diff --git a/clang/include/clang/Basic/Builtins.h b/clang/include/clang/Basic/Builtins.h
--- a/clang/include/clang/Basic/Builtins.h
+++ b/clang/include/clang/Basic/Builtins.h
@@ -179,10 +179,6 @@
            strchr(getRecord(ID).Type, 'A') != nullptr;
   }
 
-  /// Completely forget that the given ID was ever considered a builtin,
-  /// e.g., because the user provided a conflicting signature.
-  void forgetBuiltin(unsigned ID, IdentifierTable &Table);
-
   /// If this is a library function that comes from a specific
   /// header, retrieve that header name.
   const char *getHeaderName(unsigned ID) const {
diff --git a/clang/include/clang/Basic/arm_sve.td b/clang/include/clang/Basic/arm_sve.td
--- a/clang/include/clang/Basic/arm_sve.td
+++ b/clang/include/clang/Basic/arm_sve.td
@@ -668,16 +668,16 @@
 // Prefetches
 
 // Prefetch (Scalar base)
-def SVPRFB : MInst<"svprfb", "vPcJ", "c", [IsPrefetch], MemEltTyInt8,  "aarch64_sve_prf">;
-def SVPRFH : MInst<"svprfh", "vPcJ", "s", [IsPrefetch], MemEltTyInt16, "aarch64_sve_prf">;
-def SVPRFW : MInst<"svprfw", "vPcJ", "i", [IsPrefetch], MemEltTyInt32, "aarch64_sve_prf">;
-def SVPRFD : MInst<"svprfd", "vPcJ", "l", [IsPrefetch], MemEltTyInt64, "aarch64_sve_prf">;
+def SVPRFB : MInst<"svprfb", "vPQJ", "c", [IsPrefetch], MemEltTyInt8,  "aarch64_sve_prf">;
+def SVPRFH : MInst<"svprfh", "vPQJ", "s", [IsPrefetch], MemEltTyInt16, "aarch64_sve_prf">;
+def SVPRFW : MInst<"svprfw", "vPQJ", "i", [IsPrefetch], MemEltTyInt32, "aarch64_sve_prf">;
+def SVPRFD : MInst<"svprfd", "vPQJ", "l", [IsPrefetch], MemEltTyInt64, "aarch64_sve_prf">;
 
 // Prefetch (Scalar base, VL displacement)
-def SVPRFB_VNUM : MInst<"svprfb_vnum", "vPclJ", "c", [IsPrefetch], MemEltTyInt8,  "aarch64_sve_prf">;
-def SVPRFH_VNUM : MInst<"svprfh_vnum", "vPclJ", "s", [IsPrefetch], MemEltTyInt16, "aarch64_sve_prf">;
-def SVPRFW_VNUM : MInst<"svprfw_vnum", "vPclJ", "i", [IsPrefetch], MemEltTyInt32, "aarch64_sve_prf">;
-def SVPRFD_VNUM : MInst<"svprfd_vnum", "vPclJ", "l", [IsPrefetch], MemEltTyInt64, "aarch64_sve_prf">;
+def SVPRFB_VNUM : MInst<"svprfb_vnum", "vPQlJ", "c", [IsPrefetch], MemEltTyInt8,  "aarch64_sve_prf">;
+def SVPRFH_VNUM : MInst<"svprfh_vnum", "vPQlJ", "s", [IsPrefetch], MemEltTyInt16, "aarch64_sve_prf">;
+def SVPRFW_VNUM : MInst<"svprfw_vnum", "vPQlJ", "i", [IsPrefetch], MemEltTyInt32, "aarch64_sve_prf">;
+def SVPRFD_VNUM : MInst<"svprfd_vnum", "vPQlJ", "l", [IsPrefetch], MemEltTyInt64, "aarch64_sve_prf">;
 
 // Prefetch (Vector bases)
 def SVPRFB_GATHER_BASES : MInst<"svprfb_gather[_{2}base]", "vPdJ", "UiUl", [IsGatherPrefetch], MemEltTyInt8,  "aarch64_sve_prfb_gather_scalar_offset">;
diff --git a/clang/lib/Basic/Builtins.cpp b/clang/lib/Basic/Builtins.cpp
--- a/clang/lib/Basic/Builtins.cpp
+++ b/clang/lib/Basic/Builtins.cpp
@@ -106,10 +106,6 @@
         .setBuiltinID(i + Builtin::FirstTSBuiltin + TSRecords.size());
 }
 
-void Builtin::Context::forgetBuiltin(unsigned ID, IdentifierTable &Table) {
-  Table.get(getRecord(ID).Name).setBuiltinID(0);
-}
-
 unsigned Builtin::Context::getRequiredVectorWidth(unsigned ID) const {
   const char *WidthPos = ::strchr(getRecord(ID).Attributes, 'V');
   if (!WidthPos)
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
@@ -10966,24 +10966,6 @@
     if (!CurContext->isRecord())
       CheckCXXDefaultArguments(NewFD);
 
-    // If this function declares a builtin function, check the type of this
-    // declaration against the expected type for the builtin.
-    if (unsigned BuiltinID = NewFD->getBuiltinID()) {
-      ASTContext::GetBuiltinTypeError Error;
-      LookupNecessaryTypesForBuiltin(S, BuiltinID);
-      QualType T = Context.GetBuiltinType(BuiltinID, Error);
-      // If the type of the builtin differs only in its exception
-      // specification, that's OK.
-      // FIXME: If the types do differ in this way, it would be better to
-      // retain the 'noexcept' form of the type.
-      if (!T.isNull() &&
-          !Context.hasSameFunctionTypeIgnoringExceptionSpec(T,
-                                                            NewFD->getType()))
-        // The type of this function differs from the type of the builtin,
-        // so forget about the builtin entirely.
-        Context.BuiltinInfo.forgetBuiltin(BuiltinID, Context.Idents);
-    }
-
     // If this function is declared as being extern "C", then check to see if
     // the function returns a UDT (class, struct, or union type) that is not C
     // compatible, and if it does, warn the user.
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfb.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfb.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfb.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfb.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfd.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfd.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfd.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfd.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfh.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfh.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfh.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfh.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfw.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfw.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfw.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_prfw.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecb.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecb.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecb.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecb.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecd.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecd.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecd.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecd.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdech.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdech.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdech.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdech.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecp.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecp.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecp.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecp.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecw.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecw.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecw.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qdecw.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincb.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincb.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincb.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincb.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincd.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincd.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincd.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincd.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qinch.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qinch.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qinch.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qinch.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincp.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincp.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincp.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincp.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>
 
diff --git a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincw.c b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincw.c
--- a/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincw.c
+++ b/clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_qincw.c
@@ -1,6 +1,8 @@
 // REQUIRES: aarch64-registered-target
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - -x c++ %s | FileCheck %s
 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -o - %s >/dev/null
 #include <arm_sve.h>