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| author | Daniel Borkmann <daniel@iogearbox.net> | 2020-10-09 22:03:06 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-10-09 22:03:41 +0200 |
| commit | ac53a0d3107c6582b690a8ab348bd637dbd0883f (patch) | |
| tree | 0ca9c625a6c5ef0e8b35c329a06535a97af8a3bc /tools/testing/selftests/bpf/benchs | |
| parent | eca43ee6c46db92dd850ce659316b0680d70e137 (diff) | |
| parent | 54fada41e8a162a45ab13ac4f76af609733d4679 (diff) | |
| download | linux-ac53a0d3107c6582b690a8ab348bd637dbd0883f.tar.bz2 | |
Merge branch 'bpf-llvm-reg-alloc-patterns'
Alexei Starovoitov says:
====================
Make two verifier improvements:
- The llvm register allocator may use two different registers representing
the same virtual register. Teach the verifier to recognize that.
- Track bounded scalar spill/fill.
The profiler[123] test in patch 3 will fail to load without patches 1 and 2.
The profiler[23] test may fail to load on older llvm due to speculative
code motion nd instruction combining optimizations that are fixed in
https://reviews.llvm.org/D85570
v1 -> v2:
- fixed 32-bit mov issue spotted by John.
- allowed r2=r1; r3=r2; sequence as suggested by John.
- added comments, acks, more tests.
====================
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/testing/selftests/bpf/benchs')
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