diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -9907,7 +9907,7 @@
 def err_opencl_variadic_function : Error<
   "invalid prototype, variadic arguments are not allowed in OpenCL">;
 def err_opencl_requires_extension : Error<
-  "use of %select{type|declaration}0 %1 requires %2 extension to be enabled">;
+  "use of %select{type|declaration}0 %1 requires %2 support">;
 def warn_opencl_generic_address_space_arg : Warning<
   "passing non-generic address space pointer to %0"
   " may cause dynamic conversion affecting performance">,
diff --git a/clang/include/clang/Basic/OpenCLOptions.h b/clang/include/clang/Basic/OpenCLOptions.h
--- a/clang/include/clang/Basic/OpenCLOptions.h
+++ b/clang/include/clang/Basic/OpenCLOptions.h
@@ -107,7 +107,10 @@
 
   bool isKnown(llvm::StringRef Ext) const;
 
-  bool isEnabled(llvm::StringRef Ext) const;
+  // For core or optional core feature check that it is supported
+  // by a target, for any other option (extension) check that it is
+  // enabled via pragma
+  bool isAvailableOption(llvm::StringRef Ext, const LangOptions &LO) const;
 
   // Is supported as either an extension or an (optional) core feature for
   // OpenCL version \p LO.
@@ -148,15 +151,15 @@
   // Disable all extensions
   void disableAll();
 
-  // Enable supported core and optional core features
-  void enableSupportedCore(const LangOptions &LO);
-
   friend class ASTWriter;
   friend class ASTReader;
 
   using OpenCLOptionInfoMap = llvm::StringMap<OpenCLOptionInfo>;
 
 private:
+  // Option is enabled via pragma
+  bool isEnabled(llvm::StringRef Ext) const;
+
   OpenCLOptionInfoMap OptMap;
 };
 
diff --git a/clang/lib/Basic/OpenCLOptions.cpp b/clang/lib/Basic/OpenCLOptions.cpp
--- a/clang/lib/Basic/OpenCLOptions.cpp
+++ b/clang/lib/Basic/OpenCLOptions.cpp
@@ -14,39 +14,42 @@
   return OptMap.find(Ext) != OptMap.end();
 }
 
+bool OpenCLOptions::isAvailableOption(llvm::StringRef Ext,
+                                      const LangOptions &LO) const {
+  if (!isKnown(Ext))
+    return false;
+
+  auto &OptInfo = OptMap.find(Ext)->getValue();
+  if (OptInfo.isCoreIn(LO) || OptInfo.isOptionalCoreIn(LO))
+    return isSupported(Ext, LO);
+
+  return isEnabled(Ext);
+}
+
 bool OpenCLOptions::isEnabled(llvm::StringRef Ext) const {
-  auto E = OptMap.find(Ext);
-  return E != OptMap.end() && E->second.Enabled;
+  auto I = OptMap.find(Ext);
+  return I != OptMap.end() && I->getValue().Enabled;
 }
 
 bool OpenCLOptions::isSupported(llvm::StringRef Ext,
                                 const LangOptions &LO) const {
-  auto E = OptMap.find(Ext);
-  if (E == OptMap.end()) {
-    return false;
-  }
-  auto I = OptMap.find(Ext)->getValue();
-  return I.Supported && I.isAvailableIn(LO);
+  auto I = OptMap.find(Ext);
+  return I != OptMap.end() && I->getValue().Supported &&
+         I->getValue().isAvailableIn(LO);
 }
 
 bool OpenCLOptions::isSupportedCore(llvm::StringRef Ext,
                                     const LangOptions &LO) const {
-  auto E = OptMap.find(Ext);
-  if (E == OptMap.end()) {
-    return false;
-  }
-  auto I = OptMap.find(Ext)->getValue();
-  return I.Supported && I.isCoreIn(LO);
+  auto I = OptMap.find(Ext);
+  return I != OptMap.end() && I->getValue().Supported &&
+         I->getValue().isCoreIn(LO);
 }
 
 bool OpenCLOptions::isSupportedOptionalCore(llvm::StringRef Ext,
                                             const LangOptions &LO) const {
-  auto E = OptMap.find(Ext);
-  if (E == OptMap.end()) {
-    return false;
-  }
-  auto I = OptMap.find(Ext)->getValue();
-  return I.Supported && I.isOptionalCoreIn(LO);
+  auto I = OptMap.find(Ext);
+  return I != OptMap.end() && I->getValue().Supported &&
+         I->getValue().isOptionalCoreIn(LO);
 }
 
