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Big-endian compatible pop_1st_bit()

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Thanks to Eric Mullins we have now endian friendly
pop_1st_bit() and also is removed the need to use
-fno-strict-aliasing compiler option with GCC.

Speed is almost as fast, very small difference if any in
perft test, so I assume almost no difference in real games.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-11-05 19:29:26 +01:00
parent a9e536a7eb
commit dc286d2673
3 changed files with 120 additions and 104 deletions
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14
src/Makefile
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@@ -39,6 +39,14 @@ ICCFLAGS += -DNDEBUG
ICCFLAGS-OSX += -DNDEBUG
### ==========================================================================
### Enable/disable compile for a big-endian CPU, disabled by default
### ==========================================================================
GCCFLAGS += -DNBIGENDIAN
ICCFLAGS += -DNBIGENDIAN
ICCFLAGS-OSX += -DNBIGENDIAN
### ==========================================================================
### Run built-in benchmark for pgo-builds with: 32MB hash 1 thread 10 depth
### These settings are generally fast, but may be changed experimentally
@@ -47,9 +55,9 @@ PGOBENCH = ./$(EXE) bench 32 1 10 default depth
### General compiler settings. Do not change
GCCFLAGS += -g -Wall -fno-exceptions -fno-rtti -fno-strict-aliasing
ICCFLAGS += -g -Wall -fno-exceptions -fno-rtti -fno-strict-aliasing -wd383,869,981,10187,10188,11505,11503
ICCFLAGS-OSX += -g -Wall -fno-exceptions -fno-rtti -fno-strict-aliasing -wd383,869,981,10187,10188,11505,11503
GCCFLAGS += -g -Wall -fno-exceptions -fno-rtti
ICCFLAGS += -g -Wall -fno-exceptions -fno-rtti -wd383,869,981,10187,10188,11505,11503
ICCFLAGS-OSX += -g -Wall -fno-exceptions -fno-rtti -wd383,869,981,10187,10188,11505,11503
### General linker settings. Do not change