nir: Consider deref instructions in lower_phis_to_scalar

Reviewed-by: Caio Marcelo de Oliveira Filho <[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, 9 insertions, 2 deletions

diff --git a/src/compiler/nir/nir_lower_phis_to_scalar.c b/src/compiler/nir/nir_lower_phis_to_scalar.c
index d055e781074..6cb9420d0f2 100644
--- a/src/compiler/nir/nir_lower_phis_to_scalar.c
+++ b/src/compiler/nir/nir_lower_phis_to_scalar.c
@@ -83,10 +83,19 @@ is_phi_src_scalarizable(nir_phi_src *src,
       nir_intrinsic_instr *src_intrin = nir_instr_as_intrinsic(src_instr);
 
       switch (src_intrin->intrinsic) {
+      case nir_intrinsic_load_deref: {
+         nir_deref_instr *deref = nir_src_as_deref(src_intrin->src[0]);
+         return deref->mode == nir_var_shader_in ||
+                deref->mode == nir_var_uniform;
+      }
+
       case nir_intrinsic_load_var:
          return src_intrin->variables[0]->var->data.mode == nir_var_shader_in ||
                 src_intrin->variables[0]->var->data.mode == nir_var_uniform;
 
+      case nir_intrinsic_interp_deref_at_centroid:
+      case nir_intrinsic_interp_deref_at_sample:
+      case nir_intrinsic_interp_deref_at_offset:
       case nir_intrinsic_interp_var_at_centroid:
       case nir_intrinsic_interp_var_at_sample:
       case nir_intrinsic_interp_var_at_offset:
@@ -299,8 +308,6 @@ nir_lower_phis_to_scalar(nir_shader *shader)
 {
    bool progress = false;
 
-   nir_assert_lowered_derefs(shader, nir_lower_load_store_derefs);
-
    nir_foreach_function(function, shader) {
       if (function->impl)
          progress = lower_phis_to_scalar_impl(function->impl) || progress;