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agx: Assert that we don't overflow registers
author
Alyssa Rosenzweig
<alyssa@rosenzweig.io>
Tue, 7 Mar 2023 03:59:23 +0000
(22:59 -0500)
committer
Marge Bot
<emma+marge@anholt.net>
Fri, 7 Apr 2023 03:23:03 +0000
(
03:23
+0000)
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
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diff --git
a/src/asahi/compiler/agx_register_allocate.c
b/src/asahi/compiler/agx_register_allocate.c
index
d46ce90
..
27da7da
100644
(file)
--- 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;