From d6dc0ea5ae81b36f359ff3a653928910be2266a5 Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Fri, 7 Nov 2025 23:55:03 -0500
Subject: [PATCH] panvk: Split var copies and lower local vars early

These two passes are a prerequisite for basically anything that
optimizes on variables.

Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Reviewed-by: Christoph Pillmayer <christoph.pillmayern@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38334>
---
 src/panfrost/vulkan/panvk_vX_shader.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/panfrost/vulkan/panvk_vX_shader.c b/src/panfrost/vulkan/panvk_vX_shader.c
index 386d799a9de..66b3ec74e76 100644
--- a/src/panfrost/vulkan/panvk_vX_shader.c
+++ b/src/panfrost/vulkan/panvk_vX_shader.c
@@ -407,6 +407,9 @@ panvk_preprocess_nir(struct vk_physical_device *vk_pdev,
    NIR_PASS(_, nir, lower_layer_writes);
 #endif
 
+   NIR_PASS(_, nir, nir_lower_global_vars_to_local);
+   NIR_PASS(_, nir, nir_split_var_copies);
+
    NIR_PASS(_, nir, nir_lower_indirect_derefs,
             nir_var_shader_in | nir_var_shader_out, UINT32_MAX);