git.sesse.net Git - stockfish/commit

]> git.sesse.net Git - stockfish/commit

author	Marco Costalba <mcostalba@gmail.com>
	Wed, 12 Aug 2009 07:40:03 +0000 (09:40 +0200)
committer	Marco Costalba <mcostalba@gmail.com>
	Fri, 14 Aug 2009 07:13:42 +0000 (08:13 +0100)
commit	fd12e8cb239180607559bb805e233f7ea704a67c
tree	dc1f2256f0f4c0d948d2849059eb7531d9721c1d	tree \| snapshot
parent	166c09a7a0eafb706a961d6533c73cc248f6df94	commit \| diff

Finally fix prefetch on Linux

It was due to a missing -msse compiler option !

Without this option the CPU silently discards
prefetcht2 instructions during execution.

Also added a (gcc documented) hack to prevent Intel
compiler to optimize away the prefetches.

Special thanks to Heinz for testing and suggesting
improvments. And for Jim for testing icc on Windows.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

src/Makefile		diff \| blob \| history
src/tt.cpp		diff \| blob \| history

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