[Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop

[jiangning.liu at amperecomputing dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134

--- Comment #10 from Jiangning Liu <jiangning.liu at amperecomputing dot com> 
---
(In reply to Martin Sebor from comment #9)
> But since GCC emits infinite loops regardless of whether or not
> they have any side-effects, whether inc() is pure or not may not matter. 

I think "for (; it != m.end (); ++it);  /* get an empty loop */" is a finite
loop.