http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54824
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |matz at gcc dot gnu.org
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> 2012-10-24
12:56:35 UTC ---
It is RTL expansion that ends up connecting BB9, a common exit block of
the two unswitched loops randomly to BB10, the loop latch, forming a new loop.
And it is find_many_sub_basic_blocks that does this. Eh ... bad luck.
