X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Famd%2Fcompiler%2Faco_instruction_selection_setup.cpp;h=4f76289be45adc0eb8e7240ee5dffe364d115d56;hb=6e70508151823ce63e0976b4fa56e4d847a3c9b8;hp=4d4ff44101c4de242ec542837cbe1acd78dbe372;hpb=b35e583c17c647dd5605220ef0e8db28b879aae0;p=mesa.git diff --git a/src/amd/compiler/aco_instruction_selection_setup.cpp b/src/amd/compiler/aco_instruction_selection_setup.cpp index 4d4ff44101c..4f76289be45 100644 --- a/src/amd/compiler/aco_instruction_selection_setup.cpp +++ b/src/amd/compiler/aco_instruction_selection_setup.cpp @@ -26,6 +26,7 @@ #include #include "aco_ir.h" #include "nir.h" +#include "nir_control_flow.h" #include "vulkan/radv_shader.h" #include "vulkan/radv_descriptor_set.h" #include "vulkan/radv_shader_args.h" @@ -39,9 +40,27 @@ namespace aco { -struct vs_output_state { - uint8_t mask[VARYING_SLOT_VAR31 + 1]; - Temp outputs[VARYING_SLOT_VAR31 + 1][4]; +struct shader_io_state { + uint8_t mask[VARYING_SLOT_MAX]; + Temp temps[VARYING_SLOT_MAX * 4u]; + + shader_io_state() { + memset(mask, 0, sizeof(mask)); + std::fill_n(temps, VARYING_SLOT_MAX * 4u, Temp(0, RegClass::v1)); + } +}; + +enum resource_flags { + has_glc_vmem_load = 0x1, + has_nonglc_vmem_load = 0x2, + has_glc_vmem_store = 0x4, + has_nonglc_vmem_store = 0x8, + + has_vmem_store = has_glc_vmem_store | has_nonglc_vmem_store, + has_vmem_loadstore = has_vmem_store | has_glc_vmem_load | has_nonglc_vmem_load, + has_nonglc_vmem_loadstore = has_nonglc_vmem_load | has_nonglc_vmem_store, + + buffer_is_restrict = 0x10, }; struct isel_context { @@ -51,7 +70,6 @@ struct isel_context { nir_shader *shader; uint32_t constant_data_offset; Block *block; - bool *divergent_vals; std::unique_ptr allocated; std::unordered_map> allocated_vec; Stage stage; /* Stage */ @@ -68,25 +86,46 @@ struct isel_context { struct { bool is_divergent = false; } parent_if; - bool exec_potentially_empty = false; + bool exec_potentially_empty_discard = false; /* set to false when loop_nest_depth==0 && parent_if.is_divergent==false */ + uint16_t exec_potentially_empty_break_depth = UINT16_MAX; + /* Set to false when loop_nest_depth==exec_potentially_empty_break_depth + * and parent_if.is_divergent==false. Called _break but it's also used for + * loop continues. */ + bool exec_potentially_empty_break = false; std::unique_ptr nir_to_aco; /* NIR block index to ACO block index */ } cf_info; - Temp arg_temps[AC_MAX_ARGS]; + uint32_t resource_flag_offsets[MAX_SETS]; + std::vector buffer_resource_flags; - /* inputs common for merged stages */ - Temp merged_wave_info = Temp(0, s1); + Temp arg_temps[AC_MAX_ARGS]; /* FS inputs */ Temp persp_centroid, linear_centroid; - /* VS inputs */ - bool needs_instance_id; + /* GS inputs */ + Temp gs_wave_id; /* VS output information */ + bool export_clip_dists; unsigned num_clip_distances; unsigned num_cull_distances; - vs_output_state vs_output; + + /* tessellation information */ + unsigned tcs_tess_lvl_out_loc; + unsigned tcs_tess_lvl_in_loc; + uint64_t tcs_temp_only_inputs; + uint32_t tcs_num_inputs; + uint32_t tcs_num_outputs; + uint32_t tcs_num_patch_outputs; + uint32_t tcs_num_patches; + bool tcs_in_out_eq = false; + + /* I/O information */ + shader_io_state inputs; + shader_io_state outputs; + uint8_t output_drv_loc_to_var_slot[MESA_SHADER_COMPUTE][VARYING_SLOT_MAX]; + uint8_t output_tcs_patch_drv_loc_to_var_slot[VARYING_SLOT_MAX]; }; Temp get_arg(isel_context *ctx, struct ac_arg arg) @@ -123,13 +162,421 @@ unsigned get_interp_input(nir_intrinsic_op intrin, enum glsl_interp_mode interp) return 0; } +/* If one side of a divergent IF ends in a branch and the other doesn't, we + * might have to emit the contents of the side without the branch at the merge + * block instead. This is so that we can use any SGPR live-out of the side + * without the branch without creating a linear phi in the invert or merge block. */ +bool +sanitize_if(nir_function_impl *impl, nir_if *nif) +{ + //TODO: skip this if the condition is uniform and there are no divergent breaks/continues? + + nir_block *then_block = nir_if_last_then_block(nif); + nir_block *else_block = nir_if_last_else_block(nif); + bool then_jump = nir_block_ends_in_jump(then_block) || nir_block_is_unreachable(then_block); + bool else_jump = nir_block_ends_in_jump(else_block) || nir_block_is_unreachable(else_block); + if (then_jump == else_jump) + return false; + + /* If the continue from block is empty then return as there is nothing to + * move. + */ + if (nir_cf_list_is_empty_block(else_jump ? &nif->then_list : &nif->else_list)) + return false; + + /* Even though this if statement has a jump on one side, we may still have + * phis afterwards. Single-source phis can be produced by loop unrolling + * or dead control-flow passes and are perfectly legal. Run a quick phi + * removal on the block after the if to clean up any such phis. + */ + nir_opt_remove_phis_block(nir_cf_node_as_block(nir_cf_node_next(&nif->cf_node))); + + /* Finally, move the continue from branch after the if-statement. */ + nir_block *last_continue_from_blk = else_jump ? then_block : else_block; + nir_block *first_continue_from_blk = else_jump ? + nir_if_first_then_block(nif) : nir_if_first_else_block(nif); + + nir_cf_list tmp; + nir_cf_extract(&tmp, nir_before_block(first_continue_from_blk), + nir_after_block(last_continue_from_blk)); + nir_cf_reinsert(&tmp, nir_after_cf_node(&nif->cf_node)); + + /* nir_cf_extract() invalidates dominance metadata, but it should still be + * correct because of the specific type of transformation we did. Block + * indices are not valid except for block_0's, which is all we care about for + * nir_block_is_unreachable(). */ + impl->valid_metadata = + (nir_metadata)(impl->valid_metadata | nir_metadata_dominance | nir_metadata_block_index); + + return true; +} + +bool +sanitize_cf_list(nir_function_impl *impl, struct exec_list *cf_list) +{ + bool progress = false; + foreach_list_typed(nir_cf_node, cf_node, node, cf_list) { + switch (cf_node->type) { + case nir_cf_node_block: + break; + case nir_cf_node_if: { + nir_if *nif = nir_cf_node_as_if(cf_node); + progress |= sanitize_cf_list(impl, &nif->then_list); + progress |= sanitize_cf_list(impl, &nif->else_list); + progress |= sanitize_if(impl, nif); + break; + } + case nir_cf_node_loop: { + nir_loop *loop = nir_cf_node_as_loop(cf_node); + progress |= sanitize_cf_list(impl, &loop->body); + break; + } + case nir_cf_node_function: + unreachable("Invalid cf type"); + } + } + + return progress; +} + +void get_buffer_resource_flags(isel_context *ctx, nir_ssa_def *def, unsigned access, + uint8_t **flags, uint32_t *count) +{ + int desc_set = -1; + unsigned binding = 0; + + if (!def) { + /* global resources are considered aliasing with