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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/67609] [5/6 Regression] Generates wrong code for SSE2 _mm_load_pd
Date: Fri, 16 Oct 2015 12:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67609

--- Comment #9 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Vladimir Makarov from comment #8)
> 
> Why do LRA and reload remove subregs of hard registers? That is because some
> subsequent optimizations can handle them.
> 

Sorry, it should be *can not handle*.

Basically keeping subregisters crashes other passes on GCC bootstrap.