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Diffstat (limited to 'src/glsl/nir/nir.c')
| -rw-r--r-- | src/glsl/nir/nir.c | 1665 |
1 files changed, 0 insertions, 1665 deletions
diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c deleted file mode 100644 index 21bf678c04e..00000000000 --- a/src/glsl/nir/nir.c +++ /dev/null @@ -1,1665 +0,0 @@ -/* - * Copyright © 2014 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - * Authors: - * Connor Abbott ([email protected]) - * - */ - -#include "nir.h" -#include "nir_control_flow_private.h" -#include <assert.h> - -nir_shader * -nir_shader_create(void *mem_ctx, - gl_shader_stage stage, - const nir_shader_compiler_options *options) -{ - nir_shader *shader = ralloc(mem_ctx, nir_shader); - - exec_list_make_empty(&shader->uniforms); - exec_list_make_empty(&shader->inputs); - exec_list_make_empty(&shader->outputs); - - shader->options = options; - memset(&shader->info, 0, sizeof(shader->info)); - - exec_list_make_empty(&shader->functions); - exec_list_make_empty(&shader->registers); - exec_list_make_empty(&shader->globals); - exec_list_make_empty(&shader->system_values); - shader->reg_alloc = 0; - - shader->num_inputs = 0; - shader->num_outputs = 0; - shader->num_uniforms = 0; - - shader->stage = stage; - - return shader; -} - -static nir_register * -reg_create(void *mem_ctx, struct exec_list *list) -{ - nir_register *reg = ralloc(mem_ctx, nir_register); - - list_inithead(®->uses); - list_inithead(®->defs); - list_inithead(®->if_uses); - - reg->num_components = 0; - reg->num_array_elems = 0; - reg->is_packed = false; - reg->name = NULL; - - exec_list_push_tail(list, ®->node); - - return reg; -} - -nir_register * -nir_global_reg_create(nir_shader *shader) -{ - nir_register *reg = reg_create(shader, &shader->registers); - reg->index = shader->reg_alloc++; - reg->is_global = true; - - return reg; -} - -nir_register * -nir_local_reg_create(nir_function_impl *impl) -{ - nir_register *reg = reg_create(ralloc_parent(impl), &impl->registers); - reg->index = impl->reg_alloc++; - reg->is_global = false; - - return reg; -} - -void -nir_reg_remove(nir_register *reg) -{ - exec_node_remove(®->node); -} - -void -nir_shader_add_variable(nir_shader *shader, nir_variable *var) -{ - switch (var->data.mode) { - case nir_var_all: - assert(!"invalid mode"); - break; - - case nir_var_local: - assert(!"nir_shader_add_variable cannot be used for local variables"); - break; - - case nir_var_global: - exec_list_push_tail(&shader->globals, &var->node); - break; - - case nir_var_shader_in: - exec_list_push_tail(&shader->inputs, &var->node); - break; - - case nir_var_shader_out: - exec_list_push_tail(&shader->outputs, &var->node); - break; - - case nir_var_uniform: - case nir_var_shader_storage: - exec_list_push_tail(&shader->uniforms, &var->node); - break; - - case nir_var_system_value: - exec_list_push_tail(&shader->system_values, &var->node); - break; - } -} - -nir_variable * -nir_variable_create(nir_shader *shader, nir_variable_mode mode, - const struct glsl_type *type, const char *name) -{ - nir_variable *var = rzalloc(shader, nir_variable); - var->name = ralloc_strdup(var, name); - var->type = type; - var->data.mode = mode; - - if ((mode == nir_var_shader_in && shader->stage != MESA_SHADER_VERTEX) || - (mode == nir_var_shader_out && shader->stage != MESA_SHADER_FRAGMENT)) - var->data.interpolation = INTERP_QUALIFIER_SMOOTH; - - if (mode == nir_var_shader_in || mode == nir_var_uniform) - var->data.read_only = true; - - nir_shader_add_variable(shader, var); - - return var; -} - -nir_variable * -nir_local_variable_create(nir_function_impl *impl, - const struct glsl_type *type, const char *name) -{ - nir_variable *var = rzalloc(impl->function->shader, nir_variable); - var->name = ralloc_strdup(var, name); - var->type = type; - var->data.mode = nir_var_local; - - nir_function_impl_add_variable(impl, var); - - return var; -} - -nir_function * -nir_function_create(nir_shader *shader, const char *name) -{ - nir_function *func = ralloc(shader, nir_function); - - exec_list_push_tail(&shader->functions, &func->node); - - func->name = ralloc_strdup(func, name); - func->shader = shader; - func->num_params = 0; - func->params = NULL; - func->return_type = glsl_void_type(); - func->impl = NULL; - - return func; -} - -void nir_src_copy(nir_src *dest, const nir_src *src, void *mem_ctx) -{ - dest->is_ssa = src->is_ssa; - if (src->is_ssa) { - dest->ssa = src->ssa; - } else { - dest->reg.base_offset = src->reg.base_offset; - dest->reg.reg = src->reg.reg; - if (src->reg.indirect) { - dest->reg.indirect = ralloc(mem_ctx, nir_src); - nir_src_copy(dest->reg.indirect, src->reg.indirect, mem_ctx); - } else { - dest->reg.indirect = NULL; - } - } -} - -void nir_dest_copy(nir_dest *dest, const nir_dest *src, nir_instr *instr) -{ - /* Copying an SSA definition makes no sense whatsoever. */ - assert(!src->is_ssa); - - dest->is_ssa = false; - - dest->reg.base_offset = src->reg.base_offset; - dest->reg.reg = src->reg.reg; - if (src->reg.indirect) { - dest->reg.indirect = ralloc(instr, nir_src); - nir_src_copy(dest->reg.indirect, src->reg.indirect, instr); - } else { - dest->reg.indirect = NULL; - } -} - -void -nir_alu_src_copy(nir_alu_src *dest, const