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| author | Antonio Frighetto <me@antoniofrighetto.com> | 2025-09-24 15:59:32 +0200 |
|---|---|---|
| committer | Antonio Frighetto <me@antoniofrighetto.com> | 2025-09-24 15:59:32 +0200 |
| commit | 32c6e162462bbca3beb2259b90cc922a7419ba2c (patch) | |
| tree | 9f0267bbb5519da8472272dfd6ea6b8249100d8c /lldb/packages/Python/lldbsuite/test/configuration.py | |
| parent | 03742c5dacef177a990f0fa3a3d11ba720fc0ac5 (diff) | |
| download | llvm-32c6e162462bbca3beb2259b90cc922a7419ba2c.zip llvm-32c6e162462bbca3beb2259b90cc922a7419ba2c.tar.gz llvm-32c6e162462bbca3beb2259b90cc922a7419ba2c.tar.bz2 | |
[IR] Introduce `llvm.errno.tbaa` metadata for errno alias disambiguation
Add a new named module-level frontend-annotated metadata that
specifies the TBAA node for an integer access, for which, C/C++
`errno` accesses are guaranteed to use (under strict aliasing).
This should allow LLVM to prove the involved memory location/
accesses may not alias `errno`; thus, to perform optimizations
around errno-writing libcalls (store-to-load forwarding amongst
others).
Previous discussion: https://discourse.llvm.org/t/rfc-modelling-errno-memory-effects/82972.
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/configuration.py')
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