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Switch to hardware PEXT

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Retire software pext and introduce hardware
call when USE_PEXT is defined during compilation.

This is a full complete implementation of sliding
attacks using PEXT.

No functional change.
This commit is contained in:
Marco Costalba
2014-04-07 21:04:34 +02:00
parent c556fe1d71
commit da2f8880b9
3 changed files with 8 additions and 21 deletions
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src/types.h
+6
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@@ -54,6 +54,12 @@
# include <nmmintrin.h> // Intel header for _mm_popcnt_u64() intrinsic
#endif
#if defined(USE_PEXT)
# include <x86intrin.h> // Gcc header for _pext_u64() intrinsic
#else
# define _pext_u64(b, m) (0)
#endif
# if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
# include <xmmintrin.h> // Intel and Microsoft header for _mm_prefetch()
# endif