 bool OpenCLOptions::isSupportedCoreOrOptionalCore(llvm::StringRef Ext,
@@ -56,12 +59,9 @@
 
 bool OpenCLOptions::isSupportedExtension(llvm::StringRef Ext,
                                          const LangOptions &LO) const {
-  auto E = OptMap.find(Ext);
-  if (E == OptMap.end()) {
-    return false;
-  }
-  auto I = OptMap.find(Ext)->getValue();
-  return I.Supported && I.isAvailableIn(LO) &&
+  auto I = OptMap.find(Ext);
+  return I != OptMap.end() && I->getValue().Supported &&
+         I->getValue().isAvailableIn(LO) &&
          !isSupportedCoreOrOptionalCore(Ext, LO);
 }
 
@@ -97,10 +97,4 @@
     Opt.getValue().Enabled = false;
 }
 
-void OpenCLOptions::enableSupportedCore(const LangOptions &LO) {
-  for (auto &Opt : OptMap)
-    if (isSupportedCoreOrOptionalCore(Opt.getKey(), LO))
-      Opt.getValue().Enabled = true;
-}
-
 } // end namespace clang
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -3646,8 +3646,8 @@
       // C++ for OpenCL does not allow virtual function qualifier, to avoid
       // function pointers restricted in OpenCL v2.0 s6.9.a.
       if (getLangOpts().OpenCLCPlusPlus &&
-          !getActions().getOpenCLOptions().isEnabled(
-              "__cl_clang_function_pointers")) {
+          !getActions().getOpenCLOptions().isAvailableOption(
+              "__cl_clang_function_pointers", getLangOpts())) {
         DiagID = diag::err_openclcxx_virtual_function;
         PrevSpec = Tok.getIdentifierInfo()->getNameStart();
         isInvalid = true;
diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -1807,8 +1807,9 @@
   // These can be followed by postfix-expr pieces.
   PreferredType = SavedType;
   Res = ParsePostfixExpressionSuffix(Res);
-  if (getLangOpts().OpenCL && !getActions().getOpenCLOptions().isEnabled(
-                                  "__cl_clang_function_pointers"))
+  if (getLangOpts().OpenCL &&
+      !getActions().getOpenCLOptions().isAvailableOption(
+          "__cl_clang_function_pointers", getLangOpts()))
     if (Expr *PostfixExpr = Res.get()) {
       QualType Ty = PostfixExpr->getType();
       if (!Ty.isNull() && Ty->isFunctionType()) {
diff --git a/clang/lib/Parse/ParsePragma.cpp b/clang/lib/Parse/ParsePragma.cpp
--- a/clang/lib/Parse/ParsePragma.cpp
+++ b/clang/lib/Parse/ParsePragma.cpp
@@ -771,12 +771,10 @@
   // overriding all previously issued extension directives, but only if the
   // behavior is set to disable."
   if (Name == "all") {
-    if (State == Disable) {
+    if (State == Disable)
       Opt.disableAll();
-      Opt.enableSupportedCore(getLangOpts());
-    } else {
+    else
       PP.Diag(NameLoc, diag::warn_pragma_expected_predicate) << 1;
-    }
   } else if (State == Begin) {
     if (!Opt.isKnown(Name) || !Opt.isSupported(Name, getLangOpts())) {
       Opt.support(Name);
diff --git a/clang/lib/Sema/DeclSpec.cpp b/clang/lib/Sema/DeclSpec.cpp
--- a/clang/lib/Sema/DeclSpec.cpp
+++ b/clang/lib/Sema/DeclSpec.cpp
@@ -625,7 +625,8 @@
   // OpenCL v1.2 s6.8 changes this to "The auto and register storage-class
   // specifiers are not supported."
   if (S.getLangOpts().OpenCL &&
-      !S.getOpenCLOptions().isEnabled("cl_clang_storage_class_specifiers")) {
+      !S.getOpenCLOptions().isAvailableOption(
+          "cl_clang_storage_class_specifiers", S.getLangOpts())) {
     switch (SC) {
     case SCS_extern:
     case SCS_private_extern:
diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -299,7 +299,6 @@
   if (getLangOpts().OpenCL) {
     getOpenCLOptions().addSupport(
         Context.getTargetInfo().getSupportedOpenCLOpts(), getLangOpts());
-    getOpenCLOptions().enableSupportedCore(getLangOpts());
     addImplicitTypedef("sampler_t", Context.OCLSamplerTy);
     addImplicitTypedef("event_t", Context.OCLEventTy);
     if (getLangOpts().OpenCLCPlusPlus || getLangOpts().OpenCLVersion >= 200) {
@@ -309,25 +308,13 @@
       addImplicitTypedef("atomic_int", Context.getAtomicType(Context.IntTy));
       addImplicitTypedef("atomic_uint",
                          Context.getAtomicType(Context.UnsignedIntTy));
-      auto AtomicLongT = Context.getAtomicType(Context.LongTy);
-      addImplicitTypedef("atomic_long", AtomicLongT);
-      auto AtomicULongT = Context.getAtomicType(Context.UnsignedLongTy);
-      addImplicitTypedef("atomic_ulong", AtomicULongT);
       addImplicitTypedef("atomic_float",
                          Context.getAtomicType(Context.FloatTy));
-      auto AtomicDoubleT = Context.getAtomicType(Context.DoubleTy);
-      addImplicitTypedef("atomic_double", AtomicDoubleT);
       // OpenCLC v2.0, s6.13.11.6 requires that atomic_flag is implemented as
       // 32-bit integer and OpenCLC v2.0, s6.1.1 int is always 32-bit wide.
       addImplicitTypedef("atomic_flag", Context.getAtomicType(Context.IntTy));
-      auto AtomicIntPtrT = Context.getAtomicType(Context.getIntPtrType());
-      addImplicitTypedef("atomic_intptr_t", AtomicIntPtrT);
-      auto AtomicUIntPtrT = Context.getAtomicType(Context.getUIntPtrType());
-      addImplicitTypedef("atomic_uintptr_t", AtomicUIntPtrT);
       auto AtomicSizeT = Context.getAtomicType(Context.getSizeType());
       addImplicitTypedef("atomic_size_t", AtomicSizeT);
-      auto AtomicPtrDiffT = Context.getAtomicType(Context.getPointerDiffType());
-      addImplicitTypedef("atomic_ptrdiff_t", AtomicPtrDiffT);
 
