[Bug middle-end/84040] [8 regression] compilation time of gcc.c-torture/compile/limits-blockid.c is 50x slower

[jgreenhalgh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84040

James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-01-25
                 CC|                            |jgreenhalgh at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Confirmed on aarch64-none-linux-gnu. My bisect pointed to the same revision
r255569 . The 50x slow-down is surprising, and may be much larger than
expected? Otherwise we could workaround this with -gno-statement-frontiers for
this test.