r339603 - [OPENMP] Fix emission of the loop doacross constructs.

Jonas Hahnfeld via cfe-commits cfe-commits at lists.llvm.org
Wed Aug 15 02:02:19 PDT 2018


Alexey, Hans,

does it make sense to backport for 7.0 as it fixes PR37580?

Thanks,
Jonas

On 2018-08-13 21:04, Alexey Bataev via cfe-commits wrote:
> Author: abataev
> Date: Mon Aug 13 12:04:24 2018
> New Revision: 339603
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=339603&view=rev
> Log:
> [OPENMP] Fix emission of the loop doacross constructs.
> 
> The number of loops associated with the OpenMP loop constructs should
> not be considered as the number loops to collapse.
> 
> Modified:
>     cfe/trunk/include/clang/AST/OpenMPClause.h
>     cfe/trunk/lib/AST/OpenMPClause.cpp
>     cfe/trunk/lib/CodeGen/CGOpenMPRuntime.cpp
>     cfe/trunk/lib/CodeGen/CGOpenMPRuntime.h
>     cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp
>     cfe/trunk/lib/Sema/SemaOpenMP.cpp
>     cfe/trunk/lib/Serialization/ASTReaderStmt.cpp
>     cfe/trunk/lib/Serialization/ASTWriterStmt.cpp
>     cfe/trunk/test/OpenMP/ordered_doacross_codegen.c
>     cfe/trunk/test/OpenMP/ordered_doacross_codegen.cpp
>     cfe/trunk/test/OpenMP/parallel_for_simd_ast_print.cpp
> 
> Modified: cfe/trunk/include/clang/AST/OpenMPClause.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/OpenMPClause.h?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/AST/OpenMPClause.h (original)
> +++ cfe/trunk/include/clang/AST/OpenMPClause.h Mon Aug 13 12:04:24 2018
> @@ -930,8 +930,11 @@ public:
>  /// \endcode
>  /// In this example directive '#pragma omp for' has 'ordered' clause 
> with
>  /// parameter 2.
> -class OMPOrderedClause : public OMPClause {
> +class OMPOrderedClause final
> +    : public OMPClause,
> +      private llvm::TrailingObjects<OMPOrderedClause, Expr *> {
>    friend class OMPClauseReader;
> +  friend TrailingObjects;
> 
>    /// Location of '('.
>    SourceLocation LParenLoc;
> @@ -939,6 +942,26 @@ class OMPOrderedClause : public OMPClaus
>    /// Number of for-loops.
>    Stmt *NumForLoops = nullptr;
> 
> +  /// Real number of loops.
> +  unsigned NumberOfLoops = 0;
> +
> +  /// Build 'ordered' clause.
> +  ///
> +  /// \param Num Expression, possibly associated with this clause.
> +  /// \param NumLoops Number of loops, associated with this clause.
> +  /// \param StartLoc Starting location of the clause.
> +  /// \param LParenLoc Location of '('.
> +  /// \param EndLoc Ending location of the clause.
> +  OMPOrderedClause(Expr *Num, unsigned NumLoops, SourceLocation 
> StartLoc,
> +                   SourceLocation LParenLoc, SourceLocation EndLoc)
> +      : OMPClause(OMPC_ordered, StartLoc, EndLoc), 
> LParenLoc(LParenLoc),
> +        NumForLoops(Num), NumberOfLoops(NumLoops) {}
> +
> +  /// Build an empty clause.
> +  explicit OMPOrderedClause(unsigned NumLoops)
> +      : OMPClause(OMPC_ordered, SourceLocation(), SourceLocation()),
> +        NumberOfLoops(NumLoops) {}
> +
>    /// Set the number of associated for-loops.
>    void setNumForLoops(Expr *Num) { NumForLoops = Num; }
> 
> @@ -946,17 +969,17 @@ public:
>    /// Build 'ordered' clause.
>    ///
>    /// \param Num Expression, possibly associated with this clause.
> +  /// \param NumLoops Number of loops, associated with this clause.
>    /// \param StartLoc Starting location of the clause.
>    /// \param LParenLoc Location of '('.
>    /// \param EndLoc Ending location of the clause.
> -  OMPOrderedClause(Expr *Num, SourceLocation StartLoc,
> -                    SourceLocation LParenLoc, SourceLocation EndLoc)
> -      : OMPClause(OMPC_ordered, StartLoc, EndLoc), 
> LParenLoc(LParenLoc),
> -        NumForLoops(Num) {}
> +  static OMPOrderedClause *Create(const ASTContext &C, Expr *Num,
> +                                  unsigned NumLoops, SourceLocation 
> StartLoc,
> +                                  SourceLocation LParenLoc,
> +                                  SourceLocation EndLoc);
> 
>    /// Build an empty clause.
> -  explicit OMPOrderedClause()
> -      : OMPClause(OMPC_ordered, SourceLocation(), SourceLocation()) {}
> +  static OMPOrderedClause* CreateEmpty(const ASTContext &C, unsigned 
> NumLoops);
> 
>    /// Sets the location of '('.
>    void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; }
> @@ -967,6 +990,17 @@ public:
>    /// Return the number of associated for-loops.
>    Expr *getNumForLoops() const { return 
> cast_or_null<Expr>(NumForLoops); }
> 
> +  /// Set number of iterations for the specified loop.
> +  void setLoopNumIterations(unsigned NumLoop, Expr *NumIterations);
> +  /// Get number of iterations for all the loops.
> +  ArrayRef<Expr *> getLoopNumIterations() const;
> +
> +  /// Set loop counter for the specified loop.
> +  void setLoopCounter(unsigned NumLoop, Expr *Counter);
> +  /// Get loops counter for the specified loop.
> +  Expr *getLoopCunter(unsigned NumLoop);
> +  const Expr *getLoopCunter(unsigned NumLoop) const;
> +
>    child_range children() { return child_range(&NumForLoops,
> &NumForLoops + 1); }
> 
>    static bool classof(const OMPClause *T) {
> @@ -3095,24 +3129,32 @@ class OMPDependClause final
>    /// Colon location.
>    SourceLocation ColonLoc;
> 
> +  /// Number of loops, associated with the depend clause.
> +  unsigned NumLoops = 0;
> +
>    /// Build clause with number of variables \a N.
>    ///
>    /// \param StartLoc Starting location of the clause.
>    /// \param LParenLoc Location of '('.
>    /// \param EndLoc Ending location of the clause.
>    /// \param N Number of the variables in the clause.
> +  /// \param NumLoops Number of loops that is associated with this 
> depend
> +  /// clause.
>    OMPDependClause(SourceLocation StartLoc, SourceLocation LParenLoc,
> -                  SourceLocation EndLoc, unsigned N)
> +                  SourceLocation EndLoc, unsigned N, unsigned 
> NumLoops)
>        : OMPVarListClause<OMPDependClause>(OMPC_depend, StartLoc, 
> LParenLoc,
> -                                          EndLoc, N) {}
> +                                          EndLoc, N), 
> NumLoops(NumLoops) {}
> 
>    /// Build an empty clause.
>    ///
>    /// \param N Number of variables.
> -  explicit OMPDependClause(unsigned N)
> +  /// \param NumLoops Number of loops that is associated with this 
> depend
> +  /// clause.
> +  explicit OMPDependClause(unsigned N, unsigned NumLoops)
>        : OMPVarListClause<OMPDependClause>(OMPC_depend, 
> SourceLocation(),
>                                            SourceLocation(), 
> SourceLocation(),
> -                                          N) {}
> +                                          N),
> +        NumLoops(NumLoops) {}
> 
>    /// Set dependency kind.
>    void setDependencyKind(OpenMPDependClauseKind K) { DepKind = K; }
> @@ -3134,16 +3176,23 @@ public:
>    /// \param DepLoc Location of the dependency type.
>    /// \param ColonLoc Colon location.
>    /// \param VL List of references to the variables.
> -  static OMPDependClause *
> -  Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation
> LParenLoc,
> -         SourceLocation EndLoc, OpenMPDependClauseKind DepKind,
> -         SourceLocation DepLoc, SourceLocation ColonLoc, ArrayRef<Expr 
> *> VL);
> +  /// \param NumLoops Number of loops that is associated with this 
> depend
> +  /// clause.
> +  static OMPDependClause *Create(const ASTContext &C, SourceLocation 
> StartLoc,
> +                                 SourceLocation LParenLoc,
> +                                 SourceLocation EndLoc,
> +                                 OpenMPDependClauseKind DepKind,
> +                                 SourceLocation DepLoc,
> SourceLocation ColonLoc,
> +                                 ArrayRef<Expr *> VL, unsigned 
> NumLoops);
> 
>    /// Creates an empty clause with \a N variables.
>    ///
>    /// \param C AST context.
>    /// \param N The number of variables.
> -  static OMPDependClause *CreateEmpty(const ASTContext &C, unsigned 
> N);
> +  /// \param NumLoops Number of loops that is associated with this 
> depend
> +  /// clause.
> +  static OMPDependClause *CreateEmpty(const ASTContext &C, unsigned N,
> +                                      unsigned NumLoops);
> 
>    /// Get dependency type.
