[OpenMP][NFCI] Use the libFrontend ProcBindKind in Clang

[jdoerfert]

Summary

This removes the OpenMPProcBindClauseKind enum in favor of
llvm::omp::ProcBindKind which lives in OpenMPConstants.h and was
introduced in D70109.

No change in behavior is expected.

[JonChesterfield]

Nice cleanup, thanks

clang/include/clang/AST/OpenMPClause.h

 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/OpenMPKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/iterator.h"
 #include "llvm/ADT/iterator_range.h"
+#include "llvm/Frontend/OpenMPConstants.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/TrailingObjects.h"
 #include <cassert>
 #include <cstddef>
 #include <iterator>
 #include <utility>
 

 /// clause with kind 'master'.
 class OMPProcBindClause : public OMPClause {
   friend class OMPClauseReader;
 
   /// Location of '('.
   SourceLocation LParenLoc;
 
   /// A kind of the 'proc_bind' clause.
-  OpenMPProcBindClauseKind Kind = OMPC_PROC_BIND_unknown;
+  llvm::omp::ProcBindKind Kind = llvm::omp::OMP_PB_unknown;
 
   /// Start location of the kind in source code.
   SourceLocation KindKwLoc;
 
   /// Set kind of the clause.
   ///
   /// \param K Kind of clause.
-  void setProcBindKind(OpenMPProcBindClauseKind K) { Kind = K; }
+  void setProcBindKind(llvm::omp::ProcBindKind K) { Kind = K; }
 
   /// Set clause kind location.
   ///
   /// \param KLoc Kind location.
   void setProcBindKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; }
 
 public:
   /// Build 'proc_bind' clause with argument \a A ('master', 'close' or
   ///        'spread').
   ///
   /// \param A Argument of the clause ('master', 'close' or 'spread').
   /// \param ALoc Starting location of the argument.
   /// \param StartLoc Starting location of the clause.
   /// \param LParenLoc Location of '('.
   /// \param EndLoc Ending location of the clause.
-  OMPProcBindClause(OpenMPProcBindClauseKind A, SourceLocation ALoc,
+  OMPProcBindClause(llvm::omp::ProcBindKind A, SourceLocation ALoc,
                     SourceLocation StartLoc, SourceLocation LParenLoc,
                     SourceLocation EndLoc)
       : OMPClause(OMPC_proc_bind, StartLoc, EndLoc), LParenLoc(LParenLoc),
         Kind(A), KindKwLoc(ALoc) {}
 
   /// Build an empty clause.
   OMPProcBindClause()
       : OMPClause(OMPC_proc_bind, SourceLocation(), SourceLocation()) {}
 
   /// Sets the location of '('.
   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; }
 
   /// Returns the location of '('.
   SourceLocation getLParenLoc() const { return LParenLoc; }
 
   /// Returns kind of the clause.
-  OpenMPProcBindClauseKind getProcBindKind() const { return Kind; }
+  llvm::omp::ProcBindKind getProcBindKind() const { return Kind; }
 
   /// Returns location of clause kind.
   SourceLocation getProcBindKindKwLoc() const { return KindKwLoc; }
 
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
 

clang/include/clang/Basic/OpenMPKinds.h

 /// OpenMP attributes for 'default' clause.
 enum OpenMPDefaultClauseKind {
 #define OPENMP_DEFAULT_KIND(Name) \
   OMPC_DEFAULT_##Name,
 #include "clang/Basic/OpenMPKinds.def"
   OMPC_DEFAULT_unknown
 };
 
-/// OpenMP attributes for 'proc_bind' clause.
-enum OpenMPProcBindClauseKind {
-#define OPENMP_PROC_BIND_KIND(Name) \
-  OMPC_PROC_BIND_##Name,
-#include "clang/Basic/OpenMPKinds.def"
-  OMPC_PROC_BIND_unknown
-};
-
 /// OpenMP attributes for 'schedule' clause.
 enum OpenMPScheduleClauseKind {
 #define OPENMP_SCHEDULE_KIND(Name) \
   OMPC_SCHEDULE_##Name,
 #include "clang/Basic/OpenMPKinds.def"
   OMPC_SCHEDULE_unknown
 };
 