       // OpenCL v2.0 s6.13.11.6:
       // - The atomic_long and atomic_ulong types are supported if the
@@ -341,20 +328,41 @@
       //   atomic_ptrdiff_t are supported if the cl_khr_int64_base_atomics and
       //   cl_khr_int64_extended_atomics extensions are supported.
       std::vector<QualType> Atomic64BitTypes;
-      Atomic64BitTypes.push_back(AtomicLongT);
-      Atomic64BitTypes.push_back(AtomicULongT);
-      Atomic64BitTypes.push_back(AtomicDoubleT);
-      if (Context.getTypeSize(AtomicSizeT) == 64) {
-        Atomic64BitTypes.push_back(AtomicSizeT);
-        Atomic64BitTypes.push_back(AtomicIntPtrT);
-        Atomic64BitTypes.push_back(AtomicUIntPtrT);
-        Atomic64BitTypes.push_back(AtomicPtrDiffT);
+      if (getOpenCLOptions().isSupported("cl_khr_fp64", getLangOpts())) {
+        auto AtomicDoubleT = Context.getAtomicType(Context.DoubleTy);
+        addImplicitTypedef("atomic_double", AtomicDoubleT);
+        Atomic64BitTypes.push_back(AtomicDoubleT);
       }
+      if (getOpenCLOptions().isSupported("cl_khr_int64_base_atomics",
+                                         getLangOpts()) &&
+          getOpenCLOptions().isSupported("cl_khr_int64_extended_atomics",
+                                         getLangOpts())) {
+        auto AtomicLongT = Context.getAtomicType(Context.LongTy);
+        auto AtomicULongT = Context.getAtomicType(Context.UnsignedLongTy);
+        auto AtomicIntPtrT = Context.getAtomicType(Context.getIntPtrType());
+        auto AtomicUIntPtrT = Context.getAtomicType(Context.getUIntPtrType());
+        auto AtomicPtrDiffT =
+            Context.getAtomicType(Context.getPointerDiffType());
+
+        addImplicitTypedef("atomic_long", AtomicLongT);
+        addImplicitTypedef("atomic_ulong", AtomicULongT);
+        addImplicitTypedef("atomic_intptr_t", AtomicIntPtrT);
+        addImplicitTypedef("atomic_uintptr_t", AtomicUIntPtrT);
+        addImplicitTypedef("atomic_ptrdiff_t", AtomicPtrDiffT);
+
+        Atomic64BitTypes.push_back(AtomicLongT);
+        Atomic64BitTypes.push_back(AtomicULongT);
+        if (Context.getTypeSize(AtomicSizeT) == 64) {
+          Atomic64BitTypes.push_back(AtomicSizeT);
+          Atomic64BitTypes.push_back(AtomicIntPtrT);
+          Atomic64BitTypes.push_back(AtomicUIntPtrT);
+          Atomic64BitTypes.push_back(AtomicPtrDiffT);
+        }
+      }
+
       for (auto &I : Atomic64BitTypes)
         setOpenCLExtensionForType(I,
             "cl_khr_int64_base_atomics cl_khr_int64_extended_atomics");
-
-      setOpenCLExtensionForType(AtomicDoubleT, "cl_khr_fp64");
     }
 
