From a8481295d8bbbd92c86ec0611f2730130bc642cd Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Wed, 11 Feb 2026 15:30:38 -0800
Subject: [PATCH] brw: Only lower system values for passthrough TCS

This cuts 75 passes that do nothing useful.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39926>
---
 src/intel/compiler/brw/brw_nir.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/intel/compiler/brw/brw_nir.c b/src/intel/compiler/brw/brw_nir.c
index cd4455b1e79..6d15d05b92c 100644
--- a/src/intel/compiler/brw/brw_nir.c
+++ b/src/intel/compiler/brw/brw_nir.c
@@ -3276,8 +3276,7 @@ brw_nir_create_passthrough_tcs(void *mem_ctx, const struct brw_compiler *compile
    nir->info.tess._primitive_mode = key->_tes_primitive_mode;
    nir_validate_shader(nir, "in brw_nir_create_passthrough_tcs");
 
-   struct brw_nir_compiler_opts opts = {};
-   brw_preprocess_nir(compiler, nir, &opts);
+   NIR_PASS(_, nir, nir_lower_system_values);
 
    return nir;
 }