1 /*
2 * Copyright © 2019 Google, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 /**
25 * \file lower_builtins.cpp
26 *
27 * Inline calls to builtin functions.
28 */
29
30 #include "ir.h"
31 #include "ir_optimization.h"
32
33 namespace {
34
35 class lower_builtins_visitor : public ir_hierarchical_visitor {
36 public:
lower_builtins_visitor()37 lower_builtins_visitor() : progress(false) { }
38 ir_visitor_status visit_leave(ir_call *);
39 bool progress;
40 };
41
42 }
43
44 bool
lower_builtins(exec_list * instructions)45 lower_builtins(exec_list *instructions)
46 {
47 lower_builtins_visitor v;
48 visit_list_elements(&v, instructions);
49 return v.progress;
50 }
51
52 ir_visitor_status
visit_leave(ir_call * ir)53 lower_builtins_visitor::visit_leave(ir_call *ir)
54 {
55 /* lower_precision() also inlines some intrinsics, which can't be inlined
56 * further.
57 */
58 if (!ir->callee->is_builtin() || ir->callee->is_intrinsic())
59 return visit_continue;
60
61 ir->generate_inline(ir);
62 ir->remove();
63
64 this->progress = true;
65
66 return visit_continue;
67 }
68