>    OpenMPDependClauseKind getDependencyKind() const { return DepKind; }
> @@ -3154,15 +3203,16 @@ public:
>    /// Get colon location.
>    SourceLocation getColonLoc() const { return ColonLoc; }
> 
> -  /// Set the loop counter value for the depend clauses with 
> 'sink|source' kind
> -  /// of dependency. Required for codegen.
> -  void setCounterValue(Expr *V);
> -
> -  /// Get the loop counter value.
> -  Expr *getCounterValue();
> +  /// Get number of loops associated with the clause.
> +  unsigned getNumLoops() const { return NumLoops; }
> 
> -  /// Get the loop counter value.
> -  const Expr *getCounterValue() const;
> +  /// Set the loop data for the depend clauses with 'sink|source' kind 
> of
> +  /// dependency.
> +  void setLoopData(unsigned NumLoop, Expr *Cnt);
> +
> +  /// Get the loop data.
> +  Expr *getLoopData(unsigned NumLoop);
> +  const Expr *getLoopData(unsigned NumLoop) const;
> 
>    child_range children() {
>      return child_range(reinterpret_cast<Stmt **>(varlist_begin()),
> 
> Modified: cfe/trunk/lib/AST/OpenMPClause.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/OpenMPClause.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/OpenMPClause.cpp (original)
> +++ cfe/trunk/lib/AST/OpenMPClause.cpp Mon Aug 13 12:04:24 2018
> @@ -181,6 +181,57 @@ const OMPClauseWithPostUpdate *OMPClause
>    return nullptr;
>  }
> 
> +OMPOrderedClause *OMPOrderedClause::Create(const ASTContext &C, Expr 
> *Num,
> +                                           unsigned NumLoops,
> +                                           SourceLocation StartLoc,
> +                                           SourceLocation LParenLoc,
> +                                           SourceLocation EndLoc) {
> +  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(2 * NumLoops));
> +  auto *Clause =
> +      new (Mem) OMPOrderedClause(Num, NumLoops, StartLoc, LParenLoc, 
> EndLoc);
> +  for (unsigned I = 0; I < NumLoops; ++I) {
> +    Clause->setLoopNumIterations(I, nullptr);
> +    Clause->setLoopCounter(I, nullptr);
> +  }
> +  return Clause;
> +}
> +
> +OMPOrderedClause *OMPOrderedClause::CreateEmpty(const ASTContext &C,
> +                                                unsigned NumLoops) {
> +  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(2 * NumLoops));
> +  auto *Clause = new (Mem) OMPOrderedClause(NumLoops);
> +  for (unsigned I = 0; I < NumLoops; ++I) {
> +    Clause->setLoopNumIterations(I, nullptr);
> +    Clause->setLoopCounter(I, nullptr);
> +  }
> +  return Clause;
> +}
> +
> +void OMPOrderedClause::setLoopNumIterations(unsigned NumLoop,
> +                                            Expr *NumIterations) {
> +  assert(NumLoop < NumberOfLoops && "out of loops number.");
> +  getTrailingObjects<Expr *>()[NumLoop] = NumIterations;
> +}
> +
> +ArrayRef<Expr *> OMPOrderedClause::getLoopNumIterations() const {
> +  return llvm::makeArrayRef(getTrailingObjects<Expr *>(), 
> NumberOfLoops);
> +}
> +
> +void OMPOrderedClause::setLoopCounter(unsigned NumLoop, Expr *Counter) 
> {
> +  assert(NumLoop < NumberOfLoops && "out of loops number.");
> +  getTrailingObjects<Expr *>()[NumberOfLoops + NumLoop] = Counter;
> +}
> +
> +Expr *OMPOrderedClause::getLoopCunter(unsigned NumLoop) {
> +  assert(NumLoop < NumberOfLoops && "out of loops number.");
> +  return getTrailingObjects<Expr *>()[NumberOfLoops + NumLoop];
> +}
> +
> +const Expr *OMPOrderedClause::getLoopCunter(unsigned NumLoop) const {
> +  assert(NumLoop < NumberOfLoops && "out of loops number.");
> +  return getTrailingObjects<Expr *>()[NumberOfLoops + NumLoop];
> +}
> +
>  void OMPPrivateClause::setPrivateCopies(ArrayRef<Expr *> VL) {
>    assert(VL.size() == varlist_size() &&
>           "Number of private copies is not the same as the
> preallocated buffer");
> @@ -653,44 +704,58 @@ OMPFlushClause *OMPFlushClause::CreateEm
>    return new (Mem) OMPFlushClause(N);
>  }
> 
> -OMPDependClause *OMPDependClause::Create(
> -    const ASTContext &C, SourceLocation StartLoc, SourceLocation 
> LParenLoc,
> -    SourceLocation EndLoc, OpenMPDependClauseKind DepKind,
> -    SourceLocation DepLoc, SourceLocation ColonLoc, ArrayRef<Expr *> 
> VL) {
> -  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(VL.size() + 1));
> -  OMPDependClause *Clause =
> -      new (Mem) OMPDependClause(StartLoc, LParenLoc, EndLoc, 
> VL.size());
> +OMPDependClause *
> +OMPDependClause::Create(const ASTContext &C, SourceLocation StartLoc,
> +                        SourceLocation LParenLoc, SourceLocation 
> EndLoc,
> +                        OpenMPDependClauseKind DepKind, SourceLocation 
> DepLoc,
> +                        SourceLocation ColonLoc, ArrayRef<Expr *> VL,
> +                        unsigned NumLoops) {
> +  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(VL.size() + 
> NumLoops));
> +  OMPDependClause *Clause = new (Mem)
> +      OMPDependClause(StartLoc, LParenLoc, EndLoc, VL.size(), 
> NumLoops);
>    Clause->setVarRefs(VL);
>    Clause->setDependencyKind(DepKind);
>    Clause->setDependencyLoc(DepLoc);
>    Clause->setColonLoc(ColonLoc);
> -  Clause->setCounterValue(nullptr);
> +  for (unsigned I = 0 ; I < NumLoops; ++I)
> +    Clause->setLoopData(I, nullptr);
>    return Clause;
>  }
> 
> -OMPDependClause *OMPDependClause::CreateEmpty(const ASTContext &C,
> unsigned N) {
> -  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(N + 1));
> -  return new (Mem) OMPDependClause(N);
> -}
> -
> -void OMPDependClause::setCounterValue(Expr *V) {
> -  assert(getDependencyKind() == OMPC_DEPEND_sink ||
> -         getDependencyKind() == OMPC_DEPEND_source || V == nullptr);
> -  *getVarRefs().end() = V;
> -}
> -
> -const Expr *OMPDependClause::getCounterValue() const {
> -  auto *V = *getVarRefs().end();
> -  assert(getDependencyKind() == OMPC_DEPEND_sink ||
> -         getDependencyKind() == OMPC_DEPEND_source || V == nullptr);
> -  return V;
> -}
> -
> -Expr *OMPDependClause::getCounterValue() {
> -  auto *V = *getVarRefs().end();
> -  assert(getDependencyKind() == OMPC_DEPEND_sink ||
> -         getDependencyKind() == OMPC_DEPEND_source || V == nullptr);
> -  return V;
> +OMPDependClause *OMPDependClause::CreateEmpty(const ASTContext &C, 
> unsigned N,
> +                                              unsigned NumLoops) {
> +  void *Mem = C.Allocate(totalSizeToAlloc<Expr *>(N + NumLoops));
> +  return new (Mem) OMPDependClause(N, NumLoops);
> +}
> +
> +void OMPDependClause::setLoopData(unsigned NumLoop, Expr *Cnt) {
> +  assert((getDependencyKind() == OMPC_DEPEND_sink ||
> +          getDependencyKind() == OMPC_DEPEND_source) &&
> +         NumLoop < NumLoops &&
> +         "Expected sink or source depend + loop index must be less 
> number of "
> +         "loops.");
> +  auto It = std::next(getVarRefs().end(), NumLoop);
> +  *It = Cnt;
> +}
> +
> +Expr *OMPDependClause::getLoopData(unsigned NumLoop) {
> +  assert((getDependencyKind() == OMPC_DEPEND_sink ||
> +          getDependencyKind() == OMPC_DEPEND_source) &&
> +         NumLoop < NumLoops &&
> +         "Expected sink or source depend + loop index must be less 
> number of "
> +         "loops.");
> +  auto It = std::next(getVarRefs().end(), NumLoop);
> +  return *It;
> +}
> +
> +const Expr *OMPDependClause::getLoopData(unsigned NumLoop) const {
> +  assert((getDependencyKind() == OMPC_DEPEND_sink ||
> +          getDependencyKind() == OMPC_DEPEND_source) &&
> +         NumLoop < NumLoops &&
> +         "Expected sink or source depend + loop index must be less 
> number of "
> +         "loops.");
> +  auto It = std::next(getVarRefs().end(), NumLoop);
> +  return *It;
>  }
> 
>  unsigned OMPClauseMappableExprCommon::getComponentsTotalNumber(
> 
> Modified: cfe/trunk/lib/CodeGen/CGOpenMPRuntime.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGOpenMPRuntime.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGOpenMPRuntime.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGOpenMPRuntime.cpp Mon Aug 13 12:04:24 2018
> @@ -8811,7 +8811,8 @@ public:
>  } // namespace
> 
>  void CGOpenMPRuntime::emitDoacrossInit(CodeGenFunction &CGF,
> -                                       const OMPLoopDirective &D) {
> +                                       const OMPLoopDirective &D,
> +                                       ArrayRef<Expr *> NumIterations) 
> {
>    if (!CGF.HaveInsertPoint())
>      return;
> 
> @@ -8834,32 +8835,45 @@ void CGOpenMPRuntime::emitDoacrossInit(C
>    } else {
>      RD = cast<RecordDecl>(KmpDimTy->getAsTagDecl());
>    }
> +  llvm::APInt Size(/*numBits=*/32, NumIterations.size());
> +  QualType ArrayTy =
> +      C.getConstantArrayType(KmpDimTy, Size, ArrayType::Normal, 0);
> 
> -  Address DimsAddr = CGF.CreateMemTemp(KmpDimTy, "dims");
> -  CGF.EmitNullInitialization(DimsAddr, KmpDimTy);
> +  Address DimsAddr = CGF.CreateMemTemp(ArrayTy, "dims");
> +  CGF.EmitNullInitialization(DimsAddr, ArrayTy);
>    enum { LowerFD = 0, UpperFD, StrideFD };
>    // Fill dims with data.
