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Diffstat (limited to 'ir_function_inlining.cpp')
| -rw-r--r-- | ir_function_inlining.cpp | 515 |
1 files changed, 515 insertions, 0 deletions
diff --git a/ir_function_inlining.cpp b/ir_function_inlining.cpp new file mode 100644 index 0000000000..a501c813fb --- /dev/null +++ b/ir_function_inlining.cpp @@ -0,0 +1,515 @@ +/* + * Copyright © 2010 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. + */ + +/** + * \file ir_function_inlining.cpp + * + * Replaces calls to functions with the body of the function. + */ + +#define NULL 0 +#include "ir.h" +#include "ir_visitor.h" +#include "ir_function_inlining.h" +#include "ir_expression_flattening.h" +#include "glsl_types.h" + +class ir_function_inlining_visitor : public ir_hierarchical_visitor { +public: + ir_function_inlining_visitor() + { + progress = false; + } + + virtual ~ir_function_inlining_visitor() + { + /* empty */ + } + + virtual ir_visitor_status visit_enter(ir_expression *); + virtual ir_visitor_status visit_enter(ir_call *); + virtual ir_visitor_status visit_enter(ir_assignment *); + virtual ir_visitor_status visit_enter(ir_return *); + virtual ir_visitor_status visit_enter(ir_texture *); + virtual ir_visitor_status visit_enter(ir_swizzle *); + + bool progress; +}; + +class variable_remap : public exec_node { +public: + variable_remap(const ir_variable *old_var, ir_variable *new_var) + : old_var(old_var), new_var(new_var) + { + /* empty */ + } + const ir_variable *old_var; + ir_variable *new_var; +}; + +class ir_function_cloning_visitor : public ir_visitor { +public: + ir_function_cloning_visitor(ir_variable *retval) + : retval(retval) + { + /* empty */ + } + + virtual ~ir_function_cloning_visitor() + { + /* empty */ + } + + void remap_variable(const ir_variable *old_var, ir_variable *new_var) { + variable_remap *remap = new variable_remap(old_var, new_var); + this->remap_list.push_tail(remap); + } + + ir_variable *get_remapped_variable(ir_variable *var) { + foreach_iter(exec_list_iterator, iter, this->remap_list) { + variable_remap *remap = (variable_remap *)iter.get(); + + if (var == remap->old_var) + return remap->new_var; + } + + /* Not a reapped variable, so a global scoped reference, for example. */ + return var; + } + + /* List of variable_remap for mapping from original function body variables + * to inlined function body variables. + */ + exec_list remap_list; + + /* Return value for the inlined function. */ + ir_variable *retval; + + /** + * \name Visit methods + * + * As typical for the visitor pattern, there must be one \c visit method for + * each concrete subclass of \c ir_instruction. Virtual base classes within + * the hierarchy should not have \c visit methods. + */ + /*@{*/ + virtual void visit(ir_variable *); + virtual void visit(ir_loop *); + virtual void visit(ir_loop_jump *); + virtual void visit(ir_function_signature *); + virtual void visit(ir_function *); + virtual void visit(ir_expression *); + virtual void visit(ir_texture *); + virtual void visit(ir_swizzle *); + virtual void visit(ir_dereference_variable *); + virtual void visit(ir_dereference_array *); + virtual void visit(ir_dereference_record *); + virtual void visit(ir_assignment *); + virtual void visit(ir_constant *); + virtual void visit(ir_call *); + virtual void visit(ir_return *); + virtual void visit(ir_if *); + /*@}*/ + + ir_instruction *result; +}; + +void +ir_function_cloning_visitor::visit(ir_variable *ir) +{ + ir_variable *new_var = ir->clone(); + + this->result = new_var; + + this->remap_variable(ir, new_var); +} + +void +ir_function_cloning_visitor::visit(ir_loop *ir) +{ + /* FINISHME: Implement loop cloning. */ + assert(0); + + (void)ir; + this->result = NULL; +} + +void +ir_function_cloning_visitor::visit(ir_loop_jump *ir) +{ + /* FINISHME: Implement