diff options
Diffstat (limited to 'absl/base/config.h')
| -rw-r--r-- | absl/base/config.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h index 78de4d1c..429dd353 100644 --- a/absl/base/config.h +++ b/absl/base/config.h @@ -269,6 +269,8 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #define ABSL_HAVE_SOURCE_LOCATION_CURRENT 1 #elif ABSL_INTERNAL_HAVE_MIN_GNUC_VERSION(5, 0) #define ABSL_HAVE_SOURCE_LOCATION_CURRENT 1 +#elif defined(_MSC_VER) && _MSC_VER >= 1926 +#define ABSL_HAVE_SOURCE_LOCATION_CURRENT 1 #endif #endif @@ -818,4 +820,34 @@ static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' || #define ABSL_INTERNAL_HAS_RTTI 1 #endif // !defined(__GNUC__) || defined(__GXX_RTTI) +// ABSL_INTERNAL_HAVE_SSE2 is used for compile-time detection of SSE2 support. +// See https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html for an overview of +// which architectures support the various x86 instruction sets. +#ifdef ABSL_INTERNAL_HAVE_SSE2 +#error ABSL_INTERNAL_HAVE_SSE2 cannot be directly set +#elif defined(__SSE2__) +#define ABSL_INTERNAL_HAVE_SSE2 1 +#elif defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2) +// MSVC only defines _M_IX86_FP for x86 32-bit code, and _M_IX86_FP >= 2 +// indicates that at least SSE2 was targeted with the /arch:SSE2 option. +// All x86-64 processors support SSE2, so support can be assumed. +// https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros +#define ABSL_INTERNAL_HAVE_SSE2 1 +#endif + +// ABSL_INTERNAL_HAVE_SSSE3 is used for compile-time detection of SSSE3 support. +// See https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html for an overview of +// which architectures support the various x86 instruction sets. +// +// MSVC does not have a mode that targets SSSE3 at compile-time. To use SSSE3 +// with MSVC requires either assuming that the code will only every run on CPUs +// that support SSSE3, otherwise __cpuid() can be used to detect support at +// runtime and fallback to a non-SSSE3 implementation when SSSE3 is unsupported +// by the CPU. +#ifdef ABSL_INTERNAL_HAVE_SSSE3 +#error ABSL_INTERNAL_HAVE_SSSE3 cannot be directly set +#elif defined(__SSSE3__) +#define ABSL_INTERNAL_HAVE_SSSE3 1 +#endif + #endif // ABSL_BASE_CONFIG_H_ |