From 252e55a1bb0b9f7829230368e47a119122ae7ba5 Mon Sep 17 00:00:00 2001
From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Date: Tue, 16 Dec 2025 17:25:29 +0200
Subject: [PATCH] nir/printf-helpers: set writes_memory at printf emission

Those helpers can be called late (since it's mostly for debug
purposes). This can avoid surprises in the backend and also avoids
rerunning gather_info.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38995>
---
 src/compiler/nir/nir_lower_printf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/compiler/nir/nir_lower_printf.c b/src/compiler/nir/nir_lower_printf.c
index 098ecd47e75..3263c001691 100644
--- a/src/compiler/nir/nir_lower_printf.c
+++ b/src/compiler/nir/nir_lower_printf.c
@@ -293,6 +293,8 @@ nir_vprintf_fmt(nir_builder *b, unsigned ptr_bit_size, const char *fmt, va_list
     * cache while debugging compiler issues is a good practice anyway.
     */
    u_printf_singleton_add(&info, 1);
+
+   b->shader->info.writes_memory = true;
 }
 
 void