r315668 - [OpenCL] Add LangAS::opencl_private to represent private address space in AST

Eric Liu via cfe-commits cfe-commits at lists.llvm.org
Fri Oct 13 07:10:27 PDT 2017


Hi Yaxun, this is causing failures in ppc build bots (
http://lab.llvm.org:8011/builders/clang-ppc64be-linux-multistage/builds/5486).
I'll revert the patch for now. Please take a look. Thanks!

On Fri, Oct 13, 2017 at 5:37 AM Yaxun Liu via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> Author: yaxunl
> Date: Thu Oct 12 20:37:48 2017
> New Revision: 315668
>
> URL: http://llvm.org/viewvc/llvm-project?rev=315668&view=rev
> Log:
> [OpenCL] Add LangAS::opencl_private to represent private address space in
> AST
>
> Currently Clang uses default address space (0) to represent private
> address space for OpenCL
> in AST. There are two issues with this:
>
> Multiple address spaces including private address space cannot be
> diagnosed.
> There is no mangling for default address space. For example, if private
> int* is emitted as
> i32 addrspace(5)* in IR. It is supposed to be mangled as PUAS5i but it is
> mangled as
> Pi instead.
>
> This patch attempts to represent OpenCL private address space explicitly
> in AST. It adds
> a new enum LangAS::opencl_private and adds it to the variable types which
> are implicitly
> private:
>
> automatic variables without address space qualifier
>
> function parameter
>
> pointee type without address space qualifier (OpenCL 1.2 and below)
>
> Differential Revision: https://reviews.llvm.org/D35082
>
> Removed:
>     cfe/trunk/test/SemaOpenCL/extern.cl
> Modified:
>     cfe/trunk/include/clang/Basic/AddressSpaces.h
>     cfe/trunk/lib/AST/ASTContext.cpp
>     cfe/trunk/lib/AST/Expr.cpp
>     cfe/trunk/lib/AST/ItaniumMangle.cpp
>     cfe/trunk/lib/AST/TypePrinter.cpp
>     cfe/trunk/lib/Basic/Targets/AMDGPU.cpp
>     cfe/trunk/lib/Basic/Targets/NVPTX.h
>     cfe/trunk/lib/Basic/Targets/SPIR.h
>     cfe/trunk/lib/Basic/Targets/TCE.h
>     cfe/trunk/lib/CodeGen/CGDecl.cpp
>     cfe/trunk/lib/Sema/SemaChecking.cpp
>     cfe/trunk/lib/Sema/SemaDecl.cpp
>     cfe/trunk/lib/Sema/SemaType.cpp
>     cfe/trunk/test/CodeGenOpenCL/address-spaces-mangling.cl
>     cfe/trunk/test/CodeGenOpenCL/address-spaces.cl
>     cfe/trunk/test/SemaOpenCL/address-spaces.cl
>     cfe/trunk/test/SemaOpenCL/cl20-device-side-enqueue.cl
>     cfe/trunk/test/SemaOpenCL/storageclass-cl20.cl
>     cfe/trunk/test/SemaOpenCL/storageclass.cl
>     cfe/trunk/test/SemaTemplate/address_space-dependent.cpp
>
> Modified: cfe/trunk/include/clang/Basic/AddressSpaces.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/AddressSpaces.h?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/include/clang/Basic/AddressSpaces.h (original)
> +++ cfe/trunk/include/clang/Basic/AddressSpaces.h Thu Oct 12 20:37:48 2017
> @@ -25,16 +25,17 @@ namespace LangAS {
>  ///
>  enum ID {
>    // The default value 0 is the value used in QualType for the the
> situation
> -  // where there is no address space qualifier. For most languages, this
> also
> -  // corresponds to the situation where there is no address space
> qualifier in
> -  // the source code, except for OpenCL, where the address space value 0
> in
> -  // QualType represents private address space in OpenCL source code.
> +  // where there is no address space qualifier.
>    Default = 0,
>
>    // OpenCL specific address spaces.
> +  // In OpenCL each l-value must have certain non-default address space,
> each
> +  // r-value must have no address space (i.e. the default address space).
> The
> +  // pointee of a pointer must have non-default address space.
>    opencl_global,
>    opencl_local,
>    opencl_constant,
> +  opencl_private,
>    opencl_generic,
>
>    // CUDA specific address spaces.
>
> Modified: cfe/trunk/lib/AST/ASTContext.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ASTContext.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/AST/ASTContext.cpp (original)
> +++ cfe/trunk/lib/AST/ASTContext.cpp Thu Oct 12 20:37:48 2017
> @@ -707,6 +707,7 @@ static const LangAS::Map *getAddressSpac
>        1, // opencl_global
>        3, // opencl_local
>        2, // opencl_constant
> +      0, // opencl_private
>        4, // opencl_generic
>        5, // cuda_device
>        6, // cuda_constant
>
> Modified: cfe/trunk/lib/AST/Expr.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/Expr.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/AST/Expr.cpp (original)
> +++ cfe/trunk/lib/AST/Expr.cpp Thu Oct 12 20:37:48 2017
> @@ -3293,20 +3293,20 @@ Expr::isNullPointerConstant(ASTContext &
>        // Check that it is a cast to void*.
>        if (const PointerType *PT = CE->getType()->getAs<PointerType>()) {
>          QualType Pointee = PT->getPointeeType();
> -        Qualifiers Q = Pointee.getQualifiers();
> -        // In OpenCL v2.0 generic address space acts as a placeholder
> -        // and should be ignored.
> -        bool IsASValid = true;
> -        if (Ctx.getLangOpts().OpenCLVersion >= 200) {
> -          if (Pointee.getAddressSpace() == LangAS::opencl_generic)
> -            Q.removeAddressSpace();
> -          else
> -            IsASValid = false;
> -        }
> +        // Only (void*)0 or equivalent are treated as nullptr. If pointee
> type
> +        // has non-default address space it is not treated as nullptr.
