diff options
| -rw-r--r-- | clang/lib/Headers/f16cintrin.h | 72 |
1 files changed, 69 insertions, 3 deletions
diff --git a/clang/lib/Headers/f16cintrin.h b/clang/lib/Headers/f16cintrin.h index 0ed966abbce..bee036f3db9 100644 --- a/clang/lib/Headers/f16cintrin.h +++ b/clang/lib/Headers/f16cintrin.h @@ -29,9 +29,19 @@ #define __F16CINTRIN_H /* Define the default attributes for the functions in this file. */ -#define __DEFAULT_FN_ATTRS \ +#define __DEFAULT_FN_ATTRS \ __attribute__((__always_inline__, __nodebug__, __target__("f16c"))) +/// \brief Converts a 16-bit half-precision float value into a 32-bit float +/// value. +/// +/// \headerfile <x86intrin.h> +/// +/// This intrinsic corresponds to the \c VCVTPH2PS instruction. +/// +/// \param a +/// A 16-bit half-precision float value. +/// \returns The converted 32-bit float value. static __inline float __DEFAULT_FN_ATTRS _cvtsh_ss(unsigned short a) { @@ -40,17 +50,73 @@ _cvtsh_ss(unsigned short a) return r[0]; } +/// \brief Converts a 32-bit single-precision float value to a 16-bit +/// half-precision float value. +/// +/// \headerfile <x86intrin.h> +/// +/// \code +/// unsigned short _cvtss_sh(float a, const int imm); +/// \endcode +/// +/// This intrinsic corresponds to the \c VCVTPS2PH instruction. +/// +/// \param a +/// A 32-bit single-precision float value to be converted to a 16-bit +/// half-precision float value. +/// \param imm +/// An immediate value controlling rounding using bits [2:0]: +/// 000: Nearest +/// 001: Down +/// 010: Up +/// 011: Truncate +/// 1XX: Use MXCSR.RC for rounding +/// \returns The converted 16-bit half-precision float value. #define _cvtss_sh(a, imm) \ ((unsigned short)(((__v8hi)__builtin_ia32_vcvtps2ph((__v4sf){a, 0, 0, 0}, \ (imm)))[0])) +/// \brief Converts a 128-bit vector containing 32-bit float values into a +/// 128-bit vector containing 16-bit half-precision float values. +/// +/// \headerfile <x86intrin.h> +/// +/// \code +/// __m128i _mm_cvtps_ph(__m128 a, const int imm); +/// \endcode +/// +/// This intrinsic corresponds to the \c VCVTPS2PH instruction. +/// +/// \param a +/// A 128-bit vector containing 32-bit float values. +/// \param imm +/// An immediate value controlling rounding using bits [2:0]: +/// 000: Nearest +/// 001: Down +/// 010: Up +/// 011: Truncate +/// 1XX: Use MXCSR.RC for rounding +/// \returns A 128-bit vector containing converted 16-bit half-precision float +/// values. The lower 64 bits are used to store the converted 16-bit +/// half-precision floating-point values. #define _mm_cvtps_ph(a, imm) \ ((__m128i)__builtin_ia32_vcvtps2ph((__v4sf)(__m128)(a), (imm))) +/// \brief Converts a 128-bit vector containing 16-bit half-precision float +/// values into a 128-bit vector containing 32-bit float values. +/// +/// \headerfile <x86intrin.h> +/// +/// This intrinsic corresponds to the \c VCVTPH2PS instruction. +/// +/// \param a +/// A 128-bit vector containing 16-bit half-precision float values. The lower +/// 64 bits are used in the conversion. +/// \returns A 128-bit vector of [4 x float] containing converted float values. static __inline __m128 __DEFAULT_FN_ATTRS -_mm_cvtph_ps(__m128i __a) +_mm_cvtph_ps(__m128i a) { - return (__m128)__builtin_ia32_vcvtph2ps((__v8hi)__a); + return (__m128)__builtin_ia32_vcvtph2ps((__v8hi)a); } #undef __DEFAULT_FN_ATTRS |
