mirror of
https://github.com/MariaDB/server.git
synced 2025-01-30 18:41:56 +01:00
c28be510d1
Compiles to same vector code, just a bit simplier. vec_crc32.c is now identical to upstream (https://github.com/antonblanchard/crc32-vpmsum/). C code by Rogerio Alves <rogealve@br.ibm.com> This implemention has been tested on big endian too. Signed-off-by: Daniel Black <daniel@linux.ibm.com>
82 lines
2 KiB
C
82 lines
2 KiB
C
#ifndef CLANG_WORKAROUNDS_H
|
|
#define CLANG_WORKAROUNDS_H
|
|
|
|
/*
|
|
* These stubs fix clang incompatibilities with GCC builtins.
|
|
*/
|
|
|
|
#ifndef __builtin_crypto_vpmsumw
|
|
#define __builtin_crypto_vpmsumw __builtin_crypto_vpmsumb
|
|
#endif
|
|
#ifndef __builtin_crypto_vpmsumd
|
|
#define __builtin_crypto_vpmsumd __builtin_crypto_vpmsumb
|
|
#endif
|
|
|
|
static inline
|
|
__vector unsigned long long __attribute__((overloadable))
|
|
vec_ld(int __a, const __vector unsigned long long* __b)
|
|
{
|
|
return (__vector unsigned long long)__builtin_altivec_lvx(__a, __b);
|
|
}
|
|
|
|
/*
|
|
* GCC __builtin_pack_vector_int128 returns a vector __int128_t but Clang
|
|
* does not recognize this type. On GCC this builtin is translated to a
|
|
* xxpermdi instruction that only moves the registers __a, __b instead generates
|
|
* a load.
|
|
*
|
|
* Clang has vec_xxpermdi intrinsics. It was implemented in 4.0.0.
|
|
*/
|
|
static inline
|
|
__vector unsigned long long __builtin_pack_vector (unsigned long __a,
|
|
unsigned long __b)
|
|
{
|
|
#if defined(__BIG_ENDIAN__)
|
|
__vector unsigned long long __v = {__a, __b};
|
|
#else
|
|
__vector unsigned long long __v = {__b, __a};
|
|
#endif
|
|
return __v;
|
|
}
|
|
|
|
#ifndef vec_xxpermdi
|
|
|
|
static inline
|
|
unsigned long __builtin_unpack_vector (__vector unsigned long long __v,
|
|
int __o)
|
|
{
|
|
return __v[__o];
|
|
}
|
|
|
|
#if defined(__BIG_ENDIAN__)
|
|
#define __builtin_unpack_vector_0(a) __builtin_unpack_vector ((a), 0)
|
|
#define __builtin_unpack_vector_1(a) __builtin_unpack_vector ((a), 1)
|
|
#else
|
|
#define __builtin_unpack_vector_0(a) __builtin_unpack_vector ((a), 1)
|
|
#define __builtin_unpack_vector_1(a) __builtin_unpack_vector ((a), 0)
|
|
#endif
|
|
|
|
#else
|
|
|
|
static inline
|
|
unsigned long __builtin_unpack_vector_0 (__vector unsigned long long __v)
|
|
{
|
|
#if defined(__BIG_ENDIAN__)
|
|
return vec_xxpermdi(__v, __v, 0x0)[1];
|
|
#else
|
|
return vec_xxpermdi(__v, __v, 0x0)[0];
|
|
#endif
|
|
}
|
|
|
|
static inline
|
|
unsigned long __builtin_unpack_vector_1 (__vector unsigned long long __v)
|
|
{
|
|
#if defined(__BIG_ENDIAN__)
|
|
return vec_xxpermdi(__v, __v, 0x3)[1];
|
|
#else
|
|
return vec_xxpermdi(__v, __v, 0x3)[0];
|
|
#endif
|
|
}
|
|
#endif /* vec_xxpermdi */
|
|
|
|
#endif
|