diff options
Diffstat (limited to 'compiler-rt/lib/builtins/int_lib.h')
| -rw-r--r-- | compiler-rt/lib/builtins/int_lib.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/compiler-rt/lib/builtins/int_lib.h b/compiler-rt/lib/builtins/int_lib.h index 991c4a99ea6e..fb791ebc42eb 100644 --- a/compiler-rt/lib/builtins/int_lib.h +++ b/compiler-rt/lib/builtins/int_lib.h @@ -70,12 +70,21 @@ #error Unsupported target #endif -#if defined(__NetBSD__) && (defined(_KERNEL) || defined(_STANDALONE)) +#if (defined(__FreeBSD__) || defined(__NetBSD__)) && \ + (defined(_KERNEL) || defined(_STANDALONE)) // // Kernel and boot environment can't use normal headers, // so use the equivalent system headers. +// NB: FreeBSD (and OpenBSD) deprecate machine/limits.h in +// favour of sys/limits.h, so prefer the former, but fall +// back on the latter if not available since NetBSD only has +// the latter. // +#if defined(__has_include) && __has_include(<sys/limits.h>) +#include <sys/limits.h> +#else #include <machine/limits.h> +#endif #include <sys/stdint.h> #include <sys/types.h> #else @@ -144,6 +153,19 @@ int __inline __builtin_clzll(uint64_t value) { #endif #define __builtin_clzl __builtin_clzll + +bool __inline __builtin_sadd_overflow(int x, int y, int *result) { + if ((x < 0) != (y < 0)) { + *result = x + y; + return false; + } + int tmp = (unsigned int)x + (unsigned int)y; + if ((tmp < 0) != (x < 0)) + return true; + *result = tmp; + return false; +} + #endif // defined(_MSC_VER) && !defined(__clang__) #endif // INT_LIB_H |