     setOpenCLExtensionForType(Context.DoubleTy, "cl_khr_fp64");
@@ -362,9 +370,11 @@
 #define GENERIC_IMAGE_TYPE_EXT(Type, Id, Ext) \
     setOpenCLExtensionForType(Context.Id, Ext);
 #include "clang/Basic/OpenCLImageTypes.def"
-#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
-    addImplicitTypedef(#ExtType, Context.Id##Ty); \
-    setOpenCLExtensionForType(Context.Id##Ty, #Ext);
+#define EXT_OPAQUE_TYPE(ExtType, Id, Ext)                                      \
+  if (getOpenCLOptions().isSupported(#Ext, getLangOpts())) {                   \
+    addImplicitTypedef(#ExtType, Context.Id##Ty);                              \
+    setOpenCLExtensionForType(Context.Id##Ty, #Ext);                           \
+  }
 #include "clang/Basic/OpenCLExtensionTypes.def"
   }
 
@@ -2511,7 +2521,7 @@
   if (Loc == OpenCLDeclExtMap.end())
     return false;
   for (auto &I : Loc->second) {
-    if (!getOpenCLOptions().isEnabled(I))
+    if (!getOpenCLOptions().isAvailableOption(I, getLangOpts()))
       return true;
   }
   return false;
@@ -2527,7 +2537,8 @@
     return false;
   bool Disabled = false;
   for (auto &I : Loc->second) {
-    if (I != CurrOpenCLExtension && !getOpenCLOptions().isEnabled(I)) {
+    if (I != CurrOpenCLExtension &&
+        !getOpenCLOptions().isAvailableOption(I, getLangOpts())) {
       Diag(DiagLoc, diag::err_opencl_requires_extension) << Selector << DiagInfo
                                                          << I << SrcRange;
       Disabled = true;
diff --git a/clang/lib/Sema/SemaCast.cpp b/clang/lib/Sema/SemaCast.cpp
--- a/clang/lib/Sema/SemaCast.cpp
+++ b/clang/lib/Sema/SemaCast.cpp
@@ -2916,8 +2916,8 @@
     }
   }
 
-  if (Self.getLangOpts().OpenCL &&
-      !Self.getOpenCLOptions().isEnabled("cl_khr_fp16")) {
+  if (Self.getLangOpts().OpenCL && !Self.getOpenCLOptions().isAvailableOption(
+                                       "cl_khr_fp16", Self.getLangOpts())) {
     if (DestType->isHalfType()) {
       Self.Diag(SrcExpr.get()->getBeginLoc(), diag::err_opencl_cast_to_half)
           << DestType << SrcExpr.get()->getSourceRange();
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -837,7 +837,8 @@
 }
 
 static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) {
-  if (!S.getOpenCLOptions().isEnabled("cl_khr_subgroups")) {
+  if (!S.getOpenCLOptions().isAvailableOption("cl_khr_subgroups",
+                                              S.getLangOpts())) {
     S.Diag(Call->getBeginLoc(), diag::err_opencl_requires_extension)
         << 1 << Call->getDirectCallee() << "cl_khr_subgroups";
     return true;
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -6750,7 +6750,8 @@
   }
 
   // OpenCL v1.0 s6.8.a.3: Pointers to functions are not allowed.
-  if (!Se.getOpenCLOptions().isEnabled("__cl_clang_function_pointers")) {
+  if (!Se.getOpenCLOptions().isAvailableOption("__cl_clang_function_pointers",
+                                               Se.getLangOpts())) {
     QualType NR = R.getCanonicalType();
     while (NR->isPointerType() || NR->isMemberFunctionPointerType() ||
            NR->isReferenceType()) {
@@ -6765,7 +6766,8 @@
     }
   }
 