> -  LValue DimsLVal = CGF.MakeAddrLValue(DimsAddr, KmpDimTy);
> -  // dims.upper = num_iterations;
> -  LValue UpperLVal =
> -      CGF.EmitLValueForField(DimsLVal, *std::next(RD->field_begin(), 
> UpperFD));
> -  llvm::Value *NumIterVal = CGF.EmitScalarConversion(
> -      CGF.EmitScalarExpr(D.getNumIterations()),
> D.getNumIterations()->getType(),
> -      Int64Ty, D.getNumIterations()->getExprLoc());
> -  CGF.EmitStoreOfScalar(NumIterVal, UpperLVal);
> -  // dims.stride = 1;
> -  LValue StrideLVal =
> -      CGF.EmitLValueForField(DimsLVal, *std::next(RD->field_begin(),
> StrideFD));
> -  CGF.EmitStoreOfScalar(llvm::ConstantInt::getSigned(CGM.Int64Ty, 
> /*V=*/1),
> -                        StrideLVal);
> +  for (unsigned I = 0, E = NumIterations.size(); I < E; ++I) {
> +    LValue DimsLVal =
> +        CGF.MakeAddrLValue(CGF.Builder.CreateConstArrayGEP(
> +                               DimsAddr, I, 
> C.getTypeSizeInChars(KmpDimTy)),
> +                           KmpDimTy);
> +    // dims.upper = num_iterations;
> +    LValue UpperLVal = CGF.EmitLValueForField(
> +        DimsLVal, *std::next(RD->field_begin(), UpperFD));
> +    llvm::Value *NumIterVal =
> +        CGF.EmitScalarConversion(CGF.EmitScalarExpr(NumIterations[I]),
> +                                 D.getNumIterations()->getType(), 
> Int64Ty,
> +                                 D.getNumIterations()->getExprLoc());
> +    CGF.EmitStoreOfScalar(NumIterVal, UpperLVal);
> +    // dims.stride = 1;
> +    LValue StrideLVal = CGF.EmitLValueForField(
> +        DimsLVal, *std::next(RD->field_begin(), StrideFD));
> +    CGF.EmitStoreOfScalar(llvm::ConstantInt::getSigned(CGM.Int64Ty, 
> /*V=*/1),
> +                          StrideLVal);
> +  }
> 
>    // Build call void __kmpc_doacross_init(ident_t *loc, kmp_int32 
> gtid,
>    // kmp_int32 num_dims, struct kmp_dim * dims);
> -  llvm::Value *Args[] = {emitUpdateLocation(CGF, D.getBeginLoc()),
> -                         getThreadID(CGF, D.getBeginLoc()),
> -                         llvm::ConstantInt::getSigned(CGM.Int32Ty, 1),
> -                         
> CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
> -                             DimsAddr.getPointer(), CGM.VoidPtrTy)};
> +  llvm::Value *Args[] = {
> +      emitUpdateLocation(CGF, D.getBeginLoc()),
> +      getThreadID(CGF, D.getBeginLoc()),
> +      llvm::ConstantInt::getSigned(CGM.Int32Ty, NumIterations.size()),
> +      CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(
> +          CGF.Builder
> +              .CreateConstArrayGEP(DimsAddr, 0, 
> C.getTypeSizeInChars(KmpDimTy))
> +              .getPointer(),
> +          CGM.VoidPtrTy)};
> 
>    llvm::Value *RTLFn = 
> createRuntimeFunction(OMPRTL__kmpc_doacross_init);
>    CGF.EmitRuntimeCall(RTLFn, Args);
> @@ -8874,16 +8888,29 @@ void CGOpenMPRuntime::emitDoacrossOrdere
>                                            const OMPDependClause *C) {
>    QualType Int64Ty =
>        CGM.getContext().getIntTypeForBitwidth(/*DestWidth=*/64, 
> /*Signed=*/1);
> -  const Expr *CounterVal = C->getCounterValue();
> -  assert(CounterVal);
> -  llvm::Value *CntVal =
> CGF.EmitScalarConversion(CGF.EmitScalarExpr(CounterVal),
> -
> CounterVal->getType(), Int64Ty,
> -                                                 
> CounterVal->getExprLoc());
> -  Address CntAddr = CGF.CreateMemTemp(Int64Ty, ".cnt.addr");
> -  CGF.EmitStoreOfScalar(CntVal, CntAddr, /*Volatile=*/false, Int64Ty);
> -  llvm::Value *Args[] = {emitUpdateLocation(CGF, C->getBeginLoc()),
> -                         getThreadID(CGF, C->getBeginLoc()),
> -                         CntAddr.getPointer()};
> +  llvm::APInt Size(/*numBits=*/32, C->getNumLoops());
> +  QualType ArrayTy = CGM.getContext().getConstantArrayType(
> +      Int64Ty, Size, ArrayType::Normal, 0);
> +  Address CntAddr = CGF.CreateMemTemp(ArrayTy, ".cnt.addr");
> +  for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I) {
> +    const Expr *CounterVal = C->getLoopData(I);
> +    assert(CounterVal);
> +    llvm::Value *CntVal = CGF.EmitScalarConversion(
> +        CGF.EmitScalarExpr(CounterVal), CounterVal->getType(), 
> Int64Ty,
> +        CounterVal->getExprLoc());
> +    CGF.EmitStoreOfScalar(
> +        CntVal,
> +        CGF.Builder.CreateConstArrayGEP(
> +            CntAddr, I, CGM.getContext().getTypeSizeInChars(Int64Ty)),
> +        /*Volatile=*/false, Int64Ty);
> +  }
> +  llvm::Value *Args[] = {
> +      emitUpdateLocation(CGF, C->getBeginLoc()),
> +      getThreadID(CGF, C->getBeginLoc()),
> +      CGF.Builder
> +          .CreateConstArrayGEP(CntAddr, 0,
> +                               
> CGM.getContext().getTypeSizeInChars(Int64Ty))
> +          .getPointer()};
>    llvm::Value *RTLFn;
>    if (C->getDependencyKind() == OMPC_DEPEND_source) {
>      RTLFn = createRuntimeFunction(OMPRTL__kmpc_doacross_post);
> @@ -9198,7 +9225,8 @@ void CGOpenMPSIMDRuntime::emitTargetData
>  }
> 
>  void CGOpenMPSIMDRuntime::emitDoacrossInit(CodeGenFunction &CGF,
> -                                           const OMPLoopDirective &D) 
> {
> +                                           const OMPLoopDirective &D,
> +                                           ArrayRef<Expr *> 
> NumIterations) {
>    llvm_unreachable("Not supported in SIMD-only mode");
>  }
> 
> 
> Modified: cfe/trunk/lib/CodeGen/CGOpenMPRuntime.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGOpenMPRuntime.h?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGOpenMPRuntime.h (original)
> +++ cfe/trunk/lib/CodeGen/CGOpenMPRuntime.h Mon Aug 13 12:04:24 2018
> @@ -1469,8 +1469,8 @@ public:
> 
>    /// Emit initialization for doacross loop nesting support.
>    /// \param D Loop-based construct used in doacross nesting 
> construct.
> -  virtual void emitDoacrossInit(CodeGenFunction &CGF,
> -                                const OMPLoopDirective &D);
> +  virtual void emitDoacrossInit(CodeGenFunction &CGF, const
> OMPLoopDirective &D,
> +                                ArrayRef<Expr *> NumIterations);
> 
>    /// Emit code for doacross ordered directive with 'depend' clause.
>    /// \param C 'depend' clause with 'sink|source' dependency kind.
> @@ -2057,8 +2057,8 @@ public:
> 
>    /// Emit initialization for doacross loop nesting support.
>    /// \param D Loop-based construct used in doacross nesting 
> construct.
> -  void emitDoacrossInit(CodeGenFunction &CGF,
> -                        const OMPLoopDirective &D) override;
> +  void emitDoacrossInit(CodeGenFunction &CGF, const OMPLoopDirective 
> &D,
> +                        ArrayRef<Expr *> NumIterations) override;
> 
>    /// Emit code for doacross ordered directive with 'depend' clause.
