nir: Add a pass for lower indirect variable dereferences

This new pass lowers load/store_var intrinsics that act on indirect derefs
to if-ladder of direct load/store_var intrinsics.  The if-ladders perform a
simple binary search on the indirect.

Reviewed-by: Connor Abbott <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index cccb3a41da5..cfbac81dbb1 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -2055,6 +2055,8 @@ void nir_lower_var_copies(nir_shader *shader);
 
 bool nir_lower_global_vars_to_local(nir_shader *shader);
 
+bool nir_lower_indirect_derefs(nir_shader *shader, uint32_t mode_mask);
+
 bool nir_lower_locals_to_regs(nir_shader *shader);
 
 void nir_lower_outputs_to_temporaries(nir_shader *shader);