_testsEw"} 
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[PRIVATE_Z:.*]] = fir.alloca i32 {bindc_name = "z", pinned, uniq_name = "_QFnested_default_clause_testsEz"}
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_INNER_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_INNER_X]] : !fir.ref<i32>
-!CHECK: %[[INNER_PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[INNER_PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: %[[temp:.*]] = fir.load %[[INNER_PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_INNER_X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_INNER_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFnested_default_clause_testsEw"} 
-!CHECK: %[[PRIVATE_INNER_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[temp_1:.*]] = fir.load %[[PRIVATE_INNER_X]] : !fir.ref<i32>
-!CHECK: %[[temp_2:.*]] = fir.load %[[PRIVATE_Z]] : !fir.ref<i32>
-!CHECK: %[[result:.*]] = arith.addi %{{.*}}, %{{.*}} : i32
-!CHECK: fir.store %[[result]] to %[[PRIVATE_INNER_W]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-    !$omp parallel default(private)
-        !$omp parallel default(firstprivate)
-            x = y
-        !$omp end parallel
-
-        !$omp parallel default(private) shared(z)
-            w = x + z
-        !$omp end parallel
-    !$omp end parallel    
-    
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_W:.*]] = fir.alloca i32 {bindc_name = "w", pinned, uniq_name = "_QFnested_default_clause_testsEw"}
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[PRIVATE_Z:.*]] = fir.alloca i32 {bindc_name = "z", pinned, uniq_name = "_QFnested_default_clause_testsEz"}
-!CHECK: omp.parallel {
-!CHECK: %[[INNER_PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[INNER_PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[INNER_PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[INNER_PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: %[[temp:.*]] = fir.load %[[INNER_PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[INNER_PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.parallel {
-!CHECK: %[[temp_1:.*]] = fir.load %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[temp_2:.*]] = fir.load %[[PRIVATE_Z]] : !fir.ref<i32>
-!CHECK: %[[temp_3:.*]] = arith.addi %[[temp_1]], %[[temp_2]] : i32
-!CHECK: fir.store %[[temp_3]] to %[[PRIVATE_W]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: }
-    !$omp parallel default(private)
-		!$omp parallel default(firstprivate)
-			x = y
-		!$omp end parallel
-
-		!$omp parallel default(shared)
-			w = x + z
-		!$omp end parallel
-	!$omp end parallel
-
-!CHECK: omp.parallel {
-!CHECK: %[[PRIVATE_X:.*]] = fir.alloca i32 {bindc_name = "x", pinned, uniq_name = "_QFnested_default_clause_testsEx"}
-!CHECK: %[[temp:.*]] = fir.load %[[X]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: %[[PRIVATE_Y:.*]] = fir.alloca i32 {bindc_name = "y", pinned, uniq_name = "_QFnested_default_clause_testsEy"}
-!CHECK: %[[temp:.*]] = fir.load %[[Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: omp.barrier
-!CHECK: omp.single {
-!CHECK: %[[temp:.*]] = fir.load %[[PRIVATE_Y]] : !fir.ref<i32>
-!CHECK: fir.store %[[temp]] to %[[PRIVATE_X]] : !fir.ref<i32>
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: omp.terminator
-!CHECK: }
-!CHECK: } 
-	!$omp parallel default(firstprivate)
-		!$omp single
-			x = y
-		!$omp end single
-	!$omp end parallel
-end subroutine

diff  --git a/flang/test/Lower/OpenMP/omp-parallel-lastprivate-clause-scalar.f90 b/flang/test/Lower/OpenMP/omp-parallel-lastprivate-clause-scalar.f90
index bf42bf57dc033..7e0aacc353caf 100644
--- a/flang/test/Lower/OpenMP/omp-parallel-lastprivate-clause-scalar.f90
+++ b/flang/test/Lower/OpenMP/omp-parallel-lastprivate-clause-scalar.f90
@@ -150,12 +150,12 @@ subroutine mult_lastprivate_int2(arg1, arg2)
 
