[Bug target/110784] New: bpf: make use of the V4 sign-extended move instructions

[jemarch at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110784

            Bug ID: 110784
           Summary: bpf: make use of the V4 sign-extended move
                    instructions
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jemarch at gcc dot gnu.org
  Target Milestone: ---

The BPF V4 ISA introduces three new instructions to move 16-, 32- and 64-bit
signed values to 64-bit registers with sign extension.  We shall make GCC to
use these instructions whenever feasible/desirable, but only with -mcpu=v4 or
later.