On 8/2/23 06:44, Richard Biener via Gcc-patches wrote:
The following adds an on-demand global liveness computation class
computing and caching the live-out virtual operand of basic blocks
and answering live-out, live-in and live-on-edge queries. The flow
is optimized for the intended use in code sinking which will query
live-in and possibly can be optimized further when the originating
query is for live-out.
The code relies on up-to-date immediate dominator information and
on an unchanging virtual operand state.
Bootstrapped and tested on x86_64-unknown-linux-gnu (with 2/2).
OK?
Thanks,
Richard.
* tree-ssa-live.h (class virtual_operand_live): New.
* tree-ssa-live.cc (virtual_operand_live::init): New.
(virtual_operand_live::get_live_in): Likewise.
(virtual_operand_live::get_live_out): Likewise.
LGTM.
jeff
