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Use popcount intrinsic with Interl compiler

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It seems that icc used our fallback version of popcount.
Now use intrinsics.

icc version 16.0.2 (gcc version 5.3.0 compatibility)
bmi2 compile
uname -r 4.5.1-1-ARCH

20xbench gives a nice speedup
./stockfish-icc-master 2161515 +- 34462
./stockfish-icc-sse42 2260857 +- 50349
This commit is contained in:
erbsenzaehler
2016-05-01 10:57:50 +02:00
committed by Marco Costalba
parent 8f934dff9a
commit 2dd24dc4e6
2 changed files with 2 additions and 2 deletions
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2
src/types.h
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@@ -64,7 +64,7 @@
# define IS_64BIT
#endif
#if defined(USE_POPCNT) && defined(__INTEL_COMPILER) && defined(_MSC_VER)
#if defined(USE_POPCNT) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
# include <nmmintrin.h> // Intel header for _mm_popcnt_u64() intrinsic
#endif