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Merge llvm, clang, lld, lldb, compiler-rt and libc++ r303571, and update
[FreeBSD/FreeBSD.git] / contrib / compiler-rt / lib / builtins / bswapsi2.c
1 /* ===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------===
2  *
3  *               The LLVM Compiler Infrastructure
4  *
5  * This file is dual licensed under the MIT and the University of Illinois Open
6  * Source Licenses. See LICENSE.TXT for details.
7  *
8  * ===----------------------------------------------------------------------===
9  *
10  * This file implements __bswapsi2 for the compiler_rt library.
11  *
12  * ===----------------------------------------------------------------------===
13  */
14
15 #include "int_lib.h"
16
17 COMPILER_RT_ABI uint32_t
18 __bswapsi2 (uint32_t u)
19 {
20
21         return ((((u) & 0xff000000) >> 24)
22             | (((u) & 0x00ff0000) >>  8)
23             | (((u) & 0x0000ff00) <<  8)
24             | (((u) & 0x000000ff) << 24));
25 }