On 1/3/24 05:07, Richard Sandiford wrote:
Jeff Law <j...@ventanamicro.com> writes:
I know we're deep into stage3 and about to transition to stage4. So if
the consensus is for this to wait, I'll understand....
This it the V3 of the ext-dce patch based on Joern's work from last year.
Changes since V2:
Handle MINUS
Minor logic cleanup for SUBREGs in ext_dce_process_sets
Includes Joern's carry_backpropagate work
Cleaned up and removed some use handling code for STRICT_LOW_PART
Moved non-local goto special case out of main use handling, similar to
how we handle CALL_INSN_FUSAGE
Use df_simple_dataflow rather than custom dataflow handling
There's more cleanups we could be doing here, but the question is do we
stop commit what we've got and iterate on the trunk or do we defer until
gcc-15 in which case we iterate on a branch or something.
FWIW, I think it should go in now. The patch looks good to me with the
changes below.
Just a note. With the late-combine work deferring I think this should
defer as well. So I'll keep it in the tester, open it up to more
cleanups from Jivan and look to integrate as gcc-15 development starts.
jeff
