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Let prefetch to be enabled by default on Windows

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When compiling with MSVC we don't use the Makefile
so tweak a bit the Makefile to allow to let prefetch
in by default so that it works under Windows.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-05-20 21:37:37 +01:00
parent efdd1e697a
commit cab8b78846
2 changed files with 8 additions and 3 deletions
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7
src/Makefile
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@ -64,6 +64,7 @@ OBJS = application.o bitboard.o pawns.o material.o endgame.o evaluate.o main.o \
### 2.1. General
debug = no
optimize = yes
no_prefetch = yes
### 2.2 Architecture specific
@ -278,7 +279,11 @@ endif
### 3.8 prefetch
ifeq ($(prefetch),yes)
CXXFLAGS += -msse -DUSE_PREFETCH
no_prefetch = no
endif
ifeq ($(no_prefetch),yes)
CXXFLAGS += -msse -DNO_PREFETCH
DEPENDFLAGS += -msse
endif

4
src/tt.cpp
View file

@ -25,7 +25,7 @@
#include <cassert>
#include <cmath>
#include <cstring>
#if defined(USE_PREFETCH)
#if !defined(NO_PREFETCH)
# include <xmmintrin.h>
#endif
@ -166,7 +166,7 @@ TTEntry* TranspositionTable::retrieve(const Key posKey) const {
/// to be loaded from RAM, that can be very slow. When we will
/// subsequently call retrieve() the TT data will be already
/// quickly accessible in L1/L2 CPU cache.
#if !defined(USE_PREFETCH)
#if defined(NO_PREFETCH)
void TranspositionTable::prefetch(const Key) const {}
#else