diff --git a/clang/lib/Basic/TargetInfo.cpp b/clang/lib/Basic/TargetInfo.cpp
--- a/clang/lib/Basic/TargetInfo.cpp
+++ b/clang/lib/Basic/TargetInfo.cpp
@@ -413,9 +413,8 @@
       const auto &OpenCLFeaturesMap = getSupportedOpenCLOpts();
       Opts.OpenCLGenericAddressSpace = hasFeatureEnabled(
           OpenCLFeaturesMap, "__opencl_c_generic_address_space");
-      if (Opts.OpenCLVersion == 300)
-        Opts.OpenCLPipes =
-            hasFeatureEnabled(OpenCLFeaturesMap, "__opencl_c_pipes");
+      Opts.OpenCLPipes =
+          hasFeatureEnabled(OpenCLFeaturesMap, "__opencl_c_pipes");
     }
   }
 
diff --git a/clang/test/CodeGenOpenCL/address-spaces-mangling.cl b/clang/test/CodeGenOpenCL/address-spaces-mangling.cl
--- a/clang/test/CodeGenOpenCL/address-spaces-mangling.cl
+++ b/clang/test/CodeGenOpenCL/address-spaces-mangling.cl
@@ -10,6 +10,8 @@
 // RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=CL1.2 -emit-llvm -o - | FileCheck -check-prefix=OCL-12 %s
 // RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=CL3.0 -cl-ext=+__opencl_c_generic_address_space -emit-llvm -o - | FileCheck -check-prefix=OCL-20 %s
 // RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=CL3.0 -cl-ext=-__opencl_c_generic_address_space,-__opencl_c_pipes -emit-llvm -o - | FileCheck -check-prefix=OCL-12 %s
+// RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=clc++2021 -cl-ext=+__opencl_c_generic_address_space -emit-llvm -o - | FileCheck -check-prefix=OCL-20 %s
+// RUN: %clang_cc1 %s -triple spir-unknown-unknown -cl-std=clc++2021 -cl-ext=-__opencl_c_generic_address_space,-__opencl_c_pipes -emit-llvm -o - | FileCheck -check-prefix=OCL-12 %s
 
 // We can't name this f as private is equivalent to default
 // no specifier given address space so we get multiple definition
diff --git a/clang/test/CodeGenOpenCL/address-spaces.cl b/clang/test/CodeGenOpenCL/address-spaces.cl
--- a/clang/test/CodeGenOpenCL/address-spaces.cl
+++ b/clang/test/CodeGenOpenCL/address-spaces.cl
@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 %s -O0 -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,SPIR
 // RUN: %clang_cc1 %s -O0 -cl-std=CL3.0 -cl-ext=-__opencl_c_generic_address_space,-__opencl_c_pipes -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,SPIR
+// RUN: %clang_cc1 %s -O0 -cl-std=clc++2021 -cl-ext=-__opencl_c_generic_address_space,-__opencl_c_pipes -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,SPIR
 // RUN: %clang_cc1 %s -O0 -DCL20 -cl-std=CL2.0 -ffake-address-space-map -emit-llvm -o - | FileCheck %s --check-prefixes=CL20,CL20SPIR
 // RUN: %clang_cc1 %s -O0 -triple amdgcn-amd-amdhsa -emit-llvm -o - | FileCheck --check-prefixes=CHECK,AMDGCN %s
 // RUN: %clang_cc1 %s -O0 -triple amdgcn-amd-amdhsa -cl-std=CL3.0 -emit-llvm -o - | FileCheck --check-prefixes=CHECK,AMDGCN %s
@@ -91,13 +92,13 @@
 
 typedef int int_td;
 typedef int *intp_td;
-// SPIR: define {{(dso_local )?}}void @test_typedef(i32 addrspace(1)* %x, i32 addrspace(2)* %y, i32* %z)
+// SPIR: define {{(dso_local )?}}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 {{(dso_local )?}}void @test_struct()
+// SPIR: define {{(dso_local )?}}void @{{.*}}test_struct{{.*}}()
 void test_struct() {
   // SPIR: %ps = alloca %struct.S*
   // CL20SPIR: %ps = alloca %struct.S addrspace(4)*
@@ -111,11 +112,11 @@
 #endif
 }
 