> +        // (__generic void*)0 in OpenCL 2.0 should not be treated as
> nullptr
> +        // since it cannot be assigned to a pointer to constant address
> space.
> +        bool PointeeHasDefaultAS =
> +            Pointee.getAddressSpace() == LangAS::Default ||
> +            (Ctx.getLangOpts().OpenCLVersion >= 200 &&
> +             Pointee.getAddressSpace() == LangAS::opencl_generic) ||
> +            (Ctx.getLangOpts().OpenCL &&
> +             Ctx.getLangOpts().OpenCLVersion < 200 &&
> +             Pointee.getAddressSpace() == LangAS::opencl_private);
>
> -        if (IsASValid && !Q.hasQualifiers() &&
> -            Pointee->isVoidType() &&                      // to void*
> -            CE->getSubExpr()->getType()->isIntegerType()) // from int.
> +        if (PointeeHasDefaultAS && Pointee->isVoidType() && // to void*
> +            CE->getSubExpr()->getType()->isIntegerType())   // from int.
>            return CE->getSubExpr()->isNullPointerConstant(Ctx, NPC);
>        }
>      }
>
> Modified: cfe/trunk/lib/AST/ItaniumMangle.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ItaniumMangle.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/AST/ItaniumMangle.cpp (original)
> +++ cfe/trunk/lib/AST/ItaniumMangle.cpp Thu Oct 12 20:37:48 2017
> @@ -2227,15 +2227,17 @@ void CXXNameMangler::mangleQualifiers(Qu
>      if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
>        //  <target-addrspace> ::= "AS" <address-space-number>
>        unsigned TargetAS =
> Context.getASTContext().getTargetAddressSpace(AS);
> -      ASString = "AS" + llvm::utostr(TargetAS);
> +      if (TargetAS != 0)
> +        ASString = "AS" + llvm::utostr(TargetAS);
>      } else {
>        switch (AS) {
>        default: llvm_unreachable("Not a language specific address space");
> -      //  <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant |
> -      //                                "generic" ]
> +      //  <OpenCL-addrspace> ::= "CL" [ "global" | "local" | "constant" |
> +      //                                "private"| "generic" ]
>        case LangAS::opencl_global:   ASString = "CLglobal";   break;
>        case LangAS::opencl_local:    ASString = "CLlocal";    break;
>        case LangAS::opencl_constant: ASString = "CLconstant"; break;
> +      case LangAS::opencl_private:  ASString = "CLprivate";  break;
>        case LangAS::opencl_generic:  ASString = "CLgeneric";  break;
>        //  <CUDA-addrspace> ::= "CU" [ "device" | "constant" | "shared" ]
>        case LangAS::cuda_device:     ASString = "CUdevice";   break;
> @@ -2243,7 +2245,8 @@ void CXXNameMangler::mangleQualifiers(Qu
>        case LangAS::cuda_shared:     ASString = "CUshared";   break;
>        }
>      }
> -    mangleVendorQualifier(ASString);
> +    if (!ASString.empty())
> +      mangleVendorQualifier(ASString);
>    }
>
>    // The ARC ownership qualifiers start with underscores.
>
> Modified: cfe/trunk/lib/AST/TypePrinter.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/TypePrinter.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/AST/TypePrinter.cpp (original)
> +++ cfe/trunk/lib/AST/TypePrinter.cpp Thu Oct 12 20:37:48 2017
> @@ -1677,16 +1677,19 @@ void Qualifiers::print(raw_ostream &OS,
>      addSpace = true;
>    }
>    if (unsigned addrspace = getAddressSpace()) {
> -    if (addSpace)
> -      OS << ' ';
> -    addSpace = true;
> -    switch (addrspace) {
> +    if (addrspace != LangAS::opencl_private) {
> +      if (addSpace)
> +        OS << ' ';
> +      addSpace = true;
> +      switch (addrspace) {
>        case LangAS::opencl_global:
>          OS << "__global";
>          break;
>        case LangAS::opencl_local:
>          OS << "__local";
>          break;
> +      case LangAS::opencl_private:
> +        break;
>        case LangAS::opencl_constant:
>        case LangAS::cuda_constant:
>          OS << "__constant";
> @@ -1705,6 +1708,7 @@ void Qualifiers::print(raw_ostream &OS,
>          OS << "__attribute__((address_space(";
>          OS << addrspace - LangAS::FirstTargetAddressSpace;
>          OS << ")))";
> +      }
>      }
>    }
>    if (Qualifiers::GC gc = getObjCGCAttr()) {
>
> Modified: cfe/trunk/lib/Basic/Targets/AMDGPU.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/AMDGPU.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Basic/Targets/AMDGPU.cpp (original)
> +++ cfe/trunk/lib/Basic/Targets/AMDGPU.cpp Thu Oct 12 20:37:48 2017
> @@ -47,6 +47,7 @@ static const LangAS::Map AMDGPUPrivIsZer
>      1, // opencl_global
>      3, // opencl_local
>      2, // opencl_constant
> +    0, // opencl_private
>      4, // opencl_generic
>      1, // cuda_device
>      2, // cuda_constant
> @@ -58,6 +59,7 @@ static const LangAS::Map AMDGPUGenIsZero
>      1, // opencl_global
>      3, // opencl_local
>      2, // opencl_constant
> +    5, // opencl_private
>      0, // opencl_generic
>      1, // cuda_device
>      2, // cuda_constant
> @@ -69,6 +71,7 @@ static const LangAS::Map AMDGPUPrivIsZer
>      1, // opencl_global
>      3, // opencl_local
>      2, // opencl_constant
> +    0, // opencl_private
>      4, // opencl_generic
>      1, // cuda_device
>      2, // cuda_constant
> @@ -80,6 +83,7 @@ static const LangAS::Map AMDGPUGenIsZero
>      1, // opencl_global
>      3, // opencl_local
>      2, // opencl_constant
