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Rewrite bsfq management

Browse Source 
Use compiler intrinsics when possible to
avoid writing platform specific asm code.

Tested on Windows 7 with MSVC 2013 and mingw 4.8.3 (32 and 64 bit)
and on Linux Mint with g++ 4.8.4 and clang 3.4 (32 and 64 bit).

No functional change

Resolves #609
This commit is contained in:
Marco Costalba
2016-03-28 10:08:06 +02:00
committed by Joona Kiiski
parent 24dac5ccd3
commit db4b0d8b7d
4 changed files with 11 additions and 52 deletions
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src/Makefile
+2 -16
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@@ -50,10 +50,8 @@ OBJS = benchmark.o bitbase.o bitboard.o endgame.o evaluate.o main.o \
# optimize = yes/no --- (-O3/-fast etc.) --- Enable/Disable optimizations
# arch = (name) --- (-arch) --- Target architecture
# bits = 64/32 --- -DIS_64BIT --- 64-/32-bit operating system
# prefetch = yes/no --- -DUSE_PREFETCH --- Use prefetch x86 asm-instruction
# bsfq = yes/no --- -DUSE_BSFQ --- Use bsfq x86_64 asm-instruction (only
# with GCC and ICC 64-bit)
# popcnt = yes/no --- -DUSE_POPCNT --- Use popcnt x86_64 asm-instruction
# prefetch = yes/no --- -DUSE_PREFETCH --- Use prefetch asm-instruction
# popcnt = yes/no --- -DUSE_POPCNT --- Use popcnt asm-instruction
# sse = yes/no --- -msse --- Use Intel Streaming SIMD Extensions
# pext = yes/no --- -DUSE_PEXT --- Use pext x86_64 asm-instruction
#
@@ -66,7 +64,6 @@ optimize = yes
debug = no
bits = 32
prefetch = no
bsfq = no
popcnt = no
sse = no
pext = no
@@ -96,7 +93,6 @@ ifeq ($(ARCH),x86-64)
arch = x86_64
bits = 64
prefetch = yes
bsfq = yes
sse = yes
endif
@@ -104,7 +100,6 @@ ifeq ($(ARCH),x86-64-modern)
arch = x86_64
bits = 64
prefetch = yes
bsfq = yes
popcnt = yes
sse = yes
endif
@@ -113,7 +108,6 @@ ifeq ($(ARCH),x86-64-bmi2)
arch = x86_64
bits = 64
prefetch = yes
bsfq = yes
popcnt = yes
sse = yes
pext = yes
@@ -122,7 +116,6 @@ endif
ifeq ($(ARCH),armv7)
arch = armv7
prefetch = yes
bsfq = yes
endif
ifeq ($(ARCH),ppc-32)
@@ -309,11 +302,6 @@ else
CXXFLAGS += -DNO_PREFETCH
endif
### 3.8 bsfq
ifeq ($(bsfq),yes)
CXXFLAGS += -DUSE_BSFQ
endif
### 3.9 popcnt
ifeq ($(popcnt),yes)
ifeq ($(comp),icc)
@@ -465,7 +453,6 @@ config-sanity:
@echo "arch: '$(arch)'"
@echo "bits: '$(bits)'"
@echo "prefetch: '$(prefetch)'"
@echo "bsfq: '$(bsfq)'"
@echo "popcnt: '$(popcnt)'"
@echo "sse: '$(sse)'"
@echo "pext: '$(pext)'"
@@ -483,7 +470,6 @@ config-sanity:
test "$(arch)" = "ppc64" || test "$(arch)" = "ppc" || test "$(arch)" = "armv7"
@test "$(bits)" = "32" || test "$(bits)" = "64"
@test "$(prefetch)" = "yes" || test "$(prefetch)" = "no"
@test "$(bsfq)" = "yes" || test "$(bsfq)" = "no"
@test "$(popcnt)" = "yes" || test "$(popcnt)" = "no"
@test "$(sse)" = "yes" || test "$(sse)" = "no"
@test "$(pext)" = "yes" || test "$(pext)" = "no"