all other buffers and + * buffer images */ + // TODO: only merge flags of resources which can really alias. + } else if (def->parent_instr->type == nir_instr_type_intrinsic) { + nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(def->parent_instr); + if (intrin->intrinsic == nir_intrinsic_vulkan_resource_index) { + desc_set = nir_intrinsic_desc_set(intrin); + binding = nir_intrinsic_binding(intrin); + } + } else if (def->parent_instr->type == nir_instr_type_deref) { + nir_deref_instr *deref = nir_instr_as_deref(def->parent_instr); + assert(deref->type->is_image()); + if (deref->type->sampler_dimensionality != GLSL_SAMPLER_DIM_BUF) { + *flags = NULL; + *count = 0; + return; + } + + nir_variable *var = nir_deref_instr_get_variable(deref); + desc_set = var->data.descriptor_set; + binding = var->data.binding; + } + + if (desc_set < 0) { + *flags = ctx->buffer_resource_flags.data(); + *count = ctx->buffer_resource_flags.size(); + return; + } + + unsigned set_offset = ctx->resource_flag_offsets[desc_set]; + + if (!(ctx->buffer_resource_flags[set_offset + binding] & buffer_is_restrict)) { + /* Non-restrict buffers alias only with other non-restrict buffers. + * We reserve flags[0] for these. */ + *flags = ctx->buffer_resource_flags.data(); + *count = 1; + return; + } + + *flags = ctx->buffer_resource_flags.data() + set_offset + binding; + *count = 1; +} + +uint8_t get_all_buffer_resource_flags(isel_context *ctx, nir_ssa_def *def, unsigned access) +{ + uint8_t *flags; + uint32_t count; + get_buffer_resource_flags(ctx, def, access, &flags, &count); + + uint8_t res = 0; + for (unsigned i = 0; i < count; i++) + res |= flags[i]; + return res; +} + +bool can_subdword_ssbo_store_use_smem(nir_intrinsic_instr *intrin) +{ + unsigned wrmask = nir_intrinsic_write_mask(intrin); + if (util_last_bit(wrmask) != util_bitcount(wrmask) || + util_bitcount(wrmask) * intrin->src[0].ssa->bit_size % 32 || + util_bitcount(wrmask) != intrin->src[0].ssa->num_components) + return false; + + if (nir_intrinsic_align_mul(intrin) % 4 || nir_intrinsic_align_offset(intrin) % 4) + return false; + + return true; +} + +void fill_desc_set_info(isel_context *ctx, nir_function_impl *impl) +{ + radv_pipeline_layout *pipeline_layout = ctx->options->layout; + + unsigned resource_flag_count = 1; /* +1 to reserve flags[0] for aliased resources */ + for (unsigned i = 0; i < pipeline_layout->num_sets; i++) { + radv_descriptor_set_layout *layout = pipeline_layout->set[i].layout; + ctx->resource_flag_offsets[i] = resource_flag_count; + resource_flag_count += layout->binding_count; + } + ctx->buffer_resource_flags = std::vector(resource_flag_count); + + nir_foreach_variable_with_modes(var, impl->function->shader, nir_var_mem_ssbo) { + if (var->data.access & ACCESS_RESTRICT) { + uint32_t offset = ctx->resource_flag_offsets[var->data.descriptor_set]; + ctx->buffer_resource_flags[offset + var->data.binding] |= buffer_is_restrict; + } + } + + nir_foreach_block(block, impl) { + nir_foreach_instr(instr, block) { + if (instr->type != nir_instr_type_intrinsic) + continue; + nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr); + if (!(nir_intrinsic_infos[intrin->intrinsic].index_map[NIR_INTRINSIC_ACCESS])) + continue; + + nir_ssa_def *res = NULL; + unsigned access = nir_intrinsic_access(intrin); + unsigned flags = 0; + bool glc = access & (ACCESS_VOLATILE | ACCESS_COHERENT | ACCESS_NON_READABLE); + switch (intrin->intrinsic) { + case nir_intrinsic_load_ssbo: { + if (nir_dest_is_divergent(intrin->dest) && (!glc || ctx->program->chip_class >= GFX8)) + flags |= glc ? has_glc_vmem_load : has_nonglc_vmem_load; + res = intrin->src[0].ssa; + break; + } + case nir_intrinsic_ssbo_atomic_add: + case nir_intrinsic_ssbo_atomic_imin: + case nir_intrinsic_ssbo_atomic_umin: + case nir_intrinsic_ssbo_atomic_imax: + case nir_intrinsic_ssbo_atomic_umax: + case nir_intrinsic_ssbo_atomic_and: + case nir_intrinsic_ssbo_atomic_or: + case nir_intrinsic_ssbo_atomic_xor: + case nir_intrinsic_ssbo_atomic_exchange: + case nir_intrinsic_ssbo_atomic_comp_swap: + flags |= has_glc_vmem_load | has_glc_vmem_store; + res = intrin->src[0].ssa; + break; + case nir_intrinsic_store_ssbo: + if (nir_src_is_divergent(intrin->src[2]) || + ctx->program->chip_class < GFX8 || ctx->program->chip_class >= GFX10_3 || + (intrin->src[0].ssa->bit_size < 32 && !can_subdword_ssbo_store_use_smem(intrin))) + flags |= glc ? has_glc_vmem_store : has_nonglc_vmem_store; + res = intrin->src[1].ssa; + break; + case nir_intrinsic_load_global: + if (!(access & ACCESS_NON_WRITEABLE)) + flags |= glc ? has_glc_vmem_load : has_nonglc_vmem_load; + break; + case nir_intrinsic_store_global: + flags |= glc ? has_glc_vmem_store : has_nonglc_vmem_store; + break; + case nir_intrinsic_global_atomic_add: + case nir_intrinsic_global_atomic_imin: + case nir_intrinsic_global_atomic_umin: + case nir_intrinsic_global_atomic_imax: + case nir_intrinsic_global_atomic_umax: + case nir_intrinsic_global_atomic_and: + case nir_intrinsic_global_atomic_or: + case nir_intrinsic_global_atomic_xor: + case nir_intrinsic_global_atomic_exchange: + case nir_intrinsic_global_atomic_comp_swap: + flags |= has_glc_vmem_load | has_glc_vmem_store; + break; + case nir_intrinsic_image_deref_load: + res = intrin->src[0].ssa; + flags |= glc ? has_glc_vmem_load : has_nonglc_vmem_load; + break; + case nir_intrinsic_image_deref_store: + res = intrin->src[0].ssa; + flags |= (glc || ctx->program->chip_class == GFX6) ? has_glc_vmem_store : has_nonglc_vmem_store; + break; + case nir_intrinsic_image_deref_atomic_add: + case nir_intrinsic_image_deref_atomic_umin: + case nir_intrinsic_image_deref_atomic_imin: + case nir_intrinsic_image_deref_atomic_umax: + case nir_intrinsic_image_deref_atomic_imax: + case nir_intrinsic_image_deref_atomic_and: + case nir_intrinsic_image_deref_atomic_or: + case nir_intrinsic_image_deref_atomic_xor: + case nir_intrinsic_image_deref_atomic_exchange: + case nir_intrinsic_image_deref_atomic_comp_swap: + res = intrin->src[0].ssa; + flags |= has_glc_vmem_load | has_glc_vmem_store; + break; + default: + continue; + } + + uint8_t *flags_ptr; + uint32_t count; + get_buffer_resource_flags(ctx, res, access, &flags_ptr, &count); + + for (unsigned i = 0; i < count; i++) + flags_ptr[i] |= flags; + } + } +} + +void apply_nuw_to_ssa(nir_shader *shader, struct hash_table *range_ht, nir_ssa_def *ssa, + const nir_unsigned_upper_bound_config *config) +{ + nir_ssa_scalar scalar; + scalar.def = ssa; + scalar.comp = 0; + + if (!nir_ssa_scalar_is_alu(scalar) || nir_ssa_scalar_alu_op(scalar) != nir_op_iadd) + return; + + nir_alu_instr *add = nir_instr_as_alu(ssa->parent_instr); + + if (add->no_unsigned_wrap) + return; + + nir_ssa_scalar src0 = nir_ssa_scalar_chase_alu_src(scalar, 