 !CHECK: func.func @_QPfirstpriv_lastpriv_int(%[[ARG1:.*]]: !fir.ref<i32> {fir.bindc_name = "arg1"}, %[[ARG2:.*]]: !fir.ref<i32> {fir.bindc_name = "arg2"}) {
 !CHECK-DAG: omp.parallel  {
-! Lastprivate Allocation
-!CHECK-NEXT: %[[CLONE2:.*]] = fir.alloca i32 {bindc_name = "arg2"
 !CHECK-DAG: %[[CLONE1:.*]] = fir.alloca i32 {bindc_name = "arg1"
 ! Firstprivate update
 !CHECK-NEXT: %[[FPV_LD:.*]] = fir.load %[[ARG1]] : !fir.ref<i32>
 !CHECK-NEXT: fir.store %[[FPV_LD]] to %[[CLONE1]] : !fir.ref<i32>
+! Lastprivate Allocation
+!CHECK-NEXT: %[[CLONE2:.*]] = fir.alloca i32 {bindc_name = "arg2"
 !CHECK-NEXT: omp.barrier
 !CHECK: omp.wsloop for (%[[INDX_WS:.*]]) : {{.*}} {
 

diff  --git a/flang/test/Semantics/OpenMP/omp-default-clause.f90 b/flang/test/Semantics/OpenMP/omp-default-clause.f90
deleted file mode 100644
index 9cde77be2babe..0000000000000
--- a/flang/test/Semantics/OpenMP/omp-default-clause.f90
+++ /dev/null
@@ -1,45 +0,0 @@
-! RUN: %flang_fc1 -fopenmp -fdebug-dump-symbols %s | FileCheck %s
-
-! Test symbols generated in block constructs in the 
-! presence of `default(...)` clause
-
-program sample
-    !CHECK: a size=4 offset=20: ObjectEntity type: INTEGER(4)
-    !CHECK: k size=4 offset=16: ObjectEntity type: INTEGER(4)
-    !CHECK: w size=4 offset=12: ObjectEntity type: INTEGER(4)
-    !CHECK: x size=4 offset=0: ObjectEntity type: INTEGER(4)
-    !CHECK: y size=4 offset=4: ObjectEntity type: INTEGER(4)
-    !CHECK: z size=4 offset=8: ObjectEntity type: INTEGER(4)
-    integer x, y, z, w, k, a 
-    !$omp parallel  firstprivate(x) private(y) shared(w) default(private)
-        !CHECK: OtherConstruct scope: size=0 alignment=1
-        !CHECK: a (OmpPrivate): HostAssoc
-        !CHECK: k (OmpPrivate): HostAssoc
-        !CHECK: x (OmpFirstPrivate): HostAssoc
-        !CHECK: y (OmpPrivate): HostAssoc
-        !CHECK: z (OmpPrivate): HostAssoc
-        !$omp parallel default(private)
-            !CHECK: OtherConstruct scope: size=0 alignment=1
-            !CHECK: a (OmpPrivate): HostAssoc
-            !CHECK: x (OmpPrivate): HostAssoc
-            !CHECK: y (OmpPrivate): HostAssoc
-            y = 20
-            x = 10
-           !$omp parallel
-                !CHECK: OtherConstruct scope: size=0 alignment=1
-                a = 10
-           !$omp end parallel
-        !$omp end parallel 
-
-        !$omp parallel default(firstprivate) shared(y) private(w)
-            !CHECK: OtherConstruct scope: size=0 alignment=1
-            !CHECK: k (OmpFirstPrivate): HostAssoc
-            !CHECK: w (OmpPrivate): HostAssoc
-            !CHECK: z (OmpFirstPrivate): HostAssoc
-            y = 30
-            w = 40 
-            z = 50 
-            k = 40
-        !$omp end parallel
-    !$omp end parallel  
-end program sample


        


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