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[Bug rtl-optimization/67609] [5/6 Regression] Generates wrong code for SSE2 _mm_load_pd
- From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 16 Oct 2015 12:50:07 +0000
- Subject: [Bug rtl-optimization/67609] [5/6 Regression] Generates wrong code for SSE2 _mm_load_pd
- Auto-submitted: auto-generated
- References: <bug-67609-4 at http dot gcc dot gnu dot org/bugzilla/>
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.