[Bug tree-optimization/55883] with -fwrapv, (x < 0 && -x < 0) is assumed to be false

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55883

Mikael Pettersson <mikpe at it dot uu.se> changed:

           What    |Removed                     |Added
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                 CC|                            |mikpe at it dot uu.se

--- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> 2013-01-05 20:06:29 UTC ---
Fails all the way back to gcc-3.4.6, older releases don't have -fwrapv.  Fixed
for 4.8 by r193591 == PR55236 fix:
http://gcc.gnu.org/ml/gcc-cvs/2012-11/msg00538.html
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00707.html

The test cases are very very similar so I'd say this is a duplicate of PR55236.

Applying r193591 to 4.7 and 4.6 fixes this test case there too.