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Add 64-bit element rotates for POWER7

pull/748/head
Jeffrey Walton 2018-11-24 03:27:12 -05:00
parent cf3dfa2745
commit 758e31d5a0
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GPG Key ID: B36AB348921B1838
1 changed files with 41 additions and 2 deletions
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43
ppc_simd.h
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@ -25,7 +25,7 @@
// DO NOT USE this pattern in VecLoad and VecStore. We have to use the // DO NOT USE this pattern in VecLoad and VecStore. We have to use the
// spaghetti code tangled in preprocessor macros because XLC 12 generates // spaghetti code tangled in preprocessor macros because XLC 12 generates
// bad code in some places. To verify the bad code generation test on // bad code in some places. To verify the bad code generation test on
// GCC111 with XLC 12.01 installed. XLC 13 on GCC112 and GCC119 is OK. // GCC111 with XLC 12.01 installed. XLC 13 on GCC112 and GCC119 are OK.
// //
// inline uint32x4_p VecLoad(const byte src[16]) // inline uint32x4_p VecLoad(const byte src[16])
// { // {
@ -338,7 +338,6 @@ inline uint64x2_p VecLoad(int off, const word64 src[2])
#endif // _ARCH_PWR7 #endif // _ARCH_PWR7
/// \brief Loads a vector from an aligned byte array /// \brief Loads a vector from an aligned byte array
/// \param src the byte array /// \param src the byte array
/// \details VecLoadAligned loads a vector in from an aligned byte array. /// \details VecLoadAligned loads a vector in from an aligned byte array.
@ -1144,6 +1143,26 @@ inline uint32x4_p VecRotateLeft(const uint32x4_p vec)
return vec_rl(vec, m); return vec_rl(vec, m);
} }
#if defined(_ARCH_PWR7) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
/// \brief Rotate a vector left
/// \tparam C shift bit count
/// \param vec the vector
/// \returns vector
/// \details VecRotateLeft rotates each element in a packed vector by bit count.
/// \details VecRotateLeft with 64-bit elements is available on POWER7 and above.
/// \par Wraps
/// vec_rl
/// \since Crypto++ 8.0
template<unsigned int C>
inline uint64x2_p VecRotateLeft(const uint64x2_p vec)
{
const uint64x2_p m = {C, C};
return vec_rl(vec, m);
}
#endif
/// \brief Rotate a vector right /// \brief Rotate a vector right
/// \tparam C shift bit count /// \tparam C shift bit count
/// \param vec the vector /// \param vec the vector
@ -1159,6 +1178,26 @@ inline uint32x4_p VecRotateRight(const uint32x4_p vec)
return vec_rl(vec, m); return vec_rl(vec, m);
} }
#if defined(_ARCH_PWR7) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
/// \brief Rotate a vector right
/// \tparam C shift bit count
/// \param vec the vector
/// \returns vector
/// \details VecRotateRight rotates each element in a packed vector by bit count.
/// \details VecRotateRight with 64-bit elements is available on POWER7 and above.
/// \par Wraps
/// vec_rl
/// \since Crypto++ 8.0
template<unsigned int C>
inline uint64x2_p VecRotateRight(const uint64x2_p vec)
{
const uint64x2_p m = {64-C, 64-C};
return vec_rl(vec, m);
}
#endif
/// \brief Exchange high and low double words /// \brief Exchange high and low double words
/// \tparam T vector type /// \tparam T vector type
/// \param vec the vector /// \param vec the vector