ir_builder.h revision 7e88f8ce8f9d72bbda248554e0630b4aca7e1154 
1/*
2 * Copyright © 2012 Intel Corporation
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 DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include "ir.h"
25
26namespace ir_builder {
27
28/**
29 * This little class exists to let the helper expression generators
30 * take either an ir_rvalue * or an ir_variable * to be automatically
31 * dereferenced, while still providing compile-time type checking.
32 *
33 * You don't have to explicitly call the constructor -- C++ will see
34 * that you passed an ir_variable, and silently call the
35 * operand(ir_variable *var) constructor behind your back.
36 */
37class operand {
38public:
39   operand(ir_rvalue *val)
40      : val(val)
41   {
42   }
43
44   operand(ir_variable *var)
45   {
46      void *mem_ctx = ralloc_parent(var);
47      val = new(mem_ctx) ir_dereference_variable(var);
48   }
49
50   ir_rvalue *val;
51};
52
53class ir_factory {
54public:
55   void emit(ir_instruction *ir);
56
57   exec_list *instructions;
58   void *mem_ctx;
59};
60
61ir_expression *expr(ir_expression_operation op, operand a, operand b);
62ir_expression *add(operand a, operand b);
63ir_expression *sub(operand a, operand b);
64ir_expression *mul(operand a, operand b);
65ir_expression *dot(operand a, operand b);
66ir_expression *saturate(operand a);
67
68ir_swizzle *swizzle_xxxx(operand a);
69ir_swizzle *swizzle_yyyy(operand a);
70ir_swizzle *swizzle_zzzz(operand a);
71ir_swizzle *swizzle_wwww(operand a);
72ir_swizzle *swizzle_x(operand a);
73ir_swizzle *swizzle_y(operand a);
74ir_swizzle *swizzle_z(operand a);
75ir_swizzle *swizzle_w(operand a);
76ir_swizzle *swizzle_xy(operand a);
77ir_swizzle *swizzle_xyz(operand a);
78ir_swizzle *swizzle_xyzw(operand a);
79
80} /* namespace ir_builder */
81