This revision was landed with ongoing or failed builds. This revision was automatically updated to reflect the committed changes. Closed by commit rGa82170fa41ca: [Headers] Add some intrinsic function descriptions to immintrin.h. (authored by probinson). Herald added a project: clang.
Changed prior to commit: https://reviews.llvm.org/D147461?vs=510568&id=510778#toc Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D147461/new/ https://reviews.llvm.org/D147461 Files: clang/lib/Headers/immintrin.h
Index: clang/lib/Headers/immintrin.h =================================================================== --- clang/lib/Headers/immintrin.h +++ clang/lib/Headers/immintrin.h @@ -284,18 +284,45 @@ #if !(defined(_MSC_VER) || defined(__SCE__)) || __has_feature(modules) || \ defined(__RDRND__) +/// Returns a 16-bit hardware-generated random value. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDRAND </c> instruction. +/// +/// \param __p +/// A pointer to a 16-bit memory location to place the random value. +/// \returns 1 if the value was successfully generated, 0 otherwise. static __inline__ int __attribute__((__always_inline__, __nodebug__, __target__("rdrnd"))) _rdrand16_step(unsigned short *__p) { return (int)__builtin_ia32_rdrand16_step(__p); } +/// Returns a 32-bit hardware-generated random value. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDRAND </c> instruction. +/// +/// \param __p +/// A pointer to a 32-bit memory location to place the random value. +/// \returns 1 if the value was successfully generated, 0 otherwise. static __inline__ int __attribute__((__always_inline__, __nodebug__, __target__("rdrnd"))) _rdrand32_step(unsigned int *__p) { return (int)__builtin_ia32_rdrand32_step(__p); } +/// Returns a 64-bit hardware-generated random value. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDRAND </c> instruction. +/// +/// \param __p +/// A pointer to a 64-bit memory location to place the random value. +/// \returns 1 if the value was successfully generated, 0 otherwise. #ifdef __x86_64__ static __inline__ int __attribute__((__always_inline__, __nodebug__, __target__("rdrnd"))) _rdrand64_step(unsigned long long *__p) @@ -325,48 +352,108 @@ #if !(defined(_MSC_VER) || defined(__SCE__)) || __has_feature(modules) || \ defined(__FSGSBASE__) #ifdef __x86_64__ +/// Reads the FS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDFSBASE </c> instruction. +/// +/// \returns The lower 32 bits of the FS base register. static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _readfsbase_u32(void) { return __builtin_ia32_rdfsbase32(); } +/// Reads the FS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDFSBASE </c> instruction. +/// +/// \returns The contents of the FS base register. static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _readfsbase_u64(void) { return __builtin_ia32_rdfsbase64(); } +/// Reads the GS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDGSBASE </c> instruction. +/// +/// \returns The lower 32 bits of the GS base register. static __inline__ unsigned int __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _readgsbase_u32(void) { return __builtin_ia32_rdgsbase32(); } +/// Reads the GS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> RDGSBASE </c> instruction. +/// +/// \returns The contents of the GS base register. static __inline__ unsigned long long __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _readgsbase_u64(void) { return __builtin_ia32_rdgsbase64(); } +/// Modifies the FS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> WRFSBASE </c> instruction. +/// +/// \param __V +/// Value to use for the lower 32 bits of the FS base register. static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _writefsbase_u32(unsigned int __V) { __builtin_ia32_wrfsbase32(__V); } +/// Modifies the FS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> WRFSBASE </c> instruction. +/// +/// \param __V +/// Value to use for the FS base register. static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _writefsbase_u64(unsigned long long __V) { __builtin_ia32_wrfsbase64(__V); } +/// Modifies the GS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> WRGSBASE </c> instruction. +/// +/// \param __V +/// Value to use for the lower 32 bits of the GS base register. static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _writegsbase_u32(unsigned int __V) { __builtin_ia32_wrgsbase32(__V); } +/// Modifies the GS base register. +/// +/// \headerfile <immintrin.h> +/// +/// This intrinsic corresponds to the <c> WRFSBASE </c> instruction. +/// +/// \param __V +/// Value to use for GS base register. static __inline__ void __attribute__((__always_inline__, __nodebug__, __target__("fsgsbase"))) _writegsbase_u64(unsigned long long __V) {
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