[Bug middle-end/97617] missing aggressive loop optimization warning in C++
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97617 --- Comment #3 from Jan Smets --- Sorry, I was too quickly in my wording to "skip single_exit()", of course that edge is still required.
[Bug middle-end/97617] missing aggressive loop optimization warning in C++
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97617 --- Comment #2 from Jan Smets --- Is it maybe a possibility to report the (possible) false positives with something like -Waggressive-loop-optimizations=2 ? Would that only require a skip of single_exit() in do_warn_aggressive_loop_optimizations, or is there more to it? Thanks
[Bug middle-end/97617] missing aggressive loop optimization warning in C++
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97617 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek --- The warning is documented to be done only for loops that don't have multiple exits (because otherwise it would have too many false positives; when the loop isn't guaranteed to loop 16 times, there might not be an UB). As printf is a possible cancellation point, it isn't marked throw() in the C headers, so if you compile with C++ and don't turn off exceptions, the result is expected - there are EH edges out of the printf call that might terminate the loop.
