diff --git a/clang/include/clang/Basic/Builtins.td b/clang/include/clang/Basic/Builtins.td
index 2c83dca248fb7..384442e6a9359 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -12,13 +12,17 @@ class FPMathTemplate : Template<["float", "double", "long double"],
                                 ["f",     "",       "l"]>;
 
 class FPMathWithF16Template :
-    Template<["float", "double", "long double", "__fp16", "__float128"],
-             ["f",     "",       "l",           "f16",    "f128"]>;
+    Template<["float", "double", "long double", "__fp16"],
+             ["f",     "",       "l",           "f16"]>;
 
 class FPMathWithF16F128Template :
     Template<["float", "double", "long double", "__fp16", "__float128"],
              ["f",     "",       "l",           "f16",    "f128"]>;
 
+class FPMathWithF128Template :
+    Template<["float", "double", "long double", "__float128"],
+             ["f",     "",       "l",           "f128"]>;
+
 class F16F128MathTemplate : Template<["__fp16", "__float128"],
                                      ["f16",    "f128"]>;
 
@@ -253,18 +257,30 @@ def FrexpF16F128 : F16F128MathTemplate, Builtin {
   let Prototype = "T(T, int*)";
 }
 
-def HugeVal : Builtin, FPMathWithF16F128Template {
+def HugeVal : Builtin, FPMathWithF128Template {
   let Spellings = ["__builtin_huge_val"];
   let Attributes = [NoThrow, Const, Constexpr];
   let Prototype = "T()";
 }
 
-def Inf : Builtin, FPMathWithF16F128Template {
+def HugeValF16 : Builtin {
+       let Spellings = ["__builtin_huge_valf16"];
+  let Attributes = [NoThrow, Const, Constexpr];
+  let Prototype = "_Float16()";
+}
+
+def Inf : Builtin, FPMathWithF128Template {
   let Spellings = ["__builtin_inf"];
   let Attributes = [NoThrow, Const, Constexpr];
   let Prototype = "T()";
 }
 
+def InfF16 : Builtin {
+  let Spellings = ["__builtin_inff16"];
+  let Attributes = [NoThrow, Const, Constexpr];
+  let Prototype = "_Float16()";
+}
+
 def LdexpF16F128 : F16F128MathTemplate, Builtin {
   let Spellings = ["__builtin_ldexp"];
   let Attributes = [FunctionWithBuiltinPrefix, NoThrow, ConstIgnoringErrnoAndExceptions];
@@ -1550,7 +1566,7 @@ def SyncBoolCompareAndSwap : Builtin {
 def SyncBoolCompareAndSwapN : Builtin, SyncBuiltinsTemplate {
   let Spellings = ["__sync_bool_compare_and_swap_"];
   let Attributes = [CustomTypeChecking, NoThrow];
-  let Prototype = "T(T volatile*, T, ...)";
+  let Prototype = "bool(T volatile*, T, T, ...)";
 }
 
 def SyncValCompareAndSwap : Builtin {
@@ -1562,7 +1578,7 @@ def SyncValCompareAndSwap : Builtin {
 def SynLockValCompareAndSwapN : Builtin, SyncBuiltinsTemplate {
   let Spellings = ["__sync_val_compare_and_swap_"];
   let Attributes = [CustomTypeChecking, NoThrow];
-  let Prototype = "T(T volatile*, T, ...)";
+  let Prototype = "T(T volatile*, T, T, ...)";
 }
 
 def SyncLockTestAndSet : Builtin {
@@ -1577,16 +1593,16 @@ def SynLockLockTestAndSetN : Builtin, SyncBuiltinsTemplate {
   let Prototype = "T(T volatile*, T, ...)";
 }
 
-def SyncLockReleaseN : Builtin {
+def SyncLockRelease : Builtin {
   let Spellings = ["__sync_lock_release"];
   let Attributes = [CustomTypeChecking];
   let Prototype = "void(...)";
 }
 
-def SynLockReleaseN : Builtin, SyncBuiltinsTemplate {
+def SyncLockReleaseN : Builtin, SyncBuiltinsTemplate {
   let Spellings = ["__sync_lock_release_"];
   let Attributes = [CustomTypeChecking, NoThrow];
-  let Prototype = "T(T volatile*, T, ...)";
+  let Prototype = "void(T volatile*, ...)";
 }
 
 def SyncSwap : Builtin {
@@ -2569,6 +2585,13 @@ def Abort : LibBuiltin<"stdlib.h"> {
   let AddBuiltinPrefixedAlias = 1;
 }
 
+def Abs : IntMathTemplate, LibBuiltin<"stdlib.h"> {
+  let Spellings = ["abs"];
+  let Attributes = [NoThrow, Const];
+  let Prototype = "T(T)";
+  let AddBuiltinPrefixedAlias = 1;
+}
+
 def Calloc : LibBuiltin<"stdlib.h"> {
   let Spellings = ["calloc"];
   let Prototype = "void*(size_t, size_t)";
@@ -3085,38 +3108,38 @@ def MemAlign : GNULibBuiltin<"malloc.h"> {
 
 // POSIX string.h
 
-def MemcCpy : GNULibBuiltin<"stdlib.h"> {
+def MemcCpy : GNULibBuiltin<"string.h"> {
   let Spellings = ["memccpy"];
   let Prototype = "void*(void*, void const*, int, size_t)";
 }
 
-def MempCpy : GNULibBuiltin<"stdlib.h"> {
+def MempCpy : GNULibBuiltin<"string.h"> {
   let Spellings = ["mempcpy"];
   let Prototype = "void*(void*, void const*, size_t)";
 }
 