>    /// \param C 'depend' clause with 'sink|source' dependency kind.
> 
> Modified: cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGStmtOpenMP.cpp Mon Aug 13 12:04:24 2018
> @@ -1509,6 +1509,23 @@ void CodeGenFunction::EmitOMPPrivateLoop
>      }
>      ++I;
>    }
> +  // Privatize extra loop counters used in loops for ordered(n) 
> clauses.
> +  for (const auto *C : S.getClausesOfKind<OMPOrderedClause>()) {
> +    if (!C->getNumForLoops())
> +      continue;
> +    for (unsigned I = S.getCollapsedNumber(),
> +                  E = C->getLoopNumIterations().size();
> +         I < E; ++I) {
> +      const auto *DRE = cast<DeclRefExpr>(C->getLoopCunter(I));
> +      const auto *VD = cast<VarDecl>(DRE->getDecl());
> +      // Override only those variables that are really emitted 
> already.
> +      if (LocalDeclMap.count(VD)) {
> +        (void)LoopScope.addPrivate(VD, [this, DRE, VD]() {
> +          return CreateMemTemp(DRE->getType(), VD->getName());
> +        });
> +      }
> +    }
> +  }
>  }
> 
>  static void emitPreCond(CodeGenFunction &CGF, const OMPLoopDirective 
> &S,
> @@ -2244,7 +2261,7 @@ bool CodeGenFunction::EmitOMPWorksharing
>      bool Ordered = false;
>      if (const auto *OrderedClause = 
> S.getSingleClause<OMPOrderedClause>()) {
>        if (OrderedClause->getNumForLoops())
> -        RT.emitDoacrossInit(*this, S);
> +        RT.emitDoacrossInit(*this, S, 
> OrderedClause->getLoopNumIterations());
>        else
>          Ordered = true;
>      }
> @@ -4942,6 +4959,20 @@ void CodeGenFunction::EmitSimpleOMPExecu
>                CGF.EmitVarDecl(*VD);
>            }
>          }
> +        for (const auto *C : D.getClausesOfKind<OMPOrderedClause>()) {
> +          if (!C->getNumForLoops())
> +            continue;
> +          for (unsigned I = LD->getCollapsedNumber(),
> +                        E = C->getLoopNumIterations().size();
> +               I < E; ++I) {
> +            if (const auto *VD = dyn_cast<OMPCapturedExprDecl>(
> +                    
> cast<DeclRefExpr>(C->getLoopCunter(I))->getDecl())) {
> +              // Emit only those that were not explicitly referenced
> in clauses.
> +              if (!CGF.LocalDeclMap.count(VD))
> +                CGF.EmitVarDecl(*VD);
> +            }
> +          }
> +        }
>        }
>        CGF.EmitStmt(D.getInnermostCapturedStmt()->getCapturedStmt());
>      }
> 
> Modified: cfe/trunk/lib/Sema/SemaOpenMP.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaOpenMP.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Sema/SemaOpenMP.cpp (original)
> +++ cfe/trunk/lib/Sema/SemaOpenMP.cpp Mon Aug 13 12:04:24 2018
> @@ -73,6 +73,8 @@ public:
>    };
>    using OperatorOffsetTy =
>        llvm::SmallVector<std::pair<Expr *, OverloadedOperatorKind>, 4>;
> +  using DoacrossDependMapTy =
> +      llvm::DenseMap<OMPDependClause *, OperatorOffsetTy>;
> 
>  private:
>    struct DSAInfo {
> @@ -97,8 +99,6 @@ private:
>        llvm::DenseMap<const ValueDecl *, MappedExprComponentTy>;
>    using CriticalsWithHintsTy =
>        llvm::StringMap<std::pair<const OMPCriticalDirective *, 
> llvm::APSInt>>;
> -  using DoacrossDependMapTy =
> -      llvm::DenseMap<OMPDependClause *, OperatorOffsetTy>;
>    struct ReductionData {
>      using BOKPtrType = llvm::PointerEmbeddedInt<BinaryOperatorKind, 
> 16>;
>      SourceRange ReductionRange;
> @@ -137,7 +137,7 @@ private:
>      /// first argument (Expr *) contains optional argument of the
>      /// 'ordered' clause, the second one is true if the regions has 
> 'ordered'
>      /// clause, false otherwise.
> -    llvm::PointerIntPair<const Expr *, 1, bool> OrderedRegion;
> +    llvm::Optional<std::pair<const Expr *, OMPOrderedClause *>> 
> OrderedRegion;
>      bool NowaitRegion = false;
>      bool CancelRegion = false;
>      unsigned AssociatedLoops = 1;
> @@ -398,23 +398,42 @@ public:
>    }
> 
>    /// Marks current region as ordered (it has an 'ordered' clause).
> -  void setOrderedRegion(bool IsOrdered, const Expr *Param) {
> +  void setOrderedRegion(bool IsOrdered, const Expr *Param,
> +                        OMPOrderedClause *Clause) {
>      assert(!isStackEmpty());
> -    Stack.back().first.back().OrderedRegion.setInt(IsOrdered);
> -    Stack.back().first.back().OrderedRegion.setPointer(Param);
> +    if (IsOrdered)
> +      Stack.back().first.back().OrderedRegion.emplace(Param, Clause);
> +    else
> +      Stack.back().first.back().OrderedRegion.reset();
> +  }
> +  /// Returns true, if region is ordered (has associated 'ordered' 
> clause),
> +  /// false - otherwise.
> +  bool isOrderedRegion() const {
> +    if (isStackEmpty())
> +      return false;
> +    return Stack.back().first.rbegin()->OrderedRegion.hasValue();
> +  }
> +  /// Returns optional parameter for the ordered region.
> +  std::pair<const Expr *, OMPOrderedClause *> getOrderedRegionParam() 
> const {
> +    if (isStackEmpty() ||
> +        !Stack.back().first.rbegin()->OrderedRegion.hasValue())
> +      return std::make_pair(nullptr, nullptr);
> +    return Stack.back().first.rbegin()->OrderedRegion.getValue();
>    }
>    /// Returns true, if parent region is ordered (has associated
>    /// 'ordered' clause), false - otherwise.
>    bool isParentOrderedRegion() const {
>      if (isStackEmpty() || Stack.back().first.size() == 1)
>        return false;
> -    return 
> std::next(Stack.back().first.rbegin())->OrderedRegion.getInt();
> +    return 
> std::next(Stack.back().first.rbegin())->OrderedRegion.hasValue();
>    }
>    /// Returns optional parameter for the ordered region.
> -  const Expr *getParentOrderedRegionParam() const {
> -    if (isStackEmpty() || Stack.back().first.size() == 1)
> -      return nullptr;
> -    return 
> std::next(Stack.back().first.rbegin())->OrderedRegion.getPointer();
> +  std::pair<const Expr *, OMPOrderedClause *>
> +  getParentOrderedRegionParam() const {
> +    if (isStackEmpty() || Stack.back().first.size() == 1 ||
> +        
> !std::next(Stack.back().first.rbegin())->OrderedRegion.hasValue())
> +      return std::make_pair(nullptr, nullptr);
> +    return 
> std::next(Stack.back().first.rbegin())->OrderedRegion.getValue();
>    }
>    /// Marks current region as nowait (it has a 'nowait' clause).
>    void setNowaitRegion(bool IsNowait = true) {
> @@ -3745,6 +3764,13 @@ public:
>    Expr *buildCounterInit() const;
>    /// Build step of the counter be used for codegen.
>    Expr *buildCounterStep() const;
> +  /// Build loop data with counter value for depend clauses in ordered
> +  /// directives.
> +  Expr *
> +  buildOrderedLoopData(Scope *S, Expr *Counter,
> +                       llvm::MapVector<const Expr *, DeclRefExpr *> 
> &Captures,
> +                       SourceLocation Loc, Expr *Inc = nullptr,
> +                       OverloadedOperatorKind OOK = OO_Amp);
>    /// Return true if any expression is dependent.
>    bool dependent() const;
> 
> @@ -3909,7 +3935,12 @@ bool OpenMPIterationSpaceChecker::checkA
>              SemaRef.Diag(S->getBeginLoc(),
>                           diag::ext_omp_loop_not_canonical_init)
>                  << S->getSourceRange();
> -          return setLCDeclAndLB(Var, nullptr, Var->getInit());
> +          return setLCDeclAndLB(
> +              Var,
> +              buildDeclRefExpr(SemaRef, Var,
> +                               Var->getType().getNonReferenceType(),
> +                               DS->getBeginLoc()),
> +              Var->getInit());
>          }
>        }
>      }
> @@ -4271,7 +4302,8 @@ Expr *OpenMPIterationSpaceChecker::build
> 
>  /// Build reference expression to the counter be used for codegen.
