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[clang] Separate Intel ADC instrinsics from ADX intrinsics (#75992)
See #75711 for discussion. As a summary from the PR above, `<adxintrin.h>` includes adc intrinsics and adx intrinsics. To support MSVC STL we need to expose the adc intrinsics inside the currently proposed `<intrin0.h>` header. Move the processor agnostic adc intrinsics into a separate file that can be included from `<immintrin.h>` and the currently proposed `<intrin0.h>`.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| /*===---- adcintrin.h - ADC intrinsics -------------------------------------=== | ||
| * | ||
| * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||
| * See https://llvm.org/LICENSE.txt for license information. | ||
| * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| * | ||
| *===-----------------------------------------------------------------------=== | ||
| */ | ||
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| #ifndef __ADCINTRIN_H | ||
| #define __ADCINTRIN_H | ||
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| #if !defined(__i386__) && !defined(__x86_64__) | ||
| #error "This header is only meant to be used on x86 and x64 architecture" | ||
| #endif | ||
|
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| /* Define the default attributes for the functions in this file. */ | ||
| #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__)) | ||
|
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| /* Use C++ inline semantics in C++, GNU inline for C mode. */ | ||
| #if defined(__cplusplus) | ||
| #define __INLINE __inline | ||
| #else | ||
| #define __INLINE static __inline | ||
| #endif | ||
|
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| #if defined(__cplusplus) | ||
| extern "C" { | ||
| #endif | ||
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| /// Adds unsigned 32-bit integers \a __x and \a __y, plus 0 or 1 as indicated | ||
| /// by the carry flag \a __cf. Stores the unsigned 32-bit sum in the memory | ||
| /// at \a __p, and returns the 8-bit carry-out (carry flag). | ||
| /// | ||
| /// \code{.operation} | ||
| /// temp := (__cf == 0) ? 0 : 1 | ||
| /// Store32(__p, __x + __y + temp) | ||
| /// result := CF | ||
| /// \endcode | ||
| /// | ||
| /// \headerfile <immintrin.h> | ||
| /// | ||
| /// This intrinsic corresponds to the \c ADC instruction. | ||
| /// | ||
| /// \param __cf | ||
| /// The 8-bit unsigned carry flag; any non-zero value indicates carry. | ||
| /// \param __x | ||
| /// A 32-bit unsigned addend. | ||
| /// \param __y | ||
| /// A 32-bit unsigned addend. | ||
| /// \param __p | ||
| /// Pointer to memory for storing the sum. | ||
| /// \returns The 8-bit unsigned carry-out value. | ||
| __INLINE unsigned char __DEFAULT_FN_ATTRS _addcarry_u32(unsigned char __cf, | ||
| unsigned int __x, | ||
| unsigned int __y, | ||
| unsigned int *__p) { | ||
| return __builtin_ia32_addcarryx_u32(__cf, __x, __y, __p); | ||
| } | ||
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| /// Adds unsigned 32-bit integer \a __y to 0 or 1 as indicated by the carry | ||
| /// flag \a __cf, and subtracts the result from unsigned 32-bit integer | ||
| /// \a __x. Stores the unsigned 32-bit difference in the memory at \a __p, | ||
| /// and returns the 8-bit carry-out (carry or overflow flag). | ||
| /// | ||
| /// \code{.operation} | ||
| /// temp := (__cf == 0) ? 0 : 1 | ||
| /// Store32(__p, __x - (__y + temp)) | ||
| /// result := CF | ||
| /// \endcode | ||
| /// | ||
| /// \headerfile <immintrin.h> | ||
| /// | ||
| /// This intrinsic corresponds to the \c SBB instruction. | ||
| /// | ||
| /// \param __cf | ||
| /// The 8-bit unsigned carry flag; any non-zero value indicates carry. | ||
| /// \param __x | ||
| /// The 32-bit unsigned minuend. | ||
| /// \param __y | ||
| /// The 32-bit unsigned subtrahend. | ||
| /// \param __p | ||
| /// Pointer to memory for storing the difference. | ||
| /// \returns The 8-bit unsigned carry-out value. | ||
| __INLINE unsigned char __DEFAULT_FN_ATTRS _subborrow_u32(unsigned char __cf, | ||
| unsigned int __x, | ||
| unsigned int __y, | ||
| unsigned int *__p) { | ||
| return __builtin_ia32_subborrow_u32(__cf, __x, __y, __p); | ||
| } | ||
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| #ifdef __x86_64__ | ||
| /// Adds unsigned 64-bit integers \a __x and \a __y, plus 0 or 1 as indicated | ||
| /// by the carry flag \a __cf. Stores the unsigned 64-bit sum in the memory | ||
| /// at \a __p, and returns the 8-bit carry-out (carry flag). | ||
| /// | ||
| /// \code{.operation} | ||
| /// temp := (__cf == 0) ? 0 : 1 | ||
| /// Store64(__p, __x + __y + temp) | ||
| /// result := CF | ||
| /// \endcode | ||
| /// | ||
| /// \headerfile <immintrin.h> | ||
| /// | ||
| /// This intrinsic corresponds to the \c ADC instruction. | ||
| /// | ||
| /// \param __cf | ||
| /// The 8-bit unsigned carry flag; any non-zero value indicates carry. | ||
| /// \param __x | ||
| /// A 64-bit unsigned addend. | ||
| /// \param __y | ||
| /// A 64-bit unsigned addend. | ||
| /// \param __p | ||
| /// Pointer to memory for storing the sum. | ||
| /// \returns The 8-bit unsigned carry-out value. | ||
| __INLINE unsigned char __DEFAULT_FN_ATTRS | ||
| _addcarry_u64(unsigned char __cf, unsigned long long __x, | ||
| unsigned long long __y, unsigned long long *__p) { | ||
| return __builtin_ia32_addcarryx_u64(__cf, __x, __y, __p); | ||
| } | ||
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| /// Adds unsigned 64-bit integer \a __y to 0 or 1 as indicated by the carry | ||
| /// flag \a __cf, and subtracts the result from unsigned 64-bit integer | ||
| /// \a __x. Stores the unsigned 64-bit difference in the memory at \a __p, | ||
| /// and returns the 8-bit carry-out (carry or overflow flag). | ||
| /// | ||
| /// \code{.operation} | ||
| /// temp := (__cf == 0) ? 0 : 1 | ||
| /// Store64(__p, __x - (__y + temp)) | ||
| /// result := CF | ||
| /// \endcode | ||
| /// | ||
| /// \headerfile <immintrin.h> | ||
| /// | ||
| /// This intrinsic corresponds to the \c ADC instruction. | ||
| /// | ||
| /// \param __cf | ||
| /// The 8-bit unsigned carry flag; any non-zero value indicates carry. | ||
| /// \param __x | ||
| /// The 64-bit unsigned minuend. | ||
| /// \param __y | ||
| /// The 64-bit unsigned subtrahend. | ||
| /// \param __p | ||
| /// Pointer to memory for storing the difference. | ||
| /// \returns The 8-bit unsigned carry-out value. | ||
| __INLINE unsigned char __DEFAULT_FN_ATTRS | ||
| _subborrow_u64(unsigned char __cf, unsigned long long __x, | ||
| unsigned long long __y, unsigned long long *__p) { | ||
| return __builtin_ia32_subborrow_u64(__cf, __x, __y, __p); | ||
| } | ||
| #endif | ||
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| #if defined(__cplusplus) | ||
| } | ||
| #endif | ||
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| #undef __INLINE | ||
| #undef __DEFAULT_FN_ATTRS | ||
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| #endif /* __ADCINTRIN_H */ |
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