-// SPIR-LABEL: define {{(dso_local )?}}void @test_void_par()
+// SPIR-LABEL: define {{(dso_local )?}}void @{{.*}}test_void_par{{.*}}()
 void test_void_par(void) {}
 
 // On ppc64 returns signext i32.
-// SPIR-LABEL: define{{.*}} i32 @test_func_return_type()
+// SPIR-LABEL: define{{.*}} i32 @{{.*}}test_func_return_type{{.*}}()
 int test_func_return_type(void) {
   return 0;
 }
diff --git a/clang/test/CodeGenOpenCL/pipe_types.cl b/clang/test/CodeGenOpenCL/pipe_types.cl
--- a/clang/test/CodeGenOpenCL/pipe_types.cl
+++ b/clang/test/CodeGenOpenCL/pipe_types.cl
@@ -1,6 +1,8 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=CL2.0 -DTEST_STRUCT -o - %s | FileCheck --check-prefixes=CHECK,CHECK-STRUCT %s
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,+__opencl_c_program_scope_global_variables -o - %s | FileCheck --check-prefixes=CHECK %s
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,-__opencl_c_program_scope_global_variables -o - %s | FileCheck --check-prefixes=CHECK %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=clc++2021 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,+__opencl_c_program_scope_global_variables -o - %s | FileCheck --check-prefixes=CHECK %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=clc++2021 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,-__opencl_c_program_scope_global_variables -o - %s | FileCheck --check-prefixes=CHECK %s
 
 // CHECK: %opencl.pipe_ro_t = type opaque
 // CHECK: %opencl.pipe_wo_t = type opaque
@@ -8,25 +10,25 @@
 typedef int __attribute__((ext_vector_type(4))) int4;
 
 void test1(read_only pipe int p) {
-// CHECK: define{{.*}} void @test1(%opencl.pipe_ro_t* %p)
+// CHECK: define{{.*}} void @{{.*}}test1{{.*}}(%opencl.pipe_ro_t* %p)
   reserve_id_t rid;
 // CHECK: %rid = alloca %opencl.reserve_id_t
 }
 
 void test2(write_only pipe float p) {
-// CHECK: define{{.*}} void @test2(%opencl.pipe_wo_t* %p)
+// CHECK: define{{.*}} void @{{.*}}test2{{.*}}(%opencl.pipe_wo_t* %p)
 }
 
 void test3(read_only pipe const int p) {
-// CHECK: define{{.*}} void @test3(%opencl.pipe_ro_t* %p)
+// CHECK: define{{.*}} void @{{.*}}test3{{.*}}(%opencl.pipe_ro_t* %p)
 }
 
 void test4(read_only pipe uchar3 p) {
-// CHECK: define{{.*}} void @test4(%opencl.pipe_ro_t* %p)
+// CHECK: define{{.*}} void @{{.*}}test4{{.*}}(%opencl.pipe_ro_t* %p)
 }
 
 void test5(read_only pipe int4 p) {
-// CHECK: define{{.*}} void @test5(%opencl.pipe_ro_t* %p)
+// CHECK: define{{.*}} void @{{.*}}test5{{.*}}(%opencl.pipe_ro_t* %p)
 }
 
