https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117467
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
- 32.11% (anonymous namespace)::pass_ext_dce::execute(function*)
▒
- ext_dce_execute()
▒
- 32.10% df_worklist_dataflow(dataflow*, bitmap_head*, int*, int)
▒
- 32.08% ext_dce_rd_transfer_n(int)
▒
+ 14.75% ext_dce_process_uses(rtx_insn*, rtx_def*,
bitmap_head*, bool) ▒
+ 8.18% bitmap_ior_into(bitmap_head*, bitmap_head const*)
▒
+ 4.49% ext_dce_process_sets(rtx_insn*, rtx_def*,
bitmap_head*) ▒
3.34% bitmap_copy(bitmap_head*, bitmap_head const*)
▒
1.31% bitmap_equal_p(bitmap_head const*, bitmap_head
const*)
likely (unverified) also the source of 25GB memory use.
The DF problem seems seriously unoptimized - it lacks a separate "local"
compute
step (the ext_dce_process_sets part that populates live_tmp _per insn_!).
