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

[jakub at gcc dot gnu.org]

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

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, instead of no insns at all wqe have 100000 debug markers in a single bb and
nothing else.  So some slowdown is completely justified.
The 2 minutes looks weird, even -O0 built cc1 on x86_64 takes just 1:10 minute
to compile it, with a single pass that takes most time:
 scheduling 2            :  55.89 (85%) usr   0.02 ( 5%) sys  56.00 (84%) wall 
  3908 kB ( 2%) ggc
With RTL checking but optimized x86_64 cc1:
 scheduling 2            :  17.95 (90%) usr   0.01 ( 2%) sys  17.99 (86%) wall 
  3908 kB ( 2%) ggc
So something is wrong during sched2.