0); + nir_ssa_scalar src1 = nir_ssa_scalar_chase_alu_src(scalar, 1); + + if (nir_ssa_scalar_is_const(src0)) { + nir_ssa_scalar tmp = src0; + src0 = src1; + src1 = tmp; + } + + uint32_t src1_ub = nir_unsigned_upper_bound(shader, range_ht, src1, config); + add->no_unsigned_wrap = !nir_addition_might_overflow(shader, range_ht, src0, src1_ub, config); +} + +void apply_nuw_to_offsets(isel_context *ctx, nir_function_impl *impl) +{ + nir_unsigned_upper_bound_config config; + config.min_subgroup_size = 64; + config.max_subgroup_size = 64; + if (ctx->shader->info.stage == MESA_SHADER_COMPUTE && ctx->options->key.cs.subgroup_size) { + config.min_subgroup_size = ctx->options->key.cs.subgroup_size; + config.max_subgroup_size = ctx->options->key.cs.subgroup_size; + } + config.max_work_group_invocations = 2048; + config.max_work_group_count[0] = 65535; + config.max_work_group_count[1] = 65535; + config.max_work_group_count[2] = 65535; + config.max_work_group_size[0] = 2048; + config.max_work_group_size[1] = 2048; + config.max_work_group_size[2] = 2048; + for (unsigned i = 0; i < MAX_VERTEX_ATTRIBS; i++) { + unsigned attrib_format = ctx->options->key.vs.vertex_attribute_formats[i]; + unsigned dfmt = attrib_format & 0xf; + unsigned nfmt = (attrib_format >> 4) & 0x7; + + uint32_t max = UINT32_MAX; + if (nfmt == V_008F0C_BUF_NUM_FORMAT_UNORM) { + max = 0x3f800000u; + } else if (nfmt == V_008F0C_BUF_NUM_FORMAT_UINT || + nfmt == V_008F0C_BUF_NUM_FORMAT_USCALED) { + bool uscaled = nfmt == V_008F0C_BUF_NUM_FORMAT_USCALED; + switch (dfmt) { + case V_008F0C_BUF_DATA_FORMAT_8: + case V_008F0C_BUF_DATA_FORMAT_8_8: + case V_008F0C_BUF_DATA_FORMAT_8_8_8_8: + max = uscaled ? 0x437f0000u : UINT8_MAX; + break; + case V_008F0C_BUF_DATA_FORMAT_10_10_10_2: + case V_008F0C_BUF_DATA_FORMAT_2_10_10_10: + max = uscaled ? 0x447fc000u : 1023; + break; + case V_008F0C_BUF_DATA_FORMAT_10_11_11: + case V_008F0C_BUF_DATA_FORMAT_11_11_10: + max = uscaled ? 0x44ffe000u : 2047; + break; + case V_008F0C_BUF_DATA_FORMAT_16: + case V_008F0C_BUF_DATA_FORMAT_16_16: + case V_008F0C_BUF_DATA_FORMAT_16_16_16_16: + max = uscaled ? 0x477fff00u : UINT16_MAX; + break; + case V_008F0C_BUF_DATA_FORMAT_32: + case V_008F0C_BUF_DATA_FORMAT_32_32: + case V_008F0C_BUF_DATA_FORMAT_32_32_32: + case V_008F0C_BUF_DATA_FORMAT_32_32_32_32: + max = uscaled ? 0x4f800000u : UINT32_MAX; + break; + } + } + config.vertex_attrib_max[i] = max; + } + + struct hash_table *range_ht = _mesa_pointer_hash_table_create(NULL); + + nir_foreach_block(block, impl) { + nir_foreach_instr(instr, block) { + if (instr->type != nir_instr_type_intrinsic) + continue; + nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr); + + switch (intrin->intrinsic) { + case nir_intrinsic_load_constant: + case nir_intrinsic_load_uniform: + case nir_intrinsic_load_push_constant: + if (!nir_src_is_divergent(intrin->src[0])) + apply_nuw_to_ssa(ctx->shader, range_ht, intrin->src[0].ssa, &config); + break; + case nir_intrinsic_load_ubo: + case nir_intrinsic_load_ssbo: + if (!nir_src_is_divergent(intrin->src[1])) + apply_nuw_to_ssa(ctx->shader, range_ht, intrin->src[1].ssa, &config); + break; + case nir_intrinsic_store_ssbo: + if (!nir_src_is_divergent(intrin->src[2])) + apply_nuw_to_ssa(ctx->shader, range_ht, intrin->src[2].ssa, &config); + break; + default: + break; + } + } + } + + _mesa_hash_table_destroy(range_ht, NULL); +} + +RegClass get_reg_class(isel_context *ctx, RegType type, unsigned components, unsigned bitsize) +{ + if (bitsize == 1) + return RegClass(RegType::sgpr, ctx->program->lane_mask.size() * components); + else + return RegClass::get(type, components * bitsize / 8u); +} + void init_context(isel_context *ctx, nir_shader *shader) { nir_function_impl *impl = nir_shader_get_entrypoint(shader); unsigned lane_mask_size = ctx->program->lane_mask.size(); ctx->shader = shader; - ctx->divergent_vals = nir_divergence_analysis(shader, nir_divergence_view_index_uniform); + nir_divergence_analysis(shader, nir_divergence_view_index_uniform); + + fill_desc_set_info(ctx, impl); + + apply_nuw_to_offsets(ctx, impl); + + /* sanitize control flow */ + nir_metadata_require(impl, nir_metadata_dominance); + sanitize_cf_list(impl, &impl->body); + nir_metadata_preserve(impl, (nir_metadata)~nir_metadata_block_index); + + /* we'll need this for isel */ + nir_metadata_require(impl, nir_metadata_block_index); + + if (!(ctx->stage & sw_gs_copy) && ctx->options->dump_preoptir) { + fprintf(stderr, "NIR shader before instruction selection:\n"); + nir_print_shader(shader, stderr); + } std::unique_ptr allocated{new Temp[impl->ssa_alloc]()}; @@ -137,6 +584,7 @@ void init_context(isel_context *ctx, nir_shader *shader) std::unique_ptr nir_to_aco{new unsigned[impl->num_blocks]()}; + /* TODO: make this recursive to improve compile times and merge with fill_desc_set_info() */ bool done = false; while (!done) { done = true; @@ -145,9 +593,6 @@ void init_context(isel_context *ctx, nir_shader *shader) switch(instr->type) { case nir_instr_type_alu: { nir_alu_instr *alu_instr = nir_instr_as_alu(instr); - unsigned size = alu_instr->dest.dest.ssa.num_components; - if (alu_instr->dest.dest.ssa.bit_size == 64) - size *= 2; RegType type = RegType::sgpr; switch(alu_instr->op) { case nir_op_fmul: @@ -174,10 +619,15 @@ void init_context(isel_context *ctx, nir_shader *shader) case nir_op_fround_even: case nir_op_fsin: case nir_op_fcos: + case nir_op_f2f16: + case nir_op_f2f16_rtz: + case nir_op_f2f16_rtne: case nir_op_f2f32: case nir_op_f2f64: + case nir_op_u2f16: case nir_op_u2f32: case nir_op_u2f64: + case nir_op_i2f16: case nir_op_i2f32: case nir_op_i2f64: case nir_op_pack_half_2x16: @@ -197,82 +647,48 @@ void init_context(isel_context *ctx, nir_shader *shader) case nir_op_cube_face_coord: type = RegType::vgpr; break; - case nir_op_flt: - case nir_op_fge: - case nir_op_feq: - case nir_op_fne: - case nir_op_ilt: - case nir_op_ige: - case nir_op_ult: - case nir_op_uge: - case nir_op_ieq: - case nir_op_ine: - case nir_op_i2b1: - size = lane_mask_size; - break; + case nir_op_f2i16: + case nir_op_f2u16: + case nir_op_f2i32: + case nir_op_f2u32: case nir_op_f2i64: case nir_op_f2u64: + case nir_op_b2i8: + case nir_op_b2i16: case nir_op_b2i32: + case nir_op_b2i64: + case nir_op_b2b32: + case nir_op_b2f16: case nir_op_b2f32: - case nir_op_f2i32: - case nir_op_f2u32: - type = ctx->divergent_vals[alu_instr->dest.dest.ssa.index] ? RegType::vgpr : RegType::sgpr; - break; - case nir_op_bcsel: - if (alu_instr->dest.dest.ssa.bit_size == 1) { - size = lane_mask_size; - } else { - if (ctx->divergent_vals[alu_instr->dest.dest.ssa.index]) { - type = RegType::vgpr; - } else { - if (allocated[alu_instr->src[1].src.ssa->index].type() == RegType::vgpr || - allocated[alu_instr->src[2].src.ssa->index].type() == RegType::vgpr) { - type = RegType::vgpr; - } - } - if (alu_instr->src[1].src.ssa->num_components == 1 && alu_instr->src[2].src.ssa->num_components == 1) { - assert(allocated[alu_instr->src[1].src.ssa->index].size() == allocated[alu_instr->src[2].src.ssa->index].size()); - size = allocated[alu_instr->src[1].src.ssa->index].size(); - } - } - break; case nir_op_mov: - if (alu_instr->dest.dest.ssa.bit_size == 1) { - size = lane_mask_size; - } else { - type = ctx->divergent_vals[alu_instr->dest.dest.ssa.index] ? RegType::vgpr : RegType::sgpr; - } + type = nir_dest_is_divergent(alu_instr->dest.dest) ? RegType::vgpr : RegType::sgpr; break; + case nir_op_bcsel: + type = nir_dest_is_divergent(alu_instr->dest.dest) ? RegType::vgpr : RegType::sgpr; + /* fallthrough */ default: - if (alu_instr->dest.dest.ssa.bit_size == 1) { - size = lane_mask_size; - } else { - for (unsigned i = 0; i < nir_op_infos[alu_instr->op].num_inputs; i++) { - if (allocated[alu_instr->src[i].src.ssa->index].type() == RegType::vgpr) - type = RegType::vgpr; - } + for (unsigned i = 0; i < nir_op_infos[alu_instr->op].num_inputs; i++) { + if (allocated[alu_instr->src[i].src.ssa->index].type() == RegType::vgpr) + type = RegType::vgpr; } break; } - allocated[alu_instr->dest.dest.ssa.index] = Temp(0, RegClass(type, size)); + + RegClass rc = get_reg_class(ctx, type, alu_instr->dest.dest.ssa.num_components, alu_instr->dest.dest.ssa.bit_size); + allocated[alu_instr->dest.dest.ssa.index] = Temp(0, rc); break; } case nir_instr_type_load_const: { - unsigned size = nir_instr_as_load_const(instr)->def.num_components; - if (nir_instr_as_load_const(instr)->def.bit_size == 64) - size *= 2; - else if (nir_instr_as_load_const(instr)->def.bit_size == 1) - size *= lane_mask_size; - allocated[nir_instr_as_load_const(instr)->def.index] = Temp(0, RegClass(RegType::sgpr, size)); + unsigned num_components = nir_instr_as_load_const(instr)->def.num_components; + unsigned bit_size = nir_instr_as_load_const(instr)->def.bit_size; + RegClass rc = get_reg_class(ctx, RegType::sgpr, num_components, bit_size); + allocated[nir_instr_as_load_const(instr)->def.index] = Temp(0, rc); break; } case nir_instr_type_intrinsic: { nir_intrinsic_instr *intrinsic = nir_instr_as_intrinsic(instr); if (!nir_intrinsic_infos[intrinsic->intrinsic].has_dest) break; - unsigned size = intrinsic->dest.ssa.num_components; - if (intrinsic->dest.ssa.bit_size == 64) - size *= 2; RegType type = RegType::sgpr; switch(intrinsic->intrinsic) { case nir_intrinsic_load_push_constant: @@ -288,20 +704,21 @@ void init_context(isel_context *ctx, nir_shader *shader) case nir_intrinsic_read_first_invocation: case nir_intrinsic_read_invocation: case nir_intrinsic_first_invocation: - type = RegType::sgpr; - if (intrinsic->dest.ssa.bit_size == 1) - size = lane_mask_size; - break; case nir_intrinsic_ballot: type = RegType::sgpr; break; case nir_intrinsic_load_sample_id: case nir_intrinsic_load_sample_mask_in: case nir_intrinsic_load_input: + case nir_intrinsic_load_output: + case nir_intrinsic_load_input_vertex: + case nir_intrinsic_load_per_vertex_input: + case nir_intrinsic_load_per_vertex_output: case nir_intrinsic_load_vertex_id: case nir_intrinsic_load_vertex_id_zero_base: case nir_intrinsic_load_barycentric_sample: case nir_intrinsic_load_barycentric_pixel: + case nir_intrinsic_load_barycentric_model: case nir_intrinsic_load_barycentric_centroid: case nir_intrinsic_load_barycentric_at_sample: case nir_intrinsic_load_barycentric_at_offset: @@ -312,6 +729,7 @@ void init_context(isel_context *ctx, nir_shader *shader) case nir_intrinsic_load_local_invocation_id: case nir_intrinsic_load_local_invocation_index: case nir_intrinsic_load_subgroup_invocation: + case nir_intrinsic_load_tess_coord: case nir_intrinsic_write_invocation_amd: case nir_intrinsic_mbcnt_amd: case nir_intrinsic_load_instance_id: @@ -356,7 +774,10 @@ void init_context(isel_context *ctx, nir_shader *shader) case nir_intrinsic_shared_atomic_xor: case nir_intrinsic_shared_atomic_exchange: case nir_intrinsic_shared_atomic_comp_swap: + case nir_intrinsic_shared_atomic_fadd: case nir_intrinsic_load_scratch: + case nir_intrinsic_load_invocation_id: + case nir_intrinsic_load_primitive_id: type = RegType::vgpr; break; case nir_intrinsic_shuffle: @@ -368,46 +789,16 @@ void init_context(isel_context *ctx, nir_shader *shader) case nir_intrinsic_masked_swizzle_amd: case nir_intrinsic_inclusive_scan: case nir_intrinsic_exclusive_scan: - if (intrinsic->dest.ssa.bit_size == 1) { - size = lane_mask_size; - type = RegType::sgpr; - } else if (!ctx->divergent_vals[intrinsic->dest.ssa.index]) { - type = RegType::sgpr; - } else { - type = RegType::vgpr; - } - break; - case nir_intrinsic_load_view_index: - type = ctx->stage == fragment_fs ? RegType::vgpr : RegType::sgpr; - break; - case nir_intrinsic_load_front_face: - case nir_intrinsic_load_helper_invocation: - case nir_intrinsic_is_helper_invocation: - type = RegType::sgpr; - size = lane_mask_size; - break; case nir_intrinsic_reduce: - if (intrinsic->dest.ssa.bit_size == 1) { - size = lane_mask_size; - type = RegType::sgpr; - } else if (!ctx->divergent_vals[intrinsic->dest.ssa.index]) { - type = RegType::sgpr; - } else { - type = RegType::vgpr; - } - break; case nir_intrinsic_load_ubo: case nir_intrinsic_load_ssbo: case nir_intrinsic_load_global: case nir_intrinsic_vulkan_resource_index: - type = ctx->divergent_vals[intrinsic->dest.ssa.index] ? RegType::vgpr : RegType::sgpr; - break; - /* due to copy propagation, the swizzled imov is removed if num dest components == 1 */ case nir_intrinsic_load_shared: - if (ctx->divergent_vals[intrinsic->dest.ssa.index]) - type = RegType::vgpr; - else - type = RegType::sgpr; + type = nir_dest_is_divergent(intrinsic->dest) ? RegType::vgpr : RegType::sgpr; + break; + case nir_intrinsic_load_view_index: + type = ctx->stage == fragment_fs ? RegType::vgpr : RegType::sgpr; break; default: for (unsigned i = 0; i < nir_intrinsic_infos[intrinsic->intrinsic].num_srcs; i++) { @@ -416,7 +807,8 @@ void init_context(isel_context *ctx, nir_shader *shader) } break; } - allocated[intrinsic->dest.ssa.index] = Temp(0, RegClass(type, size)); + RegClass rc = get_reg_class(ctx, type, intrinsic->dest.ssa.num_components, intrinsic->dest.ssa.bit_size); + allocated[intrinsic->dest.ssa.index] = Temp(0, rc); switch(intrinsic->intrinsic) { case nir_intrinsic_load_barycentric_sample: @@ -428,6 +820,9 @@ void init_context(isel_context *ctx, nir_shader *shader) spi_ps_inputs |= get_interp_input(intrinsic->intrinsic, mode); break; } + case nir_intrinsic_load_barycentric_model: + spi_ps_inputs |= S_0286CC_PERSP_PULL_MODEL_ENA(1); + break; case nir_intrinsic_load_front_face: spi_ps_inputs |= S_0286CC_FRONT_FACE_ENA(1); break; @@ -459,9 +854,10 @@ void init_context(isel_context *ctx, nir_shader *shader) if (tex->dest.ssa.bit_size == 64) size *= 2; - if (tex->op == nir_texop_texture_samples) - assert(!ctx->divergent_vals[tex->dest.ssa.index]); - if (ctx->divergent_vals[tex->dest.ssa.index]) + if (tex->op == nir_texop_texture_samples) { + assert(!tex->dest.ssa.divergent); + } + if (nir_dest_is_divergent(tex->dest)) allocated[tex->dest.ssa.index] = Temp(0, RegClass(RegType::vgpr, size)); else allocated[tex->dest.ssa.index] = Temp(0, RegClass(RegType::sgpr, size)); @@ -474,10 +870,10 @@ void init_context(isel_context *ctx, nir_shader *shader) break; } case nir_instr_type_ssa_undef: { - unsigned size = nir_instr_as_ssa_undef(instr)->def.num_components; - if (nir_instr_as_ssa_undef(instr)->def.bit_size == 64) - size *= 2; - allocated[nir_instr_as_ssa_undef(instr)->def.index] = Temp(0, RegClass(RegType::sgpr, size)); + unsigned num_components = nir_instr_as_ssa_undef(instr)->def.num_components; + unsigned bit_size = nir_instr_as_ssa_undef(instr)->def.bit_size; + RegClass rc = get_reg_class(ctx, RegType::sgpr, num_components, bit_size); + allocated[nir_instr_as_ssa_undef(instr)->def.index] = Temp(0, rc); break; } case nir_instr_type_phi: { @@ -493,7 +889,7 @@ void init_context(isel_context *ctx, nir_shader *shader) break; } - if (ctx->divergent_vals[phi->dest.ssa.index]) { + if (nir_dest_is_divergent(phi->dest)) { type = RegType::vgpr; } else { type = RegType::sgpr; @@ -505,8 +901,7 @@ void init_context(isel_context *ctx, nir_shader *shader) } } - size *= phi->dest.ssa.bit_size == 64 ? 2 : 1; - RegClass rc = RegClass(type, size); + RegClass rc = get_reg_class(ctx, type, phi->dest.ssa.num_components, phi->dest.ssa.bit_size); if (rc != allocated[phi->dest.ssa.index].regClass()) { done = false; } else { @@ -541,6 +936,14 @@ void init_context(isel_context *ctx, nir_shader *shader) ctx->allocated.reset(allocated.release()); ctx->cf_info.nir_to_aco.reset(nir_to_aco.release()); + + /* align and copy constant data */ + while (ctx->program->constant_data.size() % 4u) + ctx->program->constant_data.push_back(0); + ctx->constant_data_offset = ctx->program->constant_data.size(); + ctx->program->constant_data.insert(ctx->program->constant_data.end(), + (uint8_t*)shader->constant_data, + (uint8_t*)shader->constant_data + shader->constant_data_size); } Pseudo_instruction *add_startpgm(struct isel_context *ctx) @@ -626,7 +1029,7 @@ mem_vectorize_callback(unsigned align, unsigned bit_size, unsigned num_components, unsigned high_offset, nir_intrinsic_instr *low, nir_intrinsic_instr *high) { - if ((bit_size != 32 && bit_size != 64) || num_components > 4) + if (num_components > 4) return false; /* >128 bit loads are split except with SMEM */ @@ -634,11 +1037,13 @@ mem_vectorize_callback(unsigned align, unsigned bit_size, return false; switch (low->intrinsic) { - case nir_intrinsic_load_ubo: - case nir_intrinsic_load_ssbo: + case nir_intrinsic_load_global: + case nir_intrinsic_store_global: case nir_intrinsic_store_ssbo: + case nir_intrinsic_load_ssbo: + case nir_intrinsic_load_ubo: case nir_intrinsic_load_push_constant: - return align % 4 == 0; + return align % (bit_size == 8 ? 2 : 4) == 0; case nir_intrinsic_load_deref: case nir_intrinsic_store_deref: assert(nir_src_as_deref(low->src[0])->mode == nir_var_mem_shared); @@ -648,7 +1053,7 @@ mem_vectorize_callback(unsigned align, unsigned bit_size, if (bit_size * num_components > 64) /* 96 and 128 bit loads require 128 bit alignment and are split otherwise */ return align % 16 == 0; else - return align % 4 == 0; + return align % (bit_size == 8 ? 2 : 4) == 0; default: return false; } @@ -656,46 +1061,26 @@ mem_vectorize_callback(unsigned align, unsigned bit_size, } void -setup_vs_variables(isel_context *ctx, nir_shader *nir) +setup_vs_output_info(isel_context *ctx, nir_shader *nir, + bool export_prim_id, bool export_clip_dists, + radv_vs_output_info *outinfo) { - nir_foreach_variable(variable, &nir->inputs) - { - variable->data.driver_location = variable->data.location * 4; - } - nir_foreach_variable(variable, &nir->outputs) - { - variable->data.driver_location = variable->data.location * 4; - } - - radv_vs_output_info *outinfo = &ctx->program->info->vs.outinfo; - memset(outinfo->vs_output_param_offset, AC_EXP_PARAM_UNDEFINED, sizeof(outinfo->vs_output_param_offset)); - ctx->needs_instance_id = ctx->program->info->vs.needs_instance_id; - - bool export_clip_dists = ctx->options->key.vs_common_out.export_clip_dists; - outinfo->param_exports = 0; int pos_written = 0x1; if (outinfo->writes_pointsize || outinfo->writes_viewport_index || outinfo->writes_layer) pos_written |= 1 << 1; - nir_foreach_variable(variable, &nir->outputs) - { - int idx = variable->data.location; - unsigned slots = variable->type->count_attribute_slots(false); - if (variable->data.compact) { - unsigned component_count = variable->data.location_frac + variable->type->length; - slots = (component_count + 3) / 4; - } - - if (idx >= VARYING_SLOT_VAR0 || idx == VARYING_SLOT_LAYER || idx == VARYING_SLOT_PRIMITIVE_ID || + uint64_t mask = nir->info.outputs_written; + while (mask) { + int idx = u_bit_scan64(&mask); + if (idx >= VARYING_SLOT_VAR0 || idx == VARYING_SLOT_LAYER || + idx == VARYING_SLOT_PRIMITIVE_ID || idx == VARYING_SLOT_VIEWPORT || ((idx == VARYING_SLOT_CLIP_DIST0 || idx == VARYING_SLOT_CLIP_DIST1) && export_clip_dists)) { - for (unsigned i = 0; i < slots; i++) { - if (outinfo->vs_output_param_offset[idx + i] == AC_EXP_PARAM_UNDEFINED) - outinfo->vs_output_param_offset[idx + i] = outinfo->param_exports++; - } + if (outinfo->vs_output_param_offset[idx] == AC_EXP_PARAM_UNDEFINED) + outinfo->vs_output_param_offset[idx] = outinfo->param_exports++; } } if (outinfo->writes_layer && @@ -705,11 +1090,12 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir) outinfo->vs_output_param_offset[VARYING_SLOT_LAYER] = outinfo->param_exports++; } - if (outinfo->export_prim_id) { + if (export_prim_id) { assert(outinfo->vs_output_param_offset[VARYING_SLOT_PRIMITIVE_ID] == AC_EXP_PARAM_UNDEFINED); outinfo->vs_output_param_offset[VARYING_SLOT_PRIMITIVE_ID] = outinfo->param_exports++; } + ctx->export_clip_dists = export_clip_dists; ctx->num_clip_distances = util_bitcount(outinfo->clip_dist_mask); ctx->num_cull_distances = util_bitcount(outinfo->cull_dist_mask); @@ -723,12 +1109,146 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir) outinfo->pos_exports = util_bitcount(pos_written); } +void +setup_vs_variables(isel_context *ctx, nir_shader *nir) +{ + nir_foreach_shader_in_variable(variable, nir) + { + variable->data.driver_location = variable->data.location * 4; + } + nir_foreach_shader_out_variable(variable, nir) + { + if (ctx->stage == vertex_vs || ctx->stage == ngg_vertex_gs) + variable->data.driver_location = variable->data.location * 4; + + assert(variable->data.location >= 0 && variable->data.location <= UINT8_MAX); + ctx->output_drv_loc_to_var_slot[MESA_SHADER_VERTEX][variable->data.driver_location / 4] = variable->data.location; + } + + if (ctx->stage == vertex_vs || ctx->stage == ngg_vertex_gs) { + radv_vs_output_info *outinfo = &ctx->program->info->vs.outinfo; + setup_vs_output_info(ctx, nir, outinfo->export_prim_id, + ctx->options->key.vs_common_out.export_clip_dists, outinfo); + } else if (ctx->stage == vertex_ls) { + ctx->tcs_num_inputs = ctx->program->info->vs.num_linked_outputs; + } + + if (ctx->stage == ngg_vertex_gs && ctx->args->options->key.vs_common_out.export_prim_id) { + /* We need to store the primitive IDs in LDS */ + unsigned lds_size = ctx->program->info->ngg_info.esgs_ring_size; + ctx->program->config->lds_size = (lds_size + ctx->program->lds_alloc_granule - 1) / + ctx->program->lds_alloc_granule; + } +} + +void setup_gs_variables(isel_context *ctx, nir_shader *nir) +{ + if (ctx->stage == vertex_geometry_gs || ctx->stage == tess_eval_geometry_gs) + ctx->program->config->lds_size = ctx->program->info->gs_ring_info.lds_size; /* Already in units of the alloc granularity */ + + nir_foreach_shader_out_variable(variable, nir) { + variable->data.driver_location = variable->data.location * 4; + } + + if (ctx->stage == vertex_geometry_gs) + ctx->program->info->gs.es_type = MESA_SHADER_VERTEX; + else if (ctx->stage == tess_eval_geometry_gs) + ctx->program->info->gs.es_type = MESA_SHADER_TESS_EVAL; +} + +void +setup_tcs_info(isel_context *ctx, nir_shader *nir, nir_shader *vs) +{ + /* When the number of TCS input and output vertices are the same (typically 3): + * - There is an equal amount of LS and HS invocations + * - In case of merged LSHS shaders, the LS and HS halves of the shader + * always process the exact same vertex. We can use this knowledge to optimize them. + * + * We don't set tcs_in_out_eq if the float controls differ because that might + * involve different float modes for the same block and our optimizer + * doesn't handle a instruction dominating another with a different mode. + */ + ctx->tcs_in_out_eq = + ctx->stage == vertex_tess_control_hs && + ctx->args->options->key.tcs.input_vertices == nir->info.tess.tcs_vertices_out && + vs->info.float_controls_execution_mode == nir->info.float_controls_execution_mode; + + if (ctx->tcs_in_out_eq) { + ctx->tcs_temp_only_inputs = ~nir->info.tess.tcs_cross_invocation_inputs_read & + ~nir->info.inputs_read_indirectly & + nir->info.inputs_read; + } + + ctx->tcs_num_inputs = ctx->program->info->tcs.num_linked_inputs; + ctx->tcs_num_outputs = ctx->program->info->tcs.num_linked_outputs; + ctx->tcs_num_patch_outputs = ctx->program->info->tcs.num_linked_patch_outputs; + + ctx->tcs_num_patches = get_tcs_num_patches( + ctx->args->options->key.tcs.input_vertices, + nir->info.tess.tcs_vertices_out, + ctx->tcs_num_inputs, + ctx->tcs_num_outputs, + ctx->tcs_num_patch_outputs, + ctx->args->options->tess_offchip_block_dw_size, + ctx->args->options->chip_class, + ctx->args->options->family); + unsigned lds_size = calculate_tess_lds_size( + ctx->args->options->chip_class, + ctx->args->options->key.tcs.input_vertices, + nir->info.tess.tcs_vertices_out, + ctx->tcs_num_inputs, + ctx->tcs_num_patches, + ctx->tcs_num_outputs, + ctx->tcs_num_patch_outputs); + + ctx->args->shader_info->tcs.num_patches = ctx->tcs_num_patches; + ctx->args->shader_info->tcs.num_lds_blocks = lds_size; + ctx->program->config->lds_size = (lds_size + ctx->program->lds_alloc_granule - 1) / + ctx->program->lds_alloc_granule; +} + +void +setup_tcs_variables(isel_context *ctx, nir_shader *nir) +{ + nir_foreach_shader_out_variable(variable, nir) { + assert(variable->data.location >= 0 && variable->data.location <= UINT8_MAX); + + if (variable->data.location == VARYING_SLOT_TESS_LEVEL_OUTER) + ctx->tcs_tess_lvl_out_loc = variable->data.driver_location * 4u; + else if (variable->data.location == VARYING_SLOT_TESS_LEVEL_INNER) + ctx->tcs_tess_lvl_in_loc = variable->data.driver_location * 4u; + + if (variable->data.patch) + ctx->output_tcs_patch_drv_loc_to_var_slot[variable->data.driver_location / 4] = variable->data.location; + else + ctx->output_drv_loc_to_var_slot[MESA_SHADER_TESS_CTRL][variable->data.driver_location / 4] = variable->data.location; + } +} + +void +setup_tes_variables(isel_context *ctx, nir_shader *nir) +{ + ctx->tcs_num_patches = ctx->args->options->key.tes.num_patches; + ctx->tcs_num_outputs = ctx->program->info->tes.num_linked_inputs; + + nir_foreach_shader_out_variable(variable, nir) { + if (ctx->stage == tess_eval_vs || ctx->stage == ngg_tess_eval_gs) + variable->data.driver_location = variable->data.location * 4; + } + + if (ctx->stage == tess_eval_vs || ctx->stage == ngg_tess_eval_gs) { + radv_vs_output_info *outinfo = &ctx->program->info->tes.outinfo; + setup_vs_output_info(ctx, nir, outinfo->export_prim_id, + ctx->options->key.vs_common_out.export_clip_dists, outinfo); + } +} + void setup_variables(isel_context *ctx, nir_shader *nir) { switch (nir->info.stage) { case MESA_SHADER_FRAGMENT: { - nir_foreach_variable(variable, &nir->outputs) + nir_foreach_shader_out_variable(variable, nir) { int idx = variable->data.location + variable->data.index; variable->data.driver_location = idx * 4; @@ -744,81 +1264,228 @@ setup_variables(isel_context *ctx, nir_shader *nir) setup_vs_variables(ctx, nir); break; } + case MESA_SHADER_GEOMETRY: { + setup_gs_variables(ctx, nir); + break; + } + case MESA_SHADER_TESS_CTRL: { + setup_tcs_variables(ctx, nir); + break; + } + case MESA_SHADER_TESS_EVAL: { + setup_tes_variables(ctx, nir); + break; + } default: unreachable("Unhandled shader stage."); } } +unsigned +lower_bit_size_callback(const nir_alu_instr *alu, void *_) +{ + if (nir_op_is_vec(alu->op)) + return 0; + + unsigned bit_size = alu->dest.dest.ssa.bit_size; + if (nir_alu_instr_is_comparison(alu)) + bit_size = nir_src_bit_size(alu->src[0].src); + + if (bit_size >= 32 || bit_size == 1) + return 0; + + if (alu->op == nir_op_bcsel) + return 0; + + const nir_op_info *info = &nir_op_infos[alu->op]; + + if (info->is_conversion) + return 0; + + bool is_integer = info->output_type & (nir_type_uint | nir_type_int); + for (unsigned i = 0; is_integer && (i < info->num_inputs); i++) + is_integer = info->input_types[i] & (nir_type_uint | nir_type_int); + + return is_integer ? 