[tree-ssa] i386 bootstrap failure

[Vladimir Merzliakov]

> The current tree-ssa branch fails to bootstrap on i386 (and by i386 I
> really mean i386, for it seems to work on i586):
>
[skip]
>   /cvs/gcc-ts/gcc/combine.c: In function `simplify_comparison':
>   /cvs/gcc-ts/gcc/combine.c:10294: warning: 'mask' might be used
uninitialized in this function
[skip]
> Seen on i386-pc-linux-gnu.
>
> Gerald
>
As I already report for i386-unknown-freebsd5.1 in closed  bug report
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13477