glasm: Move implemented instructions from not_implemented.cpp

src/shader_recompiler/backend/glasm/emit_glasm_control_flow.cpp

@@ -0,0 +1,18 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
+#include "shader_recompiler/backend/glasm/glasm_emit_context.h"
+
+namespace Shader::Backend::GLASM {
+
+void EmitJoin(EmitContext&) {
+    throw NotImplementedException("Join shouldn't be emitted");
+}
+
+void EmitDemoteToHelperInvocation(EmitContext& ctx) {
+    ctx.Add("KIL TR.x;");
+}
+
+} // namespace Shader::Backend::GLASM