32 : 0; +} + +void +setup_nir(isel_context *ctx, nir_shader *nir) +{ + /* the variable setup has to be done before lower_io / CSE */ + setup_variables(ctx, nir); + + /* optimize and lower memory operations */ + if (nir_lower_explicit_io(nir, nir_var_mem_global, nir_address_format_64bit_global)) { + nir_opt_constant_folding(nir); + nir_opt_cse(nir); + } + + bool lower_to_scalar = false; + bool lower_pack = false; + nir_variable_mode robust_modes = (nir_variable_mode)0; + + if (ctx->options->robust_buffer_access) { + robust_modes = (nir_variable_mode)(nir_var_mem_ubo | + nir_var_mem_ssbo | + nir_var_mem_global | + nir_var_mem_push_const); + } + + if (nir_opt_load_store_vectorize(nir, + (nir_variable_mode)(nir_var_mem_ssbo | nir_var_mem_ubo | + nir_var_mem_push_const | nir_var_mem_shared | + nir_var_mem_global), + mem_vectorize_callback, robust_modes)) { + lower_to_scalar = true; + lower_pack = true; + } + if (nir->info.stage != MESA_SHADER_COMPUTE) + nir_lower_io(nir, (nir_variable_mode)(nir_var_shader_in | nir_var_shader_out), type_size, (nir_lower_io_options)0); + + lower_to_scalar |= nir_opt_shrink_vectors(nir); + + if (lower_to_scalar) + nir_lower_alu_to_scalar(nir, NULL, NULL); + if (lower_pack) + nir_lower_pack(nir); + + /* lower ALU operations */ + nir_lower_int64(nir); + + if (nir_lower_bit_size(nir, lower_bit_size_callback, NULL)) + nir_copy_prop(nir); /* allow nir_opt_idiv_const() to optimize lowered divisions */ + + nir_opt_idiv_const(nir, 32); + nir_lower_idiv(nir, nir_lower_idiv_precise); + + /* optimize the lowered ALU operations */ + bool more_algebraic = true; + while (more_algebraic) { + more_algebraic = false; + NIR_PASS_V(nir, nir_copy_prop); + NIR_PASS_V(nir, nir_opt_dce); + NIR_PASS_V(nir, nir_opt_constant_folding); + NIR_PASS(more_algebraic, nir, nir_opt_algebraic); + } + + /* Do late algebraic optimization to turn add(a, neg(b)) back into + * subs, then the mandatory cleanup after algebraic. Note that it may + * produce fnegs, and if so then we need to keep running to squash + * fneg(fneg(a)). + */ + bool more_late_algebraic = true; + while (more_late_algebraic) { + more_late_algebraic = false; + NIR_PASS(more_late_algebraic, nir, nir_opt_algebraic_late); + NIR_PASS_V(nir, nir_opt_constant_folding); + NIR_PASS_V(nir, nir_copy_prop); + NIR_PASS_V(nir, nir_opt_dce); + NIR_PASS_V(nir, nir_opt_cse); + } + + /* cleanup passes */ + nir_lower_load_const_to_scalar(nir); + nir_move_options move_opts = (nir_move_options)( + nir_move_const_undef | nir_move_load_ubo | nir_move_load_input | + nir_move_comparisons | nir_move_copies); + nir_opt_sink(nir, move_opts); + nir_opt_move(nir, move_opts); + nir_convert_to_lcssa(nir, true, false); + nir_lower_phis_to_scalar(nir); + + nir_function_impl *func = nir_shader_get_entrypoint(nir); + nir_index_ssa_defs(func); +} + +void +setup_xnack(Program *program) +{ + switch (program->family) { + /* GFX8 APUs */ + case CHIP_CARRIZO: + case CHIP_STONEY: + /* GFX9 APUS */ + case CHIP_RAVEN: + case CHIP_RAVEN2: + case CHIP_RENOIR: + program->xnack_enabled = true; + break; + default: + break; + } +} + isel_context setup_isel_context(Program* program, unsigned shader_count, struct nir_shader *const *shaders, ac_shader_config* config, - struct radv_shader_args *args) + struct radv_shader_args *args, + bool is_gs_copy_shader) { - program->stage = 0; + Stage stage = 0; for (unsigned i = 0; i < shader_count; i++) { switch (shaders[i]->info.stage) { case MESA_SHADER_VERTEX: - program->stage |= sw_vs; + stage |= sw_vs; break; case MESA_SHADER_TESS_CTRL: - program->stage |= sw_tcs; + stage |= sw_tcs; break; case MESA_SHADER_TESS_EVAL: - program->stage |= sw_tes; + stage |= sw_tes; break; case MESA_SHADER_GEOMETRY: - program->stage |= sw_gs; + stage |= is_gs_copy_shader ? sw_gs_copy : sw_gs; break; case MESA_SHADER_FRAGMENT: - program->stage |= sw_fs; + stage |= sw_fs; break; case MESA_SHADER_COMPUTE: - program->stage |= sw_cs; + stage |= sw_cs; break; default: unreachable("Shader stage not implemented"); } } - if (program->stage == sw_vs) - program->stage |= hw_vs; - else if (program->stage == sw_fs) - program->stage |= hw_fs; - else if (program->stage == sw_cs) - program->stage |= hw_cs; + bool gfx9_plus = args->options->chip_class >= GFX9; + bool ngg = args->shader_info->is_ngg && args->options->chip_class >= GFX10; + if (stage == sw_vs && args->shader_info->vs.as_es && !ngg) + stage |= hw_es; + else if (stage == sw_vs && !args->shader_info->vs.as_ls && !ngg) + stage |= hw_vs; + else if (stage == sw_vs && ngg) + stage |= hw_ngg_gs; /* GFX10/NGG: VS without GS uses the HW GS stage */ + else if (stage == sw_gs) + stage |= hw_gs; + else if (stage == sw_fs) + stage |= hw_fs; + else if (stage == sw_cs) + stage |= hw_cs; + else if (stage == sw_gs_copy) + stage |= hw_vs; + else if (stage == (sw_vs | sw_gs) && gfx9_plus && !ngg) + stage |= hw_gs; + else if (stage == sw_vs && args->shader_info->vs.as_ls) + stage |= hw_ls; /* GFX6-8: VS is a Local Shader, when tessellation is used */ + else if (stage == sw_tcs) + stage |= hw_hs; /* GFX6-8: TCS is a Hull Shader */ + else if (stage == (sw_vs | sw_tcs)) + stage |= hw_hs; /* GFX9-10: VS+TCS merged into a Hull Shader */ + else if (stage == sw_tes && !args->shader_info->tes.as_es && !ngg) + stage |= hw_vs; /* GFX6-9: TES without GS uses the HW VS stage (and GFX10/legacy) */ + else if (stage == sw_tes && !args->shader_info->tes.as_es && ngg) + stage |= hw_ngg_gs; /* GFX10/NGG: TES without GS uses the HW GS stage */ + else if (stage == sw_tes && args->shader_info->tes.as_es && !ngg) + stage |= hw_es; /* GFX6-8: TES is an Export Shader */ + else if (stage == (sw_tes | sw_gs) && gfx9_plus && !ngg) + stage |= hw_gs; /* GFX9: TES+GS merged into a GS (and GFX10/legacy) */ else unreachable("Shader stage not implemented"); - program->config = config; - program->info = args->shader_info; - program->chip_class = args->options->chip_class; - program->family = args->options->family; - program->wave_size = args->shader_info->wave_size; - program->lane_mask = program->wave_size == 32 ? s1 : s2; - - program->lds_alloc_granule = args->options->chip_class >= GFX7 ? 512 : 256; - program->lds_limit = args->options->chip_class >= GFX7 ? 