clang/include/clang/Basic/OpenMPKinds.def

 #  define OPENMP_CRITICAL_CLAUSE(Name)
 #endif
 #ifndef OPENMP_DISTRIBUTE_CLAUSE
 #define OPENMP_DISTRIBUTE_CLAUSE(Name)
 #endif
 #ifndef OPENMP_DEFAULT_KIND
 #  define OPENMP_DEFAULT_KIND(Name)
 #endif
-#ifndef OPENMP_PROC_BIND_KIND
-#  define OPENMP_PROC_BIND_KIND(Name)
-#endif
 #ifndef OPENMP_SCHEDULE_KIND
 #define OPENMP_SCHEDULE_KIND(Name)
 #endif
 #ifndef OPENMP_SCHEDULE_MODIFIER
 #define OPENMP_SCHEDULE_MODIFIER(Name)
 #endif
 #ifndef OPENMP_DEPEND_KIND
 #define OPENMP_DEPEND_KIND(Name)

 
 // Clauses allowed for OpenMP directive 'cancel'.
 OPENMP_CANCEL_CLAUSE(if)
 
 // Static attributes for 'default' clause.
 OPENMP_DEFAULT_KIND(none)
 OPENMP_DEFAULT_KIND(shared)
 
-// Static attributes for 'proc_bind' clause.
-OPENMP_PROC_BIND_KIND(master)
-OPENMP_PROC_BIND_KIND(close)
-OPENMP_PROC_BIND_KIND(spread)
-
 // Static attributes for 'schedule' clause.
 OPENMP_SCHEDULE_KIND(static)
 OPENMP_SCHEDULE_KIND(dynamic)
 OPENMP_SCHEDULE_KIND(guided)
 OPENMP_SCHEDULE_KIND(auto)
 OPENMP_SCHEDULE_KIND(runtime)
 
 // Modifiers for 'schedule' clause.

 #undef OPENMP_MASTER_TASKLOOP_SIMD_CLAUSE
 #undef OPENMP_MASTER_TASKLOOP_CLAUSE
 #undef OPENMP_TASKLOOP_SIMD_CLAUSE
 #undef OPENMP_TASKLOOP_CLAUSE
 #undef OPENMP_LINEAR_KIND
 #undef OPENMP_DEPEND_KIND
 #undef OPENMP_SCHEDULE_MODIFIER
 #undef OPENMP_SCHEDULE_KIND
-#undef OPENMP_PROC_BIND_KIND
 #undef OPENMP_DEFAULT_KIND
 #undef OPENMP_CLAUSE
 #undef OPENMP_CRITICAL_CLAUSE
 #undef OPENMP_ORDERED_CLAUSE
 #undef OPENMP_CANCEL_CLAUSE
 #undef OPENMP_SINGLE_CLAUSE
 #undef OPENMP_SECTIONS_CLAUSE
 #undef OPENMP_PARALLEL_CLAUSE

clang/include/clang/Sema/Sema.h

 #include "clang/Sema/Weak.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallBitVector.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/TinyPtrVector.h"
+#include "llvm/Frontend/OpenMPConstants.h"
 #include <deque>
 #include <memory>
 #include <string>
 #include <tuple>
 #include <vector>
 
 namespace llvm {
   class APSInt;
OMPClause *ActOnOpenMPSimpleClause(OpenMPClauseKind Kind,
                                      SourceLocation EndLoc);
   /// Called on well-formed 'default' clause.
   OMPClause *ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind,
                                       SourceLocation KindLoc,
                                       SourceLocation StartLoc,
                                       SourceLocation LParenLoc,
                                       SourceLocation EndLoc);
   /// Called on well-formed 'proc_bind' clause.
-  OMPClause *ActOnOpenMPProcBindClause(OpenMPProcBindClauseKind Kind,
+  OMPClause *ActOnOpenMPProcBindClause(llvm::omp::ProcBindKind Kind,
                                        SourceLocation KindLoc,
                                        SourceLocation StartLoc,
                                        SourceLocation LParenLoc,
                                        SourceLocation EndLoc);
 