-  if (!Se.getOpenCLOptions().isEnabled("cl_khr_fp16")) {
+  if (!Se.getOpenCLOptions().isAvailableOption("cl_khr_fp16",
+                                               Se.getLangOpts())) {
     // OpenCL v1.2 s6.1.1.1: reject declaring variables of the half and
     // half array type (unless the cl_khr_fp16 extension is enabled).
     if (Se.Context.getBaseElementType(R)->isHalfType()) {
@@ -7888,7 +7890,8 @@
   // OpenCL v1.2 s6.8 - The static qualifier is valid only in program
   // scope.
   if (getLangOpts().OpenCLVersion == 120 &&
-      !getOpenCLOptions().isEnabled("cl_clang_storage_class_specifiers") &&
+      !getOpenCLOptions().isAvailableOption("cl_clang_storage_class_specifiers",
+                                            getLangOpts()) &&
       NewVD->isStaticLocal()) {
     Diag(NewVD->getLocation(), diag::err_static_function_scope);
     NewVD->setInvalidDecl();
@@ -8660,7 +8663,8 @@
   // OpenCL extension spec v1.2 s9.5:
   // This extension adds support for half scalar and vector types as built-in
   // types that can be used for arithmetic operations, conversions etc.
-  if (!S.getOpenCLOptions().isEnabled("cl_khr_fp16") && PT->isHalfType())
+  if (!S.getOpenCLOptions().isAvailableOption("cl_khr_fp16", S.getLangOpts()) &&
+      PT->isHalfType())
     return InvalidKernelParam;
 
   if (PT->isRecordType())
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -657,7 +657,8 @@
     return E;
 
   // OpenCL usually rejects direct accesses to values of 'half' type.
-  if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp16") &&
+  if (getLangOpts().OpenCL &&
+      !getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()) &&
       T->isHalfType()) {
     Diag(E->getExprLoc(), diag::err_opencl_half_load_store)
       << 0 << T;
@@ -829,10 +830,10 @@
   if (BTy && (BTy->getKind() == BuiltinType::Half ||
               BTy->getKind() == BuiltinType::Float)) {
     if (getLangOpts().OpenCL &&
-        !getOpenCLOptions().isEnabled("cl_khr_fp64")) {
-        if (BTy->getKind() == BuiltinType::Half) {
-            E = ImpCastExprToType(E, Context.FloatTy, CK_FloatingCast).get();
-        }
+        !getOpenCLOptions().isAvailableOption("cl_khr_fp64", getLangOpts())) {
+      if (BTy->getKind() == BuiltinType::Half) {
+        E = ImpCastExprToType(E, Context.FloatTy, CK_FloatingCast).get();
+      }
     } else {
       E = ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast).get();
     }
@@ -3819,7 +3820,7 @@
   } else if (Literal.isFloatingLiteral()) {
     QualType Ty;
     if (Literal.isHalf){
-      if (getOpenCLOptions().isEnabled("cl_khr_fp16"))
+      if (getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()))
         Ty = Context.HalfTy;
       else {
         Diag(Tok.getLocation(), diag::err_half_const_requires_fp16);
@@ -3843,8 +3844,8 @@
         if (Ty->castAs<BuiltinType>()->getKind() != BuiltinType::Float) {
           Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get();
         }
-      } else if (getLangOpts().OpenCL &&
-                 !getOpenCLOptions().isEnabled("cl_khr_fp64")) {
+      } else if (getLangOpts().OpenCL && !getOpenCLOptions().isAvailableOption(
+                                             "cl_khr_fp64", getLangOpts())) {
         // Impose single-precision float type when cl_khr_fp64 is not enabled.
         Diag(Tok.getLocation(), diag::warn_double_const_requires_fp64);
         Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get();
@@ -12907,8 +12908,9 @@
   // OpenCL v1.2 s6.1.1.1 p2:
   // The half data type can only be used to declare a pointer to a buffer that
   // contains half values
-  if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp16") &&
-    LHSType->isHalfType()) {
+  if (getLangOpts().OpenCL &&
+      !getOpenCLOptions().isAvailableOption("cl_khr_fp16", getLangOpts()) &&
+      LHSType->isHalfType()) {
     Diag(Loc, diag::err_opencl_half_load_store) << 1
         << LHSType.getUnqualifiedType();
     return QualType();
diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -5607,8 +5607,8 @@
   // We should allow zero initialization for all types defined in the
   // cl_intel_device_side_avc_motion_estimation extension, except
   // intel_sub_group_avc_mce_payload_t and intel_sub_group_avc_mce_result_t.
-  if (S.getOpenCLOptions().isEnabled(
-          "cl_intel_device_side_avc_motion_estimation") &&
+  if (S.getOpenCLOptions().isAvailableOption(
+          "cl_intel_device_side_avc_motion_estimation", S.getLangOpts()) &&
       DestType->isOCLIntelSubgroupAVCType()) {
     if (DestType->isOCLIntelSubgroupAVCMcePayloadType() ||
         DestType->isOCLIntelSubgroupAVCMceResultType())
@@ -8796,8 +8796,8 @@
         unsigned AddressingMode  = (0x0E & SamplerValue) >> 1;
         unsigned FilterMode      = (0x30 & SamplerValue) >> 4;
         if (FilterMode != 1 && FilterMode != 2 &&
-            !S.getOpenCLOptions().isEnabled(
-                "cl_intel_device_side_avc_motion_estimation"))
+            !S.getOpenCLOptions().isAvailableOption(
+                "cl_intel_device_side_avc_motion_estimation", S.getLangOpts()))
           S.Diag(Kind.getLocation(),
                  diag::warn_sampler_initializer_invalid_bits)
                  << "Filter Mode";
diff --git a/clang/lib/Sema/SemaType.cpp b/clang/lib/Sema/SemaType.cpp
--- a/clang/lib/Sema/SemaType.cpp
+++ b/clang/lib/Sema/SemaType.cpp
@@ -2089,7 +2089,8 @@
   }
 