-def StpCpy : GNULibBuiltin<"stdlib.h"> {
+def StpCpy : GNULibBuiltin<"string.h"> {
   let Spellings = ["stpcpy"];
   let Attributes = [NoThrow];
   let Prototype = "char*(char*, char const*)";
   let AddBuiltinPrefixedAlias = 1;
 }
 
-def StpnCpy : GNULibBuiltin<"stdlib.h"> {
+def StpnCpy : GNULibBuiltin<"string.h"> {
   let Spellings = ["stpncpy"];
   let Attributes = [NoThrow];
   let Prototype = "char*(char*, char const*, size_t)";
   let AddBuiltinPrefixedAlias = 1;
 }
 
-def StrDup : GNULibBuiltin<"stdlib.h"> {
+def StrDup : GNULibBuiltin<"string.h"> {
   let Spellings = ["strdup"];
   let Attributes = [NoThrow];
   let Prototype = "char*(char const*)";
   let AddBuiltinPrefixedAlias = 1;
 }
 
-def StrnDup : GNULibBuiltin<"stdlib.h"> {
+def StrnDup : GNULibBuiltin<"string.h"> {
   let Spellings = ["strndup"];
   let Attributes = [NoThrow];
   let Prototype = "char*(char const*, size_t)";
@@ -3286,22 +3309,22 @@ def ObjcEnumerationMutation : ObjCLibBuiltin<"objc/runtime.h"> {
   let Prototype = "void(id)";
 }
 
-def ObjcReadWeak : ObjCLibBuiltin<"objc/message.h"> {
+def ObjcReadWeak : ObjCLibBuiltin<"objc/objc-auto.h"> {
   let Spellings = ["objc_read_weak"];
   let Prototype = "id(id*)";
 }
 
-def ObjcAssignWeak : ObjCLibBuiltin<"objc/message.h"> {
+def ObjcAssignWeak : ObjCLibBuiltin<"objc/objc-auto.h"> {
   let Spellings = ["objc_assign_weak"];
   let Prototype = "id(id, id*)";
 }
 
-def ObjcAssignIvar : ObjCLibBuiltin<"objc/message.h"> {
+def ObjcAssignIvar : ObjCLibBuiltin<"objc/objc-auto.h"> {
   let Spellings = ["objc_assign_ivar"];
   let Prototype = "id(id, id, ptrdiff_t)";
 }
 
-def ObjcAssignGlobal : ObjCLibBuiltin<"objc/message.h"> {
+def ObjcAssignGlobal : ObjCLibBuiltin<"objc/objc-auto.h"> {
   let Spellings = ["objc_assign_global"];
   let Prototype = "id(id, id*)";
 }
@@ -3371,13 +3394,6 @@ def Atan2 : FPMathTemplate, LibBuiltin<"math.h"> {
   let AddBuiltinPrefixedAlias = 1;
 }
 
-def Abs : IntMathTemplate, LibBuiltin<"math.h"> {
-  let Spellings = ["abs"];
-  let Attributes = [NoThrow, Const];
-  let Prototype = "T(T)";
-  let AddBuiltinPrefixedAlias = 1;
-}
-
 def Copysign : FPMathTemplate, LibBuiltin<"math.h"> {
   let Spellings = ["copysign"];
   let Attributes = [NoThrow, Const];
@@ -3996,8 +4012,16 @@ def BlockObjectDispose : LibBuiltin<"blocks.h"> {
 }
 // FIXME: Also declare NSConcreteGlobalBlock and NSConcreteStackBlock.
 
+def __Addressof : LangBuiltin<"CXX_LANG"> {
+  let Spellings = ["__addressof"];
+  let Attributes = [FunctionWithoutBuiltinPrefix, NoThrow, Const,
+                    IgnoreSignature, Constexpr];
+  let Prototype = "void*(void&)";
+  let Namespace = "std";
+}
+
 def Addressof : CxxLibBuiltin<"memory"> {
-  let Spellings = ["addressof", "__addressof"];
+  let Spellings = ["addressof"];
   let Attributes = [NoThrow, Const, IgnoreSignature, RequireDeclaration,
                     Constexpr];
   let Prototype = "void*(void&)";
@@ -4036,7 +4060,7 @@ def Move : CxxLibBuiltin<"utility"> {
   let Namespace = "std";
 }
 
-def MoveIfNsoexcept : CxxLibBuiltin<"memory"> {
+def MoveIfNsoexcept : CxxLibBuiltin<"utility"> {
   let Spellings = ["move_if_noexcept"];
   let Attributes = [NoThrow, Const, IgnoreSignature, RequireDeclaration,
                     Constexpr];
diff --git a/clang/include/clang/Basic/BuiltinsBase.td b/clang/include/clang/Basic/BuiltinsBase.td
index bfccff5600ddb..724747ec76d73 100644
--- a/clang/include/clang/Basic/BuiltinsBase.td
+++ b/clang/include/clang/Basic/BuiltinsBase.td
@@ -49,6 +49,8 @@ def UnevaluatedArguments : Attribute<"u">;
 // is required for a builtin.
 def FunctionWithBuiltinPrefix : Attribute<"F">;
 
+def FunctionWithoutBuiltinPrefix : Attribute<"f">;
+
 // const, but only when -fno-math-errno and FP exceptions are ignored.
 def ConstIgnoringErrnoAndExceptions : Attribute<"e">;