Re: Bug#556790: gcc-4.3: unrecognizable insn on alpha
On Wed, Dec 02, 2009 at 12:18:47AM -0500, Matt Turner wrote:
> On Tue, Dec 1, 2009 at 3:08 PM, Michael Cree <mcree@orcon.net.nz> wrote:
> > On 18/11/2009, at 9:31 AM, Kurt Roeckx wrote:
> >
> >> Package: gcc-4.3
> >> Version: 4.3.4-5
> >>
> >> Hi,
> >>
> >> I recently started seeing several cases of gcc giving an error
> >> message like this:
> >> packet-l2tp.c:1680: error: unrecognizable insn:
> >> (insn 419 86 84 9 packet-l2tp.c:1585 (set (reg:DI 200)
> >> (ne:SI (reg:DI 76 [ prephitmp.1208 ])
> >> (const_int 0 [0x0]))) -1 (nil))
> >> packet-l2tp.c:1680: internal compiler error: in extract_insn, at
> >> recog.c:2001
> >
> >
> > Would this be http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42113 ??
>
> Hmm. The patch that _uncovered_ (not caused) the regression was
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8603
>
> It was included in >4.3.4 (that is, not in 4.3.4), 4.4.2, and the 4.5
> branch, so I don't think it could be 42113, but it certainly couldn't
> hurt to test.
>
> I'd be nice to know what this code is that triggers the error.
Note that there is a list of packages you could try to reproduce
it and a reduced test case in the debian bug tracker.
Kurt
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