From 373bd37b85e5f467eed02d3bc345b84a509b2081 Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa@collabora.com>
Date: Thu, 6 Apr 2023 15:50:29 -0400
Subject: [PATCH] dxil: Avoid list_length

Do O(1) check instead.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22343>
---
 src/microsoft/compiler/dxil_nir_tess.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/microsoft/compiler/dxil_nir_tess.c b/src/microsoft/compiler/dxil_nir_tess.c
index addfccc..c70d21f 100644
--- a/src/microsoft/compiler/dxil_nir_tess.c
+++ b/src/microsoft/compiler/dxil_nir_tess.c
@@ -230,7 +230,8 @@ dxil_nir_split_tess_ctrl(nir_shader *nir, nir_function **patch_const_func)
             continue;
          nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
          if (intr->intrinsic != nir_intrinsic_load_invocation_id ||
-             list_length(&intr->dest.ssa.uses) <= 1)
+             list_is_empty(&intr->dest.ssa.uses) ||
+             list_is_singular(&intr->dest.ssa.uses))
             continue;
          nir_foreach_use_including_if_safe(src, &intr->dest.ssa) {
             b.cursor = nir_before_src(src);
-- 
2.7.4