> +    5, // opencl_private
>      0, // opencl_generic
>      1, // cuda_device
>      2, // cuda_constant
>
> Modified: cfe/trunk/lib/Basic/Targets/NVPTX.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/NVPTX.h?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Basic/Targets/NVPTX.h (original)
> +++ cfe/trunk/lib/Basic/Targets/NVPTX.h Thu Oct 12 20:37:48 2017
> @@ -28,6 +28,7 @@ static const unsigned NVPTXAddrSpaceMap[
>      1, // opencl_global
>      3, // opencl_local
>      4, // opencl_constant
> +    0, // opencl_private
>      // FIXME: generic has to be added to the target
>      0, // opencl_generic
>      1, // cuda_device
>
> Modified: cfe/trunk/lib/Basic/Targets/SPIR.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/SPIR.h?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Basic/Targets/SPIR.h (original)
> +++ cfe/trunk/lib/Basic/Targets/SPIR.h Thu Oct 12 20:37:48 2017
> @@ -27,6 +27,7 @@ static const unsigned SPIRAddrSpaceMap[]
>      1, // opencl_global
>      3, // opencl_local
>      2, // opencl_constant
> +    0, // opencl_private
>      4, // opencl_generic
>      0, // cuda_device
>      0, // cuda_constant
>
> Modified: cfe/trunk/lib/Basic/Targets/TCE.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/TCE.h?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Basic/Targets/TCE.h (original)
> +++ cfe/trunk/lib/Basic/Targets/TCE.h Thu Oct 12 20:37:48 2017
> @@ -35,6 +35,7 @@ static const unsigned TCEOpenCLAddrSpace
>      3, // opencl_global
>      4, // opencl_local
>      5, // opencl_constant
> +    0, // opencl_private
>      // FIXME: generic has to be added to the target
>      0, // opencl_generic
>      0, // cuda_device
>
> Modified: cfe/trunk/lib/CodeGen/CGDecl.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDecl.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGDecl.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGDecl.cpp Thu Oct 12 20:37:48 2017
> @@ -956,7 +956,9 @@ void CodeGenFunction::EmitLifetimeEnd(ll
>  CodeGenFunction::AutoVarEmission
>  CodeGenFunction::EmitAutoVarAlloca(const VarDecl &D) {
>    QualType Ty = D.getType();
> -  assert(Ty.getAddressSpace() == LangAS::Default);
> +  assert(
> +      Ty.getAddressSpace() == LangAS::Default ||
> +      (Ty.getAddressSpace() == LangAS::opencl_private &&
> getLangOpts().OpenCL));
>
>    AutoVarEmission emission(D);
>
>
> Modified: cfe/trunk/lib/Sema/SemaChecking.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaChecking.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Sema/SemaChecking.cpp (original)
> +++ cfe/trunk/lib/Sema/SemaChecking.cpp Thu Oct 12 20:37:48 2017
> @@ -340,7 +340,7 @@ static bool SemaOpenCLBuiltinNDRangeAndB
>
>    // First argument is an ndrange_t type.
>    Expr *NDRangeArg = TheCall->getArg(0);
> -  if (NDRangeArg->getType().getAsString() != "ndrange_t") {
> +  if (NDRangeArg->getType().getUnqualifiedType().getAsString() !=
> "ndrange_t") {
>      S.Diag(NDRangeArg->getLocStart(),
>             diag::err_opencl_builtin_expected_type)
>          << TheCall->getDirectCallee() << "'ndrange_t'";
> @@ -784,8 +784,11 @@ static bool SemaOpenCLBuiltinToAddr(Sema
>    case Builtin::BIto_local:
>      Qual.setAddressSpace(LangAS::opencl_local);
>      break;
> +  case Builtin::BIto_private:
> +    Qual.setAddressSpace(LangAS::opencl_private);
> +    break;
>    default:
> -    Qual.removeAddressSpace();
> +    llvm_unreachable("Invalid builtin function");
>    }
>    Call->setType(S.Context.getPointerType(S.Context.getQualifiedType(
>        RT.getUnqualifiedType(), Qual)));
>
> Modified: cfe/trunk/lib/Sema/SemaDecl.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDecl.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Sema/SemaDecl.cpp (original)
> +++ cfe/trunk/lib/Sema/SemaDecl.cpp Thu Oct 12 20:37:48 2017
> @@ -6324,7 +6324,7 @@ NamedDecl *Sema::ActOnVariableDeclarator
>      // The event type cannot be used with the __local, __constant and
> __global
>      // address space qualifiers.
>      if (R->isEventT()) {
> -      if (R.getAddressSpace()) {
> +      if (R.getAddressSpace() != LangAS::opencl_private) {
>          Diag(D.getLocStart(), diag::err_event_t_addr_space_qual);
>          D.setInvalidType();
>        }
> @@ -7427,7 +7427,7 @@ void Sema::CheckVariableDeclarationType(
>              return;
>            }
>          }
> -      } else if (T.getAddressSpace() != LangAS::Default) {
> +      } else if (T.getAddressSpace() != LangAS::opencl_private) {
>          // Do not allow other address spaces on automatic variable.
>          Diag(NewVD->getLocation(), diag::err_as_qualified_auto_decl) << 1;
>          NewVD->setInvalidDecl();
> @@ -8062,7 +8062,8 @@ static OpenCLParamType getOpenCLKernelPa
>      if (PointeeType->isPointerType())
>        return PtrPtrKernelParam;
>      if (PointeeType.getAddressSpace() == LangAS::opencl_generic ||
> -        PointeeType.getAddressSpace() == 0)
> +        PointeeType.getAddressSpace() == LangAS::opencl_private ||
> +        PointeeType.getAddressSpace() == LangAS::Default)
>        return InvalidAddrSpacePtrKernelParam;
>      return PtrKernelParam;
>    }
> @@ -8832,9 +8833,7 @@ Sema::ActOnFunctionDeclarator(Scope *S,
>      // OpenCL v1.1 s6.5: Using an address space qualifier in a function
> return
>      // type declaration will generate a compilation error.
