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[Bug target/49257] -mfpmath=sse generates x87 instructions on 32 bits OS
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 6 Jun 2011 08:43:49 +0000
- Subject: [Bug target/49257] -mfpmath=sse generates x87 instructions on 32 bits OS
- Auto-submitted: auto-generated
- References: <bug-49257-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49257
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rth at gcc dot gnu.org
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-06 08:43:00 UTC ---
(In reply to comment #5)
> (In reply to comment #4)
>
> > Attached patch also includes my pathetic attempt to implement
> > ix86_expand_convert_sign_disf_sse, but surely would need some help here...
>
> Let's ask the author of SSE expanders.
It was me? ;) I think it was the other Richard.
But anyway, ix86_expand_convert_sign_disf_sse doesn't look correct for
signed numbers. I think we should try to come up with a bit-fiddling
implementation instead, check to what the soft-fp code expands to.