loop cloning. */ + assert(0); + + (void) ir; + this->result = NULL; +} + + +void +ir_function_cloning_visitor::visit(ir_function_signature *ir) +{ + assert(0); + (void)ir; + this->result = NULL; +} + + +void +ir_function_cloning_visitor::visit(ir_function *ir) +{ + assert(0); + (void) ir; + this->result = NULL; +} + +void +ir_function_cloning_visitor::visit(ir_expression *ir) +{ + unsigned int operand; + ir_rvalue *op[2] = {NULL, NULL}; + + for (operand = 0; operand < ir->get_num_operands(); operand++) { + ir->operands[operand]->accept(this); + op[operand] = this->result->as_rvalue(); + assert(op[operand]); + } + + this->result = new ir_expression(ir->operation, ir->type, op[0], op[1]); +} + + +void +ir_function_cloning_visitor::visit(ir_texture *ir) +{ + ir_texture *tex = new ir_texture(ir->op); + + ir->sampler->accept(this); + tex->set_sampler(this->result->as_dereference()); + + ir->coordinate->accept(this); + tex->coordinate = this->result->as_rvalue(); + + if (ir->projector != NULL) { + ir->projector->accept(this); + tex->projector = this->result->as_rvalue(); + } + + if (ir->shadow_comparitor != NULL) { + ir->shadow_comparitor->accept(this); + tex->shadow_comparitor = this->result->as_rvalue(); + } + + for (int i = 0; i < 3; i++) + tex->offsets[i] = ir->offsets[i]; + + tex->lod_info = ir->lod_info; +} + + +void +ir_function_cloning_visitor::visit(ir_swizzle *ir) +{ + ir->val->accept(this); + + this->result = new ir_swizzle(this->result->as_rvalue(), ir->mask); +} + +void +ir_function_cloning_visitor::visit(ir_dereference_variable *ir) +{ + ir_variable *var = this->get_remapped_variable(ir->variable_referenced()); + this->result = new ir_dereference_variable(var); +} + +void +ir_function_cloning_visitor::visit(ir_dereference_array *ir) +{ + ir->array->accept(this); + + ir_rvalue *var = this->result->as_rvalue(); + + ir->array_index->accept(this); + + ir_rvalue *index = this->result->as_rvalue(); + + this->result = new ir_dereference_array(var, index); +} + +void +ir_function_cloning_visitor::visit(ir_dereference_record *ir) +{ + ir->record->accept(this); + + ir_rvalue *var = this->result->as_rvalue(); + + this->result = new ir_dereference_record(var, strdup(ir->field)); +} + +void +ir_function_cloning_visitor::visit(ir_assignment *ir) +{ + ir_rvalue *lhs, *rhs, *condition = NULL; + + ir->lhs->accept(this); + lhs = this->result->as_rvalue(); + + ir->rhs->accept(this); + rhs = this->result->as_rvalue(); + + if (ir->condition) { + ir->condition->accept(this); + condition = this->result->as_rvalue(); + } + + this->result = new ir_assignment(lhs, rhs, condition); +} + + +void +ir_function_cloning_visitor::visit(ir_constant *ir) +{ + this->result = ir->clone(); +} + + +void +ir_function_cloning_visitor::visit(ir_call *ir) +{ + exec_list parameters; + + foreach_iter(exec_list_iterator, iter, *ir) { + ir_rvalue *param = (ir_rvalue *)iter.get(); + + param->accept(this); + parameters.push_tail(this->result); + } + + this->result = new ir_call(ir->get_callee(), ¶meters); +} + + +void +ir_function_cloning_visitor::visit(ir_return *ir) +{ + ir_rvalue *rval; + + assert(this->retval); + + rval = ir->get_value(); + rval->accept(this); + rval = this->result->as_rvalue(); + assert(rval); + + result = new ir_assignment(new ir_dereference_variable(this->retval), rval, + NULL); +} + + +void +ir_function_cloning_visitor::visit(ir_if *ir) +{ + /* FINISHME: Implement if cloning. */ + assert(0); + + (void) ir; + result = NULL; +} + +bool +automatic_inlining_predicate(ir_instruction *ir) +{ + ir_call *call = ir->as_call(); + + if (call && can_inline(call)) + return true; + + return false; +} + +bool +do_function_inlining(exec_list *instructions) +{ + ir_function_inlining_visitor v; + + do_expression_flattening(instructions, automatic_inlining_predicate); + + v.run(instructions); + + return