[Bug tree-optimization/108523] [13 Regression] -O1 -fcode-hoisting causes long compilation time ?

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108523

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
We don't converge:

Predication says _347 and _346 are equal on edge 108 -> 20
Setting value number of g_6_lsm.126_456 to _346 (changed)
Iterating to 25 BB20
...
Setting value number of g_6_lsm.126_456 to _347 (changed)
Iterating to 25 BB20
...
Predication says _347 and _346 are equal on edge 108 -> 20
Setting value number of g_6_lsm.126_456 to _346 (changed)
Iterating to 25 BB20
...
Setting value number of g_6_lsm.126_456 to _347 (changed)
Iterating to 25 BB20
...