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[Bug target/83252] [8 Regression] Wrong code with "-march=skylake-avx512 -O3"


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83252

--- Comment #13 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #12)
> This broke again with r255377.
> Testcase in patch form at
> https://gcc.gnu.org/ml/gcc-patches/2017-12/msg00133.html

I've started to work on it.  In any case the patch will need a lot of testing. 
I hope to have a fix on this week or at the start of next week.

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