   if (T->isFunctionType() && getLangOpts().OpenCL &&
-      !getOpenCLOptions().isEnabled("__cl_clang_function_pointers")) {
+      !getOpenCLOptions().isAvailableOption("__cl_clang_function_pointers",
+                                            getLangOpts())) {
     Diag(Loc, diag::err_opencl_function_pointer) << /*pointer*/ 0;
     return QualType();
   }
@@ -2163,7 +2164,8 @@
     return QualType();
 
   if (T->isFunctionType() && getLangOpts().OpenCL &&
-      !getOpenCLOptions().isEnabled("__cl_clang_function_pointers")) {
+      !getOpenCLOptions().isAvailableOption("__cl_clang_function_pointers",
+                                            getLangOpts())) {
     Diag(Loc, diag::err_opencl_function_pointer) << /*reference*/ 1;
     return QualType();
   }
@@ -2895,7 +2897,8 @@
   }
 
   if (T->isFunctionType() && getLangOpts().OpenCL &&
-      !getOpenCLOptions().isEnabled("__cl_clang_function_pointers")) {
+      !getOpenCLOptions().isAvailableOption("__cl_clang_function_pointers",
+                                            getLangOpts())) {
     Diag(Loc, diag::err_opencl_function_pointer) << /*pointer*/ 0;
     return QualType();
   }
@@ -5005,7 +5008,8 @@
       // FIXME: This really should be in BuildFunctionType.
       if (T->isHalfType()) {
         if (S.getLangOpts().OpenCL) {
-          if (!S.getOpenCLOptions().isEnabled("cl_khr_fp16")) {
+          if (!S.getOpenCLOptions().isAvailableOption("cl_khr_fp16",
+                                                      S.getLangOpts())) {
             S.Diag(D.getIdentifierLoc(), diag::err_opencl_invalid_return)
                 << T << 0 /*pointer hint*/;
             D.setInvalidType(true);
@@ -5030,7 +5034,8 @@
         // (s6.9.e and s6.12.5 OpenCL v2.0) except for printf.
         // We also allow here any toolchain reserved identifiers.
         if (FTI.isVariadic &&
-            !S.getOpenCLOptions().isEnabled("__cl_clang_variadic_functions") &&
+            !S.getOpenCLOptions().isAvailableOption(
+                "__cl_clang_variadic_functions", S.getLangOpts()) &&
             !(D.getIdentifier() &&
               ((D.getIdentifier()->getName() == "printf" &&
                 (LangOpts.OpenCLCPlusPlus || LangOpts.OpenCLVersion >= 120)) ||
@@ -5225,7 +5230,8 @@
             // Disallow half FP parameters.
             // FIXME: This really should be in BuildFunctionType.
             if (S.getLangOpts().OpenCL) {
-              if (!S.getOpenCLOptions().isEnabled("cl_khr_fp16")) {
+              if (!S.getOpenCLOptions().isAvailableOption("cl_khr_fp16",
+                                                          S.getLangOpts())) {
                 S.Diag(Param->getLocation(), diag::err_opencl_invalid_param)
                     << ParamTy << 0;
                 D.setInvalidType();
diff --git a/clang/test/Parser/opencl-atomics-cl20.cl b/clang/test/Parser/opencl-atomics-cl20.cl
--- a/clang/test/Parser/opencl-atomics-cl20.cl
+++ b/clang/test/Parser/opencl-atomics-cl20.cl
@@ -42,21 +42,21 @@
 // expected-error@-16 {{use of undeclared identifier 'atomic_size_t'}}
 // expected-error@-16 {{use of undeclared identifier 'atomic_ptrdiff_t'}}
 #elif !EXT
-// expected-error@-26 {{use of type 'atomic_long' (aka '_Atomic(long)') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error@-27 {{use of type 'atomic_long' (aka '_Atomic(long)') requires cl_khr_int64_extended_atomics extension to be enabled}}
-// expected-error@-27 {{use of type 'atomic_ulong' (aka '_Atomic(unsigned long)') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error@-28 {{use of type 'atomic_ulong' (aka '_Atomic(unsigned long)') requires cl_khr_int64_extended_atomics extension to be enabled}}
-// expected-error@-27 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error@-28 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error@-26 {{use of type 'atomic_long' (aka '_Atomic(long)') requires cl_khr_int64_base_atomics support}}