nir_alu_src *src, - nir_alu_instr *instr) -{ - nir_src_copy(&dest->src, &src->src, &instr->instr); - dest->abs = src->abs; - dest->negate = src->negate; - for (unsigned i = 0; i < 4; i++) - dest->swizzle[i] = src->swizzle[i]; -} - -void -nir_alu_dest_copy(nir_alu_dest *dest, const nir_alu_dest *src, - nir_alu_instr *instr) -{ - nir_dest_copy(&dest->dest, &src->dest, &instr->instr); - dest->write_mask = src->write_mask; - dest->saturate = src->saturate; -} - - -static void -cf_init(nir_cf_node *node, nir_cf_node_type type) -{ - exec_node_init(&node->node); - node->parent = NULL; - node->type = type; -} - -nir_function_impl * -nir_function_impl_create(nir_function *function) -{ - assert(function->impl == NULL); - - void *mem_ctx = ralloc_parent(function); - - nir_function_impl *impl = ralloc(mem_ctx, nir_function_impl); - - function->impl = impl; - impl->function = function; - - cf_init(&impl->cf_node, nir_cf_node_function); - - exec_list_make_empty(&impl->body); - exec_list_make_empty(&impl->registers); - exec_list_make_empty(&impl->locals); - impl->num_params = 0; - impl->params = NULL; - impl->return_var = NULL; - impl->reg_alloc = 0; - impl->ssa_alloc = 0; - impl->valid_metadata = nir_metadata_none; - - /* create start & end blocks */ - nir_block *start_block = nir_block_create(mem_ctx); - nir_block *end_block = nir_block_create(mem_ctx); - start_block->cf_node.parent = &impl->cf_node; - end_block->cf_node.parent = &impl->cf_node; - impl->end_block = end_block; - - exec_list_push_tail(&impl->body, &start_block->cf_node.node); - - start_block->successors[0] = end_block; - _mesa_set_add(end_block->predecessors, start_block); - return impl; -} - -nir_block * -nir_block_create(nir_shader *shader) -{ - nir_block *block = ralloc(shader, nir_block); - - cf_init(&block->cf_node, nir_cf_node_block); - - block->successors[0] = block->successors[1] = NULL; - block->predecessors = _mesa_set_create(block, _mesa_hash_pointer, - _mesa_key_pointer_equal); - block->imm_dom = NULL; - /* XXX maybe it would be worth it to defer allocation? This - * way it doesn't get allocated for shader ref's that never run - * nir_calc_dominance? For example, state-tracker creates an - * initial IR, clones that, runs appropriate lowering pass, passes - * to driver which does common lowering/opt, and then stores ref - * which is later used to do state specific lowering and futher - * opt. Do any of the references not need dominance metadata? - */ - block->dom_frontier = _mesa_set_create(block, _mesa_hash_pointer, - _mesa_key_pointer_equal); - - exec_list_make_empty(&block->instr_list); - - return block; -} - -static inline void -src_init(nir_src *src) -{ - src->is_ssa = false; - src->reg.reg = NULL; - src->reg.indirect = NULL; - src->reg.base_offset = 0; -} - -nir_if * -nir_if_create(nir_shader *shader) -{ - nir_if *if_stmt = ralloc(shader, nir_if); - - cf_init(&if_stmt->cf_node, nir_cf_node_if); - src_init(&if_stmt->condition); - - nir_block *then = nir_block_create(shader); - exec_list_make_empty(&if_stmt->then_list); - exec_list_push_tail(&if_stmt->then_list, &then->cf_node.node); - then->cf_node.parent = &if_stmt->cf_node; - - nir_block *else_stmt = nir_block_create(shader); - exec_list_make_empty(&if_stmt->else_list); - exec_list_push_tail(&if_stmt->else_list, &else_stmt->cf_node.node); - else_stmt->cf_node.parent = &if_stmt->cf_node; - - return if_stmt; -} - -nir_loop * -nir_loop_create(nir_shader *shader) -{ - nir_loop *loop = ralloc(shader, nir_loop); - - cf_init(&loop->cf_node, nir_cf_node_loop); - - nir_block *body = nir_block_create(shader); - exec_list_make_empty(&loop->body); - exec_list_push_tail(&loop->body, &body->cf_node.node); - body->cf_node.parent = &loop->cf_node; - - body->successors[0] = body; - _mesa_set_add(body->predecessors, body); - - return loop; -} - -static void -instr_init(nir_instr *instr, nir_instr_type type) -{ - instr->type = type; - instr->block = NULL; - exec_node_init(&instr->node); -} - -static void -dest_init(nir_dest *dest) -{ - dest->is_ssa = false; - dest->reg.reg = NULL; - dest->reg.indirect = NULL; - dest->reg.base_offset = 0; -} - -static void -alu_dest_init(nir_alu_dest *dest) -{ - dest_init(&dest->dest); - dest->saturate = false; - dest->write_mask = 0xf; -} - -static void -alu_src_init(nir_alu_src *src) -{ - src_init(&src->src); - src->abs = src->negate = false; - src->swizzle[0] = 0; - src->swizzle[1] = 1; - src->swizzle[2] = 2; - src->swizzle[3] = 3; -} - -nir_alu_instr * -nir_alu_instr_create(nir_shader *shader, nir_op op) -{ - unsigned num_srcs = nir_op_infos[op].num_inputs; - nir_alu_instr *instr = - ralloc_size(shader, - sizeof(nir_alu_instr) + num_srcs * sizeof(nir_alu_src)); - - instr_init(&instr->instr, nir_instr_type_alu); - instr->op = op; - alu_dest_init(&instr->dest); - for (unsigned i = 0; i < num_srcs; i++) - alu_src_init(&instr->src[i]); - - return instr; -} - -nir_jump_instr * -nir_jump_instr_create(nir_shader *shader, nir_jump_type type) -{ - nir_jump_instr *instr = ralloc(shader, nir_jump_instr); - instr_init(&instr->instr, nir_instr_type_jump); - instr->type = type; - return instr; -} - -nir_load_const_instr * -nir_load_const_instr_create(nir_shader *shader, unsigned num_components) -{ - nir_load_const_instr *instr = ralloc(shader, nir_load_const_instr); - instr_init(&instr->instr, nir_instr_type_load_const); - - nir_ssa_def_init(&instr->instr, &instr->def, num_components, NULL); - - return instr; -} - -nir_intrinsic_instr * -nir_intrinsic_instr_create(nir_shader *shader, nir_intrinsic_op op) -{ - unsigned num_srcs = nir_intrinsic_infos[op].num_srcs; - nir_intrinsic_instr *instr = - ralloc_size(shader, - sizeof(nir_intrinsic_instr) + num_srcs * sizeof(nir_src)); - - instr_init(&instr->instr, nir_instr_type_intrinsic); - instr->intrinsic = op; - - if (nir_intrinsic_infos[op].has_dest) - dest_init(&instr->dest); - - for (unsigned i = 0; i < num_srcs; i++) - src_init(&instr->src[i]); - - return instr; -} - -nir_call_instr * -nir_call_instr_create(nir_shader *shader, nir_function *callee) -{ - nir_call_instr *instr = ralloc(shader, nir_call_instr); - instr_init(&instr->instr, nir_instr_type_call); - - instr->callee = callee; - instr->num_params = callee->num_params; - instr->params = ralloc_array(instr, nir_deref_var *, instr->num_params); - instr->return_deref = NULL; - - return instr; -} - -nir_tex_instr * -nir_tex_instr_create(nir_shader *shader, unsigned num_srcs) -{ - nir_tex_instr *instr = rzalloc(shader, nir_tex_instr); - instr_init(&instr->instr, nir_instr_type_tex); - - dest_init(&instr->dest); - - instr->num_srcs = num_srcs; - instr->src = ralloc_array(instr, nir_tex_src, num_srcs); - for (unsigned i = 0; i < num_srcs; i++) - src_init(&instr->src[i].src); - - instr->sampler_index = 0; - instr->sampler_array_size = 0; - instr->sampler = NULL; - - return instr; -} - -nir_phi_instr * -nir_phi_instr_create(nir_shader *shader) -{ - nir_phi_instr *instr = ralloc(shader, nir_phi_instr); - instr_init(&instr->instr, nir_instr_type_phi); - - dest_init(&instr->dest); - exec_list_make_empty(&instr->srcs); - return instr; -} - -nir_parallel_copy_instr * -nir_parallel_copy_instr_create(nir_shader *shader) -{ - nir_parallel_copy_instr *instr = ralloc(shader, nir_parallel_copy_instr); - instr_init(&instr->instr, nir_instr_type_parallel_copy); - - exec_list_make_empty(&instr->entries); - - return instr; -} - -nir_ssa_undef_instr * -nir_ssa_undef_instr_create(nir_shader *shader, unsigned num_components) -{ - nir_ssa_undef_instr *instr = ralloc(shader, nir_ssa_undef_instr); - instr_init(&instr->instr, nir_instr_type_ssa_undef); - - nir_ssa_def_init(&instr->instr, &instr->def, num_components, NULL); - - return instr; -} - -nir_deref_var * -nir_deref_var_create(void *mem_ctx, nir_variable *var) -{ - nir_deref_var *deref = ralloc(mem_ctx, nir_deref_var); - deref->deref.deref_type = nir_deref_type_var; - deref->deref.child = NULL; - deref->deref.type = var->type; - deref->var = var; - return deref; -} - -nir_deref_array * -nir_deref_array_create(void *mem_ctx) -{ - nir_deref_array *deref = ralloc(mem_ctx, nir_deref_array); - deref->deref.deref_type = nir_deref_type_array; - deref->deref.child = NULL; - deref->deref_array_type = nir_deref_array_type_direct; - src_init(&deref->indirect); - deref->base_offset = 0; - return deref; -} - -nir_deref_struct * -nir_deref_struct_create(void *mem_ctx, unsigned field_index) -{ - nir_deref_struct *deref = ralloc(mem_ctx, nir_deref_struct); - deref->deref.deref_type = nir_deref_type_struct; - deref->deref.child = NULL; - deref->index = field_index; - return deref; -} - -static nir_deref_var * -copy_deref_var(void *mem_ctx, nir_deref_var *deref) -{ - nir_deref_var *ret = nir_deref_var_create(mem_ctx, deref->var); - ret->deref.type = deref->deref.type; - if (deref->deref.child) - ret->deref.child = nir_copy_deref(ret, deref->deref.child); - return ret; -} - -static nir_deref_array * -copy_deref_array(void *mem_ctx, nir_deref_array *deref) -{ - nir_deref_array *ret = nir_deref_array_create(mem_ctx); - ret->base_offset = deref->base_offset; - ret->deref_array_type = deref->deref_array_type; - if (deref->deref_array_type == nir_deref_array_type_indirect) { - nir_src_copy(&ret->indirect, &deref->indirect, mem_ctx); - } - ret->deref.type = deref->deref.type; - if (deref->deref.child) - ret->deref.child = nir_copy_deref(ret, deref->deref.child); - return ret; -} - -static nir_deref_struct * -copy_deref_struct(void *mem_ctx, nir_deref_struct *deref) -{ - nir_deref_struct *ret = nir_deref_struct_create(mem_ctx, deref->index); - ret->deref.type = deref->deref.type; - if (deref->deref.child) - ret->deref.child = nir_copy_deref(ret, deref->deref.child); - return ret; -} - -nir_deref * -nir_copy_deref(void *mem_ctx, nir_deref *deref) -{ - switch (deref->deref_type) { - case nir_deref_type_var: - return ©_deref_var(mem_ctx, nir_deref_as_var(deref))->deref; - case nir_deref_type_array: - return ©_deref_array(mem_ctx, nir_deref_as_array(deref))->deref; - case nir_deref_type_struct: - return ©_deref_struct(mem_ctx, nir_deref_as_struct(deref))->deref; - default: - unreachable("Invalid dereference type"); - } - - return NULL; -} - -/* Returns a load_const instruction that represents the constant - * initializer for the given deref chain. The caller is responsible for - * ensuring that there actually is a constant initializer. - */ -nir_load_const_instr * -nir_deref_get_const_initializer_load(nir_shader *shader, nir_deref_var *deref) -{ - nir_constant *constant = deref->var->constant_initializer; - assert(constant); - - const nir_deref *tail = &deref->deref; - unsigned matrix_offset = 0; - while (tail->child) { - switch (tail->child->deref_type) { - case nir_deref_type_array: { - nir_deref_array *arr = nir_deref_as_array(tail->child); - assert(arr->deref_array_type == nir_deref_array_type_direct); - if (glsl_type_is_matrix(tail->type)) { - assert(arr->deref.child == NULL); - matrix_offset = arr->base_offset; - } else { - constant = constant->elements[arr->base_offset]; - } - break; - } - - case nir_deref_type_struct: { - constant = constant->elements[nir_deref_as_struct(tail->child)->index]; - break; - } - - default: - unreachable("Invalid deref child type"); - } - - tail = tail->child; - } - - nir_load_const_instr *load = - nir_load_const_instr_create(shader, glsl_get_vector_elements(tail->type)); - - matrix_offset *= load->def.num_components; - for (unsigned i = 0; i < load->def.num_components; i++) { - switch (glsl_get_base_type(tail->type)) { - case GLSL_TYPE_FLOAT: - case GLSL_TYPE_INT: - case GLSL_TYPE_UINT: - load->value.u[i] = constant->value.u[matrix_offset + i]; - break; - case GLSL_TYPE_BOOL: - load->value.u[i] = constant->value.b[matrix_offset + i] ? - NIR_TRUE : NIR_FALSE; - break; - default: - unreachable("Invalid immediate type"); - } - } - - return load; -} - -nir_function_impl * -nir_cf_node_get_function(nir_cf_node *node) -{ - while (node->type != nir_cf_node_function) { - node = node->parent; - } - - return nir_cf_node_as_function(node); -} - -static bool -add_use_cb(nir_src *src, void *state) -{ - nir_instr *instr = state; - - src->parent_instr = instr; - list_addtail(&src->use_link, - src->is_ssa ? &src->ssa->uses : &src->reg.reg->uses); - - return true; -} - -static bool -add_ssa_def_cb(nir_ssa_def *def, void *state) -{ - nir_instr *instr = state; - - if (instr->block && def->index == UINT_MAX) { - nir_function_impl *impl = - nir_cf_node_get_function(&instr->block->cf_node); - - def->index = impl->ssa_alloc++; - } - - return true; -} - -static bool -add_reg_def_cb(nir_dest *dest, void *state) -{ - nir_instr *instr = state; - - if (!dest->is_ssa) { - dest->reg.parent_instr = instr; - list_addtail(&dest->reg.def_link, &dest->reg.reg->defs); - } - - return true; -} - -static void -add_defs_uses(nir_instr *instr) -{ - nir_foreach_src(instr, add_use_cb, instr); - nir_foreach_dest(instr, add_reg_def_cb, instr); - nir_foreach_ssa_def(instr, add_ssa_def_cb, instr); -} - -void -nir_instr_insert(nir_cursor cursor, nir_instr *instr) -{ - switch (cursor.option) { - case nir_cursor_before_block: - /* Only allow inserting jumps into empty blocks. */ - if (instr->type == nir_instr_type_jump) - assert(exec_list_is_empty(&cursor.block->instr_list)); - - instr->block = cursor.block; - add_defs_uses(instr); - exec_list_push_head(&cursor.block->instr_list, &instr->node); - break; - case nir_cursor_after_block: { - /* Inserting instructions after a jump is illegal. */ - nir_instr *last = nir_block_last_instr(cursor.block); - assert(last == NULL || last->type != nir_instr_type_jump); - (void) last; - - instr->block = cursor.block; - add_defs_uses(instr); - exec_list_push_tail(&cursor.block->instr_list, &instr->node); - break; - } - case nir_cursor_before_instr: - assert(instr->type != nir_instr_type_jump); - instr->block = cursor.instr->block; - add_defs_uses(instr); - exec_node_insert_node_before(&cursor.instr->node, &instr->node); - break; - case nir_cursor_after_instr: - /* Inserting instructions after a jump is illegal. */ - assert(cursor.instr->type != nir_instr_type_jump); - - /* Only allow inserting jumps at the end of the block. */ - if (instr->type == nir_instr_type_jump) - assert(cursor.instr == nir_block_last_instr(cursor.instr->block)); - - instr->block = cursor.instr->block; - add_defs_uses(instr); - exec_node_insert_after(&cursor.instr->node, &instr->node); - break; - } - - if (instr->type == nir_instr_type_jump) - nir_handle_add_jump(instr->block); -} - -static bool -src_is_valid(const nir_src *src) -{ - return src->is_ssa ? (src->ssa != NULL) : (src->reg.reg != NULL); -} - -static bool -remove_use_cb(nir_src *src, void *state) -{ - if (src_is_valid(src)) - list_del(&src->use_link); - - return true; -} - -static bool -remove_def_cb(nir_dest *dest, void *state) -{ - if (!dest->is_ssa) - list_del(&dest->reg.def_link); - - return true; -} - -static void -remove_defs_uses(nir_instr *instr) -{ - nir_foreach_dest(instr, remove_def_cb, instr); - nir_foreach_src(instr, remove_use_cb, instr); -} - -void nir_instr_remove(nir_instr *instr) -{ - remove_defs_uses(instr); - exec_node_remove(&instr->node); - - if (instr->type == nir_instr_type_jump) { - nir_jump_instr *jump_instr = nir_instr_as_jump(instr); - nir_handle_remove_jump(instr->block, jump_instr->type); - } -} - -/*@}*/ - -void -nir_index_local_regs(nir_function_impl *impl) -{ - unsigned index = 0; - foreach_list_typed(nir_register, reg, node, &impl->registers) { - reg->index = index++; - } - impl->reg_alloc = index; -} - -void -nir_index_global_regs(nir_shader *shader) -{ - unsigned index = 0; - foreach_list_typed(nir_register, reg, node, &shader->registers) { - reg->index = index++; - } - shader->reg_alloc = index; -} - -static bool -visit_alu_dest(nir_alu_instr *instr, nir_foreach_dest_cb cb, void *state) -{ - return cb(&instr->dest.dest, state); -} - -static bool -visit_intrinsic_dest(nir_intrinsic_instr *instr, nir_foreach_dest_cb cb, - void *state) -{ - if (nir_intrinsic_infos[instr->intrinsic].has_dest) - return cb(&instr->dest, state); - - return true; -} - -static bool -visit_texture_dest(nir_tex_instr *instr, nir_foreach_dest_cb cb, - void *state) -{ - return cb(&instr->dest, state); -} - -static bool -visit_phi_dest(nir_phi_instr *instr, nir_foreach_dest_cb cb, void *state) -{ - return cb(&instr->dest, state); -} - -static bool -visit_parallel_copy_dest(nir_parallel_copy_instr *instr, - nir_foreach_dest_cb cb, void *state) -{ - nir_foreach_parallel_copy_entry(instr, entry) { - if (!cb(&entry->dest, state)) - return false; - } - - return true; -} - -bool -nir_foreach_dest(nir_instr *instr, nir_foreach_dest_cb cb, void *state) -{ - switch (instr->type) { - case nir_instr_type_alu: - return visit_alu_dest(nir_instr_as_alu(instr), cb, state); - case nir_instr_type_intrinsic: - return visit_intrinsic_dest(nir_instr_as_intrinsic(instr), cb, state); - case nir_instr_type_tex: - return visit_texture_dest(nir_instr_as_tex(instr), cb, state); - case nir_instr_type_phi: - return visit_phi_dest(nir_instr_as_phi(instr), cb, state); - case nir_instr_type_parallel_copy: - return visit_parallel_copy_dest(nir_instr_as_parallel_copy(instr), - cb, state); - - case nir_instr_type_load_const: - case nir_instr_type_ssa_undef: - case nir_instr_type_call: - case nir_instr_type_jump: - break; - - default: - unreachable("Invalid instruction type"); - break; - } - - return true; -} - -struct foreach_ssa_def_state { - nir_foreach_ssa_def_cb cb; - void *client_state; -}; - -static inline bool -nir_ssa_def_visitor(nir_dest *dest, void *void_state) -{ - struct foreach_ssa_def_state *state = void_state; - - if (dest->is_ssa) - return state->cb(&dest->ssa, state->client_state); - else - return true; -} - -bool -nir_foreach_ssa_def(nir_instr *instr, nir_foreach_ssa_def_cb cb, void *state) -{ - switch (instr->type) { - case nir_instr_type_alu: - case nir_instr_type_tex: - case nir_instr_type_intrinsic: - case nir_instr_type_phi: - case nir_instr_type_parallel_copy: { - struct foreach_ssa_def_state foreach_state = {cb, state}; - return nir_foreach_dest(instr, nir_ssa_def_visitor, &foreach_state); - } - - case nir_instr_type_load_const: - return cb(&nir_instr_as_load_const(instr)->def, state); - case nir_instr_type_ssa_undef: - return cb(&nir_instr_as_ssa_undef(instr)->def, state); - case nir_instr_type_call: - case nir_instr_type_jump: - return true; - default: - unreachable("Invalid instruction type"); - } -} - -static bool -visit_src(nir_src *src, nir_foreach_src_cb cb, void *state) -{ - if (!cb(src, state)) - return false; - if (!src->is_ssa && src->reg.indirect) - return cb(src->reg.indirect, state); - return true; -} - -static bool -visit_deref_array_src(nir_deref_array *deref, nir_foreach_src_cb cb, - void *state) -{ - if (deref->deref_array_type == nir_deref_array_type_indirect) - return visit_src(&deref->indirect, cb, state); - return true; -} - -static bool -visit_deref_src(nir_deref_var *deref, nir_foreach_src_cb cb, void *state) -{ - nir_deref *cur = &deref->deref; - while (cur != NULL) { - if (cur->deref_type == nir_deref_type_array) - if (!visit_deref_array_src(nir_deref_as_array(cur), cb, state)) - return false; - - cur = cur->child; - } - - return true; -} - -static bool -visit_alu_src(nir_alu_instr *instr, nir_foreach_src_cb cb, void *state) -{ - for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++) - if (!visit_src(&instr->src[i].src, cb, state)) - return false; - - return true; -} - -static bool -visit_tex_src(nir_tex_instr *instr, nir_foreach_src_cb cb, void *state) -{ - for (unsigned i = 0; i < instr->num_srcs; i++) - if (!visit_src(&instr->src[i].src, cb, state)) - return false; - - if (instr->sampler != NULL) - if (!visit_deref_src(instr->sampler, cb, state)) - return false; - - return true; -} - -static bool -visit_intrinsic_src(nir_intrinsic_instr *instr, nir_foreach_src_cb cb, - void *state) -{ - unsigned num_srcs = nir_intrinsic_infos[instr->intrinsic].num_srcs; - for (unsigned i = 0; i < num_srcs; i++) - if (!visit_src(&instr->src[i], cb, state)) - return false; - - unsigned num_vars = - nir_intrinsic_infos[instr->intrinsic].num_variables; - for (unsigned i = 0; i < num_vars; i++) - if (!visit_deref_src(instr->variables[i], cb, state)) - return false; - - return true; -} - -static bool -visit_call_src(nir_call_instr *instr, nir_foreach_src_cb cb, void *state) -{ - return true; -} - -static bool -visit_load_const_src(nir_load_const_instr *instr, nir_foreach_src_cb cb, - void *state) -{ - return true; -} - -static bool -visit_phi_src(nir_phi_instr *instr, nir_foreach_src_cb cb, void *state) -{ - nir_foreach_phi_src(instr, src) { - if (!visit_src(&src->src, cb, state)) - return false; - } - - return true; -} - -static bool -visit_parallel_copy_src(nir_parallel_copy_instr *instr, - nir_foreach_src_cb cb, void *state) -{ - nir_foreach_parallel_copy_entry(instr, entry) { - if (!visit_src(&entry->src, cb, state)) - return false; - } - - return