>      unsigned AddressSpace = NewFD->getReturnType().getAddressSpace();
> -    if (AddressSpace == LangAS::opencl_local ||
> -        AddressSpace == LangAS::opencl_global ||
> -        AddressSpace == LangAS::opencl_constant) {
> +    if (AddressSpace != LangAS::Default) {
>        Diag(NewFD->getLocation(),
>             diag::err_opencl_return_value_with_address_space);
>        NewFD->setInvalidDecl();
> @@ -11939,13 +11938,13 @@ ParmVarDecl *Sema::CheckParameter(DeclCo
>    // duration shall not be qualified by an address-space qualifier."
>    // Since all parameters have automatic store duration, they can not have
>    // an address space.
> -  if (T.getAddressSpace() != 0) {
> -    // OpenCL allows function arguments declared to be an array of a type
> -    // to be qualified with an address space.
> -    if (!(getLangOpts().OpenCL && T->isArrayType())) {
> -      Diag(NameLoc, diag::err_arg_with_address_space);
> -      New->setInvalidDecl();
> -    }
> +  if (T.getAddressSpace() != LangAS::Default &&
> +      // OpenCL allows function arguments declared to be an array of a
> type
> +      // to be qualified with an address space.
> +      !(getLangOpts().OpenCL &&
> +        (T->isArrayType() || T.getAddressSpace() ==
> LangAS::opencl_private))) {
> +    Diag(NameLoc, diag::err_arg_with_address_space);
> +    New->setInvalidDecl();
>    }
>
>    return New;
>
> Modified: cfe/trunk/lib/Sema/SemaType.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaType.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/lib/Sema/SemaType.cpp (original)
> +++ cfe/trunk/lib/Sema/SemaType.cpp Thu Oct 12 20:37:48 2017
> @@ -4938,7 +4938,6 @@ TypeSourceInfo *Sema::GetTypeForDeclarat
>
>    TypeSourceInfo *ReturnTypeInfo = nullptr;
>    QualType T = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo);
> -
>    if (D.isPrototypeContext() && getLangOpts().ObjCAutoRefCount)
>      inferARCWriteback(state, T);
>
> @@ -5752,9 +5751,10 @@ static void HandleAddressSpaceTypeAttrib
>        ASIdx = LangAS::opencl_constant; break;
>      case AttributeList::AT_OpenCLGenericAddressSpace:
>        ASIdx = LangAS::opencl_generic; break;
> +    case AttributeList::AT_OpenCLPrivateAddressSpace:
> +      ASIdx = LangAS::opencl_private; break;
>      default:
> -      assert(Attr.getKind() ==
> AttributeList::AT_OpenCLPrivateAddressSpace);
> -      ASIdx = 0; break;
> +      llvm_unreachable("Invalid address space");
>      }
>
>      Type = S.Context.getAddrSpaceQualType(Type, ASIdx);
> @@ -6986,6 +6986,92 @@ static void HandleOpenCLAccessAttr(QualT
>    }
>  }
>
> +static void deduceOpenCLImplicitAddrSpace(TypeProcessingState &State,
> +                                          QualType &T, TypeAttrLocation
> TAL) {
> +  Declarator &D = State.getDeclarator();
> +
> +  // Handle the cases where address space should not be deduced.
> +  //
> +  // The pointee type of a pointer type is alwasy deduced since a pointer
> always
> +  // points to some memory location which should has an address space.
> +  //
> +  // There are situations that at the point of certain declarations, the
> address
> +  // space may be unknown and better to be left as default. For example,
> when
> +  // definining a typedef or struct type, they are not associated with any
> +  // specific address space. Later on, they may be used with any address
> space
> +  // to declare a variable.
> +  //
> +  // The return value of a function is r-value, therefore should not have
> +  // address space.
> +  //
> +  // The void type does not occupy memory, therefore should not have
> address
> +  // space, except when it is used as a pointee type.
> +  //
> +  // Since LLVM assumes function type is in default address space, it
> should not
> +  // have address space.
> +  auto ChunkIndex = State.getCurrentChunkIndex();
> +  bool IsPointee =
> +      ChunkIndex > 0 &&
> +      (D.getTypeObject(ChunkIndex - 1).Kind == DeclaratorChunk::Pointer ||
> +       D.getTypeObject(ChunkIndex - 1).Kind ==
> DeclaratorChunk::BlockPointer);
> +  bool IsFuncReturnType =
> +      ChunkIndex > 0 &&
> +      D.getTypeObject(ChunkIndex - 1).Kind == DeclaratorChunk::Function;
> +  bool IsFuncType =
> +      ChunkIndex < D.getNumTypeObjects() &&
> +      D.getTypeObject(ChunkIndex).Kind == DeclaratorChunk::Function;
> +  if ( // Do not deduce addr space for function return type and function
> type,
> +       // otherwise it will fail some sema check.
> +      IsFuncReturnType || IsFuncType ||
> +      // Do not deduce addr space for member types of struct, except the
> pointee
> +      // type of a pointer member type.
> +      (D.getContext() == Declarator::MemberContext && !IsPointee) ||
> +      // Do not deduce addr space for types used to define a typedef and
> the
> +      // typedef itself, except the pointee type of a pointer type which
> is used
> +      // to define the typedef.
> +      (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef &&
> +       !IsPointee) ||
> +      // Do not deduce addr space of the void type, e.g. in f(void),
> otherwise
> +      // it will fail some sema check.
> +      (T->isVoidType() && !IsPointee))
> +    return;
> +
> +  unsigned ImpAddr;
> +  // Put OpenCL automatic variable in private address space.
> +  // OpenCL v1.2 s6.5:
> +  // The default address space name for arguments to a function in a
> +  // program, or local variables of a function is __private. All function
> +  // arguments shall be in the __private address space.
> +  if (State.getSema().getLangOpts().OpenCLVersion <= 120) {
> +      ImpAddr = LangAS::opencl_private;
> +  } else {
> +    // If address space is not set, OpenCL 2.0 defines non private default
> +    // address spaces for some cases:
> +    // OpenCL 2.0, section 6.5:
> +    // The address space for a variable at program scope or a static
> variable
> +    // inside a function can either be __global or __constant, but
> defaults to
> +    // __global if not specified.
