http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53144
--- Comment #2 from Paolo Bonzini <bonzini at gnu dot org> 2012-04-28 06:19:31 UTC --- In the case of PR53138 this was a preexisting bug in handling -(a < b), made more explicit by the new phi-opt conversion. Looking at vector-compare-1.c and pass ordering (phiopt runs before PRE, which hangs while doing PPRE) it is possible that this is the case too. I'll make a reduced testcase as soon as possible.
