[Bug ipa/63576] [5 Regression] ICE : in ipa_merge_profiles, at ipa-utils.c:540 during Firefox LTO/PGO build

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63576

--- Comment #10 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Unfortunately your patch dosen't work:

lto1: internal compiler error: Segmentation fault
0xa12f6f crash_signal
        ../../gcc/gcc/toplev.c:381
0x88b190 ipa_merge_profiles(cgraph_node*, cgraph_node*)
        ../../gcc/gcc/ipa-utils.c:637
0x603722 lto_cgraph_replace_node
        ../../gcc/gcc/lto/lto-symtab.c:124
0x604cf3 lto_symtab_merge_symbols_1
        ../../gcc/gcc/lto/lto-symtab.c:619
0x604cf3 lto_symtab_merge_symbols()
        ../../gcc/gcc/lto/lto-symtab.c:647
0x5fa52e read_cgraph_and_symbols
        ../../gcc/gcc/lto/lto.c:3109
0x5fa52e lto_main()
        ../../gcc/gcc/lto/lto.c:3436
Please submit a full bug report,
with preprocessed source if appropriate.
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