diff options
author | Eric Anholt <eric@anholt.net> | 2010-06-24 15:32:15 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2010-06-24 15:36:00 -0700 |
commit | 29285882676388aacff123e8bdf025904abf8ea9 (patch) | |
tree | a830f72e7a5273d8fd1a7781ce7da7ae91b613ab /src/glsl/ir_function_inlining.cpp | |
parent | 0ee7d80269bfab14683623b0c8fc12da43db8d78 (diff) |
glsl2: Move the compiler to the subdirectory it will live in in Mesa.
Diffstat (limited to 'src/glsl/ir_function_inlining.cpp')
-rw-r--r-- | src/glsl/ir_function_inlining.cpp | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/src/glsl/ir_function_inlining.cpp b/src/glsl/ir_function_inlining.cpp new file mode 100644 index 00000000000..e55780c940e --- /dev/null +++ b/src/glsl/ir_function_inlining.cpp @@ -0,0 +1,272 @@ +/* + * 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. + */ + +#include <inttypes.h> +#include "ir.h" +#include "ir_visitor.h" +#include "ir_function_inlining.h" +#include "ir_expression_flattening.h" +#include "glsl_types.h" +#include "hash_table.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; +}; + + +unsigned int hash_func(const void *key) +{ + return (unsigned int)(uintptr_t)key; +} + +int hash_compare_func(const void *key1, const void *key2) +{ + return key1 == key2 ? 0 : 1; +} + +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; +} + +static void +replace_return_with_assignment(ir_instruction *ir, void *data) +{ + void *ctx = talloc_parent(ir); + ir_variable *retval = (ir_variable *)data; + ir_return *ret = ir->as_return(); + + if (ret) { + if (ret->value) { + ir_rvalue *lhs = new(ctx) ir_dereference_variable(retval); + ret->insert_before(new(ctx) ir_assignment(lhs, ret->value, NULL)); + ret->remove(); + } else { + /* un-valued return has to be the last return, or we shouldn't + * have reached here. (see can_inline()). + */ + assert(!ret->next->is_tail_sentinal()); + } + } +} + +ir_rvalue * +ir_call::generate_inline(ir_instruction *next_ir) +{ + void *ctx = talloc_parent(this); + ir_variable **parameters; + int num_parameters; + int i; + ir_variable *retval = NULL; + struct hash_table *ht; + + ht = hash_table_ctor(0, hash_func, hash_compare_func); + + 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(ctx) ir_variable(this->callee->return_type, "__retval"); + next_ir->insert_before(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] = (ir_variable *)sig_param->clone(ht); + parameters[i]->mode = ir_var_auto; + next_ir->insert_before(parameters[i]); + + /* Move the actual param into our param variable if it's an 'in' type. */ + if (sig_param->mode == ir_var_in || + sig_param->mode == ir_var_inout) { + ir_assignment *assign; + + assign = new(ctx) ir_assignment(new(ctx) 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_instruction *new_ir = ir->clone(ht); + + next_ir->insert_before(new_ir); + visit_tree(new_ir, replace_return_with_assignment, retval); + } + + /* 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(ctx) ir_assignment(param->as_rvalue(), + new(ctx) ir_dereference_variable(parameters[i]), + NULL); + next_ir->insert_before(assign); + } + + param_iter.next(); + } + + delete [] parameters; + + hash_table_dtor(ht); + + if (retval) + return new(ctx) 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; +} |