diff --git a/libclc/libspirv/include/libspirv/lp64_types.h b/libclc/libspirv/include/libspirv/lp64_types.h
index aa8e9ad85be63..e9b7095fb8b5e 100644
--- a/libclc/libspirv/include/libspirv/lp64_types.h
+++ b/libclc/libspirv/include/libspirv/lp64_types.h
@@ -22,6 +22,13 @@ typedef char __clc_vec4_char_t __attribute__((ext_vector_type(4)));
 typedef char __clc_vec8_char_t __attribute__((ext_vector_type(8)));
 typedef char __clc_vec16_char_t __attribute__((ext_vector_type(16)));
 
+typedef signed char __clc_schar_t;
+typedef signed char __clc_vec2_schar_t __attribute__((ext_vector_type(2)));
+typedef signed char __clc_vec3_schar_t __attribute__((ext_vector_type(3)));
+typedef signed char __clc_vec4_schar_t __attribute__((ext_vector_type(4)));
+typedef signed char __clc_vec8_schar_t __attribute__((ext_vector_type(8)));
+typedef signed char __clc_vec16_schar_t __attribute__((ext_vector_type(16)));
+
 typedef char __clc_int8_t;
 typedef char __clc_vec2_int8_t __attribute__((ext_vector_type(2)));
 typedef char __clc_vec3_int8_t __attribute__((ext_vector_type(3)));
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar.cl b/libclc/test/binding/core/ConvertFToS_Rschar.cl
new file mode 100644
index 0000000000000..436909aa4564e
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2.cl b/libclc/test/binding/core/ConvertFToS_Rschar2.cl
new file mode 100644
index 0000000000000..3f1d68eefaa5c
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_rte.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_rte.cl
new file mode 100644
index 0000000000000..12745f98f863f
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_rte.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rte(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rte(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rte(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rte(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rte(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rte(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_rtn.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_rtn.cl
new file mode 100644
index 0000000000000..980f1d89b53cf
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_rtn.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtn(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtn(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtn(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtn(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtn(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtn(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_rtp.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_rtp.cl
new file mode 100644
index 0000000000000..9f41f5886947a
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_rtp.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtp(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtp(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtp(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtp(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtp(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtp(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_rtz.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_rtz.cl
new file mode 100644
index 0000000000000..a4e8d9bece33c
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_rtz.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtz(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtz(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtz(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtz(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_rtz(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_rtz(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_sat.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_sat.cl
new file mode 100644
index 0000000000000..b0a6598dfa51b
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_sat.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rte.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rte.cl
new file mode 100644
index 0000000000000..eb4affaedea87
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rte.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rte(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rte(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rte(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rte(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rte(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rte(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtn.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtn.cl
new file mode 100644
index 0000000000000..c9215f6210790
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtn.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtn(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtn(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtn(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtn(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtn(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtn(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtp.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtp.cl
new file mode 100644
index 0000000000000..fb22e0df12b5d
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtp.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtp(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtp(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtp(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtp(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtp(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtp(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtz.cl b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtz.cl
new file mode 100644
index 0000000000000..8107cda9f00ca
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar2_sat_rtz.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtz(__clc_vec2_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtz(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtz(__clc_vec2_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtz(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_ConvertFToS_Rschar2_sat_rtz(__clc_vec2_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar2_sat_rtz(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_rte.cl b/libclc/test/binding/core/ConvertFToS_Rschar_rte.cl
new file mode 100644
index 0000000000000..796a8b1b14b91
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_rte.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rte(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rte(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rte(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rte(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rte(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rte(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_rtn.cl b/libclc/test/binding/core/ConvertFToS_Rschar_rtn.cl
new file mode 100644
index 0000000000000..9ba22e2a4478a
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_rtn.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtn(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtn(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtn(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtn(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtn(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtn(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_rtp.cl b/libclc/test/binding/core/ConvertFToS_Rschar_rtp.cl
new file mode 100644
index 0000000000000..3311c6cff59c8
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_rtp.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtp(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtp(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtp(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtp(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtp(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtp(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_rtz.cl b/libclc/test/binding/core/ConvertFToS_Rschar_rtz.cl
