Mesa (main): glsl: preserve all metadata when lower_buffer_interface_derefs doesn't make progress

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Module: Mesa
Branch: main
Commit: 87ecdd4eff07e563bf8eed8706c5ee96183ff3b5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=87ecdd4eff07e563bf8eed8706c5ee96183ff3b5

Author: Marcin Ślusarz <marcin.slusarz at intel.com>
Date:   Fri Aug  6 15:27:52 2021 +0200

glsl: preserve all metadata when lower_buffer_interface_derefs doesn't make progress

Signed-off-by: Marcin Ślusarz <marcin.slusarz at intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13189>

---

 src/compiler/glsl/gl_nir_lower_buffers.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/compiler/glsl/gl_nir_lower_buffers.c b/src/compiler/glsl/gl_nir_lower_buffers.c
index b0ce128c196..06460ad6a54 100644
--- a/src/compiler/glsl/gl_nir_lower_buffers.c
+++ b/src/compiler/glsl/gl_nir_lower_buffers.c
@@ -320,6 +320,8 @@ lower_buffer_interface_derefs_impl(nir_function_impl *impl,
    if (progress) {
       nir_metadata_preserve(impl, nir_metadata_block_index |
                                   nir_metadata_dominance);
+   } else {
+      nir_metadata_preserve(impl, nir_metadata_all);
    }
 
    return progress;