https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86654
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
With the dwarf2out.c file patches, now the library builds. But it took my ~30
minutes of linking, seeing perf top:
36.96% lto1 [.] lookup_external_ref
18.60% lto1 [.] hash_table<external_ref_hasher,
xcallocator>::find_empty_slot_for_expand
4.68% as [.] hash_lookup.isra.0
1.92% as [.] resolve_symbol_value
0.74% lto1 [.] mark_used_flags
0.72% as [.] relax_segment
and debug info of the shared library looks huge:
bloaty ./obj-x86_64-pc-linux-gnu/toolkit/library/libxul.so
VM SIZE FILE SIZE
-------------- --------------
0.0% 0 .debug_info 937Mi 52.7%
0.0% 0 .debug_loc 339Mi 19.1%
0.0% 0 .debug_str 159Mi 9.0%
0.0% 0 .debug_ranges 110Mi 6.2%
0.0% 0 .debug_line 69.0Mi 3.9%
68.3% 65.3Mi .text 65.3Mi 3.7%
0.0% 0 .strtab 33.1Mi 1.9%
0.0% 0 .symtab 24.4Mi 1.4%
0.0% 0 .debug_abbrev 9.99Mi 0.6%
8.3% 7.91Mi .rela.dyn 7.91Mi 0.4%
8.0% 7.67Mi .rodata 7.67Mi 0.4%
6.2% 5.89Mi .eh_frame 5.89Mi 0.3%
4.1% 3.90Mi .data.rel.ro 3.90Mi 0.2%
1.7% 1.59Mi .dynstr 1.59Mi 0.1%
1.4% 1.35Mi .eh_frame_hdr 1.35Mi 0.1%
1.0% 990Ki [Other] 1003Ki 0.1%
0.6% 616Ki .bss 0 0.0%
0.4% 398Ki .dynsym 398Ki 0.0%
0.0% 0 .debug_pubtypes 349Ki 0.0%
0.0% 0 .debug_pubnames 285Ki 0.0%
0.0% 23 [None] 0 0.0%
100.0% 95.6Mi TOTAL 1.74Gi 100.0%
