[Bug debug/68302] [5/6 Regression] ICE with debugging enabled on mips

[aurelien at aurel32 dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68302

--- Comment #4 from Aurelien Jarno <aurelien at aurel32 dot net> ---
The bisection shows that this commit has fixed the issue on trunk:

2015-07-23  Richard Biener  <rguenther@suse.de>

    PR middle-end/66916
    * match.pd: Guard widen and sign-change comparison simplification
    with single_use.

That said, it just seems to be a side effect of this commit and not a fix for
the original issue.