From 0a04200ba7a88446e9f100cb95377884ee7c0d1c Mon Sep 17 00:00:00 2001
From: Rhys Perry <pendingchaos02@gmail.com>
Date: Fri, 31 Jan 2025 16:21:10 +0000
Subject: [PATCH] nir/linking_helpers: invalidate metadata in
 nir_link_opt_varyings

nir_instr_insert and nir_def_init invalidate nir_metadata_instr_index and
nir_metadata_live_defs, but not nir_metadata_loop_analysis

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33354>
---
 src/compiler/nir/nir_linking_helpers.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/compiler/nir/nir_linking_helpers.c b/src/compiler/nir/nir_linking_helpers.c
index 8874540b73b..9ed249e94d9 100644
--- a/src/compiler/nir/nir_linking_helpers.c
+++ b/src/compiler/nir/nir_linking_helpers.c
@@ -1074,6 +1074,9 @@ replace_varying_input_by_constant_load(nir_shader *shader,
       }
    }
 
+   if (progress)
+      nir_metadata_preserve(impl, nir_metadata_control_flow);
+
    return progress;
 }
 
@@ -1120,6 +1123,9 @@ replace_duplicate_input(nir_shader *shader, nir_variable *input_var,
       }
    }
 
+   if (progress)
+      nir_metadata_preserve(impl, nir_metadata_control_flow);
+
    return progress;
 }
 
@@ -1285,6 +1291,9 @@ replace_varying_input_by_uniform_load(nir_shader *shader,
       }
    }
 
+   if (progress)
+      nir_metadata_preserve(impl, nir_metadata_control_flow);
+
    return progress;
 }