From f051fa6ad7363556408f69594a487a84523871a9 Mon Sep 17 00:00:00 2001 From: Caio Marcelo de Oliveira Filho Date: Wed, 1 May 2019 14:44:15 -0700 Subject: [PATCH] nir: Add nir_address_format_null_value() Returns the nir_const_value * with the representation of the NULL pointer for each address format. Reviewed-by: Jason Ekstrand Reviewed-by: Bas Nieuwenhuizen --- src/compiler/nir/nir.h | 2 ++ src/compiler/nir/nir_lower_io.c | 20 ++++++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index 3d46250eade..7e51501e913 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -3165,6 +3165,8 @@ nir_address_format_to_glsl_type(nir_address_format addr_format) nir_address_format_num_components(addr_format)); } +const nir_const_value *nir_address_format_null_value(nir_address_format addr_format); + nir_ssa_def * nir_explicit_io_address_from_deref(struct nir_builder *b, nir_deref_instr *deref, nir_ssa_def *base_addr, diff --git a/src/compiler/nir/nir_lower_io.c b/src/compiler/nir/nir_lower_io.c index 153cd931f26..6f370173387 100644 --- a/src/compiler/nir/nir_lower_io.c +++ b/src/compiler/nir/nir_lower_io.c @@ -1230,3 +1230,23 @@ nir_get_io_vertex_index_src(nir_intrinsic_instr *instr) return NULL; } } + +/** + * Return the numeric constant that identify a NULL pointer for each address + * format. + */ +const nir_const_value * +nir_address_format_null_value(nir_address_format addr_format) +{ + const static nir_const_value null_values[][NIR_MAX_VEC_COMPONENTS] = { + [nir_address_format_32bit_global] = {{0}}, + [nir_address_format_64bit_global] = {{0}}, + [nir_address_format_64bit_bounded_global] = {{0}}, + [nir_address_format_32bit_index_offset] = {{.u32 = ~0}, {.u32 = ~0}}, + [nir_address_format_32bit_offset] = {{.u32 = ~0}}, + [nir_address_format_logical] = {{.u32 = ~0}}, + }; + + assert(addr_format < ARRAY_SIZE(null_values)); + return null_values[addr_format]; +} -- 2.30.2