[Bug tree-optimization/59951] [4.9 Regression] bootstrap comparison failure with -O3 for a week

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59951

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, just compiling bitmap.c at -O3 I see a compare-debug failure and

> ./cc1plus -quiet -O3 bitmap.ii -fopt-info-vec -g
> ./cc1plus -quiet -O3 bitmap.ii -fopt-info-vec 
/space/rguenther/src/svn/trunk/gcc/bitmap.c:1536:38: note: basic block
vectorized
/space/rguenther/src/svn/trunk/gcc/bitmap.c:1536:38: note: basic block
vectorized
/space/rguenther/src/svn/trunk/gcc/bitmap.c:1536:38: note: basic block
vectorized

reducing.