[Bug rtl-optimization/108086] internal compiler error: in set_accesses, at rtl-ssa/internals.inl:449

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Dec 14 08:47:54 GMT 2022


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108086

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ick.

gcc/rtl-ssa/insns.h:  unsigned int m_num_defs : 16;

(gdb) p num_defs
$1 = 86149
(gdb) p m_num_defs
$2 = 20613

(gdb) p m_rtl
$3 = (rtx_insn *) 0x0
(gdb) p is_phi ()
$4 = false
(gdb) p is_bb_head ()
$5 = false
(gdb) p is_artificial ()
$7 = true

m_bb is for ENTRY and for some reason that has a very big live-out bitmap?!

There might be a conservative way to handle this and not blow up where
it does right now?


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