> +    // (...)
> +    // Pointers that are declared without pointing to a named address
> space
> +    // point to the generic address space.
> +    if (IsPointee) {
> +      ImpAddr = LangAS::opencl_generic;
> +    } else {
> +      if (D.getContext() == Declarator::FileContext) {
> +        ImpAddr = LangAS::opencl_global;
> +      } else {
> +        if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static
> ||
> +            D.getDeclSpec().getStorageClassSpec() ==
> DeclSpec::SCS_extern) {
> +          ImpAddr = LangAS::opencl_global;
> +        } else {
> +          ImpAddr = LangAS::opencl_private;
> +        }
> +      }
> +    }
> +  }
> +  T = State.getSema().Context.getAddrSpaceQualType(T, ImpAddr);
> +}
> +
>  static void processTypeAttrs(TypeProcessingState &state, QualType &type,
>                               TypeAttrLocation TAL, AttributeList *attrs) {
>    // Scan through and apply attributes to this type where it makes
> sense.  Some
> @@ -7157,39 +7243,11 @@ static void processTypeAttrs(TypeProcess
>      }
>    }
>
> -  // If address space is not set, OpenCL 2.0 defines non private default
> -  // address spaces for some cases:
> -  // OpenCL 2.0, section 6.5:
> -  // The address space for a variable at program scope or a static
> variable
> -  // inside a function can either be __global or __constant, but defaults
> to
> -  // __global if not specified.
> -  // (...)
> -  // Pointers that are declared without pointing to a named address space
> point
> -  // to the generic address space.
> -  if (state.getSema().getLangOpts().OpenCLVersion >= 200 &&
> -      !hasOpenCLAddressSpace && type.getAddressSpace() == 0 &&
> -      (TAL == TAL_DeclSpec || TAL == TAL_DeclChunk)) {
> -    Declarator &D = state.getDeclarator();
> -    if (state.getCurrentChunkIndex() > 0 &&
> -        (D.getTypeObject(state.getCurrentChunkIndex() - 1).Kind ==
> -             DeclaratorChunk::Pointer ||
> -         D.getTypeObject(state.getCurrentChunkIndex() - 1).Kind ==
> -             DeclaratorChunk::BlockPointer)) {
> -      type = state.getSema().Context.getAddrSpaceQualType(
> -          type, LangAS::opencl_generic);
> -    } else if (state.getCurrentChunkIndex() == 0 &&
> -               D.getContext() == Declarator::FileContext &&
> -               !D.isFunctionDeclarator() && !D.isFunctionDefinition() &&
> -               D.getDeclSpec().getStorageClassSpec() !=
> DeclSpec::SCS_typedef &&
> -               !type->isSamplerT())
> -      type = state.getSema().Context.getAddrSpaceQualType(
> -          type, LangAS::opencl_global);
> -    else if (state.getCurrentChunkIndex() == 0 &&
> -             D.getContext() == Declarator::BlockContext &&
> -             D.getDeclSpec().getStorageClassSpec() ==
> DeclSpec::SCS_static)
> -      type = state.getSema().Context.getAddrSpaceQualType(
> -          type, LangAS::opencl_global);
> -  }
> +  if (!state.getSema().getLangOpts().OpenCL ||
> +      type.getAddressSpace() != LangAS::Default)
> +    return;
> +
> +  deduceOpenCLImplicitAddrSpace(state, type, TAL);
>  }
>
>  void Sema::completeExprArrayBound(Expr *E) {
>
> Modified: cfe/trunk/test/CodeGenOpenCL/address-spaces-mangling.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenOpenCL/address-spaces-mangling.cl?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/CodeGenOpenCL/address-spaces-mangling.cl (original)
> +++ cfe/trunk/test/CodeGenOpenCL/address-spaces-mangling.cl Thu Oct 12
> 20:37:48 2017
> @@ -1,5 +1,7 @@
> -// RUN: %clang_cc1 %s -ffake-address-space-map
> -faddress-space-map-mangling=yes -triple %itanium_abi_triple -emit-llvm -o
> - | FileCheck -check-prefix=ASMANG %s
> -// RUN: %clang_cc1 %s -ffake-address-space-map
> -faddress-space-map-mangling=no -triple %itanium_abi_triple -emit-llvm -o -
> | FileCheck -check-prefix=NOASMANG %s
> +// RUN: %clang_cc1 %s -ffake-address-space-map
> -faddress-space-map-mangling=yes -triple %itanium_abi_triple -emit-llvm -o
> - | FileCheck -check-prefixes=ASMANG,ASMAN10 %s
> +// RUN: %clang_cc1 %s -cl-std=CL2.0 -ffake-address-space-map
> -faddress-space-map-mangling=yes -triple %itanium_abi_triple -emit-llvm -o
> - | FileCheck -check-prefixes=ASMANG,ASMAN20 %s
> +// RUN: %clang_cc1 %s -ffake-address-space-map
> -faddress-space-map-mangling=no -triple %itanium_abi_triple -emit-llvm -o -
> | FileCheck -check-prefixes=NOASMANG,NOASMAN10 %s
> +// RUN: %clang_cc1 %s -cl-std=CL2.0 -ffake-address-space-map
> -faddress-space-map-mangling=no -triple %itanium_abi_triple -emit-llvm -o -
> | FileCheck -check-prefixes=NOASMANG,NOASMAN20 %s
>
>  // We check that the address spaces are mangled the same in both version
> of OpenCL
>  // RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=CL2.0
> -emit-llvm -o - | FileCheck -check-prefix=OCL-20 %s
> @@ -10,15 +12,17 @@
>  // warnings, but we do want it for comparison purposes.
