--- src/gallium/drivers/radeonsi/si_shader.c	2018-01-12 19:35:40.000000000 +0300
+++ src/gallium/drivers/radeonsi/si_shader.c	2018-01-12 21:11:33.071899392 +0300
@@ -1960,10 +1960,10 @@
 	struct si_shader_context *ctx = si_shader_context_from_abi(abi);
 	if (ctx->type == PIPE_SHADER_TESS_CTRL)
 		return unpack_param(ctx, ctx->param_tcs_out_lds_layout, 26, 6);
-	else if (ctx->type == PIPE_SHADER_TESS_EVAL)
-		return get_num_tcs_out_vertices(ctx);
-	else
+	else if (ctx->type != PIPE_SHADER_TESS_EVAL)
 		assert(!"invalid shader stage for TGSI_SEMANTIC_VERTICESIN");
+
+	return get_num_tcs_out_vertices(ctx);
 }
 
 void si_load_system_value(struct si_shader_context *ctx,