From 087d439a52c65791c18c6757f8f26e6beaa3490a Mon Sep 17 00:00:00 2001
From: Simon Perretta <simon.perretta@imgtec.com>
Date: Sat, 23 Nov 2024 18:07:26 +0000
Subject: [PATCH] pco: run dce pass until no more progress is made

Signed-off-by: Simon Perretta <simon.perretta@imgtec.com>
Acked-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33998>
---
 src/imagination/pco/pco_ir.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/imagination/pco/pco_ir.c b/src/imagination/pco/pco_ir.c
index 3c42b79138e..2ee5bd9fb83 100644
--- a/src/imagination/pco/pco_ir.c
+++ b/src/imagination/pco/pco_ir.c
@@ -28,7 +28,13 @@ void pco_process_ir(pco_ctx *ctx, pco_shader *shader)
 
    PCO_PASS(_, shader, pco_const_imms);
    PCO_PASS(_, shader, pco_opt);
-   PCO_PASS(_, shader, pco_dce);
+
+   bool progress;
+   do {
+      progress = false;
+      PCO_PASS(progress, shader, pco_dce);
+   } while (progress);
+
    /* TODO: schedule after RA instead as e.g. vecs may no longer be the first
     * time a drc result is used.
     */