nir: Add goto_if jump instruction

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2401>

src/broadcom/compiler/nir_to_vir.c

@@ -2587,6 +2587,12 @@ ntq_emit_jump(struct v3d_compile *c, nir_jump_instr *jump)
 
         case nir_jump_return:
                 unreachable("All returns shouold be lowered\n");
+                break;
+
+        case nir_jump_goto:
+        case nir_jump_goto_if:
+                unreachable("not supported\n");
+                break;
         }
 }