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author | Ed Schouten <ed@FreeBSD.org> | 2010-10-21 19:02:02 +0000 |
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committer | Ed Schouten <ed@FreeBSD.org> | 2010-10-21 19:02:02 +0000 |
commit | 217b614317dad692116a3a06fe94ea8f61a59edb (patch) | |
tree | 4cfe2eee875a959effca0881df14c079103447fa /lib/negvti2.c | |
download | src-217b614317dad692116a3a06fe94ea8f61a59edb.tar.gz src-217b614317dad692116a3a06fe94ea8f61a59edb.zip |
Import compiler-rt r117047.vendor/compiler-rt/compiler-rt-r117047
Notes
Notes:
svn path=/vendor/compiler-rt/dist/; revision=214152
svn path=/vendor/compiler-rt/compiler-rt-r117047/; revision=214153; tag=vendor/compiler-rt/compiler-rt-r117047
Diffstat (limited to 'lib/negvti2.c')
-rw-r--r-- | lib/negvti2.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/negvti2.c b/lib/negvti2.c new file mode 100644 index 000000000000..d56e1e32ade1 --- /dev/null +++ b/lib/negvti2.c @@ -0,0 +1,33 @@ +/*===-- negvti2.c - Implement __negvti2 -----------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is distributed under the University of Illinois Open Source + * License. See LICENSE.TXT for details. + * + *===----------------------------------------------------------------------=== + * + *This file implements __negvti2 for the compiler_rt library. + * + *===----------------------------------------------------------------------=== + */ + +#if __x86_64 + +#include "int_lib.h" +#include <stdlib.h> + +/* Returns: -a */ + +/* Effects: aborts if -a overflows */ + +ti_int +__negvti2(ti_int a) +{ + const ti_int MIN = (ti_int)1 << ((int)(sizeof(ti_int) * CHAR_BIT)-1); + if (a == MIN) + compilerrt_abort(); + return -a; +} + +#endif |