 typedef read_only pipe int MyPipe;
diff --git a/clang/test/CodeGenOpenCL/pipe_types_mangling.cl b/clang/test/CodeGenOpenCL/pipe_types_mangling.cl
--- a/clang/test/CodeGenOpenCL/pipe_types_mangling.cl
+++ b/clang/test/CodeGenOpenCL/pipe_types_mangling.cl
@@ -1,7 +1,9 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=clc++ -o - %s | FileCheck %s --check-prefixes=LINUX
-// RUN: %clang_cc1 -triple x86_64-unknown-windows-pc -emit-llvm -O0 -cl-std=clc++ -o - %s -DWIN| FileCheck %s --check-prefixes=WINDOWS
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=clc++1.0 -o - %s | FileCheck %s --check-prefixes=LINUX
+// RUN: %clang_cc1 -triple x86_64-unknown-windows-pc -emit-llvm -O0 -cl-std=clc++1.0 -o - %s -DWIN| FileCheck %s --check-prefixes=WINDOWS
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=CL2.0 -o - %s | FileCheck %s --check-prefixes=LINUX
 // RUN: %clang_cc1 -triple x86_64-unknown-windows-pc -emit-llvm -O0 -cl-std=CL2.0 -o - %s -DWIN| FileCheck %s --check-prefixes=OCLWINDOWS
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=clc++2021 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space -o - %s | FileCheck %s --check-prefixes=LINUX
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=clc++2021 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,+__opencl_c_program_scope_global_variables -o - %s | FileCheck %s --check-prefixes=LINUX
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space -o - %s | FileCheck %s --check-prefixes=LINUX
 // RUN: %clang_cc1 -triple x86_64-unknown-windows-pc -emit-llvm -O0 -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space -o - %s -DWIN | FileCheck %s --check-prefixes=OCLWINDOWS
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -O0 -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,+__opencl_c_program_scope_global_variables -o - %s | FileCheck %s --check-prefixes=LINUX
diff --git a/clang/test/Misc/opencl-c-3.0.incorrect_options.cl b/clang/test/Misc/opencl-c-3.0.incorrect_options.cl
--- a/clang/test/Misc/opencl-c-3.0.incorrect_options.cl
+++ b/clang/test/Misc/opencl-c-3.0.incorrect_options.cl
@@ -4,6 +4,7 @@
 // RUN: not %clang_cc1 -cl-std=clc++2021 -triple spir-unknown-unknown -cl-ext=+__opencl_c_fp64,-cl_khr_fp64 %s 2>&1 | FileCheck -check-prefix=CHECK-FP64 %s
 // RUN: not %clang_cc1 -cl-std=CL3.0 -triple spir-unknown-unknown -cl-ext=+__opencl_c_read_write_images,-__opencl_c_images %s 2>&1 | FileCheck -check-prefix=CHECK-READ-WRITE-IMAGES %s
 // RUN: not %clang_cc1 -cl-std=CL3.0 -triple spir-unknown-unknown -cl-ext=+__opencl_c_pipes,-__opencl_c_generic_address_space %s 2>&1 | FileCheck -check-prefix=CHECK-PIPES %s
+// RUN: not %clang_cc1 -cl-std=clc++2021 -triple spir-unknown-unknown -cl-ext=+__opencl_c_pipes,-__opencl_c_generic_address_space %s 2>&1 | FileCheck -check-prefix=CHECK-PIPES %s
 // RUN: not %clang_cc1 -cl-std=CL3.0 -triple spir-unknown-unknown -cl-ext=+__opencl_c_3d_image_writes,+__opencl_c_images,-cl_khr_3d_image_writes %s 2>&1 | FileCheck -check-prefix=CHECK-3D-WRITE-IMAGES-DIFF %s
 // RUN: not %clang_cc1 -cl-std=CL3.0 -triple spir-unknown-unknown -cl-ext=+__opencl_c_3d_image_writes,-__opencl_c_images %s 2>&1 | FileCheck -check-prefix=CHECK-3D-WRITE-IMAGES-DEPS %s
 
diff --git a/clang/test/SemaOpenCL/invalid-pipes-cl1.2.cl b/clang/test/SemaOpenCL/invalid-pipes-cl1.2.cl
--- a/clang/test/SemaOpenCL/invalid-pipes-cl1.2.cl
+++ b/clang/test/SemaOpenCL/invalid-pipes-cl1.2.cl
@@ -1,14 +1,18 @@
 // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL1.2
 // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL3.0 -cl-ext=-__opencl_c_pipes,-__opencl_c_generic_address_space
+// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=clc++2021 -cl-ext=-__opencl_c_pipes,-__opencl_c_generic_address_space
 
