[Bug tree-optimization/58957] [4.8 Regression] compilation slow at -O3 on x86_64-linux-gnu (both 32-bit and 64-bit modes)

[su at cs dot ucdavis.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58957

--- Comment #3 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Richard Biener from comment #2)
> I think it's just awfully slow (deep loop nest, possible to unroll
> completely).
> It terminates for me on the branch and for 4.8.2 and 4.8.1.
> 
>  tree CFG cleanup        :   8.49 (88%) usr   0.00 ( 0%) sys   8.52 (87%)
> wall     783 kB ( 2%) ggc
>  TOTAL                 :   9.70             0.06             9.80           
> 51528 kB
> 
> on trunk and 4.7.3:
> 
>  TOTAL                 :   0.09             0.00             0.10           
> 1865 kB

You are right Richard --- I didn't wait long enough.