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

Jonas Hahnfeld via cfe-commits cfe-commits at lists.llvm.org
Thu Aug 16 02:40:22 PDT 2018


Thanks Hans!

On 2018-08-16 11:35, Hans Wennborg wrote:
> I've gone ahead and merged it in r339851.
> 
> On Wed, Aug 15, 2018 at 3:23 PM, Alexey Bataev <a.bataev at outlook.com> 
> wrote:
>> I think it would be good to backport it. Could you do that, Jonas?
>> 
>> -------------
>> Best regards,
>> Alexey Bataev
>> 
>> 15.08.2018 5:02, Jonas Hahnfeld via cfe-commits пишет:
>> 
>> 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
>> 
>> 
>> 


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