>  DeclRefExpr *OpenMPIterationSpaceChecker::buildCounterVar(
> -    llvm::MapVector<const Expr *, DeclRefExpr *> &Captures,
> DSAStackTy &DSA) const {
> +    llvm::MapVector<const Expr *, DeclRefExpr *> &Captures,
> +    DSAStackTy &DSA) const {
>    auto *VD = dyn_cast<VarDecl>(LCDecl);
>    if (!VD) {
>      VD = SemaRef.isOpenMPCapturedDecl(LCDecl);
> @@ -4311,6 +4343,63 @@ Expr *OpenMPIterationSpaceChecker::build
>  /// Build step of the counter be used for codegen.
>  Expr *OpenMPIterationSpaceChecker::buildCounterStep() const { return 
> Step; }
> 
> +Expr *OpenMPIterationSpaceChecker::buildOrderedLoopData(
> +    Scope *S, Expr *Counter,
> +    llvm::MapVector<const Expr *, DeclRefExpr *> &Captures, 
> SourceLocation Loc,
> +    Expr *Inc, OverloadedOperatorKind OOK) {
> +  Expr *Cnt = SemaRef.DefaultLvalueConversion(Counter).get();
> +  if (!Cnt)
> +    return nullptr;
> +  if (Inc) {
> +    assert((OOK == OO_Plus || OOK == OO_Minus) &&
> +           "Expected only + or - operations for depend clauses.");
> +    BinaryOperatorKind BOK = (OOK == OO_Plus) ? BO_Add : BO_Sub;
> +    Cnt = SemaRef.BuildBinOp(S, Loc, BOK, Cnt, Inc).get();
> +    if (!Cnt)
> +      return nullptr;
> +  }
> +  ExprResult Diff;
> +  QualType VarType = LCDecl->getType().getNonReferenceType();
> +  if (VarType->isIntegerType() || VarType->isPointerType() ||
> +      SemaRef.getLangOpts().CPlusPlus) {
> +    // Upper - Lower
> +    Expr *Upper =
> +        TestIsLessOp ? Cnt : tryBuildCapture(SemaRef, UB, 
> Captures).get();
> +    Expr *Lower =
> +        TestIsLessOp ? tryBuildCapture(SemaRef, LB, Captures).get() : 
> Cnt;
> +    if (!Upper || !Lower)
> +      return nullptr;
> +
> +    Diff = SemaRef.BuildBinOp(S, DefaultLoc, BO_Sub, Upper, Lower);
> +
> +    if (!Diff.isUsable() && VarType->getAsCXXRecordDecl()) {
> +      // BuildBinOp already emitted error, this one is to point user 
> to upper
> +      // and lower bound, and to tell what is passed to 'operator-'.
> +      SemaRef.Diag(Upper->getBeginLoc(), diag::err_omp_loop_diff_cxx)
> +          << Upper->getSourceRange() << Lower->getSourceRange();
> +      return nullptr;
> +    }
> +  }
> +
> +  if (!Diff.isUsable())
> +    return nullptr;
> +
> +  // Parentheses (for dumping/debugging purposes only).
> +  Diff = SemaRef.ActOnParenExpr(DefaultLoc, DefaultLoc, Diff.get());
> +  if (!Diff.isUsable())
> +    return nullptr;
> +
> +  ExprResult NewStep = tryBuildCapture(SemaRef, Step, Captures);
> +  if (!NewStep.isUsable())
> +    return nullptr;
> +  // (Upper - Lower) / Step
> +  Diff = SemaRef.BuildBinOp(S, DefaultLoc, BO_Div, Diff.get(), 
> NewStep.get());
> +  if (!Diff.isUsable())
> +    return nullptr;
> +
> +  return Diff.get();
> +}
> +
>  /// Iteration space of a single for loop.
>  struct LoopIterationSpace final {
>    /// Condition of the loop.
> @@ -4370,7 +4459,8 @@ void Sema::ActOnOpenMPLoopInitialization
>  static bool checkOpenMPIterationSpace(
>      OpenMPDirectiveKind DKind, Stmt *S, Sema &SemaRef, DSAStackTy 
> &DSA,
>      unsigned CurrentNestedLoopCount, unsigned NestedLoopCount,
> -    Expr *CollapseLoopCountExpr, Expr *OrderedLoopCountExpr,
> +    unsigned TotalNestedLoopCount, Expr *CollapseLoopCountExpr,
> +    Expr *OrderedLoopCountExpr,
>      Sema::VarsWithInheritedDSAType &VarsWithImplicitDSA,
>      LoopIterationSpace &ResultIterSpace,
>      llvm::MapVector<const Expr *, DeclRefExpr *> &Captures) {
> @@ -4380,9 +4470,9 @@ static bool checkOpenMPIterationSpace(
>    if (!For) {
>      SemaRef.Diag(S->getBeginLoc(), diag::err_omp_not_for)
>          << (CollapseLoopCountExpr != nullptr || OrderedLoopCountExpr
> != nullptr)
> -        << getOpenMPDirectiveName(DKind) << NestedLoopCount
> +        << getOpenMPDirectiveName(DKind) << TotalNestedLoopCount
>          << (CurrentNestedLoopCount > 0) << CurrentNestedLoopCount;
> -    if (NestedLoopCount > 1) {
> +    if (TotalNestedLoopCount > 1) {
>        if (CollapseLoopCountExpr && OrderedLoopCountExpr)
>          SemaRef.Diag(DSA.getConstructLoc(),
>                       diag::note_omp_collapse_ordered_expr)
> @@ -4515,6 +4605,41 @@ static bool checkOpenMPIterationSpace(
>                  ResultIterSpace.PrivateCounterVar == nullptr ||
>                  ResultIterSpace.CounterInit == nullptr ||
>                  ResultIterSpace.CounterStep == nullptr);
> +  if (!HasErrors && DSA.isOrderedRegion()) {
> +    if (DSA.getOrderedRegionParam().second->getNumForLoops()) {
> +      if (CurrentNestedLoopCount <
> +          
> DSA.getOrderedRegionParam().second->getLoopNumIterations().size()) {
> +        DSA.getOrderedRegionParam().second->setLoopNumIterations(
> +            CurrentNestedLoopCount, ResultIterSpace.NumIterations);
> +        DSA.getOrderedRegionParam().second->setLoopCounter(
> +            CurrentNestedLoopCount, ResultIterSpace.CounterVar);
> +      }
> +    }
> +    for (auto &Pair : DSA.getDoacrossDependClauses()) {
> +      if (CurrentNestedLoopCount >= Pair.first->getNumLoops()) {
> +        // Erroneous case - clause has some problems.
> +        continue;
> +      }
> +      if (Pair.first->getDependencyKind() == OMPC_DEPEND_sink &&
> +          Pair.second.size() <= CurrentNestedLoopCount) {
> +        // Erroneous case - clause has some problems.
> +        Pair.first->setLoopData(CurrentNestedLoopCount, nullptr);
> +        continue;
> +      }
> +      Expr *CntValue;
> +      if (Pair.first->getDependencyKind() == OMPC_DEPEND_source)
> +        CntValue = ISC.buildOrderedLoopData(
> +            DSA.getCurScope(), ResultIterSpace.CounterVar, Captures,
> +            Pair.first->getDependencyLoc());
> +      else
> +        CntValue = ISC.buildOrderedLoopData(
> +            DSA.getCurScope(), ResultIterSpace.CounterVar, Captures,
> +            Pair.first->getDependencyLoc(),
> +            Pair.second[CurrentNestedLoopCount].first,
> +            Pair.second[CurrentNestedLoopCount].second);
> +      Pair.first->setLoopData(CurrentNestedLoopCount, CntValue);
> +    }
> +  }
> 
>    return HasErrors;
>  }
> @@ -4700,6 +4825,7 @@ checkOpenMPLoop(OpenMPDirectiveKind DKin
>      if (CollapseLoopCountExpr->EvaluateAsInt(Result, 
> SemaRef.getASTContext()))
>        NestedLoopCount = Result.getLimitedValue();
>    }
> +  unsigned OrderedLoopCount = 1;
>    if (OrderedLoopCountExpr) {
>      // Found 'ordered' clause - calculate collapse number.
>      llvm::APSInt Result;
> @@ -4712,21 +4838,43 @@ checkOpenMPLoop(OpenMPDirectiveKind DKin
>                       diag::note_collapse_loop_count)
>              << CollapseLoopCountExpr->getSourceRange();
>        }
> -      NestedLoopCount = Result.getLimitedValue();
> +      OrderedLoopCount = Result.getLimitedValue();
>      }
>    }
>    // This is helper routine for loop directives (e.g., 'for', 'simd',
>    // 'for simd', etc.).
>    llvm::MapVector<const Expr *, DeclRefExpr *> Captures;
>    SmallVector<LoopIterationSpace, 4> IterSpaces;
> -  IterSpaces.resize(NestedLoopCount);
> +  IterSpaces.resize(std::max(OrderedLoopCount, NestedLoopCount));
>    Stmt *CurStmt = AStmt->IgnoreContainers(/* IgnoreCaptured */ true);
>    for (unsigned Cnt = 0; Cnt < NestedLoopCount; ++Cnt) {
> -    if (checkOpenMPIterationSpace(DKind, CurStmt, SemaRef, DSA, Cnt,
> -                                  NestedLoopCount, 
> CollapseLoopCountExpr,
> -                                  OrderedLoopCountExpr, 
> VarsWithImplicitDSA,
> -                                  IterSpaces[Cnt], Captures))
> +    if (checkOpenMPIterationSpace(
> +            DKind, CurStmt, SemaRef, DSA, Cnt, NestedLoopCount,
> +            std::max(OrderedLoopCount, NestedLoopCount), 
> CollapseLoopCountExpr,
> +            OrderedLoopCountExpr, VarsWithImplicitDSA, 
> IterSpaces[Cnt],
> +            Captures))
> +      return 0;
> +    // Move on to the next nested for loop, or to the loop body.
