[Bug tree-optimization/61515] [4.10 Regression] Extremely long compile time for generated code

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61515

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 32952
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32952&action=edit
stripped down testcase

Stripped down, now it starts to fall off a bit:

 tree SSA incremental    :   1.48 ( 7%) usr   0.42 (33%) sys   1.96 ( 8%) wall 
  1882 kB ( 1%) ggc
 dominator optimization  :  10.57 (50%) usr   0.03 ( 2%) sys  12.44 (48%) wall 
  6918 kB ( 4%) ggc
 TOTAL                 :  21.12             1.27            25.67            
191269 kB

(just cutting in half three times from the bottom and appending } until it
compiles again)