+// expected-error@-27 {{use of type 'atomic_long' (aka '_Atomic(long)') requires cl_khr_int64_extended_atomics support}}
+// expected-error@-27 {{use of type 'atomic_ulong' (aka '_Atomic(unsigned long)') requires cl_khr_int64_base_atomics support}}
+// expected-error@-28 {{use of type 'atomic_ulong' (aka '_Atomic(unsigned long)') requires cl_khr_int64_extended_atomics support}}
+// expected-error@-27 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_int64_base_atomics support}}
+// expected-error@-28 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_int64_extended_atomics support}}
 #if __LP64__
-// expected-error-re@-28 {{use of type 'atomic_intptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error-re@-29 {{use of type 'atomic_intptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
-// expected-error-re@-29 {{use of type 'atomic_uintptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error-re@-30 {{use of type 'atomic_uintptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
-// expected-error-re@-30 {{use of type 'atomic_size_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error-re@-31 {{use of type 'atomic_size_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
-// expected-error-re@-31 {{use of type 'atomic_ptrdiff_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
-// expected-error-re@-32 {{use of type 'atomic_ptrdiff_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error-re@-28 {{use of type 'atomic_intptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics support}}
+// expected-error-re@-29 {{use of type 'atomic_intptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics support}}
+// expected-error-re@-29 {{use of type 'atomic_uintptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics support}}
+// expected-error-re@-30 {{use of type 'atomic_uintptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics support}}
+// expected-error-re@-30 {{use of type 'atomic_size_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics support}}
+// expected-error-re@-31 {{use of type 'atomic_size_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics support}}
+// expected-error-re@-31 {{use of type 'atomic_ptrdiff_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics support}}
+// expected-error-re@-32 {{use of type 'atomic_ptrdiff_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics support}}
 #endif
 #endif
 
diff --git a/clang/test/SemaOpenCL/access-qualifier.cl b/clang/test/SemaOpenCL/access-qualifier.cl
--- a/clang/test/SemaOpenCL/access-qualifier.cl
+++ b/clang/test/SemaOpenCL/access-qualifier.cl
@@ -76,7 +76,7 @@
 #endif
 
 #if __OPENCL_C_VERSION__ < 200
-kernel void test_image3d_wo(write_only image3d_t img) {} // expected-error {{use of type '__write_only image3d_t' requires cl_khr_3d_image_writes extension to be enabled}}
+kernel void test_image3d_wo(write_only image3d_t img) {} // expected-error {{use of type '__write_only image3d_t' requires cl_khr_3d_image_writes support}}
 #endif
 
 #if __OPENCL_C_VERSION__ >= 200
diff --git a/clang/test/SemaOpenCL/cl20-device-side-enqueue.cl b/clang/test/SemaOpenCL/cl20-device-side-enqueue.cl
--- a/clang/test/SemaOpenCL/cl20-device-side-enqueue.cl
+++ b/clang/test/SemaOpenCL/cl20-device-side-enqueue.cl
@@ -235,11 +235,11 @@
 kernel void foo1(global unsigned int *buf)
 {
   ndrange_t n;
-  buf[0] = get_kernel_max_sub_group_size_for_ndrange(n, ^(){}); // expected-error {{use of declaration 'get_kernel_max_sub_group_size_for_ndrange' requires cl_khr_subgroups extension to be enabled}}
+  buf[0] = get_kernel_max_sub_group_size_for_ndrange(n, ^(){}); // expected-error {{use of declaration 'get_kernel_max_sub_group_size_for_ndrange' requires cl_khr_subgroups support}}
 }
 