true; -} - -typedef struct { - void *state; - nir_foreach_src_cb cb; -} visit_dest_indirect_state; - -static bool -visit_dest_indirect(nir_dest *dest, void *_state) -{ - visit_dest_indirect_state *state = (visit_dest_indirect_state *) _state; - - if (!dest->is_ssa && dest->reg.indirect) - return state->cb(dest->reg.indirect, state->state); - - return true; -} - -bool -nir_foreach_src(nir_instr *instr, nir_foreach_src_cb cb, void *state) -{ - switch (instr->type) { - case nir_instr_type_alu: - if (!visit_alu_src(nir_instr_as_alu(instr), cb, state)) - return false; - break; - case nir_instr_type_intrinsic: - if (!visit_intrinsic_src(nir_instr_as_intrinsic(instr), cb, state)) - return false; - break; - case nir_instr_type_tex: - if (!visit_tex_src(nir_instr_as_tex(instr), cb, state)) - return false; - break; - case nir_instr_type_call: - if (!visit_call_src(nir_instr_as_call(instr), cb, state)) - return false; - break; - case nir_instr_type_load_const: - if (!visit_load_const_src(nir_instr_as_load_const(instr), cb, state)) - return false; - break; - case nir_instr_type_phi: - if (!visit_phi_src(nir_instr_as_phi(instr), cb, state)) - return false; - break; - case nir_instr_type_parallel_copy: - if (!visit_parallel_copy_src(nir_instr_as_parallel_copy(instr), - cb, state)) - return false; - break; - case nir_instr_type_jump: - case nir_instr_type_ssa_undef: - return true; - - default: - unreachable("Invalid instruction type"); - break; - } - - visit_dest_indirect_state dest_state; - dest_state.state = state; - dest_state.cb = cb; - return nir_foreach_dest(instr, visit_dest_indirect, &dest_state); -} - -nir_const_value * -nir_src_as_const_value(nir_src src) -{ - if (!src.is_ssa) - return NULL; - - if (src.ssa->parent_instr->type != nir_instr_type_load_const) - return NULL; - - nir_load_const_instr *load = nir_instr_as_load_const(src.ssa->parent_instr); - - return &load->value; -} - -/** - * Returns true if the source is known to be dynamically uniform. Otherwise it - * returns false which means it may or may not be dynamically uniform but it - * can't be determined. - */ -bool -nir_src_is_dynamically_uniform(nir_src src) -{ - if (!src.is_ssa) - return false; - - /* Constants are trivially dynamically uniform */ - if (src.ssa->parent_instr->type == nir_instr_type_load_const) - return true; - - /* As are uniform variables */ - if (src.ssa->parent_instr->type == nir_instr_type_intrinsic) { - nir_intrinsic_instr *intr = nir_instr_as_intrinsic(src.ssa->parent_instr); - - if (intr->intrinsic == nir_intrinsic_load_uniform) - return true; - } - - /* XXX: this could have many more tests, such as when a sampler function is - * called with dynamically uniform arguments. - */ - return false; -} - -static void -src_remove_all_uses(nir_src *src) -{ - for (; src; src = src->is_ssa ? NULL : src->reg.indirect) { - if (!src_is_valid(src)) - continue; - - list_del(&src->use_link); - } -} - -static void -src_add_all_uses(nir_src *src, nir_instr *parent_instr, nir_if *parent_if) -{ - for (; src; src = src->is_ssa ? NULL : src->reg.indirect) { - if (!src_is_valid(src)) - continue; - - if (parent_instr) { - src->parent_instr = parent_instr; - if (src->is_ssa) - list_addtail(&src->use_link, &src->ssa->uses); - else - list_addtail(&src->use_link, &src->reg.reg->uses); - } else { - assert(parent_if); - src->parent_if = parent_if; - if (src->is_ssa) - list_addtail(&src->use_link, &src->ssa->if_uses); - else - list_addtail(&src->use_link, &src->reg.reg->if_uses); - } - } -} - -void -nir_instr_rewrite_src(nir_instr *instr, nir_src *src, nir_src new_src) -{ - assert(!src_is_valid(src) || src->parent_instr == instr); - - src_remove_all_uses(src); - *src = new_src; - src_add_all_uses(src, instr, NULL); -} - -void -nir_instr_move_src(nir_instr *dest_instr, nir_src *dest, nir_src *src) -{ - assert(!src_is_valid(dest) || dest->parent_instr == dest_instr); - - src_remove_all_uses(dest); - src_remove_all_uses(src); - *dest = *src; - *src = NIR_SRC_INIT; - src_add_all_uses(dest, dest_instr, NULL); -} - -void -nir_if_rewrite_condition(nir_if *if_stmt, nir_src new_src) -{ - nir_src *src = &if_stmt->condition; - assert(!src_is_valid(src) || src->parent_if == if_stmt); - - src_remove_all_uses(src); - *src = new_src; - src_add_all_uses(src, NULL, if_stmt); -} - -void -nir_instr_rewrite_dest(nir_instr *instr, nir_dest *dest, nir_dest new_dest) -{ - if (dest->is_ssa) { - /* We can only overwrite an SSA destination if it has no uses. */ - assert(list_empty(&dest->ssa.uses) && list_empty(&dest->ssa.if_uses)); - } else { - list_del(&dest->reg.def_link); - if (dest->reg.indirect) - src_remove_all_uses(dest->reg.indirect); - } - - /* We can't re-write with an SSA def */ - assert(!new_dest.is_ssa); - - nir_dest_copy(dest, &new_dest, instr); - - dest->reg.parent_instr = instr; - list_addtail(&dest->reg.def_link, &new_dest.reg.reg->defs); - - if (dest->reg.indirect) - src_add_all_uses(dest->reg.indirect, instr, NULL); -} - -void -nir_ssa_def_init(nir_instr *instr, nir_ssa_def *def, - unsigned num_components, const char *name) -{ - def->name = name; - def->parent_instr = instr; - list_inithead(&def->uses); - list_inithead(&def->if_uses); - def->num_components = num_components; - - if (instr->block) { - nir_function_impl *impl = - nir_cf_node_get_function(&instr->block->cf_node); - - def->index = impl->ssa_alloc++; - } else { - def->index = UINT_MAX; - } -} - -void -nir_ssa_dest_init(nir_instr *instr, nir_dest *dest, - unsigned num_components, const char *name) -{ - dest->is_ssa = true; - nir_ssa_def_init(instr, &dest->ssa, num_components, name); -} - -void -nir_ssa_def_rewrite_uses(nir_ssa_def *def, nir_src new_src) -{ - assert(!new_src.is_ssa || def != new_src.ssa); - - nir_foreach_use_safe(def, use_src) - nir_instr_rewrite_src(use_src->parent_instr, use_src, new_src); - - nir_foreach_if_use_safe(def, use_src) - nir_if_rewrite_condition(use_src->parent_if, new_src); -} - -static bool -is_instr_between(nir_instr *start, nir_instr *end, nir_instr *between) -{ - assert(start->block == end->block); - - if (between->block != start->block) - return false; - - /* Search backwards looking for "between" */ - while (start != end) { - if (between == end) - return true; - - end = nir_instr_prev(end); - assert(end); - } - - return false; -} - -/* Replaces all uses of the given SSA def with the given source but only if - * the use comes after the after_me instruction. This can be useful if you - * are emitting code to fix up the result of some instruction: you can freely - * use the result in that code and then call rewrite_uses_after and pass the - * last fixup instruction as after_me and it will replace all of the uses you - * want without touching the fixup code. - * - * This function assumes that after_me is in the same block as - * def->parent_instr and that after_me comes after def->parent_instr. - */ -void -nir_ssa_def_rewrite_uses_after(nir_ssa_def *def, nir_src new_src, - nir_instr *after_me) -{ - assert(!new_src.is_ssa || def != new_src.ssa); - - nir_foreach_use_safe(def, use_src) { - assert(use_src->parent_instr != def->parent_instr); - /* Since def already dominates all of its uses, the only way a use can - * not be dominated by after_me is if it is between def and after_me in - * the instruction list. - */ - if (!is_instr_between(def->parent_instr, after_me, use_src->parent_instr)) - nir_instr_rewrite_src(use_src->parent_instr, use_src, new_src); - } - - nir_foreach_if_use_safe(def, use_src) - nir_if_rewrite_condition(use_src->parent_if, new_src); -} - -static bool foreach_cf_node(nir_cf_node *node, nir_foreach_block_cb cb, - bool reverse, void *state); - -static inline bool -foreach_if(nir_if *if_stmt, nir_foreach_block_cb cb, bool reverse, void *state) -{ - if (reverse) { - foreach_list_typed_reverse_safe(nir_cf_node, node, node, - &if_stmt->else_list) { - if (!foreach_cf_node(node, cb, reverse, state)) - return false; - } - - foreach_list_typed_reverse_safe(nir_cf_node, node, node, - &if_stmt->then_list) { - if (!foreach_cf_node(node, cb, reverse, state)) - return false; - } - } else { - foreach_list_typed_safe(nir_cf_node, node, node, &if_stmt->then_list) { - if (!foreach_cf_node(node, cb, reverse, state)) - return false; - } - - foreach_list_typed_safe(nir_cf_node, node, node, &if_stmt->else_list) { - if (!foreach_cf_node(node, cb, reverse, state)) - return false; - } - } - - return true; -} - -static inline bool -foreach_loop(nir_loop *loop, nir_foreach_block_cb cb, bool reverse, void *state) -{ - if (reverse) { - foreach_list_typed_reverse_safe(nir_cf_node, node, node, &loop->body) { - if (!foreach_cf_node(node, cb, reverse, state)) - return false; - } - } else { - foreach_list_typed_safe(nir_cf_node, node, node, &loop->body) { - if (!foreach_cf_node(node, cb, reverse, state)) - return false; - } - } - - return true; -} - -static bool -foreach_cf_node(nir_cf_node *node, nir_foreach_block_cb cb, - bool reverse, void *state) -{ - switch (node->type) { - case nir_cf_node_block: - return cb(nir_cf_node_as_block(node), state); - case nir_cf_node_if: - return foreach_if(nir_cf_node_as_if(node), cb, reverse, state); - case nir_cf_node_loop: - return foreach_loop(nir_cf_node_as_loop(node), cb, reverse, state); - break; - - default: - unreachable("Invalid CFG node type"); - break; - } - - return false; -} - -bool -nir_foreach_block_in_cf_node(nir_cf_node *node, nir_foreach_block_cb cb, - void *state) -{ - return foreach_cf_node(node, cb, false, state); -} - -bool -nir_foreach_block(nir_function_impl *impl, nir_foreach_block_cb cb, void *state) -{ - foreach_list_typed_safe(nir_cf_node, node, node, &impl->body) { - if (!foreach_cf_node(node, cb, false, state)) - return false; - } - - return cb(impl->end_block, state); -} - -bool -nir_foreach_block_reverse(nir_function_impl *impl, nir_foreach_block_cb cb, - void *state) -{ - if (!cb(impl->end_block, state)) - return false; - - foreach_list_typed_reverse_safe(nir_cf_node, node, node, &impl->body) { - if (!foreach_cf_node(node, cb, true, state)) - return false; - } - - return true; -} - -nir_if * -nir_block_get_following_if(nir_block *block) -{ - if (exec_node_is_tail_sentinel(&block->cf_node.node)) - return NULL; - - if (nir_cf_node_is_last(&block->cf_node)) - return NULL; - - nir_cf_node *next_node = nir_cf_node_next(&block->cf_node); - - if (next_node->type != nir_cf_node_if) - return NULL; - - return nir_cf_node_as_if(next_node); -} - -nir_loop * -nir_block_get_following_loop(nir_block *block) -{ - if (exec_node_is_tail_sentinel(&block->cf_node.node)) - return NULL; - - if (nir_cf_node_is_last(&block->cf_node)) - return NULL; - - nir_cf_node *next_node = nir_cf_node_next(&block->cf_node); - - if (next_node->type != nir_cf_node_loop) - return NULL; - - return nir_cf_node_as_loop(next_node); -} -static bool -index_block(nir_block *block, void *state) -{ - unsigned *index = state; - block->index = (*index)++; - return true; -} - -void -nir_index_blocks(nir_function_impl *impl) -{ - unsigned index = 0; - - if (impl->valid_metadata & nir_metadata_block_index) - return; - - nir_foreach_block(impl, index_block, &index); - - impl->num_blocks = index; -} - -static bool -index_ssa_def_cb(nir_ssa_def *def, void *state) -{ - unsigned *index = (unsigned *) state; - def->index = (*index)++; - - return true; -} - -static bool -index_ssa_block(nir_block *block, void *state) -{ - nir_foreach_instr(block, instr) - nir_foreach_ssa_def(instr, index_ssa_def_cb, state); - - return true; -} - -/** - * The indices are applied top-to-bottom which has the very nice property - * that, if A dominates B, then A->index <= B->index. - */ -void -nir_index_ssa_defs(nir_function_impl *impl) -{ - unsigned index = 0; - nir_foreach_block(impl, index_ssa_block, &index); - impl->ssa_alloc = index; -} - -static bool -index_instrs_block(nir_block *block, void *state) -{ - unsigned *index = state; - nir_foreach_instr(block, instr) - instr->index = (*index)++; - - return true; -} - -/** - * The indices are applied top-to-bottom which has the very nice property - * that, if A dominates B, then A->index <= B->index. - */ -unsigned -nir_index_instrs(nir_function_impl *impl) -{ - unsigned index = 0; - nir_foreach_block(impl, index_instrs_block, &index); - return index; -} - -nir_intrinsic_op -nir_intrinsic_from_system_value(gl_system_value val) -{ - switch (val) { - case SYSTEM_VALUE_VERTEX_ID: - return nir_intrinsic_load_vertex_id; - case SYSTEM_VALUE_INSTANCE_ID: - return nir_intrinsic_load_instance_id; - case SYSTEM_VALUE_DRAW_ID: - return nir_intrinsic_load_draw_id; - case SYSTEM_VALUE_BASE_INSTANCE: - return nir_intrinsic_load_base_instance; - case SYSTEM_VALUE_VERTEX_ID_ZERO_BASE: - return nir_intrinsic_load_vertex_id_zero_base; - case SYSTEM_VALUE_BASE_VERTEX: - return nir_intrinsic_load_base_vertex; - case SYSTEM_VALUE_INVOCATION_ID: - return nir_intrinsic_load_invocation_id; - case SYSTEM_VALUE_FRONT_FACE: - return nir_intrinsic_load_front_face; - case SYSTEM_VALUE_SAMPLE_ID: - return nir_intrinsic_load_sample_id; - case SYSTEM_VALUE_SAMPLE_POS: - return nir_intrinsic_load_sample_pos; - case SYSTEM_VALUE_SAMPLE_MASK_IN: - return nir_intrinsic_load_sample_mask_in; - case SYSTEM_VALUE_LOCAL_INVOCATION_ID: - return nir_intrinsic_load_local_invocation_id; - case SYSTEM_VALUE_WORK_GROUP_ID: - return nir_intrinsic_load_work_group_id; - case SYSTEM_VALUE_NUM_WORK_GROUPS: - return nir_intrinsic_load_num_work_groups; - case SYSTEM_VALUE_PRIMITIVE_ID: - return nir_intrinsic_load_primitive_id; - case SYSTEM_VALUE_TESS_COORD: - return nir_intrinsic_load_tess_coord; - case SYSTEM_VALUE_TESS_LEVEL_OUTER: - return nir_intrinsic_load_tess_level_outer; - case SYSTEM_VALUE_TESS_LEVEL_INNER: - return nir_intrinsic_load_tess_level_inner; - case SYSTEM_VALUE_VERTICES_IN: - return nir_intrinsic_load_patch_vertices_in; - case SYSTEM_VALUE_HELPER_INVOCATION: - return nir_intrinsic_load_helper_invocation; - default: - unreachable("system value does not directly correspond to intrinsic"); - } -} - -gl_system_value -nir_system_value_from_intrinsic(nir_intrinsic_op intrin) -{ - switch (intrin) { - case nir_intrinsic_load_vertex_id: - return SYSTEM_VALUE_VERTEX_ID; - case nir_intrinsic_load_instance_id: - return SYSTEM_VALUE_INSTANCE_ID; - case nir_intrinsic_load_draw_id: - return SYSTEM_VALUE_DRAW_ID; - case nir_intrinsic_load_base_instance: - return SYSTEM_VALUE_BASE_INSTANCE; - case nir_intrinsic_load_vertex_id_zero_base: - return SYSTEM_VALUE_VERTEX_ID_ZERO_BASE; - case nir_intrinsic_load_base_vertex: - return SYSTEM_VALUE_BASE_VERTEX; - case nir_intrinsic_load_invocation_id: - return SYSTEM_VALUE_INVOCATION_ID; - case nir_intrinsic_load_front_face: - return SYSTEM_VALUE_FRONT_FACE; - case nir_intrinsic_load_sample_id: - return SYSTEM_VALUE_SAMPLE_ID; - case nir_intrinsic_load_sample_pos: - return SYSTEM_VALUE_SAMPLE_POS; - case nir_intrinsic_load_sample_mask_in: - return SYSTEM_VALUE_SAMPLE_MASK_IN; - case nir_intrinsic_load_local_invocation_id: - return SYSTEM_VALUE_LOCAL_INVOCATION_ID; - case nir_intrinsic_load_num_work_groups: - return SYSTEM_VALUE_NUM_WORK_GROUPS; - case nir_intrinsic_load_work_group_id: - return SYSTEM_VALUE_WORK_GROUP_ID; - case nir_intrinsic_load_primitive_id: - return SYSTEM_VALUE_PRIMITIVE_ID; - case nir_intrinsic_load_tess_coord: - return SYSTEM_VALUE_TESS_COORD; - case nir_intrinsic_load_tess_level_outer: - return SYSTEM_VALUE_TESS_LEVEL_OUTER; - case nir_intrinsic_load_tess_level_inner: - return SYSTEM_VALUE_TESS_LEVEL_INNER; - case nir_intrinsic_load_patch_vertices_in: - return SYSTEM_VALUE_VERTICES_IN; - case nir_intrinsic_load_helper_invocation: - return SYSTEM_VALUE_HELPER_INVOCATION; - default: - unreachable("intrinsic doesn't produce a system value"); - } -} |