From da9c8a462707c85de19720901fe1e299c95f191c Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Date: Mon, 6 Mar 2023 22:59:23 -0500
Subject: [PATCH] agx: Assert that we don't overflow registers

This will become particularly important when we bound to smaller register files.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22353>
---
 src/asahi/compiler/agx_register_allocate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/asahi/compiler/agx_register_allocate.c b/src/asahi/compiler/agx_register_allocate.c
index d46ce903a30..27da7da92c9 100644
--- a/src/asahi/compiler/agx_register_allocate.c
+++ b/src/asahi/compiler/agx_register_allocate.c
@@ -215,6 +215,7 @@ reserve_live_in(struct ra_ctx *rctx)
 static void
 assign_regs(struct ra_ctx *rctx, agx_index v, unsigned reg)
 {
+   assert(reg < rctx->bound && "must not overflow register file");
    assert(v.type == AGX_INDEX_NORMAL && "only SSA gets registers allocated");
    rctx->ssa_to_reg[v.value] = reg;