glsl2: Move the compiler to the subdirectory it will live in in Mesa.
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Eric Anholt
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0ee7d80269
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375 changed files with 0 additions and 0 deletions
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/*
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* Copyright © 2010 Intel Corporation
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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
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* DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file ir_function_inlining.cpp
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*
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* Replaces calls to functions with the body of the function.
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*/
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#include <inttypes.h>
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#include "ir.h"
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#include "ir_visitor.h"
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#include "ir_function_inlining.h"
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#include "ir_expression_flattening.h"
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#include "glsl_types.h"
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#include "hash_table.h"
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class ir_function_inlining_visitor : public ir_hierarchical_visitor {
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public:
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ir_function_inlining_visitor()
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{
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progress = false;
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}
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virtual ~ir_function_inlining_visitor()
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{
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/* empty */
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}
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virtual ir_visitor_status visit_enter(ir_expression *);
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virtual ir_visitor_status visit_enter(ir_call *);
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virtual ir_visitor_status visit_enter(ir_assignment *);
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virtual ir_visitor_status visit_enter(ir_return *);
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virtual ir_visitor_status visit_enter(ir_texture *);
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virtual ir_visitor_status visit_enter(ir_swizzle *);
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bool progress;
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};
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unsigned int hash_func(const void *key)
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{
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return (unsigned int)(uintptr_t)key;
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}
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int hash_compare_func(const void *key1, const void *key2)
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{
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return key1 == key2 ? 0 : 1;
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}
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bool
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automatic_inlining_predicate(ir_instruction *ir)
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{
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ir_call *call = ir->as_call();
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if (call && can_inline(call))
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return true;
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return false;
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}
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bool
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do_function_inlining(exec_list *instructions)
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{
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ir_function_inlining_visitor v;
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do_expression_flattening(instructions, automatic_inlining_predicate);
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v.run(instructions);
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return v.progress;
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}
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static void
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replace_return_with_assignment(ir_instruction *ir, void *data)
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{
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void *ctx = talloc_parent(ir);
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ir_variable *retval = (ir_variable *)data;
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ir_return *ret = ir->as_return();
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if (ret) {
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if (ret->value) {
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ir_rvalue *lhs = new(ctx) ir_dereference_variable(retval);
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ret->insert_before(new(ctx) ir_assignment(lhs, ret->value, NULL));
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ret->remove();
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} else {
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/* un-valued return has to be the last return, or we shouldn't
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* have reached here. (see can_inline()).
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*/
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assert(!ret->next->is_tail_sentinal());
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}
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}
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}
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ir_rvalue *
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ir_call::generate_inline(ir_instruction *next_ir)
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{
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void *ctx = talloc_parent(this);
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ir_variable **parameters;
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int num_parameters;
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int i;
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ir_variable *retval = NULL;
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struct hash_table *ht;
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ht = hash_table_ctor(0, hash_func, hash_compare_func);
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num_parameters = 0;
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foreach_iter(exec_list_iterator, iter_sig, this->callee->parameters)
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num_parameters++;
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parameters = new ir_variable *[num_parameters];
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/* Generate storage for the return value. */
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if (this->callee->return_type) {
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retval = new(ctx) ir_variable(this->callee->return_type, "__retval");
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next_ir->insert_before(retval);
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}
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/* Generate the declarations for the parameters to our inlined code,
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* and set up the mapping of real function body variables to ours.
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*/
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i = 0;
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exec_list_iterator sig_param_iter = this->callee->parameters.iterator();
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exec_list_iterator param_iter = this->actual_parameters.iterator();
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for (i = 0; i < num_parameters; i++) {
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const ir_variable *const sig_param = (ir_variable *) sig_param_iter.get();
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ir_rvalue *param = (ir_rvalue *) param_iter.get();
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/* Generate a new variable for the parameter. */
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parameters[i] = (ir_variable *)sig_param->clone(ht);
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parameters[i]->mode = ir_var_auto;
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next_ir->insert_before(parameters[i]);
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/* Move the actual param into our param variable if it's an 'in' type. */
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if (sig_param->mode == ir_var_in ||
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sig_param->mode == ir_var_inout) {
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ir_assignment *assign;
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assign = new(ctx) ir_assignment(new(ctx) ir_dereference_variable(parameters[i]),
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param, NULL);
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next_ir->insert_before(assign);
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}
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sig_param_iter.next();
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param_iter.next();
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}
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/* Generate the inlined body of the function. */
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foreach_iter(exec_list_iterator, iter, callee->body) {
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ir_instruction *ir = (ir_instruction *)iter.get();
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ir_instruction *new_ir = ir->clone(ht);
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next_ir->insert_before(new_ir);
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visit_tree(new_ir, replace_return_with_assignment, retval);
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}
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/* Copy back the value of any 'out' parameters from the function body
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* variables to our own.
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*/
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i = 0;
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param_iter = this->actual_parameters.iterator();
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for (i = 0; i < num_parameters; i++) {
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ir_instruction *const param = (ir_instruction *) param_iter.get();
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/* Move our param variable into the actual param if it's an 'out' type. */
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if (parameters[i]->mode == ir_var_out ||
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parameters[i]->mode == ir_var_inout) {
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ir_assignment *assign;
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assign = new(ctx) ir_assignment(param->as_rvalue(),
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new(ctx) ir_dereference_variable(parameters[i]),
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NULL);
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next_ir->insert_before(assign);
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}
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param_iter.next();
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}
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delete [] parameters;
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hash_table_dtor(ht);
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if (retval)
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return new(ctx) ir_dereference_variable(retval);
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else
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return NULL;
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}
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ir_visitor_status
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ir_function_inlining_visitor::visit_enter(ir_expression *ir)
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{
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(void) ir;
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return visit_continue_with_parent;
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}
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ir_visitor_status
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ir_function_inlining_visitor::visit_enter(ir_return *ir)
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{
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(void) ir;
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return visit_continue_with_parent;
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}
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ir_visitor_status
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ir_function_inlining_visitor::visit_enter(ir_texture *ir)
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{
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(void) ir;
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return visit_continue_with_parent;
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}
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ir_visitor_status
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ir_function_inlining_visitor::visit_enter(ir_swizzle *ir)
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{
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(void) ir;
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return visit_continue_with_parent;
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}
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ir_visitor_status
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ir_function_inlining_visitor::visit_enter(ir_call *ir)
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{
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if (can_inline(ir)) {
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(void) ir->generate_inline(ir);
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ir->remove();
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this->progress = true;
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}
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return visit_continue;
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}
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ir_visitor_status
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ir_function_inlining_visitor::visit_enter(ir_assignment *ir)
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{
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ir_call *call = ir->rhs->as_call();
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if (!call || !can_inline(call))
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return visit_continue;
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/* generates the parameter setup, function body, and returns the return
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* value of the function
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*/
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ir_rvalue *rhs = call->generate_inline(ir);
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assert(rhs);
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ir->rhs = rhs;
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this->progress = true;
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return visit_continue;
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}
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