1 | /* |
1 | /* |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | * Copyright (©) 2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * |
5 | * |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
7 | * the terms of the Affero GNU General Public License as published by the |
7 | * the terms of the Affero GNU General Public License as published by the |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
9 | * option) any later version. |
9 | * option) any later version. |
10 | * |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
14 | * GNU General Public License for more details. |
15 | * |
15 | * |
16 | * You should have received a copy of the Affero GNU General Public License |
16 | * You should have received a copy of the Affero GNU General Public License |
17 | * and the GNU General Public License along with this program. If not, see |
17 | * and the GNU General Public License along with this program. If not, see |
18 | * <http://www.gnu.org/licenses/>. |
18 | * <http://www.gnu.org/licenses/>. |
19 | * |
19 | * |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
21 | */ |
21 | */ |
22 | |
22 | |
23 | #ifndef COMPILER_H |
23 | #ifndef COMPILER_H |
24 | #define COMPILER_H |
24 | #define COMPILER_H |
… | |
… | |
29 | # define attribute(attrlist) __attribute__(attrlist) |
29 | # define attribute(attrlist) __attribute__(attrlist) |
30 | #else |
30 | #else |
31 | # define attribute(attrlist) |
31 | # define attribute(attrlist) |
32 | #endif |
32 | #endif |
33 | |
33 | |
34 | #if GCC_VERSION(3,0) |
34 | #if GCC_VERSION(3,1) |
35 | # define is_constant(c) __builtin_constant_p (c) |
35 | # define is_constant(c) __builtin_constant_p (c) |
36 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
36 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
37 | # define prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
37 | # define prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
38 | # define noinline __attribute__((__noinline__)) |
38 | # define noinline __attribute__((__noinline__)) |
39 | #else |
39 | #else |
… | |
… | |
41 | # define expect(expr,value) (expr) |
41 | # define expect(expr,value) (expr) |
42 | # define prefetch(addr,rw,locality) |
42 | # define prefetch(addr,rw,locality) |
43 | # define noinline |
43 | # define noinline |
44 | #endif |
44 | #endif |
45 | |
45 | |
|
|
46 | #if GCC_VERSION(4,5) |
|
|
47 | # define decltype(x) __decltype(x) |
46 | #if GCC_VERSION(3,0) |
48 | #elif GCC_VERSION(3,0) |
47 | # define decltype(x) typeof(x) |
49 | # define decltype(x) typeof(x) |
48 | #endif |
50 | #endif |
|
|
51 | |
|
|
52 | #define func_const attribute ((const)) |
|
|
53 | #define func_pure attribute ((pure)) |
|
|
54 | #define func_hot attribute ((hot)) // 4.x |
|
|
55 | #define func_cold attribute ((cold)) // 4.x |
49 | |
56 | |
50 | #if GCC_VERSION(4,5) |
57 | #if GCC_VERSION(4,5) |
51 | # define unreachable() __builtin_unreachable () |
58 | # define unreachable() __builtin_unreachable () |
52 | #else |
59 | #else |
53 | // this seems to work fine, but gcc always emits a warning for it :/ |
60 | // this seems to work fine, but gcc always emits a warning for it :/ |
… | |
… | |
59 | // is mostly true or mosty false. note that these return |
66 | // is mostly true or mosty false. note that these return |
60 | // booleans, not the expression. |
67 | // booleans, not the expression. |
61 | #define expect_false(expr) expect ((expr) ? 1 : 0, 0) |
68 | #define expect_false(expr) expect ((expr) ? 1 : 0, 0) |
62 | #define expect_true(expr) expect ((expr) ? 1 : 0, 1) |
69 | #define expect_true(expr) expect ((expr) ? 1 : 0, 1) |
63 | |
70 | |
64 | // try to tell the compiler tat some condition is definitely true |
71 | // try to tell the compiler that some condition is definitely true |
65 | #define assume(cond) do { if (!(cond)) unreachable (); } while (0) |
72 | #define assume(cond) do { if (!(cond)) unreachable (); } while (0) |
66 | |
73 | |
67 | #endif |
74 | #endif |
68 | |
75 | |