[Bug target/83496] [7/8 regression] wrong code generated with -Os -mbranch-cost=1

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83496

--- Comment #25 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> /var/nbd/lede/build_dir/toolchain-mipsel_24kc_gcc-7.3.0_musl/gcc-7.3.0/gcc/
> reorg.c:3895
> 
> Line 1787 in reorg.c is this piece of code:
>     if (REG_NOTE_KIND (link) != REG_DEAD
>         || !REG_P (XEXP (link, 0)))
>       continue;

Weird, this looks like some ill-formed REG_DEAD note.  I'll try to reproduce on
SPARC tomorrow.