I have successfully bootstrapped and regtested the patch on loongarch64- linux-gnu. The test cases in the patch (intended for RISC-V) also works on LoongArch per my manual testing.
On Mon, 2024-01-01 at 14:04 -0700, Jeff Law wrote: > 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. > > This still is enabled at -O1 or above, but that's to get as much testing > as possible. Assuming the rest is ACK'd for the trunk we'll put it into > the list of optimizations enabled by -O2. -- Xi Ruoyao <xry...@xry111.site> School of Aerospace Science and Technology, Xidian University
