1 /*===---- __wmmintrin_pclmul.h - PCMUL intrinsics ---------------------------=== 2 * 3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 * See https://llvm.org/LICENSE.txt for license information. 5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 * 7 *===-----------------------------------------------------------------------=== 8 */ 9 10 #ifndef __WMMINTRIN_H 11 #error "Never use <__wmmintrin_pclmul.h> directly; include <wmmintrin.h> instead." 12 #endif 13 14 #ifndef __WMMINTRIN_PCLMUL_H 15 #define __WMMINTRIN_PCLMUL_H 16 17 /// Multiplies two 64-bit integer values, which are selected from source 18 /// operands using the immediate-value operand. The multiplication is a 19 /// carry-less multiplication, and the 128-bit integer product is stored in 20 /// the destination. 21 /// 22 /// \headerfile <x86intrin.h> 23 /// 24 /// \code 25 /// __m128i _mm_clmulepi64_si128(__m128i X, __m128i Y, const int I); 26 /// \endcode 27 /// 28 /// This intrinsic corresponds to the <c> VPCLMULQDQ </c> instruction. 29 /// 30 /// \param X 31 /// A 128-bit vector of [2 x i64] containing one of the source operands. 32 /// \param Y 33 /// A 128-bit vector of [2 x i64] containing one of the source operands. 34 /// \param I 35 /// An immediate value specifying which 64-bit values to select from the 36 /// operands. Bit 0 is used to select a value from operand \a X, and bit 37 /// 4 is used to select a value from operand \a Y: \n 38 /// Bit[0]=0 indicates that bits[63:0] of operand \a X are used. \n 39 /// Bit[0]=1 indicates that bits[127:64] of operand \a X are used. \n 40 /// Bit[4]=0 indicates that bits[63:0] of operand \a Y are used. \n 41 /// Bit[4]=1 indicates that bits[127:64] of operand \a Y are used. 42 /// \returns The 128-bit integer vector containing the result of the carry-less 43 /// multiplication of the selected 64-bit values. 44 #define _mm_clmulepi64_si128(X, Y, I) \ 45 ((__m128i)__builtin_ia32_pclmulqdq128((__v2di)(__m128i)(X), \ 46 (__v2di)(__m128i)(Y), (char)(I))) 47 48 #endif /* __WMMINTRIN_PCLMUL_H */ 49