> +    // OpenMP [2.8.1, simd construct, Restrictions]
> +    // All loops associated with the construct must be perfectly 
> nested; that
> +    // is, there must be no intervening code nor any OpenMP directive 
> between
> +    // any two loops.
> +    CurStmt = cast<ForStmt>(CurStmt)->getBody()->IgnoreContainers();
> +  }
> +  for (unsigned Cnt = NestedLoopCount; Cnt < OrderedLoopCount; ++Cnt) 
> {
> +    if (checkOpenMPIterationSpace(
> +            DKind, CurStmt, SemaRef, DSA, Cnt, NestedLoopCount,
> +            std::max(OrderedLoopCount, NestedLoopCount), 
> CollapseLoopCountExpr,
> +            OrderedLoopCountExpr, VarsWithImplicitDSA, 
> IterSpaces[Cnt],
> +            Captures))
>        return 0;
> +    if (Cnt > 0 && IterSpaces[Cnt].CounterVar) {
> +      // Handle initialization of captured loop iterator variables.
> +      auto *DRE = cast<DeclRefExpr>(IterSpaces[Cnt].CounterVar);
> +      if (isa<OMPCapturedExprDecl>(DRE->getDecl())) {
> +        Captures[DRE] = DRE;
> +      }
> +    }
>      // Move on to the next nested for loop, or to the loop body.
>      // OpenMP [2.8.1, simd construct, Restrictions]
>      // All loops associated with the construct must be perfectly 
> nested; that
> @@ -5113,7 +5261,6 @@ checkOpenMPLoop(OpenMPDirectiveKind DKin
>    Built.Inits.resize(NestedLoopCount);
>    Built.Updates.resize(NestedLoopCount);
>    Built.Finals.resize(NestedLoopCount);
> -  SmallVector<Expr *, 4> LoopMultipliers;
>    {
>      ExprResult Div;
>      // Go from inner nested loop to outer.
> @@ -5183,7 +5330,6 @@ checkOpenMPLoop(OpenMPDirectiveKind DKin
>            HasErrors = true;
>            break;
>          }
> -        LoopMultipliers.push_back(Div.get());
>        }
>        if (!Update.isUsable() || !Final.isUsable()) {
>          HasErrors = true;
> @@ -5231,55 +5377,6 @@ checkOpenMPLoop(OpenMPDirectiveKind DKin
>    Built.DistCombinedFields.NLB = CombNextLB.get();
>    Built.DistCombinedFields.NUB = CombNextUB.get();
> 
> -  Expr *CounterVal = SemaRef.DefaultLvalueConversion(IV.get()).get();
> -  // Fill data for doacross depend clauses.
> -  for (const auto &Pair : DSA.getDoacrossDependClauses()) {
> -    if (Pair.first->getDependencyKind() == OMPC_DEPEND_source) {
> -      Pair.first->setCounterValue(CounterVal);
> -    } else {
> -      if (NestedLoopCount != Pair.second.size() ||
> -          NestedLoopCount != LoopMultipliers.size() + 1) {
> -        // Erroneous case - clause has some problems.
> -        Pair.first->setCounterValue(CounterVal);
> -        continue;
> -      }
> -      assert(Pair.first->getDependencyKind() == OMPC_DEPEND_sink);
> -      auto I = Pair.second.rbegin();
> -      auto IS = IterSpaces.rbegin();
> -      auto ILM = LoopMultipliers.rbegin();
> -      Expr *UpCounterVal = CounterVal;
> -      Expr *Multiplier = nullptr;
> -      for (int Cnt = NestedLoopCount - 1; Cnt >= 0; --Cnt) {
> -        if (I->first) {
> -          assert(IS->CounterStep);
> -          Expr *NormalizedOffset =
> -              SemaRef
> -                  .BuildBinOp(CurScope, I->first->getExprLoc(), 
> BO_Div,
> -                              I->first, IS->CounterStep)
> -                  .get();
> -          if (Multiplier) {
> -            NormalizedOffset =
> -                SemaRef
> -                    .BuildBinOp(CurScope, I->first->getExprLoc(), 
> BO_Mul,
> -                                NormalizedOffset, Multiplier)
> -                    .get();
> -          }
> -          assert(I->second == OO_Plus || I->second == OO_Minus);
> -          BinaryOperatorKind BOK = (I->second == OO_Plus) ? BO_Add : 
> BO_Sub;
> -          UpCounterVal = SemaRef
> -                             .BuildBinOp(CurScope, 
> I->first->getExprLoc(), BOK,
> -                                         UpCounterVal, 
> NormalizedOffset)
> -                             .get();
> -        }
> -        Multiplier = *ILM;
> -        ++I;
> -        ++IS;
> -        ++ILM;
> -      }
> -      Pair.first->setCounterValue(UpCounterVal);
> -    }
> -  }
> -
>    return NestedLoopCount;
>  }
> 
> @@ -5847,12 +5944,12 @@ StmtResult Sema::ActOnOpenMPOrderedDirec
>      Diag(DependFound->getBeginLoc(), 
> diag::err_omp_depend_clause_thread_simd)
>          << getOpenMPClauseName(TC ? TC->getClauseKind() : 
> SC->getClauseKind());
>      ErrorFound = true;
> -  } else if (DependFound && !DSAStack->getParentOrderedRegionParam()) 
> {
> +  } else if (DependFound && 
> !DSAStack->getParentOrderedRegionParam().first) {
>      Diag(DependFound->getBeginLoc(),
>           diag::err_omp_ordered_directive_without_param);
>      ErrorFound = true;
>    } else if (TC || Clauses.empty()) {
> -    if (const Expr *Param = DSAStack->getParentOrderedRegionParam()) {
> +    if (const Expr *Param = 
> DSAStack->getParentOrderedRegionParam().first) {
>        SourceLocation ErrLoc = TC ? TC->getBeginLoc() : StartLoc;
>        Diag(ErrLoc, diag::err_omp_ordered_directive_with_param)
>            << (TC != nullptr);
> @@ -8628,9 +8725,11 @@ OMPClause *Sema::ActOnOpenMPOrderedClaus
>    } else {
>      NumForLoops = nullptr;
>    }
> -  DSAStack->setOrderedRegion(/*IsOrdered=*/true, NumForLoops);
> -  return new (Context)
> -      OMPOrderedClause(NumForLoops, StartLoc, LParenLoc, EndLoc);
> +  auto *Clause = OMPOrderedClause::Create(
> +      Context, NumForLoops, NumForLoops ? 
