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Fix AVX512 build with older compilers

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avoids an intrinsic that is missing in gcc < 10.

For this target, might trigger another gcc bug on windows that
requires up-to-date gcc 8, 9, or 10, or usage of clang.

Fixes https://github.com/official-stockfish/Stockfish/issues/2975

closes https://github.com/official-stockfish/Stockfish/pull/2976

No functional change
This commit is contained in:
mstembera
2020-08-10 12:52:46 -07:00
committed by Joost VandeVondele
parent 399cddf444
commit f46c73040c
2 changed files with 2 additions and 3 deletions
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src/Makefile
+1 -1
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@@ -416,7 +416,7 @@ endif
ifeq ($(avx512),yes)
CXXFLAGS += -DUSE_AVX512
ifeq ($(comp),$(filter $(comp),gcc clang mingw))
CXXFLAGS += -mavx512bw
CXXFLAGS += -mavx512f -mavx512bw
endif
endif