   OMPClause *ActOnOpenMPSingleExprWithArgClause(
       OpenMPClauseKind Kind, ArrayRef<unsigned> Arguments, Expr *Expr,
       SourceLocation StartLoc, SourceLocation LParenLoc,

clang/lib/AST/OpenMPClause.cpp

 void OMPClausePrinter::VisitOMPDefaultClause(OMPDefaultClause *Node) {
   OS << "default("
      << getOpenMPSimpleClauseTypeName(OMPC_default, Node->getDefaultKind())
      << ")";
 }
 
 void OMPClausePrinter::VisitOMPProcBindClause(OMPProcBindClause *Node) {
   OS << "proc_bind("
-     << getOpenMPSimpleClauseTypeName(OMPC_proc_bind, Node->getProcBindKind())
+     << getOpenMPSimpleClauseTypeName(OMPC_proc_bind,
+                                      unsigned(Node->getProcBindKind()))
      << ")";
 }
 
 void OMPClausePrinter::VisitOMPUnifiedAddressClause(OMPUnifiedAddressClause *) {
   OS << "unified_address";
 }
 
 void OMPClausePrinter::VisitOMPUnifiedSharedMemoryClause(

clang/lib/Basic/OpenMPKinds.cpp

unsigned clang::getOpenMPSimpleClauseType(OpenMPClauseKind Kind,
                                           StringRef Str) {
   switch (Kind) {
   case OMPC_default:
     return llvm::StringSwitch<OpenMPDefaultClauseKind>(Str)
 #define OPENMP_DEFAULT_KIND(Name) .Case(#Name, OMPC_DEFAULT_##Name)
 #include "clang/Basic/OpenMPKinds.def"
         .Default(OMPC_DEFAULT_unknown);
   case OMPC_proc_bind:
-    return llvm::StringSwitch<OpenMPProcBindClauseKind>(Str)
-#define OPENMP_PROC_BIND_KIND(Name) .Case(#Name, OMPC_PROC_BIND_##Name)
-#include "clang/Basic/OpenMPKinds.def"
-        .Default(OMPC_PROC_BIND_unknown);
+    return llvm::StringSwitch<unsigned>(Str)
+#define OMP_PROC_BIND_KIND(Enum, Name, Value) .Case(Name, Value)
+#include "llvm/Frontend/OpenMPKinds.def"
+        ;
   case OMPC_schedule:
     return llvm::StringSwitch<unsigned>(Str)
 #define OPENMP_SCHEDULE_KIND(Name)                                             \
   .Case(#Name, static_cast<unsigned>(OMPC_SCHEDULE_##Name))
 #define OPENMP_SCHEDULE_MODIFIER(Name)                                         \
   .Case(#Name, static_cast<unsigned>(OMPC_SCHEDULE_MODIFIER_##Name))
 #include "clang/Basic/OpenMPKinds.def"
         .Default(OMPC_SCHEDULE_unknown);

 #define OPENMP_DEFAULT_KIND(Name)                                              \
   case OMPC_DEFAULT_##Name:                                                    \
     return #Name;
 #include "clang/Basic/OpenMPKinds.def"
     }
     llvm_unreachable("Invalid OpenMP 'default' clause type");
   case OMPC_proc_bind:
     switch (Type) {
-    case OMPC_PROC_BIND_unknown:
-      return "unknown";
-#define OPENMP_PROC_BIND_KIND(Name)                                            \
-  case OMPC_PROC_BIND_##Name:                                                  \
-    return #Name;
-#include "clang/Basic/OpenMPKinds.def"
+#define OMP_PROC_BIND_KIND(Enum, Name, Value)                                  \
+  case Value:                                                                  \
+    return Name;
+#include "llvm/Frontend/OpenMPKinds.def"
     }
     llvm_unreachable("Invalid OpenMP 'proc_bind' clause type");
   case OMPC_schedule:
     switch (Type) {
     case OMPC_SCHEDULE_unknown:
     case OMPC_SCHEDULE_MODIFIER_last:
       return "unknown";
 #define OPENMP_SCHEDULE_KIND(Name)                                             \

clang/lib/CodeGen/CGOpenMPRuntime.h

 #include "clang/AST/DeclOpenMP.h"
 #include "clang/AST/GlobalDecl.h"
 #include "clang/AST/Type.h"
 #include "clang/Basic/OpenMPKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringSet.h"
+#include "llvm/Frontend/OpenMPConstants.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/ValueHandle.h"
 
 namespace llvm {
 class ArrayType;
 class Constant;
 class FunctionType;
 class GlobalVariable;
public:
   /// \param NumThreads An integer value of threads.
   virtual void emitNumThreadsClause(CodeGenFunction &CGF,
                                     llvm::Value *NumThreads,
                                     SourceLocation Loc);
 