> DSAStack->getAssociatedLoops() : 0,
> +      StartLoc, LParenLoc, EndLoc);
> +  DSAStack->setOrderedRegion(/*IsOrdered=*/true, NumForLoops, Clause);
> +  return Clause;
>  }
> 
>  OMPClause *Sema::ActOnOpenMPSimpleClause(
> @@ -11486,8 +11585,9 @@ Sema::ActOnOpenMPDependClause(OpenMPDepe
>    DSAStackTy::OperatorOffsetTy OpsOffs;
>    llvm::APSInt DepCounter(/*BitWidth=*/32);
>    llvm::APSInt TotalDepCount(/*BitWidth=*/32);
> -  if (DepKind == OMPC_DEPEND_sink) {
> -    if (const Expr *OrderedCountExpr =
> DSAStack->getParentOrderedRegionParam()) {
> +  if (DepKind == OMPC_DEPEND_sink || DepKind == OMPC_DEPEND_source) {
> +    if (const Expr *OrderedCountExpr =
> +            DSAStack->getParentOrderedRegionParam().first) {
>        TotalDepCount = 
> OrderedCountExpr->EvaluateKnownConstInt(Context);
>        TotalDepCount.setIsUnsigned(/*Val=*/true);
>      }
> @@ -11503,7 +11603,7 @@ Sema::ActOnOpenMPDependClause(OpenMPDepe
>      SourceLocation ELoc = RefExpr->getExprLoc();
>      Expr *SimpleExpr = RefExpr->IgnoreParenCasts();
>      if (DepKind == OMPC_DEPEND_sink) {
> -      if (DSAStack->getParentOrderedRegionParam() &&
> +      if (DSAStack->getParentOrderedRegionParam().first &&
>            DepCounter >= TotalDepCount) {
>          Diag(ELoc, diag::err_omp_depend_sink_unexpected_expr);
>          continue;
> @@ -11569,7 +11669,7 @@ Sema::ActOnOpenMPDependClause(OpenMPDepe
>            continue;
>        }
>        if (!CurContext->isDependentContext() &&
> -          DSAStack->getParentOrderedRegionParam() &&
> +          DSAStack->getParentOrderedRegionParam().first &&
>            DepCounter != 
> DSAStack->isParentLoopControlVariable(D).first) {
>          const ValueDecl *VD =
>              
> DSAStack->getParentLoopControlVariable(DepCounter.getZExtValue());
> @@ -11607,7 +11707,7 @@ Sema::ActOnOpenMPDependClause(OpenMPDepe
> 
>    if (!CurContext->isDependentContext() && DepKind == OMPC_DEPEND_sink 
> &&
>        TotalDepCount > VarList.size() &&
> -      DSAStack->getParentOrderedRegionParam() &&
> +      DSAStack->getParentOrderedRegionParam().first &&
>        DSAStack->getParentLoopControlVariable(VarList.size() + 1)) {
>      Diag(EndLoc, diag::err_omp_depend_sink_expected_loop_iteration)
>          << 1 << DSAStack->getParentLoopControlVariable(VarList.size() 
> + 1);
> @@ -11617,7 +11717,8 @@ Sema::ActOnOpenMPDependClause(OpenMPDepe
>      return nullptr;
> 
>    auto *C = OMPDependClause::Create(Context, StartLoc, LParenLoc, 
> EndLoc,
> -                                    DepKind, DepLoc, ColonLoc, Vars);
> +                                    DepKind, DepLoc, ColonLoc, Vars,
> +                                    TotalDepCount.getZExtValue());
>    if ((DepKind == OMPC_DEPEND_sink || DepKind == OMPC_DEPEND_source) 
> &&
>        DSAStack->isParentOrderedRegion())
>      DSAStack->addDoacrossDependClause(C, OpsOffs);
> 
> Modified: cfe/trunk/lib/Serialization/ASTReaderStmt.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTReaderStmt.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Serialization/ASTReaderStmt.cpp (original)
> +++ cfe/trunk/lib/Serialization/ASTReaderStmt.cpp Mon Aug 13 12:04:24 
> 2018
> @@ -1856,7 +1856,7 @@ OMPClause *OMPClauseReader::readClause()
>      C = new (Context) OMPScheduleClause();
>      break;
>    case OMPC_ordered:
> -    C = new (Context) OMPOrderedClause();
> +    C = OMPOrderedClause::CreateEmpty(Context, 
> Reader->Record.readInt());
>      break;
>    case OMPC_nowait:
>      C = new (Context) OMPNowaitClause();
> @@ -1927,9 +1927,12 @@ OMPClause *OMPClauseReader::readClause()
>    case OMPC_flush:
>      C = OMPFlushClause::CreateEmpty(Context, 
> Reader->Record.readInt());
>      break;
> -  case OMPC_depend:
> -    C = OMPDependClause::CreateEmpty(Context, 
> Reader->Record.readInt());
> +  case OMPC_depend: {
> +    unsigned NumVars = Reader->Record.readInt();
> +    unsigned NumLoops = Reader->Record.readInt();
> +    C = OMPDependClause::CreateEmpty(Context, NumVars, NumLoops);
>      break;
> +  }
>    case OMPC_device:
>      C = new (Context) OMPDeviceClause();
>      break;
> @@ -2087,6 +2090,10 @@ void OMPClauseReader::VisitOMPScheduleCl
> 
>  void OMPClauseReader::VisitOMPOrderedClause(OMPOrderedClause *C) {
>    C->setNumForLoops(Reader->Record.readSubExpr());
> +  for (unsigned I = 0, E = C->NumberOfLoops; I < E; ++I)
> +    C->setLoopNumIterations(I, Reader->Record.readSubExpr());
> +  for (unsigned I = 0, E = C->NumberOfLoops; I < E; ++I)
> +    C->setLoopCounter(I, Reader->Record.readSubExpr());
>    C->setLParenLoc(Reader->ReadSourceLocation());
>  }
> 
> @@ -2395,10 +2402,11 @@ void OMPClauseReader::VisitOMPDependClau
>    unsigned NumVars = C->varlist_size();
>    SmallVector<Expr *, 16> Vars;
>    Vars.reserve(NumVars);
> -  for (unsigned i = 0; i != NumVars; ++i)
> +  for (unsigned I = 0; I != NumVars; ++I)
>      Vars.push_back(Reader->Record.readSubExpr());
>    C->setVarRefs(Vars);
> -  C->setCounterValue(Reader->Record.readSubExpr());
> +  for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I)
> +    C->setLoopData(I, Reader->Record.readSubExpr());
>  }
> 
>  void OMPClauseReader::VisitOMPDeviceClause(OMPDeviceClause *C) {
> 
> Modified: cfe/trunk/lib/Serialization/ASTWriterStmt.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriterStmt.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/lib/Serialization/ASTWriterStmt.cpp (original)
> +++ cfe/trunk/lib/Serialization/ASTWriterStmt.cpp Mon Aug 13 12:04:24 
> 2018
> @@ -1898,7 +1898,12 @@ void OMPClauseWriter::VisitOMPScheduleCl
>  }
> 
>  void OMPClauseWriter::VisitOMPOrderedClause(OMPOrderedClause *C) {
> +  Record.push_back(C->getLoopNumIterations().size());
>    Record.AddStmt(C->getNumForLoops());
> +  for (Expr *NumIter : C->getLoopNumIterations())
> +    Record.AddStmt(NumIter);
> +  for (unsigned I = 0, E = C->getLoopNumIterations().size(); I <E; 
> ++I)
> +    Record.AddStmt(C->getLoopCunter(I));
>    Record.AddSourceLocation(C->getLParenLoc());
>  }
> 
> @@ -2102,13 +2107,15 @@ void OMPClauseWriter::VisitOMPFlushClaus
> 
>  void OMPClauseWriter::VisitOMPDependClause(OMPDependClause *C) {
>    Record.push_back(C->varlist_size());
> +  Record.push_back(C->getNumLoops());
>    Record.AddSourceLocation(C->getLParenLoc());
>    Record.push_back(C->getDependencyKind());
>    Record.AddSourceLocation(C->getDependencyLoc());
>    Record.AddSourceLocation(C->getColonLoc());
>    for (auto *VE : C->varlists())
>      Record.AddStmt(VE);
> -  Record.AddStmt(C->getCounterValue());
> +  for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I)
> +    Record.AddStmt(C->getLoopData(I));
>  }
> 
>  void OMPClauseWriter::VisitOMPDeviceClause(OMPDeviceClause *C) {
> 
> Modified: cfe/trunk/test/OpenMP/ordered_doacross_codegen.c
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/OpenMP/ordered_doacross_codegen.c?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/test/OpenMP/ordered_doacross_codegen.c (original)
> +++ cfe/trunk/test/OpenMP/ordered_doacross_codegen.c Mon Aug 13 
> 12:04:24 2018
> @@ -19,17 +19,19 @@ void foo();
>  // CHECK-LABEL: @main()
>  int main() {
>    int i;
> -// CHECK: [[DIMS:%.+]] = alloca [[KMP_DIM]],
> +// CHECK: [[DIMS:%.+]] = alloca [1 x [[KMP_DIM]]],
>  // CHECK: [[GTID:%.+]] = call i32 
> @__kmpc_global_thread_num([[IDENT:%.+]])
>  // CHECK: icmp
>  // CHECK-NEXT: br i1 %
> -// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIMS]] to i8*
> +// CHECK: [[CAST:%.+]] = bitcast [1 x [[KMP_DIM]]]* [[DIMS]] to i8*
>  // CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 [[CAST]], i8 0,
> i64 24, i1 false)
> -// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIMS]],
> i32 0, i32 1
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [1 x [[KMP_DIM]]], [1
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 0
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 1
>  // CHECK: store i64 %{{.+}}, i64* %
> -// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIMS]],
> i32 0, i32 2
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 2
>  // CHECK: store i64 1, i64* %
> -// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIMS]] to i8*
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [1 x [[KMP_DIM]]], [1
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 0
> +// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIM]] to i8*
>  // CHECK: call void @__kmpc_doacross_init([[IDENT]], i32 [[GTID]],
> i32 1, i8* [[CAST]])
>  // CHECK: call void @__kmpc_for_static_init_4(
>  #pragma omp for ordered(1)
> @@ -37,18 +39,26 @@ int main() {
>      a[i] = b[i] + 1;
>      foo();
>  // CHECK: call void [[FOO:.+]](
> -// CHECK: load i32, i32* [[CNT:%.+]],
> +// CHECK: load i32, i32* [[I:%.+]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
>  // CHECK-NEXT: sext i32 %{{.+}} to i64
> -// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT:%.+]], i64 0, i64 0
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_post([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
>  #pragma omp ordered depend(source)
>      c[i] = c[i] + 1;
>      foo();
>  // CHECK: call void [[FOO]]
> -// CHECK: load i32, i32* [[CNT]],
> +// CHECK: load i32, i32* [[I]],
>  // CHECK-NEXT: sub nsw i32 %{{.+}}, 2
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
