2014-11-10 19:16:30 +00:00
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/*
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* Copyright © 2014-2015 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef NIR_BUILDER_H
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#define NIR_BUILDER_H
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struct exec_list;
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typedef struct nir_builder {
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struct exec_list *cf_node_list;
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2015-03-27 21:18:54 +00:00
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nir_instr *before_instr;
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2014-11-10 19:16:30 +00:00
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nir_shader *shader;
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nir_function_impl *impl;
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} nir_builder;
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static inline void
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nir_builder_init(nir_builder *build, nir_function_impl *impl)
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{
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memset(build, 0, sizeof(*build));
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build->impl = impl;
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build->shader = impl->overload->function->shader;
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}
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static inline void
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nir_builder_insert_after_cf_list(nir_builder *build,
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struct exec_list *cf_node_list)
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{
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build->cf_node_list = cf_node_list;
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}
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2015-03-27 21:18:54 +00:00
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static inline void
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nir_builder_insert_before_instr(nir_builder *build, nir_instr *before_instr)
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{
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build->before_instr = before_instr;
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}
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static inline void
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nir_builder_instr_insert(nir_builder *build, nir_instr *instr)
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{
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if (build->cf_node_list) {
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nir_instr_insert_after_cf_list(build->cf_node_list, instr);
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} else {
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assert(build->before_instr);
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nir_instr_insert_before(build->before_instr, instr);
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}
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}
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2015-03-25 09:11:52 +00:00
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static inline nir_ssa_def *
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nir_build_imm(nir_builder *build, unsigned num_components, nir_const_value value)
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{
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nir_load_const_instr *load_const =
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nir_load_const_instr_create(build->shader, num_components);
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if (!load_const)
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return NULL;
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load_const->value = value;
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2015-03-27 21:18:54 +00:00
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nir_builder_instr_insert(build, &load_const->instr);
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2015-03-25 09:11:52 +00:00
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return &load_const->def;
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}
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static inline nir_ssa_def *
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nir_imm_float(nir_builder *build, float x)
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{
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nir_const_value v = { { .f = {x, 0, 0, 0} } };
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return nir_build_imm(build, 1, v);
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}
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static inline nir_ssa_def *
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nir_imm_vec4(nir_builder *build, float x, float y, float z, float w)
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{
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nir_const_value v = { { .f = {x, y, z, w} } };
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return nir_build_imm(build, 4, v);
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}
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static inline nir_ssa_def *
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nir_imm_int(nir_builder *build, int x)
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{
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nir_const_value v = { { .i = {x, 0, 0, 0} } };
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return nir_build_imm(build, 1, v);
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}
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2014-11-10 19:16:30 +00:00
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static inline nir_ssa_def *
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nir_build_alu(nir_builder *build, nir_op op, nir_ssa_def *src0,
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nir_ssa_def *src1, nir_ssa_def *src2, nir_ssa_def *src3)
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{
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const nir_op_info *op_info = &nir_op_infos[op];
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nir_alu_instr *instr = nir_alu_instr_create(build->shader, op);
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if (!instr)
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return NULL;
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instr->src[0].src = nir_src_for_ssa(src0);
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if (src1)
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instr->src[1].src = nir_src_for_ssa(src1);
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if (src2)
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instr->src[2].src = nir_src_for_ssa(src2);
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if (src3)
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instr->src[3].src = nir_src_for_ssa(src3);
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/* Guess the number of components the destination temporary should have
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* based on our input sizes, if it's not fixed for the op.
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*/
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unsigned num_components = op_info->output_size;
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if (num_components == 0) {
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for (unsigned i = 0; i < op_info->num_inputs; i++) {
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if (op_info->input_sizes[i] == 0)
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num_components = MAX2(num_components,
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instr->src[i].src.ssa->num_components);
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}
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}
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assert(num_components != 0);
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/* Make sure we don't swizzle from outside of our source vector (like if a
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* scalar value was passed into a multiply with a vector).
