[Bug rtl-optimization/98863] WRF with LTO consumes a lot of memory in split2 pass
rguenth at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu Jan 28 14:24:24 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98863
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
df-problems.c:228 (df_rd_alloc) 702M: 6.9% 705M
18M: 0.7% 0 0 heap
df-problems.c:509 (df_rd_transfer_function) 3709M: 36.6% 3709M
188M: 7.1% 0 0 heap
df-problems.c:227 (df_rd_alloc) 4417M: 43.6% 4417M
111M: 4.2% 0 0 heap
that's not 20Gb but quite a bit. For GC memory complete unrolling is the
biggest offender (but "only" 500MB).
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