http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58021
Bug ID: 58021
Summary: MODE_EXIT switches at NOTE_INSN_DELETED
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: amylaar at gcc dot gnu.org
The last function of gcc.dg/fold-mulconj-1.c:
_Complex int bar(_Complex int z)
{
return z * ~z;
}
gets miscompiled for epiphany-elf.
In compute_pre_exit, we break the do .. while (nregs).. loop with
last_insn pointing to a NOTE_INSN_DELETED, above which there are
two multiplies - needing a mode different than the exit.
However, because the NOTE_INSN_DELETED fails the INSN_P test,
the code that does the first split_block call is not executed,
and pre_exit ends up containing the multiplies.