>  __attribute__((overloadable))
>  void ff(int *arg) { }
> -// ASMANG: @_Z2ffPi
> -// NOASMANG: @_Z2ffPi
> +// ASMANG10: @_Z2ffPi
> +// ASMANG20: @_Z2ffPU3AS4i
> +// NOASMANG10: @_Z2ffPi
> +// NOASMANG20: @_Z2ffPU9CLgenerici
>  // OCL-20-DAG: @_Z2ffPU3AS4i
>  // OCL-12-DAG: @_Z2ffPi
>
>  __attribute__((overloadable))
>  void f(private int *arg) { }
>  // ASMANG: @_Z1fPi
> -// NOASMANG: @_Z1fPi
> +// NOASMANG: @_Z1fPU9CLprivatei
>  // OCL-20-DAG: @_Z1fPi
>  // OCL-12-DAG: @_Z1fPi
>
> @@ -42,3 +46,11 @@ void f(constant int *arg) { }
>  // NOASMANG: @_Z1fPU10CLconstanti
>  // OCL-20-DAG: @_Z1fPU3AS2i
>  // OCL-12-DAG: @_Z1fPU3AS2i
> +
> +#if __OPENCL_C_VERSION__ >= 200
> +__attribute__((overloadable))
> +void f(generic int *arg) { }
> +// ASMANG20: @_Z1fPU3AS4i
> +// NOASMANG20: @_Z1fPU9CLgenerici
> +// OCL-20-DAG: @_Z1fPU3AS4i
> +#endif
>
> Modified: cfe/trunk/test/CodeGenOpenCL/address-spaces.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenOpenCL/address-spaces.cl?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/CodeGenOpenCL/address-spaces.cl (original)
> +++ cfe/trunk/test/CodeGenOpenCL/address-spaces.cl Thu Oct 12 20:37:48
> 2017
> @@ -7,6 +7,24 @@
>  // RUN: %clang_cc1 %s -O0 -triple amdgcn-mesa-mesa3d -emit-llvm -o - |
> FileCheck --check-prefixes=CHECK,SPIR %s
>  // RUN: %clang_cc1 %s -O0 -triple r600-- -emit-llvm -o - | FileCheck
> --check-prefixes=CHECK,SPIR %s
>
> +// SPIR: %struct.S = type { i32, i32, i32* }
> +// CL20SPIR: %struct.S = type { i32, i32, i32 addrspace(4)* }
> +struct S {
> +  int x;
> +  int y;
> +  int *z;
> +};
> +
> +// CL20-DAG: @g_extern_var = external addrspace(1) global float
> +// CL20-DAG: @l_extern_var = external addrspace(1) global float
> +// CL20-DAG: @test_static.l_static_var = internal addrspace(1) global
> float 0.000000e+00
> +// CL20-DAG: @g_static_var = internal addrspace(1) global float
> 0.000000e+00
> +
> +#ifdef CL20
> +// CL20-DAG: @g_s = common addrspace(1) global %struct.S zeroinitializer
> +struct S g_s;
> +#endif
> +
>  // SPIR: i32* %arg
>  // GIZ: i32 addrspace(5)* %arg
>  void f__p(__private int *arg) {}
> @@ -58,3 +76,52 @@ void f(int *arg) {
>  // CL20-DAG: @f.ii = internal addrspace(1) global i32 0
>  #endif
>  }
> +
> +typedef int int_td;
> +typedef int *intp_td;
> +// SPIR: define void @test_typedef(i32 addrspace(1)* %x, i32
> addrspace(2)* %y, i32* %z)
> +void test_typedef(global int_td *x, constant int_td *y, intp_td z) {
> +  *x = *y;
> +  *z = 0;
> +}
> +
> +// SPIR: define void @test_struct()
> +void test_struct() {
> +  // SPIR: %ps = alloca %struct.S*
> +  // CL20SPIR: %ps = alloca %struct.S addrspace(4)*
> +  struct S *ps;
> +  // SPIR: store i32 0, i32* %x
> +  // CL20SPIR: store i32 0, i32 addrspace(4)* %x
> +  ps->x = 0;
> +#ifdef CL20
> +  // CL20SPIR: store i32 0, i32 addrspace(1)* getelementptr inbounds
> (%struct.S, %struct.S addrspace(1)* @g_s, i32 0, i32 0)
> +  g_s.x = 0;
> +#endif
> +}
> +
> +// SPIR-LABEL: define void @test_void_par()
> +void test_void_par(void) {}
> +
> +// SPIR-LABEL: define i32 @test_func_return_type()
> +int test_func_return_type(void) {
> +  return 0;
> +}
> +
> +#ifdef CL20
> +extern float g_extern_var;
> +
> +// CL20-LABEL: define {{.*}}void @test_extern(
> +kernel void test_extern(global float *buf) {
> +  extern float l_extern_var;
> +  buf[0] += g_extern_var + l_extern_var;
> +}
> +
> +static float g_static_var;
> +
> +// CL20-LABEL: define {{.*}}void @test_static(
> +kernel void test_static(global float *buf) {
> +  static float l_static_var;
> +  buf[0] += g_static_var + l_static_var;
> +}
> +
> +#endif
>
> Modified: cfe/trunk/test/SemaOpenCL/address-spaces.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaOpenCL/address-spaces.cl?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/SemaOpenCL/address-spaces.cl (original)
> +++ cfe/trunk/test/SemaOpenCL/address-spaces.cl Thu Oct 12 20:37:48 2017
> @@ -1,4 +1,5 @@
>  // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only
> +// RUN: %clang_cc1 %s -cl-std=CL2.0 -verify -pedantic -fsyntax-only
>
>  __constant int ci = 1;
>
> @@ -7,9 +8,15 @@ __kernel void foo(__global int *gip) {
>    __local int lj = 2; // expected-error {{'__local' variable cannot have
> an initializer}}
>
>    int *ip;
> +#if __OPENCL_C_VERSION__ < 200
>    ip = gip; // expected-error {{assigning '__global int *' to 'int *'
> changes address space of pointer}}
>    ip = &li; // expected-error {{assigning '__local int *' to 'int *'
> changes address space of pointer}}
>    ip = &ci; // expected-error {{assigning '__constant int *' to 'int *'
> changes address space of pointer}}
> +#else
> +  ip = gip;
> +  ip = &li;
> +  ip = &ci; // expected-error {{assigning '__constant int *' to
> '__generic int *' changes address space of pointer}}
> +#endif
>  }
>
>  void explicit_cast(global int* g, local int* l, constant int* c, private
> int* p, const constant int *cc)
> @@ -40,3 +47,19 @@ void ok_explicit_casts(global int *g, gl
>    l = (local int*) l2;
>    p = (private int*) p2;
>  }
> +
> +__private int func_return_priv(void);       //expected-error {{return
> value cannot be qualified with address space}}
> +__global int func_return_global(void);      //expected-error {{return
> value cannot be qualified with address space}}
> +__local int func_return_local(void);        //expected-error {{return
> value cannot be qualified with address space}}
> +__constant int func_return_constant(void);  //expected-error {{return
> value cannot be qualified with address space}}
> +#if __OPENCL_C_VERSION__ >= 200
> +__generic int func_return_generic(void);    //expected-error {{return
> value cannot be qualified with address space}}
> +#endif
> +
> +void func_multiple_addr(void) {
> +  typedef __private int private_int_t;
> +  __local __private int var1;   // expected-error {{multiple address
