[Bug tree-optimization/82776] Unable to optimize the loop when iteration count is unavailable.

[hiraditya at msn dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82776

--- Comment #9 from AK <hiraditya at msn dot com> ---
Are we also taking advantage of this statement in the standard:

> An iteration statement that performs no input/output operations, does not access volatile objects, and performs no
synchronization or atomic operations in its body, controlling
expression, or (in the case of a for statement) its expression may be assumed
by the implementation to terminate.