   /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32
   /// global_tid, int proc_bind) to generate code for 'proc_bind' clause.
   virtual void emitProcBindClause(CodeGenFunction &CGF,
-                                  OpenMPProcBindClauseKind ProcBind,
+                                  llvm::omp::ProcBindKind ProcBind,
                                   SourceLocation Loc);
 
   /// Returns address of the threadprivate variable for the current
   /// thread.
   /// \param VD Threadprivate variable.
   /// \param VDAddr Address of the global variable \a VD.
   /// \param Loc Location of the reference to threadprivate var.
   /// \return Address of the threadprivate variable for the current thread.
public:
   /// clause.
   /// \param NumThreads An integer value of threads.
   void emitNumThreadsClause(CodeGenFunction &CGF, llvm::Value *NumThreads,
                             SourceLocation Loc) override;
 
   /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32
   /// global_tid, int proc_bind) to generate code for 'proc_bind' clause.
   void emitProcBindClause(CodeGenFunction &CGF,
-                          OpenMPProcBindClauseKind ProcBind,
+                          llvm::omp::ProcBindKind ProcBind,
                           SourceLocation Loc) override;
 
   /// Returns address of the threadprivate variable for the current
   /// thread.
   /// \param VD Threadprivate variable.
   /// \param VDAddr Address of the global variable \a VD.
   /// \param Loc Location of the reference to threadprivate var.
   /// \return Address of the threadprivate variable for the current thread.

clang/lib/CodeGen/CGOpenMPRuntime.cpp

void CGOpenMPRuntime::emitNumThreadsClause(CodeGenFunction &CGF,
   llvm::Value *Args[] = {
       emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc),
       CGF.Builder.CreateIntCast(NumThreads, CGF.Int32Ty, /*isSigned*/ true)};
   CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_num_threads),
                       Args);
 }
 
 void CGOpenMPRuntime::emitProcBindClause(CodeGenFunction &CGF,
-                                         OpenMPProcBindClauseKind ProcBind,
+                                         ProcBindKind ProcBind,
                                          SourceLocation Loc) {
   if (!CGF.HaveInsertPoint())
     return;
-  // Constants for proc bind value accepted by the runtime.
-  enum ProcBindTy {
-    ProcBindFalse = 0,
-    ProcBindTrue,
-    ProcBindMaster,
-    ProcBindClose,
-    ProcBindSpread,
-    ProcBindIntel,
-    ProcBindDefault
-  } RuntimeProcBind;
-  switch (ProcBind) {
-  case OMPC_PROC_BIND_master:
-    RuntimeProcBind = ProcBindMaster;
-    break;
-  case OMPC_PROC_BIND_close:
-    RuntimeProcBind = ProcBindClose;
-    break;
-  case OMPC_PROC_BIND_spread:
-    RuntimeProcBind = ProcBindSpread;
-    break;
-  case OMPC_PROC_BIND_unknown:
-    llvm_unreachable("Unsupported proc_bind value.");
-  }
+  assert(ProcBind != OMP_PB_unknown && "Unsupported proc_bind value.");
   // Build call __kmpc_push_proc_bind(&loc, global_tid, proc_bind)
   llvm::Value *Args[] = {
       emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc),
-      llvm::ConstantInt::get(CGM.IntTy, RuntimeProcBind, /*isSigned=*/true)};
+      llvm::ConstantInt::get(CGM.IntTy, unsigned(ProcBind), /*isSigned=*/true)};
   CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_proc_bind), Args);
 }
 
 void CGOpenMPRuntime::emitFlush(CodeGenFunction &CGF, ArrayRef<const Expr *>,
                                 SourceLocation Loc) {
   if (!CGF.HaveInsertPoint())
     return;
   // Build call void __kmpc_flush(ident_t *loc)

 
 void CGOpenMPSIMDRuntime::emitNumThreadsClause(CodeGenFunction &CGF,
                                                llvm::Value *NumThreads,
                                                SourceLocation Loc) {
   llvm_unreachable("Not supported in SIMD-only mode");
 }
 
 void CGOpenMPSIMDRuntime::emitProcBindClause(CodeGenFunction &CGF,
-                                             OpenMPProcBindClauseKind ProcBind,
+                                             ProcBindKind ProcBind,
                                              SourceLocation Loc) {
   llvm_unreachable("Not supported in SIMD-only mode");
 }
 