> spaces specified for type}}
> +  __local __private int *var2;  // expected-error {{multiple address
> spaces specified for type}}
> +  __local private_int_t var3;   // expected-error {{multiple address
> spaces specified for type}}
> +  __local private_int_t *var4;  // expected-error {{multiple address
> spaces specified for type}}
> +}
>
> Modified: cfe/trunk/test/SemaOpenCL/cl20-device-side-enqueue.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaOpenCL/cl20-device-side-enqueue.cl?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/SemaOpenCL/cl20-device-side-enqueue.cl (original)
> +++ cfe/trunk/test/SemaOpenCL/cl20-device-side-enqueue.cl Thu Oct 12
> 20:37:48 2017
> @@ -222,7 +222,7 @@ kernel void foo(global int *buf)
>
>  kernel void bar(global int *buf)
>  {
> -  ndrange_t n;
> +  __private ndrange_t n;
>    buf[0] = get_kernel_sub_group_count_for_ndrange(n, ^(){});
>    buf[0] = get_kernel_sub_group_count_for_ndrange(0, ^(){}); //
> expected-error{{illegal call to 'get_kernel_sub_group_count_for_ndrange',
> expected 'ndrange_t' argument type}}
>    buf[0] = get_kernel_sub_group_count_for_ndrange(n, 1); //
> expected-error{{illegal call to 'get_kernel_sub_group_count_for_ndrange',
> expected block argument type}}
>
> Removed: cfe/trunk/test/SemaOpenCL/extern.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaOpenCL/extern.cl?rev=315667&view=auto
>
> ==============================================================================
> --- cfe/trunk/test/SemaOpenCL/extern.cl (original)
> +++ cfe/trunk/test/SemaOpenCL/extern.cl (removed)
> @@ -1,9 +0,0 @@
> -// RUN: %clang_cc1 -x cl -cl-opt-disable -cl-std=CL1.2 -emit-llvm
> -ffake-address-space-map %s -o - -verify | FileCheck %s
> -// expected-no-diagnostics
> -
> -// CHECK: @foo = external addrspace(2) constant float
> -extern constant float foo;
> -
> -kernel void test(global float* buf) {
> -  buf[0] += foo;
> -}
>
> Modified: cfe/trunk/test/SemaOpenCL/storageclass-cl20.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaOpenCL/storageclass-cl20.cl?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/SemaOpenCL/storageclass-cl20.cl (original)
> +++ cfe/trunk/test/SemaOpenCL/storageclass-cl20.cl Thu Oct 12 20:37:48
> 2017
> @@ -1,21 +1,41 @@
>  // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL2.0
>
> -static constant int G1 = 0;
>  int G2 = 0;
>  global int G3 = 0;
>  local int G4 = 0;              // expected-error{{program scope variable
> must reside in global or constant address space}}
>
> -void kernel foo() {
> -  static int S1 = 5;
> -  static global int S2 = 5;
> -  static private int S3 = 5;   // expected-error{{static local variable
> must reside in global or constant address space}}
> +static float g_implicit_static_var = 0;
> +static constant float g_constant_static_var = 0;
> +static global float g_global_static_var = 0;
> +static local float g_local_static_var = 0;     // expected-error
> {{program scope variable must reside in global or constant address space}}
> +static private float g_private_static_var = 0; // expected-error
> {{program scope variable must reside in global or constant address space}}
> +static generic float g_generic_static_var = 0; // expected-error
> {{program scope variable must reside in global or constant address space}}
> +
> +extern float g_implicit_extern_var;
> +extern constant float g_constant_extern_var;
> +extern global float g_global_extern_var;
> +extern local float g_local_extern_var;     // expected-error {{extern
> variable must reside in global or constant address space}}
> +extern private float g_private_extern_var; // expected-error {{extern
> variable must reside in global or constant address space}}
> +extern generic float g_generic_extern_var; // expected-error {{extern
> variable must reside in global or constant address space}}
>
> +void kernel foo() {
>    constant int L1 = 0;
>    local int L2;
>    global int L3;                              // expected-error{{function
> scope variable cannot be declared in global address space}}
>    generic int L4;                             //
> expected-error{{automatic variable qualified with an invalid address space}}
>    __attribute__((address_space(100))) int L5; //
> expected-error{{automatic variable qualified with an invalid address space}}
>
> -  extern global int G5;
> -  extern int G6; // expected-error{{extern variable must reside in global
> or constant address space}}
> +  static float l_implicit_static_var = 0;
> +  static constant float l_constant_static_var = 0;
> +  static global float l_global_static_var = 0;
> +  static local float l_local_static_var = 0;     // expected-error
> {{static local variable must reside in global or constant address space}}
> +  static private float l_private_static_var = 0; // expected-error
> {{static local variable must reside in global or constant address space}}
> +  static generic float l_generic_static_var = 0; // expected-error
> {{static local variable must reside in global or constant address space}}
> +
> +  extern float l_implicit_extern_var;
> +  extern constant float l_constant_extern_var;
> +  extern global float l_global_extern_var;
> +  extern local float l_local_extern_var;     // expected-error {{extern
> variable must reside in global or constant address space}}
> +  extern private float l_private_extern_var; // expected-error {{extern
> variable must reside in global or constant address space}}
> +  extern generic float l_generic_extern_var; // expected-error {{extern
> variable must reside in global or constant address space}}
>  }
>
> Modified: cfe/trunk/test/SemaOpenCL/storageclass.cl
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaOpenCL/storageclass.cl?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/SemaOpenCL/storageclass.cl (original)