 void foo(read_only pipe int p);
 #if __OPENCL_C_VERSION__ > 120
 // expected-error@-2 {{OpenCL C version 3.0 does not support the 'pipe' type qualifier}}
 // expected-error@-3 {{access qualifier can only be used for pipe and image type}}
-#else
-// expected-warning@-5 {{type specifier missing, defaults to 'int'}}
+#elif defined(__OPENCL_CPP_VERSION__)
+// expected-error@-5 {{C++ for OpenCL version 2021 does not support the 'pipe' type qualifier}}
 // expected-error@-6 {{access qualifier can only be used for pipe and image type}}
-// expected-error@-7 {{expected ')'}} expected-note@-7 {{to match this '('}}
+#else
+// expected-warning@-8 {{type specifier missing, defaults to 'int'}}
+// expected-error@-9 {{access qualifier can only be used for pipe and image type}}
+// expected-error@-10 {{expected ')'}} expected-note@-10 {{to match this '('}}
 #endif
 
 // 'pipe' should be accepted as an identifier.
@@ -16,8 +20,16 @@
 #if __OPENCL_C_VERSION__ > 120
 // expected-error@-2 {{OpenCL C version 3.0 does not support the 'pipe' type qualifier}}
 // expected-warning@-3 {{typedef requires a name}}
+#elif defined(__OPENCL_CPP_VERSION__)
+// expected-error@-5 {{C++ for OpenCL version 2021 does not support the 'pipe' type qualifier}}
+// expected-warning@-6 {{typedef requires a name}}
 #endif
 
 void bar() {
- reserve_id_t r; // expected-error {{use of undeclared identifier 'reserve_id_t'}}
+ reserve_id_t r;
+#if defined(__OPENCL_C_VERSION__)
+// expected-error@-2 {{use of undeclared identifier 'reserve_id_t'}}
+#else
+// expected-error@-4 {{unknown type name 'reserve_id_t'}}
+#endif
 }
diff --git a/clang/test/SemaOpenCL/invalid-pipes-cl2.0.cl b/clang/test/SemaOpenCL/invalid-pipes-cl2.0.cl
--- a/clang/test/SemaOpenCL/invalid-pipes-cl2.0.cl
+++ b/clang/test/SemaOpenCL/invalid-pipes-cl2.0.cl
@@ -1,13 +1,15 @@
 // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL2.0
 // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,+__opencl_c_program_scope_global_variables
 // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL3.0 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,-__opencl_c_program_scope_global_variables
-// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=clc++
+// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=clc++1.0
+// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=clc++2021 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,+__opencl_c_program_scope_global_variables
+// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=clc++2021 -cl-ext=+__opencl_c_pipes,+__opencl_c_generic_address_space,-__opencl_c_program_scope_global_variables
 
 global pipe int gp;            // expected-error {{type '__global read_only pipe int' can only be used as a function parameter in OpenCL}}
 global reserve_id_t rid;          // expected-error {{the '__global reserve_id_t' type cannot be used to declare a program scope variable}}
 
 extern pipe write_only int get_pipe(); // expected-error {{'write_only' attribute only applies to parameters and typedefs}}
-#if defined(__OPENCL_CPP_VERSION__) || (__OPENCL_C_VERSION__ == 200) || (__OPENCL_C_VERSION__ == 300 && defined(__opencl_c_program_scope_global_variables))
+#if (__OPENCL_CPP_VERSION__ == 100) || (__OPENCL_C_VERSION__ == 200) || ((__OPENCL_CPP_VERSION__ == 202100 || __OPENCL_C_VERSION__ == 300) && defined(__opencl_c_program_scope_global_variables))
 // expected-error-re@-2{{type '__global write_only pipe int ({{(void)?}})' can only be used as a function parameter in OpenCL}}
 #else
 // FIXME: '__private' here makes no sense since program scope variables feature is not supported, should diagnose as '__global' probably