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Optimize make_index() using templates and lookup tables.

Browse Source 
https://tests.stockfishchess.org/tests/view/634517e54bc7650f07542f99
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 642672 W: 171819 L: 170658 D: 300195
Ptnml(0-2): 2278, 68077, 179416, 69336, 2229

this also introduces `-flto-partition=one` as suggested by MinetaS (Syine Mineta)
to avoid linking errors due to LTO on 32 bit mingw. This change was tested in isolation as well

https://tests.stockfishchess.org/tests/view/634aacf84bc7650f0755188b
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 119352 W: 31986 L: 31862 D: 55504
Ptnml(0-2): 439, 12624, 33400, 12800, 413

closes https://github.com/official-stockfish/Stockfish/pull/4199

No functional change
This commit is contained in:
mstembera
2022-10-14 14:41:08 -07:00
committed by Joost VandeVondele
parent e90341f9c9
commit 93f71ecfe1
4 changed files with 96 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/Makefile
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@@ -698,11 +698,9 @@ ifeq ($(debug), no)
# To use LTO and static linking on Windows,
# the tool chain requires gcc version 10.1 or later.
else ifeq ($(comp),mingw)
ifneq ($(arch),i386)
CXXFLAGS += -flto
CXXFLAGS += -flto -flto-partition=one
LDFLAGS += $(CXXFLAGS) -save-temps
endif
endif
endif
endif