nir: add deref lowering sanity checking

This will be removed at the end of the transition, but add some tracking
plus asserts to help ensure that lowering passes are called at the
correct point (pre or post deref instruction lowering) as passes are
converted and the point where lower_deref_instrs() is called is moved.

Signed-off-by: Rob Clark <[email protected]>
Acked-by: Rob Clark <[email protected]>
Acked-by: Bas Nieuwenhuizen <[email protected]>
Acked-by: Dave Airlie <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/compiler/nir/nir_linking_helpers.c b/src/compiler/nir/nir_linking_helpers.c
index 2b0a2668a33..707bce12ef9 100644
--- a/src/compiler/nir/nir_linking_helpers.c
+++ b/src/compiler/nir/nir_linking_helpers.c
@@ -133,6 +133,8 @@ nir_remove_unused_varyings(nir_shader *producer, nir_shader *consumer)
 {
    assert(producer->info.stage != MESA_SHADER_FRAGMENT);
    assert(consumer->info.stage != MESA_SHADER_VERTEX);
+   nir_assert_lowered_derefs(producer, nir_lower_load_store_derefs);
+   nir_assert_lowered_derefs(consumer, nir_lower_load_store_derefs);
 
    uint64_t read[4] = { 0 }, written[4] = { 0 };
    uint64_t patches_read[4] = { 0 }, patches_written[4] = { 0 };