https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110782
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by David Faust <dfa...@gcc.gnu.org>: https://gcc.gnu.org/g:14dab1a1bcc3f0315e33d166df06520fba409c9b commit r14-2831-g14dab1a1bcc3f0315e33d166df06520fba409c9b Author: David Faust <david.fa...@oracle.com> Date: Thu Jul 27 13:55:44 2023 -0700 bpf: ISA V4 sign-extending move and load insns [PR110782,PR110784] BPF ISA V4 introduces sign-extending move and load operations. This patch makes the BPF backend generate those instructions, when enabled and useful. A new option, -m[no-]smov gates generation of these instructions, and is enabled by default for -mcpu=v4 and above. Tests for the new instructions and documentation for the new options are included. PR target/110782 PR target/110784 gcc/ * config/bpf/bpf.opt (msmov): New option. * config/bpf/bpf.cc (bpf_option_override): Handle it here. * config/bpf/bpf.md (*extendsidi2): New. (extendhidi2): New. (extendqidi2): New. (extendsisi2): New. (extendhisi2): New. (extendqisi2): New. * doc/invoke.texi (Option Summary): Add -msmov eBPF option. (eBPF Options): Add -m[no-]smov. Document that -mcpu=v4 also enables -msmov. gcc/testsuite/ * gcc.target/bpf/sload-1.c: New test. * gcc.target/bpf/sload-pseudoc-1.c: New test. * gcc.target/bpf/smov-1.c: New test. * gcc.target/bpf/smov-pseudoc-1.c: New test.
