[Bug ipa/115855] Slow compilation of Firefox with -O2 (in callgraph expansion)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115855

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> This is with a checking compiler though so testing with =release

One thing you can test without recompile of gcc is -fno-checking .

Second thing is:
garbage collection                 :   3.38 (  5%)   0.13 (  1%)   3.54 (  4%) 
   0  (  0%)

Which shows up more with checking=yes due to lower gc parameters.