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Revert "Use compiler intrinsic instead of assembly for popcnt"

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This reverts commit a69f1d7c20.
This commit is contained in:
Gary Linscott 2014-07-01 17:01:54 -04:00
parent a69f1d7c20
commit b9a88da4ab
2 changed files with 3 additions and 2 deletions
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2
src/Makefile
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@ -285,7 +285,7 @@ endif
### 3.9 popcnt ### 3.9 popcnt
ifeq ($(popcnt),yes) ifeq ($(popcnt),yes)
CXXFLAGS += -msse4.2 -DUSE_POPCNT CXXFLAGS += -msse3 -DUSE_POPCNT
endif endif
### 3.10 pext ### 3.10 pext

3
src/bitcount.h
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@ -96,7 +96,8 @@ inline int popcount<CNT_HW_POPCNT>(Bitboard b) {
#else #else
return __builtin_popcountll(b); __asm__("popcnt %1, %0" : "=r" (b) : "r" (b));
return b;
#endif #endif
} }