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| author | Andrii Nakryiko <[email protected]> | 2023-11-01 20:37:45 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2023-11-09 18:58:39 -0800 |
| commit | 93f7378734b595fb61e89b802002fb7e3a1267d2 (patch) | |
| tree | 4b91f51e3eb45a4ef49478481e261ed6d9529a1d /tools/perf/scripts/python/powerpc-hcalls.py | |
| parent | f4c7e887324f5776eef6e6e47a90e0ac8058a7a8 (diff) | |
bpf: derive smin/smax from umin/max bounds
Add smin/smax derivation from appropriate umin/umax values. Previously the
logic was surprisingly asymmetric, trying to derive umin/umax from smin/smax
(if possible), but not trying to do the same in the other direction. A simple
addition to __reg64_deduce_bounds() fixes this.
Added also generic comment about u64/s64 ranges and their relationship.
Hopefully that helps readers to understand all the bounds deductions
a bit better.
Acked-by: Eduard Zingerman <[email protected]>
Acked-by: Shung-Hsi Yu <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/powerpc-hcalls.py')
0 files changed, 0 insertions, 0 deletions