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| author | David Faust <david.faust@oracle.com> | 2023-07-27 13:55:44 -0700 |
|---|---|---|
| committer | David Faust <david.faust@oracle.com> | 2023-07-27 15:35:52 -0700 |
| commit | 14dab1a1bcc3f0315e33d166df06520fba409c9b (patch) | |
| tree | a943632c09b2ae482e683e6822c45cd5ba55e473 /gcc/tree-ssa-loop-split.cc | |
| parent | 9cbf4286a9d126e2fd8d2989313761d21614d288 (diff) | |
| download | gcc-14dab1a1bcc3f0315e33d166df06520fba409c9b.zip gcc-14dab1a1bcc3f0315e33d166df06520fba409c9b.tar.gz gcc-14dab1a1bcc3f0315e33d166df06520fba409c9b.tar.bz2 | |
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.
Diffstat (limited to 'gcc/tree-ssa-loop-split.cc')
0 files changed, 0 insertions, 0 deletions