[Bug rtl-optimization/118739] [15 Regression] wrong code at -O{s,3} with "-fno-tree-forwprop -fno-tree-vrp" on x86_64-linux-gnu since r15-268-g9dbff9c05520a7

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118739

--- Comment #15 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #14)
> However (and as shown in Comment #11) the flags register is far from UNUSED
> (let alone DEAD), because it is used in i3. So, the proposed solution is to
> simply remove REG_UNUSED or REG_DEAD notes when the register is also
> mentioned in i3.
That is, "... to simply remove REG_UNUSED or REG_DEAD notes from i2 when ..."