From: Jason Ekstrand Date: Sat, 17 Mar 2018 04:20:44 +0000 (-0700) Subject: nir: Support deref instructions in split_var_copies X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9fe99129df9056e2c62ae8f5426bf06a081ccdc8;p=mesa.git nir: Support deref instructions in split_var_copies Reviewed-by: Caio Marcelo de Oliveira Filho Acked-by: Rob Clark Acked-by: Bas Nieuwenhuizen Acked-by: Dave Airlie Reviewed-by: Kenneth Graunke --- diff --git a/src/compiler/nir/nir_split_var_copies.c b/src/compiler/nir/nir_split_var_copies.c index c18d77d745d..bcd1f10cd26 100644 --- a/src/compiler/nir/nir_split_var_copies.c +++ b/src/compiler/nir/nir_split_var_copies.c @@ -26,6 +26,7 @@ */ #include "nir.h" +#include "nir_builder.h" /* * Implements "copy splitting" which is similar to structure splitting only @@ -259,6 +260,25 @@ split_var_copies_block(nir_block *block, struct split_var_copies_state *state) return true; } +static void +split_deref_copy_instr(nir_builder *b, + nir_deref_instr *dst, nir_deref_instr *src) +{ + assert(dst->type == src->type); + if (glsl_type_is_vector_or_scalar(src->type)) { + nir_copy_deref(b, dst, src); + } else if (glsl_type_is_struct(src->type)) { + for (unsigned i = 0; i < glsl_get_length(src->type); i++) { + split_deref_copy_instr(b, nir_build_deref_struct(b, dst, i), + nir_build_deref_struct(b, src, i)); + } + } else { + assert(glsl_type_is_matrix(src->type) || glsl_type_is_array(src->type)); + split_deref_copy_instr(b, nir_build_deref_array_wildcard(b, dst), + nir_build_deref_array_wildcard(b, src)); + } +} + static bool split_var_copies_impl(nir_function_impl *impl) { @@ -268,8 +288,30 @@ split_var_copies_impl(nir_function_impl *impl) state.dead_ctx = ralloc_context(NULL); state.progress = false; + nir_builder b; + nir_builder_init(&b, impl); + nir_foreach_block(block, impl) { split_var_copies_block(block, &state); + + nir_foreach_instr_safe(instr, block) { + if (instr->type != nir_instr_type_intrinsic) + continue; + + nir_intrinsic_instr *copy = nir_instr_as_intrinsic(instr); + if (copy->intrinsic != nir_intrinsic_copy_deref) + continue; + + b.cursor = nir_instr_remove(©->instr); + + nir_deref_instr *dst = + nir_instr_as_deref(copy->src[0].ssa->parent_instr); + nir_deref_instr *src = + nir_instr_as_deref(copy->src[1].ssa->parent_instr); + split_deref_copy_instr(&b, dst, src); + + state.progress = true; + } } ralloc_free(state.dead_ctx); @@ -287,8 +329,6 @@ nir_split_var_copies(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 = split_var_copies_impl(function->impl) || progress;