 Address CGOpenMPSIMDRuntime::getAddrOfThreadPrivate(CodeGenFunction &CGF,
                                                     const VarDecl *VD,
                                                     Address VDAddr,
                                                     SourceLocation Loc) {

clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.h

 
 public:
   explicit CGOpenMPRuntimeNVPTX(CodeGenModule &CGM);
   void clear() override;
 
   /// Emit call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32
   /// global_tid, int proc_bind) to generate code for 'proc_bind' clause.
   virtual void emitProcBindClause(CodeGenFunction &CGF,
-                                  OpenMPProcBindClauseKind ProcBind,
+                                  llvm::omp::ProcBindKind ProcBind,
                                   SourceLocation Loc) override;
 
   /// Emits call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32
   /// global_tid, kmp_int32 num_threads) to generate code for 'num_threads'
   /// clause.
   /// \param NumThreads An integer value of threads.
   virtual void emitNumThreadsClause(CodeGenFunction &CGF,
                                     llvm::Value *NumThreads,

clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp

 
 CGOpenMPRuntimeNVPTX::CGOpenMPRuntimeNVPTX(CodeGenModule &CGM)
     : CGOpenMPRuntime(CGM, "_", "$") {
   if (!CGM.getLangOpts().OpenMPIsDevice)
     llvm_unreachable("OpenMP NVPTX can only handle device code.");
 }
 
 void CGOpenMPRuntimeNVPTX::emitProcBindClause(CodeGenFunction &CGF,
-                                              OpenMPProcBindClauseKind ProcBind,
+                                              ProcBindKind ProcBind,
                                               SourceLocation Loc) {
   // Do nothing in case of SPMD mode and L0 parallel.
   if (getExecutionMode() == CGOpenMPRuntimeNVPTX::EM_SPMD)
     return;
 
   CGOpenMPRuntime::emitProcBindClause(CGF, ProcBind, Loc);
 }
 

clang/lib/Sema/SemaOpenMP.cpp

OMPClause *Sema::ActOnOpenMPSimpleClause(
   OMPClause *Res = nullptr;
   switch (Kind) {
   case OMPC_default:
     Res =
         ActOnOpenMPDefaultClause(static_cast<OpenMPDefaultClauseKind>(Argument),
                                  ArgumentLoc, StartLoc, LParenLoc, EndLoc);
     break;
   case OMPC_proc_bind:
-    Res = ActOnOpenMPProcBindClause(
-        static_cast<OpenMPProcBindClauseKind>(Argument), ArgumentLoc, StartLoc,
-        LParenLoc, EndLoc);
+    Res = ActOnOpenMPProcBindClause(static_cast<ProcBindKind>(Argument),
+                                    ArgumentLoc, StartLoc, LParenLoc, EndLoc);
     break;
   case OMPC_atomic_default_mem_order:
     Res = ActOnOpenMPAtomicDefaultMemOrderClause(
         static_cast<OpenMPAtomicDefaultMemOrderClauseKind>(Argument),
         ArgumentLoc, StartLoc, LParenLoc, EndLoc);
     break;
   case OMPC_if:
   case OMPC_final:
OMPClause *Sema::ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind,
   case OMPC_DEFAULT_unknown:
     llvm_unreachable("Clause kind is not allowed.");
     break;
   }
   return new (Context)
       OMPDefaultClause(Kind, KindKwLoc, StartLoc, LParenLoc, EndLoc);
 }
 