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*/
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for (unsigned i = 0; i < op_info->num_inputs; i++) {
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for (unsigned j = instr->src[i].src.ssa->num_components; j < 4; j++) {
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instr->src[i].swizzle[j] = instr->src[i].src.ssa->num_components - 1;
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}
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}
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nir_ssa_dest_init(&instr->instr, &instr->dest.dest, num_components, NULL);
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instr->dest.write_mask = (1 << num_components) - 1;
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2015-03-27 21:18:54 +00:00
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nir_builder_instr_insert(build, &instr->instr);
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2014-11-10 19:16:30 +00:00
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return &instr->dest.dest.ssa;
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}
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#define ALU1(op) \
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static inline nir_ssa_def * \
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nir_##op(nir_builder *build, nir_ssa_def *src0) \
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{ \
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return nir_build_alu(build, nir_op_##op, src0, NULL, NULL, NULL); \
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}
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#define ALU2(op) \
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static inline nir_ssa_def * \
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nir_##op(nir_builder *build, nir_ssa_def *src0, nir_ssa_def *src1) \
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{ \
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return nir_build_alu(build, nir_op_##op, src0, src1, NULL, NULL); \
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}
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#define ALU3(op) \
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static inline nir_ssa_def * \
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nir_##op(nir_builder *build, nir_ssa_def *src0, \
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nir_ssa_def *src1, nir_ssa_def *src2) \
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{ \
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return nir_build_alu(build, nir_op_##op, src0, src1, src2, NULL); \
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}
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#define ALU4(op) \
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static inline nir_ssa_def * \
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nir_##op(nir_builder *build, nir_ssa_def *src0, \
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nir_ssa_def *src1, nir_ssa_def *src2, nir_ssa_def *src3) \
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{ \
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return nir_build_alu(build, nir_op_##op, src0, src1, src2, src3); \
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}
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#include "nir_builder_opcodes.h"
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2015-03-25 21:51:02 +00:00
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/**
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* Similar to nir_fmov, but takes a nir_alu_src instead of a nir_ssa_def.
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*/
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static inline nir_ssa_def *
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nir_fmov_alu(nir_builder *build, nir_alu_src src, unsigned num_components)
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{
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nir_alu_instr *mov = nir_alu_instr_create(build->shader, nir_op_fmov);
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nir_ssa_dest_init(&mov->instr, &mov->dest.dest, num_components, NULL);
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mov->dest.write_mask = (1 << num_components) - 1;
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mov->src[0] = src;
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2015-03-27 21:18:54 +00:00
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nir_builder_instr_insert(build, &mov->instr);
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2015-03-25 21:51:02 +00:00
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return &mov->dest.dest.ssa;
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}
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static inline nir_ssa_def *
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nir_imov_alu(nir_builder *build, nir_alu_src src, unsigned num_components)
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{
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nir_alu_instr *mov = nir_alu_instr_create(build->shader, nir_op_imov);
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nir_ssa_dest_init(&mov->instr, &mov->dest.dest, num_components, NULL);
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mov->dest.write_mask = (1 << num_components) - 1;
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mov->src[0] = src;
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2015-03-27 21:18:54 +00:00
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nir_builder_instr_insert(build, &mov->instr);
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2015-03-25 21:51:02 +00:00
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return &mov->dest.dest.ssa;
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}
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/**
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* Construct an fmov or imov that reswizzles the source's components.
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*/
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static inline nir_ssa_def *
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nir_swizzle(nir_builder *build, nir_ssa_def *src, unsigned swiz[4],
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unsigned num_components, bool use_fmov)
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{
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nir_alu_src alu_src;
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memset(&alu_src, 0, sizeof(alu_src));
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alu_src.src = nir_src_for_ssa(src);
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for (int i = 0; i < 4; i++)
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alu_src.swizzle[i] = swiz[i];
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return use_fmov ? nir_fmov_alu(build, alu_src, num_components) :
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nir_imov_alu(build, alu_src, num_components);
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}
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2014-11-10 19:16:30 +00:00
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#endif /* NIR_BUILDER_H */
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