v.progress; +} + +ir_rvalue * +ir_call::generate_inline(ir_instruction *next_ir) +{ + ir_variable **parameters; + int num_parameters; + int i; + ir_variable *retval = NULL; + + num_parameters = 0; + foreach_iter(exec_list_iterator, iter_sig, this->callee->parameters) + num_parameters++; + + parameters = new ir_variable *[num_parameters]; + + /* Generate storage for the return value. */ + if (this->callee->return_type) { + retval = new ir_variable(this->callee->return_type, "__retval"); + next_ir->insert_before(retval); + } + + ir_function_cloning_visitor v = ir_function_cloning_visitor(retval); + + /* Generate the declarations for the parameters to our inlined code, + * and set up the mapping of real function body variables to ours. + */ + i = 0; + exec_list_iterator sig_param_iter = this->callee->parameters.iterator(); + exec_list_iterator param_iter = this->actual_parameters.iterator(); + for (i = 0; i < num_parameters; i++) { + const ir_variable *const sig_param = (ir_variable *) sig_param_iter.get(); + ir_rvalue *param = (ir_rvalue *) param_iter.get(); + + /* Generate a new variable for the parameter. */ + parameters[i] = sig_param->clone(); + next_ir->insert_before(parameters[i]); + + v.remap_variable(sig_param, parameters[i]); + + /* Move the actual param into our param variable if it's an 'in' type. */ + if (parameters[i]->mode == ir_var_in || + parameters[i]->mode == ir_var_inout) { + ir_assignment *assign; + + assign = new ir_assignment(new ir_dereference_variable(parameters[i]), + param, NULL); + next_ir->insert_before(assign); + } + + sig_param_iter.next(); + param_iter.next(); + } + + /* Generate the inlined body of the function. */ + foreach_iter(exec_list_iterator, iter, callee->body) { + ir_instruction *ir = (ir_instruction *)iter.get(); + + ir->accept(&v); + assert(v.result); + next_ir->insert_before(v.result); + } + + /* Copy back the value of any 'out' parameters from the function body + * variables to our own. + */ + i = 0; + param_iter = this->actual_parameters.iterator(); + for (i = 0; i < num_parameters; i++) { + ir_instruction *const param = (ir_instruction *) param_iter.get(); + + /* Move our param variable into the actual param if it's an 'out' type. */ + if (parameters[i]->mode == ir_var_out || + parameters[i]->mode == ir_var_inout) { + ir_assignment *assign; + + assign = new ir_assignment(param->as_rvalue(), + new ir_dereference_variable(parameters[i]), + NULL); + next_ir->insert_before(assign); + } + + param_iter.next(); + } + + delete [] parameters; + + if (retval) + return new ir_dereference_variable(retval); + else + return NULL; +} + + +ir_visitor_status +ir_function_inlining_visitor::visit_enter(ir_expression *ir) +{ + (void) ir; + return visit_continue_with_parent; +} + + +ir_visitor_status +ir_function_inlining_visitor::visit_enter(ir_return *ir) +{ + (void) ir; + return visit_continue_with_parent; +} + + +ir_visitor_status +ir_function_inlining_visitor::visit_enter(ir_texture *ir) +{ + (void) ir; + return visit_continue_with_parent; +} + + +ir_visitor_status +ir_function_inlining_visitor::visit_enter(ir_swizzle *ir) +{ + (void) ir; + return visit_continue_with_parent; +} + + +ir_visitor_status +ir_function_inlining_visitor::visit_enter(ir_call *ir) +{ + if (can_inline(ir)) { + (void) ir->generate_inline(ir); + ir->remove(); + this->progress = true; + } + + return visit_continue; +} + + +ir_visitor_status +ir_function_inlining_visitor::visit_enter(ir_assignment *ir) +{ + ir_call *call = ir->rhs->as_call(); + if (!call || !can_inline(call)) + return visit_continue; + + /* generates the parameter setup, function body, and returns the return + * value of the function + */ + ir_rvalue *rhs = call->generate_inline(ir); + assert(rhs); + + ir->rhs = rhs; + this->progress = true; + + return visit_continue; +} |