[Bug target/18910] [4.0 Regression] unrecognisable insn in regclass on x86/amd64

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-10 14:18 -------
(In reply to comment #9)
> The fail dates from comment #3 probably refer to this change
> 
> 2004-10-17  Andrew Pinski  <pinskia@physics.uc.edu>
>                                                                                 
>         * c-typeck.c (default_function_array_conversion): Always create
>         &a[0] for array types.
>         (build_unary_op): Do not fold &a[x] into a + x.
> 
> which was reverted again on the same day.  Can someone try with the reghunter
> to see if it failed before October 17 also?

What this tells me it is a latent bug in x86/x86_64 back-end as my change should not change what RTL 
is produced as it is the back-end's job to reject addressing modes.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18910