new file mode 100644
index 0000000000000..53825f0fda0c7
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_rtz.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtz(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtz(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtz(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtz(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_rtz(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_rtz(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_sat.cl b/libclc/test/binding/core/ConvertFToS_Rschar_sat.cl
new file mode 100644
index 0000000000000..b6cf3ae31adc0
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_sat.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_sat_rte.cl b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rte.cl
new file mode 100644
index 0000000000000..38b15c449d020
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rte.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rte(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rte(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rte(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rte(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rte(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rte(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtn.cl b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtn.cl
new file mode 100644
index 0000000000000..75f275b558e31
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtn.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtn(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtn(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtn(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtn(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtn(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtn(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtp.cl b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtp.cl
new file mode 100644
index 0000000000000..275d7bb4d4acb
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtp.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtp(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtp(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtp(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtp(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtp(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtp(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtz.cl b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtz.cl
new file mode 100644
index 0000000000000..44525d6b062ef
--- /dev/null
+++ b/libclc/test/binding/core/ConvertFToS_Rschar_sat_rtz.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtz(__clc_fp32_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtz(args_0);
+}
+
+#ifdef cl_khr_fp64
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtz(__clc_fp64_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtz(args_0);
+}
+
+#endif
+#ifdef cl_khr_fp16
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_ConvertFToS_Rschar_sat_rtz(__clc_fp16_t args_0) {
+  return __spirv_ConvertFToS_Rschar_sat_rtz(args_0);
+}
+
+#endif
diff --git a/libclc/test/binding/core/SConvert_Rschar.cl b/libclc/test/binding/core/SConvert_Rschar.cl
new file mode 100644
index 0000000000000..b136b0607a91d
--- /dev/null
+++ b/libclc/test/binding/core/SConvert_Rschar.cl
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SConvert_Rschar(__clc_int16_t args_0) {
+  return __spirv_SConvert_Rschar(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SConvert_Rschar(__clc_int32_t args_0) {
+  return __spirv_SConvert_Rschar(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SConvert_Rschar(__clc_int64_t args_0) {
+  return __spirv_SConvert_Rschar(args_0);
+}
diff --git a/libclc/test/binding/core/SConvert_Rschar2.cl b/libclc/test/binding/core/SConvert_Rschar2.cl
new file mode 100644
index 0000000000000..40688655e9058
--- /dev/null
+++ b/libclc/test/binding/core/SConvert_Rschar2.cl
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SConvert_Rschar2(__clc_vec2_int16_t args_0) {
+  return __spirv_SConvert_Rschar2(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SConvert_Rschar2(__clc_vec2_int32_t args_0) {
+  return __spirv_SConvert_Rschar2(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SConvert_Rschar2(__clc_vec2_int64_t args_0) {
+  return __spirv_SConvert_Rschar2(args_0);
+}
diff --git a/libclc/test/binding/core/SConvert_Rschar2_sat.cl b/libclc/test/binding/core/SConvert_Rschar2_sat.cl
new file mode 100644
index 0000000000000..ad6c4ff842aaf
--- /dev/null
+++ b/libclc/test/binding/core/SConvert_Rschar2_sat.cl
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SConvert_Rschar2_sat(__clc_vec2_int16_t args_0) {
+  return __spirv_SConvert_Rschar2_sat(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SConvert_Rschar2_sat(__clc_vec2_int32_t args_0) {
+  return __spirv_SConvert_Rschar2_sat(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SConvert_Rschar2_sat(__clc_vec2_int64_t args_0) {
+  return __spirv_SConvert_Rschar2_sat(args_0);
+}
diff --git a/libclc/test/binding/core/SConvert_Rschar_sat.cl b/libclc/test/binding/core/SConvert_Rschar_sat.cl
new file mode 100644
index 0000000000000..2e1a7a9e5704c
--- /dev/null
+++ b/libclc/test/binding/core/SConvert_Rschar_sat.cl
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SConvert_Rschar_sat(__clc_int16_t args_0) {
+  return __spirv_SConvert_Rschar_sat(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SConvert_Rschar_sat(__clc_int32_t args_0) {
+  return __spirv_SConvert_Rschar_sat(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SConvert_Rschar_sat(__clc_int64_t args_0) {
+  return __spirv_SConvert_Rschar_sat(args_0);
+}
diff --git a/libclc/test/binding/core/SatConvertUToS_Rschar.cl b/libclc/test/binding/core/SatConvertUToS_Rschar.cl
new file mode 100644
index 0000000000000..f81dda196c0eb
--- /dev/null
+++ b/libclc/test/binding/core/SatConvertUToS_Rschar.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SatConvertUToS_Rschar(__clc_uint8_t args_0) {
+  return __spirv_SatConvertUToS_Rschar(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SatConvertUToS_Rschar(__clc_uint16_t args_0) {
+  return __spirv_SatConvertUToS_Rschar(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SatConvertUToS_Rschar(__clc_uint32_t args_0) {
+  return __spirv_SatConvertUToS_Rschar(args_0);
+}
+
+__attribute__((overloadable)) __clc_schar_t
+test___spirv_SatConvertUToS_Rschar(__clc_uint64_t args_0) {
+  return __spirv_SatConvertUToS_Rschar(args_0);
+}
diff --git a/libclc/test/binding/core/SatConvertUToS_Rschar2.cl b/libclc/test/binding/core/SatConvertUToS_Rschar2.cl
new file mode 100644
index 0000000000000..035a99080ace2
--- /dev/null
+++ b/libclc/test/binding/core/SatConvertUToS_Rschar2.cl
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %clang -emit-llvm -S -o - %s | FileCheck %s
+
+#include <libspirv/spirv_types.h>
+
+// CHECK-NOT: declare {{.*}} @_Z
+// CHECK-NOT: call {{[^ ]*}} bitcast
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SatConvertUToS_Rschar2(__clc_vec2_uint8_t args_0) {
+  return __spirv_SatConvertUToS_Rschar2(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SatConvertUToS_Rschar2(__clc_vec2_uint16_t args_0) {
+  return __spirv_SatConvertUToS_Rschar2(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SatConvertUToS_Rschar2(__clc_vec2_uint32_t args_0) {
+  return __spirv_SatConvertUToS_Rschar2(args_0);
+}
+
+__attribute__((overloadable)) __clc_vec2_schar_t
+test___spirv_SatConvertUToS_Rschar2(__clc_vec2_uint64_t args_0) {
+  return __spirv_SatConvertUToS_Rschar2(args_0);
+}