Index: include/clang/Basic/BuiltinsAMDGPU.def
===================================================================
--- include/clang/Basic/BuiltinsAMDGPU.def
+++ include/clang/Basic/BuiltinsAMDGPU.def
@@ -36,6 +36,7 @@
 // Instruction builtins.
 //===----------------------------------------------------------------------===//
 BUILTIN(__builtin_amdgcn_s_barrier, "v", "n")
+BUILTIN(__builtin_amdgcn_s_wave_barrier, "v", "n")
 BUILTIN(__builtin_amdgcn_div_scale, "dddbb*", "n")
 BUILTIN(__builtin_amdgcn_div_scalef, "fffbb*", "n")
 BUILTIN(__builtin_amdgcn_div_fmas, "ddddb", "nc")
Index: test/CodeGenOpenCL/builtins-amdgcn.cl
===================================================================
--- test/CodeGenOpenCL/builtins-amdgcn.cl
+++ test/CodeGenOpenCL/builtins-amdgcn.cl
@@ -270,6 +270,13 @@
   __builtin_amdgcn_s_barrier();
 }
 
+// CHECK-LABEL: @test_s_wave_barrier
+// CHECK: call void @llvm.amdgcn.s.wave.barrier(
+void test_s_wave_barrier()
+{
+  __builtin_amdgcn_s_wave_barrier();
+}
+
 // CHECK-LABEL: @test_s_memtime
 // CHECK: call i64 @llvm.amdgcn.s.memtime()
 void test_s_memtime(global ulong* out)