>  // CHECK-NEXT: sext i32 %{{.+}} to i64
> -// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT:%.+]], i64 0, i64 0
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_wait([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
>  #pragma omp ordered depend(sink : i - 2)
>      d[i] = a[i - 2];
> 
> Modified: cfe/trunk/test/OpenMP/ordered_doacross_codegen.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/OpenMP/ordered_doacross_codegen.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/test/OpenMP/ordered_doacross_codegen.cpp (original)
> +++ cfe/trunk/test/OpenMP/ordered_doacross_codegen.cpp Mon Aug 13 
> 12:04:24 2018
> @@ -19,17 +19,19 @@ void foo();
>  // CHECK-LABEL: @main()
>  int main() {
>    int i;
> -// CHECK: [[DIMS:%.+]] = alloca [[KMP_DIM]],
> +// CHECK: [[DIMS:%.+]] = alloca [1 x [[KMP_DIM]]],
>  // CHECK: [[GTID:%.+]] = call i32 
> @__kmpc_global_thread_num([[IDENT:%.+]])
>  // CHECK: icmp
>  // CHECK-NEXT: br i1 %
> -// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIMS]] to i8*
> +// CHECK: [[CAST:%.+]] = bitcast [1 x [[KMP_DIM]]]* [[DIMS]] to i8*
>  // CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 [[CAST]], i8 0,
> i64 24, i1 false)
> -// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIMS]],
> i32 0, i32 1
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [1 x [[KMP_DIM]]], [1
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 0
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 1
>  // CHECK: store i64 %{{.+}}, i64* %
> -// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIMS]],
> i32 0, i32 2
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 2
>  // CHECK: store i64 1, i64* %
> -// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIMS]] to i8*
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [1 x [[KMP_DIM]]], [1
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 0
> +// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIM]] to i8*
>  // CHECK: call void @__kmpc_doacross_init([[IDENT]], i32 [[GTID]],
> i32 1, i8* [[CAST]])
>  // CHECK: call void @__kmpc_for_static_init_4(
>  #pragma omp for ordered(1)
> @@ -37,18 +39,26 @@ int main() {
>      a[i] = b[i] + 1;
>      foo();
>  // CHECK: invoke void [[FOO:.+]](
> -// CHECK: load i32, i32* [[CNT:%.+]],
> +// CHECK: load i32, i32* [[I:%.+]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
>  // CHECK-NEXT: sext i32 %{{.+}} to i64
> -// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT:%.+]], i64 0, i64 0
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_post([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
>  #pragma omp ordered depend(source)
>      c[i] = c[i] + 1;
>      foo();
>  // CHECK: invoke void [[FOO]]
> -// CHECK: load i32, i32* [[CNT]],
> +// CHECK: load i32, i32* [[I]],
>  // CHECK-NEXT: sub nsw i32 %{{.+}}, 2
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
>  // CHECK-NEXT: sext i32 %{{.+}} to i64
> -// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT:%.+]], i64 0, i64 0
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [1 x i64], [1 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_wait([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
>  #pragma omp ordered depend(sink : i - 2)
>      d[i] = a[i - 2];
> @@ -75,41 +85,84 @@ struct TestStruct {
>    T bar(T, T, T);
>    void baz(T, T);
>    TestStruct() {
> -// CHECK: [[CNT:%.+]] = alloca i64,
> -// CHECK: [[DIMS:%.+]] = alloca [[KMP_DIM]],
> +// CHECK: [[DIMS:%.+]] = alloca [2 x [[KMP_DIM]]],
>  // CHECK: [[GTID:%.+]] = call i32 
> @__kmpc_global_thread_num([[IDENT:%.+]])
> -// CHECK: icmp
> -// CHECK-NEXT: br i1 %
> -// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIMS]] to i8*
> -// CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 [[CAST]], i8 0,
> i64 24, i1 false)
> -// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIMS]],
> i32 0, i32 1
> +// CHECK: [[CAST:%.+]] = bitcast [2 x [[KMP_DIM]]]* [[DIMS]] to i8*
> +// CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 [[CAST]], i8 0,
> i64 48, i1 false)
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [2 x [[KMP_DIM]]], [2
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 0
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 1
> +// CHECK: store i64 10, i64* %
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 2
> +// CHECK: store i64 1, i64* %
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [2 x [[KMP_DIM]]], [2
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 1
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 1
>  // CHECK: store i64 %{{.+}}, i64* %
> -// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIMS]],
> i32 0, i32 2
> +// CHECK: getelementptr inbounds [[KMP_DIM]], [[KMP_DIM]]* [[DIM]],
> i32 0, i32 2
>  // CHECK: store i64 1, i64* %
> -// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIMS]] to i8*
> -// CHECK: call void @__kmpc_doacross_init([[IDENT]], i32 [[GTID]],
> i32 1, i8* [[CAST]])
> -// CHECK: call void @__kmpc_for_static_init_8(
> +// CHECK: [[DIM:%.+]] = getelementptr inbounds [2 x [[KMP_DIM]]], [2
> x [[KMP_DIM]]]* [[DIMS]], i64 0, i64 0
> +// CHECK: [[CAST:%.+]] = bitcast [[KMP_DIM]]* [[DIM]] to i8*
> +// CHECK: call void @__kmpc_doacross_init([[IDENT]], i32 [[GTID]],
> i32 2, i8* [[CAST]])
> +// CHECK: call void @__kmpc_for_static_init_4(
>  #pragma omp for ordered(2)
>      for (T j = 0; j < M; j++)
>        for (i = 0; i < n; i += 2) {
>          a[i][j] = foo(i, j);
>  // CHECK: invoke {{.+TestStruct.+foo}}
> -// CHECK: load i64, i64* [[CNT]],
> -// CHECK-NEXT: sub nsw i64 %{{.+}}, 1
> +// CHECK: load i32*, i32** %
> +// CHECK: load i32, i32* %
> +// CHECK: load i32, i32* %
> +// CHECK: load i32, i32* [[J:%.+]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
> +// CHECK-NEXT: sext i32 %{{.+}} to i64
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT:%.+]], i64 0, i64 0
>  // CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[I:%.+]] = load i32*, i32** [[I_REF:%.+]],
> +// CHECK-NEXT: load i32, i32* [[I]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 2
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 2
> +// CHECK-NEXT: sext i32 %{{.+}} to i64
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT]], i64 0, i64 1
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_wait([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
> -// CHECK-NEXT: load i64, i64* [[CNT]],
> -// CHECK-NEXT: load i32, i32* %
> -// CHECK-NEXT: mul nsw i32 1, %
> +// CHECK-NEXT: load i32, i32* [[J:%.+]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 1
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
>  // CHECK-NEXT: sext i32 %{{.+}} to i64
> -// CHECK-NEXT: sub nsw i64 %
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT:%.+]], i64 0, i64 0
>  // CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[I:%.+]] = load i32*, i32** [[I_REF]],
> +// CHECK-NEXT: load i32, i32* [[I]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 2
> +// CHECK-NEXT: sext i32 %{{.+}} to i64
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT]], i64 0, i64 1
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_wait([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
>  #pragma omp ordered depend(sink : j, i - 2) depend(sink : j - 1, i)
>          b[i][j] = bar(a[i][j], b[i - 1][j], b[i][j - 1]);
>  // CHECK: invoke {{.+TestStruct.+bar}}
> -// CHECK: load i64, i64* [[CNT]],
> +// CHECK: load i32*, i32** %
> +// CHECK: load i32, i32* %
> +// CHECK: load i32, i32* %
> +// CHECK: load i32, i32* [[J]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 1
> +// CHECK-NEXT: sext i32 %{{.+}} to i64
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT:%.+]], i64 0, i64 0
>  // CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP:%.+]],
> +// CHECK-NEXT: [[I:%.+]] = load i32*, i32** [[I_REF]],
> +// CHECK-NEXT: load i32, i32* [[I]],
> +// CHECK-NEXT: sub nsw i32 %{{.+}}, 0
> +// CHECK-NEXT: sdiv i32 %{{.+}}, 2
> +// CHECK-NEXT: sext i32 %{{.+}} to i64
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT]], i64 0, i64 1
> +// CHECK-NEXT: store i64 %{{.+}}, i64* [[TMP]],
> +// CHECK-NEXT: [[TMP:%.+]] = getelementptr inbounds [2 x i64], [2 x
> i64]* [[CNT]], i64 0, i64 0
>  // CHECK-NEXT: call void @__kmpc_doacross_post([[IDENT]], i32
> [[GTID]], i64* [[TMP]])
>  #pragma omp ordered depend(source)
>          baz(a[i][j], b[i][j]);
> 
> Modified: cfe/trunk/test/OpenMP/parallel_for_simd_ast_print.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/OpenMP/parallel_for_simd_ast_print.cpp?rev=339603&r1=339602&r2=339603&view=diff
> ==============================================================================
> --- cfe/trunk/test/OpenMP/parallel_for_simd_ast_print.cpp (original)
> +++ cfe/trunk/test/OpenMP/parallel_for_simd_ast_print.cpp Mon Aug 13
> 12:04:24 2018
> @@ -48,7 +48,7 @@ class S8 : public S7<S1> {
> 
>  public:
>    S8(int v) : S7<S1>(v){
> -#pragma omp parallel for simd private(a) private(this->a) 
> private(S7<S1>::a)
> +#pragma omp parallel for simd private(a) private(this->a) private(S7 
> <S1>::a)
>      for (int k = 0; k < a.a; ++k)
>        ++this->a.a;
>    }
> 
> 
> _______________________________________________
> cfe-commits mailing list
> cfe-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits


More information about the cfe-commits mailing list