 kernel void bar1(global unsigned int *buf)
 {
   ndrange_t n;
-  buf[0] = get_kernel_sub_group_count_for_ndrange(n, ^(){}); // expected-error {{use of declaration 'get_kernel_sub_group_count_for_ndrange' requires cl_khr_subgroups extension to be enabled}}
+  buf[0] = get_kernel_sub_group_count_for_ndrange(n, ^(){}); // expected-error {{use of declaration 'get_kernel_sub_group_count_for_ndrange' requires cl_khr_subgroups support}}
 }
diff --git a/clang/test/SemaOpenCL/extension-begin.cl b/clang/test/SemaOpenCL/extension-begin.cl
--- a/clang/test/SemaOpenCL/extension-begin.cl
+++ b/clang/test/SemaOpenCL/extension-begin.cl
@@ -41,11 +41,11 @@
 
 #pragma OPENCL EXTENSION my_ext : disable 
 void test_f2(void) {
-  struct A test_A2; // expected-error {{use of type 'struct A' requires my_ext extension to be enabled}}
-  const struct A test_A_local; // expected-error {{use of type 'struct A' requires my_ext extension to be enabled}}
-  TypedefOfA test_typedef_A; // expected-error {{use of type 'TypedefOfA' (aka 'struct A') requires my_ext extension to be enabled}}
-  PointerOfA test_A_pointer; // expected-error {{use of type 'PointerOfA' (aka 'const __private struct A *') requires my_ext extension to be enabled}}
-  f(); // expected-error {{use of declaration 'f' requires my_ext extension to be enabled}}
+  struct A test_A2; // expected-error {{use of type 'struct A' requires my_ext support}}
+  const struct A test_A_local; // expected-error {{use of type 'struct A' requires my_ext support}}
+  TypedefOfA test_typedef_A; // expected-error {{use of type 'TypedefOfA' (aka 'struct A') requires my_ext support}}
+  PointerOfA test_A_pointer; // expected-error {{use of type 'PointerOfA' (aka 'const __private struct A *') requires my_ext support}}
+  f(); // expected-error {{use of declaration 'f' requires my_ext support}}
   g(0); // expected-error {{no matching function for call to 'g'}}
         // expected-note@extension-begin.h:18 {{candidate unavailable as it requires OpenCL extension 'my_ext' to be enabled}}
         // expected-note@extension-begin.h:23 {{candidate function not viable: requires 0 arguments, but 1 was provided}}
diff --git a/clang/test/SemaOpenCL/extensions.cl b/clang/test/SemaOpenCL/extensions.cl
--- a/clang/test/SemaOpenCL/extensions.cl
+++ b/clang/test/SemaOpenCL/extensions.cl
@@ -43,8 +43,8 @@
 #endif
 
 #if (defined(__OPENCL_C_VERSION__) && __OPENCL_C_VERSION__ < 120)
-void f1(double da) { // expected-error {{type 'double' requires cl_khr_fp64 extension}}
-  double d; // expected-error {{type 'double' requires cl_khr_fp64 extension}}
+void f1(double da) { // expected-error {{type 'double' requires cl_khr_fp64 support}}
+  double d; // expected-error {{type 'double' requires cl_khr_fp64 support}}
   (void) 1.0; // expected-warning {{double precision constant requires cl_khr_fp64}}
 }
 #endif
@@ -72,14 +72,14 @@
 void f2(void) {
   double d;
 #ifdef NOFP64
-// expected-error@-2{{use of type 'double' requires cl_khr_fp64 extension to be enabled}}
+// expected-error@-2{{use of type 'double' requires cl_khr_fp64 support}}
 #endif
 
   typedef double double4 __attribute__((ext_vector_type(4)));
   double4 d4 = {0.0f, 2.0f, 3.0f, 1.0f};
 #ifdef NOFP64
-// expected-error@-3 {{use of type 'double' requires cl_khr_fp64 extension to be enabled}}
-// expected-error@-3 {{use of type 'double4' (vector of 4 'double' values) requires cl_khr_fp64 extension to be enabled}}
+// expected-error@-3 {{use of type 'double' requires cl_khr_fp64 support}}
+// expected-error@-3 {{use of type 'double4' (vector of 4 'double' values) requires cl_khr_fp64 support}}
 #endif
 
   (void) 1.0;
@@ -96,6 +96,6 @@
 
 #if (defined(__OPENCL_C_VERSION__) && __OPENCL_C_VERSION__ < 120)
 void f3(void) {
-  double d; // expected-error {{type 'double' requires cl_khr_fp64 extension}}
+  double d; // expected-error {{type 'double' requires cl_khr_fp64 support}}
 }
 #endif