65536 : 32768; - program->vgpr_limit = 256; - - if (args->options->chip_class >= GFX10) { - program->physical_sgprs = 2560; /* doesn't matter as long as it's at least 128 * 20 */ - program->sgpr_alloc_granule = 127; - program->sgpr_limit = 106; - } else if (program->chip_class >= GFX8) { - program->physical_sgprs = 800; - program->sgpr_alloc_granule = 15; - if (args->options->family == CHIP_TONGA || args->options->family == CHIP_ICELAND) - program->sgpr_limit = 94; /* workaround hardware bug */ - else - program->sgpr_limit = 102; - } else { - program->physical_sgprs = 512; - program->sgpr_alloc_granule = 7; - program->sgpr_limit = 104; - } - /* TODO: we don't have to allocate VCC if we don't need it */ - program->needs_vcc = true; + init_program(program, stage, args->shader_info, + args->options->chip_class, args->options->family, config); isel_context ctx = {}; ctx.program = program; @@ -826,100 +1493,73 @@ setup_isel_context(Program* program, ctx.options = args->options; ctx.stage = program->stage; - for (unsigned i = 0; i < shader_count; i++) { - nir_shader *nir = shaders[i]; - - /* align and copy constant data */ - while (program->constant_data.size() % 4u) - program->constant_data.push_back(0); - ctx.constant_data_offset = program->constant_data.size(); - program->constant_data.insert(program->constant_data.end(), - (uint8_t*)nir->constant_data, - (uint8_t*)nir->constant_data + nir->constant_data_size); - - /* the variable setup has to be done before lower_io / CSE */ - setup_variables(&ctx, nir); - - /* optimize and lower memory operations */ - bool lower_to_scalar = false; - bool lower_pack = false; - if (nir_opt_load_store_vectorize(nir, - (nir_variable_mode)(nir_var_mem_ssbo | nir_var_mem_ubo | - nir_var_mem_push_const | nir_var_mem_shared), - mem_vectorize_callback)) { - lower_to_scalar = true; - lower_pack = true; - } - if (nir->info.stage != MESA_SHADER_COMPUTE) - nir_lower_io(nir, (nir_variable_mode)(nir_var_shader_in | nir_var_shader_out), type_size, (nir_lower_io_options)0); - nir_lower_explicit_io(nir, nir_var_mem_global, nir_address_format_64bit_global); - - if (lower_to_scalar) - nir_lower_alu_to_scalar(nir, NULL, NULL); - if (lower_pack) - nir_lower_pack(nir); - - /* lower ALU operations */ - // TODO: implement logic64 in aco, it's more effective for sgprs - nir_lower_int64(nir, nir->options->lower_int64_options); - - nir_opt_idiv_const(nir, 32); - nir_lower_idiv(nir, nir_lower_idiv_precise); - - /* optimize the lowered ALU operations */ - bool more_algebraic = true; - while (more_algebraic) { - more_algebraic = false; - NIR_PASS_V(nir, nir_copy_prop); - NIR_PASS_V(nir, nir_opt_dce); - NIR_PASS_V(nir, nir_opt_constant_folding); - NIR_PASS(more_algebraic, nir, nir_opt_algebraic); - } + /* TODO: Check if we need to adjust min_waves for unknown workgroup sizes. */ + if (program->stage & (hw_vs | hw_fs)) { + /* PS and legacy VS have separate waves, no workgroups */ + program->workgroup_size = program->wave_size; + } else if (program->stage == compute_cs) { + /* CS sets the workgroup size explicitly */ + unsigned* bsize = program->info->cs.block_size; + program->workgroup_size = bsize[0] * bsize[1] * bsize[2]; + } else if ((program->stage & hw_es) || program->stage == geometry_gs) { + /* Unmerged ESGS operate in workgroups if on-chip GS (LDS rings) are enabled on GFX7-8 (not implemented in Mesa) */ + program->workgroup_size = program->wave_size; + } else if (program->stage & hw_gs) { + /* If on-chip GS (LDS rings) are enabled on GFX9 or later, merged GS operates in workgroups */ + assert(program->chip_class >= GFX9); + uint32_t es_verts_per_subgrp = G_028A44_ES_VERTS_PER_SUBGRP(program->info->gs_ring_info.vgt_gs_onchip_cntl); + uint32_t gs_instr_prims_in_subgrp = G_028A44_GS_INST_PRIMS_IN_SUBGRP(program->info->gs_ring_info.vgt_gs_onchip_cntl); + uint32_t workgroup_size = MAX2(es_verts_per_subgrp, gs_instr_prims_in_subgrp); + program->workgroup_size = MAX2(MIN2(workgroup_size, 256), 1); + } else if (program->stage == vertex_ls) { + /* Unmerged LS operates in workgroups */ + program->workgroup_size = UINT_MAX; /* TODO: probably tcs_num_patches * tcs_vertices_in, but those are not plumbed to ACO for LS */ + } else if (program->stage == tess_control_hs) { + /* Unmerged HS operates in workgroups, size is determined by the output vertices */ + setup_tcs_info(&ctx, shaders[0], NULL); + program->workgroup_size = ctx.tcs_num_patches * shaders[0]->info.tess.tcs_vertices_out; + } else if (program->stage == vertex_tess_control_hs) { + /* Merged LSHS operates in workgroups, but can still have a different number of LS and HS invocations */ + setup_tcs_info(&ctx, shaders[1], shaders[0]); + program->workgroup_size = ctx.tcs_num_patches * MAX2(shaders[1]->info.tess.tcs_vertices_out, ctx.args->options->key.tcs.input_vertices); + } else if (program->stage & hw_ngg_gs) { + /* TODO: Calculate workgroup size of NGG shaders. */ + program->workgroup_size = UINT_MAX; + } else { + unreachable("Unsupported shader stage."); + } - /* Do late algebraic optimization to turn add(a, neg(b)) back into - * subs, then the mandatory cleanup after algebraic. Note that it may - * produce fnegs, and if so then we need to keep running to squash - * fneg(fneg(a)). - */ - bool more_late_algebraic = true; - while (more_late_algebraic) { - more_late_algebraic = false; - NIR_PASS(more_late_algebraic, nir, nir_opt_algebraic_late); - NIR_PASS_V(nir, nir_opt_constant_folding); - NIR_PASS_V(nir, nir_copy_prop); - NIR_PASS_V(nir, nir_opt_dce); - NIR_PASS_V(nir, nir_opt_cse); - } + calc_min_waves(program); + program->vgpr_limit = get_addr_vgpr_from_waves(program, program->min_waves); + program->sgpr_limit = get_addr_sgpr_from_waves(program, program->min_waves); - /* cleanup passes */ - nir_lower_load_const_to_scalar(nir); - nir_opt_shrink_load(nir); - nir_move_options move_opts = (nir_move_options)( - nir_move_const_undef | nir_move_load_ubo | nir_move_load_input | nir_move_comparisons); - nir_opt_sink(nir, move_opts); - nir_opt_move(nir, move_opts); - nir_convert_to_lcssa(nir, true, false); - nir_lower_phis_to_scalar(nir); - - nir_function_impl *func = nir_shader_get_entrypoint(nir); - nir_index_ssa_defs(func); - nir_metadata_require(func, nir_metadata_block_index); - - if (args->options->dump_preoptir) { - fprintf(stderr, "NIR shader before instruction selection:\n"); - nir_print_shader(nir, stderr); + unsigned scratch_size = 0; + if (program->stage == gs_copy_vs) { + assert(shader_count == 1); + setup_vs_output_info(&ctx, shaders[0], false, true, &args->shader_info->vs.outinfo); + } else { + for (unsigned i = 0; i < shader_count; i++) { + nir_shader *nir = shaders[i]; + setup_nir(&ctx, nir); } + + for (unsigned i = 0; i < shader_count; i++) + scratch_size = std::max(scratch_size, shaders[i]->scratch_size); } - unsigned scratch_size = 0; - for (unsigned i = 0; i < shader_count; i++) - scratch_size = std::max(scratch_size, shaders[i]->scratch_size); ctx.program->config->scratch_bytes_per_wave = align(scratch_size * ctx.program->wave_size, 1024); ctx.block = ctx.program->create_and_insert_block(); ctx.block->loop_nest_depth = 0; ctx.block->kind = block_kind_top_level; + setup_xnack(program); + program->sram_ecc_enabled = args->options->family == CHIP_ARCTURUS; + /* apparently gfx702 also has fast v_fma_f32 but I can't find a family for that */ + program->has_fast_fma32 = program->chip_class >= GFX9; + if (args->options->family == CHIP_TAHITI || args->options->family == CHIP_CARRIZO || args->options->family == CHIP_HAWAII) + program->has_fast_fma32 = true; + return ctx; }