https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113495
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=111241,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=46590
--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC there's a duplicate for this. It's df_analyze_loop calling
df_reorganize_refs_* which is doing O(function-size) work for each loop.
With -O3 and vectorization the number of loops tends to blow up, making the
issue worse.
