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| 14 | pmbaty | 1 | /*===---- __wmmintrin_pclmul.h - PCMUL intrinsics ---------------------------=== |
| 2 | * |
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| 3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | * See https://llvm.org/LICENSE.txt for license information. |
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| 5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | * |
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| 7 | *===-----------------------------------------------------------------------=== |
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| 8 | */ |
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| 9 | |||
| 10 | #ifndef __WMMINTRIN_H |
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| 11 | #error "Never use <__wmmintrin_pclmul.h> directly; include <wmmintrin.h> instead." |
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| 12 | #endif |
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| 13 | |||
| 14 | #ifndef __WMMINTRIN_PCLMUL_H |
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| 15 | #define __WMMINTRIN_PCLMUL_H |
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| 16 | |||
| 17 | /// Multiplies two 64-bit integer values, which are selected from source |
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| 18 | /// operands using the immediate-value operand. The multiplication is a |
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| 19 | /// carry-less multiplication, and the 128-bit integer product is stored in |
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| 20 | /// the destination. |
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| 21 | /// |
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| 22 | /// \headerfile <x86intrin.h> |
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| 23 | /// |
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| 24 | /// \code |
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| 25 | /// __m128i _mm_clmulepi64_si128(__m128i X, __m128i Y, const int I); |
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| 26 | /// \endcode |
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| 27 | /// |
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| 28 | /// This intrinsic corresponds to the <c> VPCLMULQDQ </c> instruction. |
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| 29 | /// |
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| 30 | /// \param X |
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| 31 | /// A 128-bit vector of [2 x i64] containing one of the source operands. |
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| 32 | /// \param Y |
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| 33 | /// A 128-bit vector of [2 x i64] containing one of the source operands. |
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| 34 | /// \param I |
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| 35 | /// An immediate value specifying which 64-bit values to select from the |
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| 36 | /// operands. Bit 0 is used to select a value from operand \a X, and bit |
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| 37 | /// 4 is used to select a value from operand \a Y: \n |
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| 38 | /// Bit[0]=0 indicates that bits[63:0] of operand \a X are used. \n |
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| 39 | /// Bit[0]=1 indicates that bits[127:64] of operand \a X are used. \n |
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| 40 | /// Bit[4]=0 indicates that bits[63:0] of operand \a Y are used. \n |
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| 41 | /// Bit[4]=1 indicates that bits[127:64] of operand \a Y are used. |
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| 42 | /// \returns The 128-bit integer vector containing the result of the carry-less |
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| 43 | /// multiplication of the selected 64-bit values. |
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| 44 | #define _mm_clmulepi64_si128(X, Y, I) \ |
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| 45 | ((__m128i)__builtin_ia32_pclmulqdq128((__v2di)(__m128i)(X), \ |
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| 46 | (__v2di)(__m128i)(Y), (char)(I))) |
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| 47 | |||
| 48 | #endif /* __WMMINTRIN_PCLMUL_H */ |