On Sun, Mar 20, 2022 at 10:41 PM Richard Sandiford via Gcc-patches
wrote:
>
> rtl-ssa chains definitions into an RPO list. It also groups
> sequences of clobbers together into a single node, so that it's
> possible to skip over the clobbers in constant time in order to
> get the next or previous
rtl-ssa chains definitions into an RPO list. It also groups
sequences of clobbers together into a single node, so that it's
possible to skip over the clobbers in constant time in order to
get the next or previous set.
When adding a clobber to an insn, the main DF barriers for that
clobber are the
