https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103916
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-01-05
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note the pass is run but we have
/* Avoid loop header copying when optimizing for size unless we can
determine that the loop condition is static in the first
iteration. */
if (optimize_loop_for_size_p (loop)
&& !loop->force_vectorize
&& !entry_loop_condition_is_static (loop, query))
guarding it where the optimize_loop_for_size_p is conservative to size for -Os.
We might want to use similar logic as unrolling to determine the size cost of
the BB peeling done (basically share it) and thus allow more cases.