-OMPClause *Sema::ActOnOpenMPProcBindClause(OpenMPProcBindClauseKind Kind,
+OMPClause *Sema::ActOnOpenMPProcBindClause(ProcBindKind Kind,
                                            SourceLocation KindKwLoc,
                                            SourceLocation StartLoc,
                                            SourceLocation LParenLoc,
                                            SourceLocation EndLoc) {
-  if (Kind == OMPC_PROC_BIND_unknown) {
+  if (Kind == OMP_PB_unknown) {
     Diag(KindKwLoc, diag::err_omp_unexpected_clause_value)
-        << getListOfPossibleValues(OMPC_proc_bind, /*First=*/0,
-                                   /*Last=*/OMPC_PROC_BIND_unknown)
+        << getListOfPossibleValues(OMPC_proc_bind,
+                                   /*First=*/unsigned(OMP_PB_master),
+                                   /*Last=*/unsigned(OMP_PB_spread))
         << getOpenMPClauseName(OMPC_proc_bind);
     return nullptr;
   }
   return new (Context)
       OMPProcBindClause(Kind, KindKwLoc, StartLoc, LParenLoc, EndLoc);
 }
 
 OMPClause *Sema::ActOnOpenMPAtomicDefaultMemOrderClause(

clang/lib/Sema/TreeTransform.h

OMPClause *RebuildOMPDefaultClause(OpenMPDefaultClauseKind Kind,
     return getSema().ActOnOpenMPDefaultClause(Kind, KindKwLoc,
                                               StartLoc, LParenLoc, EndLoc);
   }
 
   /// Build a new OpenMP 'proc_bind' clause.
   ///
   /// By default, performs semantic analysis to build the new OpenMP clause.
   /// Subclasses may override this routine to provide different behavior.
-  OMPClause *RebuildOMPProcBindClause(OpenMPProcBindClauseKind Kind,
+  OMPClause *RebuildOMPProcBindClause(ProcBindKind Kind,
                                       SourceLocation KindKwLoc,
                                       SourceLocation StartLoc,
                                       SourceLocation LParenLoc,
                                       SourceLocation EndLoc) {
     return getSema().ActOnOpenMPProcBindClause(Kind, KindKwLoc,
                                                StartLoc, LParenLoc, EndLoc);
   }
 

clang/lib/Serialization/ASTReader.cpp

 void OMPClauseReader::VisitOMPDefaultClause(OMPDefaultClause *C) {
   C->setDefaultKind(
        static_cast<OpenMPDefaultClauseKind>(Record.readInt()));
   C->setLParenLoc(Record.readSourceLocation());
   C->setDefaultKindKwLoc(Record.readSourceLocation());
 }
 
 void OMPClauseReader::VisitOMPProcBindClause(OMPProcBindClause *C) {
-  C->setProcBindKind(
-       static_cast<OpenMPProcBindClauseKind>(Record.readInt()));
+  C->setProcBindKind(static_cast<llvm::omp::ProcBindKind>(Record.readInt()));
   C->setLParenLoc(Record.readSourceLocation());
   C->setProcBindKindKwLoc(Record.readSourceLocation());
 }
 
 void OMPClauseReader::VisitOMPScheduleClause(OMPScheduleClause *C) {
   VisitOMPClauseWithPreInit(C);
   C->setScheduleKind(
        static_cast<OpenMPScheduleClauseKind>(Record.readInt()));

clang/lib/Serialization/ASTWriter.cpp

 
 void OMPClauseWriter::VisitOMPDefaultClause(OMPDefaultClause *C) {
   Record.push_back(C->getDefaultKind());
   Record.AddSourceLocation(C->getLParenLoc());
   Record.AddSourceLocation(C->getDefaultKindKwLoc());
 }
 
 void OMPClauseWriter::VisitOMPProcBindClause(OMPProcBindClause *C) {
-  Record.push_back(C->getProcBindKind());
+  Record.push_back(unsigned(C->getProcBindKind()));
   Record.AddSourceLocation(C->getLParenLoc());
   Record.AddSourceLocation(C->getProcBindKindKwLoc());
 }
 
 void OMPClauseWriter::VisitOMPScheduleClause(OMPScheduleClause *C) {
   VisitOMPClauseWithPreInit(C);
   Record.push_back(C->getScheduleKind());
   Record.push_back(C->getFirstScheduleModifier());