From e147c095b4daaf678a4bc611a3660c949944fedf Mon Sep 17 00:00:00 2001
From: Karol Herbst <kherbst@redhat.com>
Date: Sun, 12 Apr 2026 19:45:43 +0200
Subject: [PATCH] nak: sink load_global

This seem to hurt smaller shaders, but really helps a lot with some of the
worst cases we have reducing spilling by quite a lot.

Totals from 15249 (1.26% of 1212873) affected shaders:
CodeSize: 332565024 -> 333294192 (+0.22%); split: -0.38%, +0.60%
Number of GPRs: 1020912 -> 1017649 (-0.32%); split: -2.15%, +1.83%
SLM Size: 114724 -> 90240 (-21.34%); split: -21.37%, +0.03%
Static cycle count: 538619840 -> 537174408 (-0.27%); split: -0.88%, +0.61%
Spills to memory: 46686 -> 38685 (-17.14%)
Fills from memory: 46686 -> 38685 (-17.14%)
Spills to reg: 21224 -> 20703 (-2.45%); split: -3.23%, +0.77%
Fills from reg: 19768 -> 19327 (-2.23%); split: -2.87%, +0.64%
Max warps/SM: 519248 -> 519768 (+0.10%); split: +1.10%, -1.00%
---
 src/nouveau/compiler/nak_nir.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/nouveau/compiler/nak_nir.c b/src/nouveau/compiler/nak_nir.c
index 83d80bc20c4..7b8dbb17893 100644
--- a/src/nouveau/compiler/nak_nir.c
+++ b/src/nouveau/compiler/nak_nir.c
@@ -1375,6 +1375,7 @@ nak_postprocess_nir(nir_shader *nir,
    } while (progress);
 
    OPT(nir, nir_opt_move, nir_move_comparisons | nir_move_load_ubo);
+   OPT(nir, nir_opt_sink, nir_move_load_global);
 
    if (nak->sm < 70) {
       const nir_split_conversions_options split_conv_opts = {