https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82106
Palmer Dabbelt <palmer at gcc dot gnu.org> changed:
What |Removed |Added
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Assignee|unassigned at gcc dot gnu.org |palmer at gcc dot
gnu.org
CC| |palmer at gcc dot gnu.org
--- Comment #8 from Palmer Dabbelt <palmer at gcc dot gnu.org> ---
This came up in the patchwork meeting, and I guess since I'd commented before
I'm on the hook. It's been 8-ish years, but here's my best attempt at decoding
what I was saying back then:
By "I'd like to call this an ABI bug", I think I meant that the ABI is
essentially proscribing a misaligned access here and it'd be nice to change
that. It's definitely too late to do that now, though.
Looking at the code from Jim's patch, I'd expect something different --
essentially we'd just forbid the fld as it's likely misaligned and thus slow,
and instead fall back to lw;lw;shift;or;fmv.x. Maybe that's just slower than
the load/store juggling, though.
Either way, I'm assigning this to myself. Mostly as a test to see if I can get
any work done these days... ;)
