From 5be2b03b8839d3ea6e66175ce56e9482f55615fc Mon Sep 17 00:00:00 2001
From: Lorenzo Rossi <lorenzo.rossi@collabora.com>
Date: Fri, 27 Mar 2026 13:01:21 +0100
Subject: [PATCH] pan/compiler: Add bound assert on emit_split_i32

This could've saved me a lot of time debugging stack corruption.

Signed-off-by: Lorenzo Rossi <lorenzo.rossi@collabora.com>
Reviewed-by: Christoph Pillmayer <christoph.pillmayer@arm.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40677>
---
 src/panfrost/compiler/bifrost/bifrost_compile.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/panfrost/compiler/bifrost/bifrost_compile.c b/src/panfrost/compiler/bifrost/bifrost_compile.c
index 11e329b0b99..bfe8e970de4 100644
--- a/src/panfrost/compiler/bifrost/bifrost_compile.c
+++ b/src/panfrost/compiler/bifrost/bifrost_compile.c
@@ -200,6 +200,7 @@ bi_cache_collect(bi_builder *b, bi_index dst, bi_index *s, unsigned n)
 static void
 bi_emit_split_i32(bi_builder *b, bi_index dests[4], bi_index vec, unsigned n)
 {
+   assert(n <= 4);
    /* Setup the destinations */
    for (unsigned i = 0; i < n; ++i) {
       dests[i] = bi_temp(b->shader);