[Bug rtl-optimization/113495] RISC-V: Time and memory awful consumption of SPEC2017 wrf benchmark

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113495

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           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.