> +++ cfe/trunk/test/SemaOpenCL/storageclass.cl Thu Oct 12 20:37:48 2017
> @@ -5,6 +5,20 @@ constant int G2 = 0;
>  int G3 = 0;        // expected-error{{program scope variable must reside
> in constant address space}}
>  global int G4 = 0; // expected-error{{program scope variable must reside
> in constant address space}}
>
> +static float g_implicit_static_var = 0; // expected-error {{program scope
> variable must reside in constant address space}}
> +static constant float g_constant_static_var = 0;
> +static global float g_global_static_var = 0;   // expected-error
> {{program scope variable must reside in constant address space}}
> +static local float g_local_static_var = 0;     // expected-error
> {{program scope variable must reside in constant address space}}
> +static private float g_private_static_var = 0; // expected-error
> {{program scope variable must reside in constant address space}}
> +static generic float g_generic_static_var = 0; // expected-error{{OpenCL
> version 1.2 does not support the 'generic' type qualifier}} //
> expected-error {{program scope variable must reside in constant address
> space}}
> +
> +extern float g_implicit_extern_var; // expected-error {{extern variable
> must reside in constant address space}}
> +extern constant float g_constant_extern_var;
> +extern global float g_global_extern_var;   // expected-error {{extern
> variable must reside in constant address space}}
> +extern local float g_local_extern_var;     // expected-error {{extern
> variable must reside in constant address space}}
> +extern private float g_private_extern_var; // expected-error {{extern
> variable must reside in constant address space}}
> +extern generic float g_generic_extern_var; // expected-error{{OpenCL
> version 1.2 does not support the 'generic' type qualifier}} //
> expected-error {{extern variable must reside in constant address space}}
> +
>  void kernel foo(int x) {
>    // static is not allowed at local scope before CL2.0
>    static int S1 = 5;          // expected-error{{variables in function
> scope cannot be declared static}}
> @@ -45,10 +59,17 @@ void f() {
>      __attribute__((address_space(100))) int L4; //
> expected-error{{automatic variable qualified with an invalid address space}}
>    }
>
> -
> -  extern constant float L5;
> -  extern local float L6; // expected-error{{extern variable must reside
> in constant address space}}
> -
> -  static int L7 = 0;     // expected-error{{variables in function scope
> cannot be declared static}}
> -  static int L8;         // expected-error{{variables in function scope
> cannot be declared static}}
> +  static float l_implicit_static_var = 0;          // expected-error
> {{variables in function scope cannot be declared static}}
> +  static constant float l_constant_static_var = 0; // expected-error
> {{variables in function scope cannot be declared static}}
> +  static global float l_global_static_var = 0;     // expected-error
> {{variables in function scope cannot be declared static}}
> +  static local float l_local_static_var = 0;       // expected-error
> {{variables in function scope cannot be declared static}}
> +  static private float l_private_static_var = 0;   // expected-error
> {{variables in function scope cannot be declared static}}
> +  static generic float l_generic_static_var = 0;   //
> expected-error{{OpenCL version 1.2 does not support the 'generic' type
> qualifier}} // expected-error {{variables in function scope cannot be
> declared static}}
> +
> +  extern float l_implicit_extern_var; // expected-error {{extern variable
> must reside in constant address space}}
> +  extern constant float l_constant_extern_var;
> +  extern global float l_global_extern_var;   // expected-error {{extern
> variable must reside in constant address space}}
> +  extern local float l_local_extern_var;     // expected-error {{extern
> variable must reside in constant address space}}
> +  extern private float l_private_extern_var; // expected-error {{extern
> variable must reside in constant address space}}
> +  extern generic float l_generic_extern_var; // expected-error{{OpenCL
> version 1.2 does not support the 'generic' type qualifier}} //
> expected-error {{extern variable must reside in constant address space}}
>  }
>
> Modified: cfe/trunk/test/SemaTemplate/address_space-dependent.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaTemplate/address_space-dependent.cpp?rev=315668&r1=315667&r2=315668&view=diff
>
> ==============================================================================
> --- cfe/trunk/test/SemaTemplate/address_space-dependent.cpp (original)
> +++ cfe/trunk/test/SemaTemplate/address_space-dependent.cpp Thu Oct 12
> 20:37:48 2017
> @@ -43,7 +43,7 @@ void neg() {
>
>  template <long int I>
>  void tooBig() {
> -  __attribute__((address_space(I))) int *bounds; // expected-error
> {{address space is larger than the maximum supported (8388599)}}
> +  __attribute__((address_space(I))) int *bounds; // expected-error
> {{address space is larger than the maximum supported (8388598)}}
>  }
>
>  template <long int I>
> @@ -101,7 +101,7 @@ int main() {
>    car<1, 2, 3>(); // expected-note {{in instantiation of function
> template specialization 'car<1, 2, 3>' requested here}}
>    HasASTemplateFields<1> HASTF;
>    neg<-1>(); // expected-note {{in instantiation of function template
> specialization 'neg<-1>' requested here}}
> -  correct<0x7FFFF7>();
> +  correct<0x7FFFF6>();
>    tooBig<8388650>(); // expected-note {{in instantiation of function
> template specialization 'tooBig<8388650>' requested here}}
>
>    __attribute__((address_space(1))) char *x;
>
>
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>
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