diff options
| author | dim <dim@FreeBSD.org> | 2015-01-08 19:47:10 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2015-01-08 19:47:10 +0000 |
| commit | ab328f15cea04a45750ef56019d2b3d971e033f3 (patch) | |
| tree | f47eabbd2a48be6d6fec3ddeeefae5b4aeb87dbc /contrib/compiler-rt/lib/builtins/subvsi3.c | |
| parent | 8189659be8e499f37c87fdd05ef5ec9f88619d56 (diff) | |
| parent | 2f1c5cc1039d86db0037cb086bd58f4b90dc6f66 (diff) | |
| download | FreeBSD-src-ab328f15cea04a45750ef56019d2b3d971e033f3.zip FreeBSD-src-ab328f15cea04a45750ef56019d2b3d971e033f3.tar.gz | |
Update compiler-rt to trunk r224034. This brings a number of new
builtins, and also the various sanitizers. Support for these will be
added in a later commit.
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/subvsi3.c')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/subvsi3.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/subvsi3.c b/contrib/compiler-rt/lib/builtins/subvsi3.c new file mode 100644 index 0000000..e6c0fb6 --- /dev/null +++ b/contrib/compiler-rt/lib/builtins/subvsi3.c @@ -0,0 +1,36 @@ +/* ===-- subvsi3.c - Implement __subvsi3 -----------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is dual licensed under the MIT and the University of Illinois Open + * Source Licenses. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __subvsi3 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" + +/* Returns: a - b */ + +/* Effects: aborts if a - b overflows */ + +COMPILER_RT_ABI si_int +__subvsi3(si_int a, si_int b) +{ + si_int s = (su_int) a - (su_int) b; + if (b >= 0) + { + if (s > a) + compilerrt_abort(); + } + else + { + if (s <= a) + compilerrt_abort(); + } + return s; +} |
