diff options
| author | jeffreytan81 <jeffreytan@meta.com> | 2024-10-29 20:42:54 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-10-29 20:42:54 -0700 |
| commit | cb04d3378096b83e5e357490ff8b1c479f34c469 (patch) | |
| tree | 62846c996dbebfd127599a7238a917016d3feb67 /llvm/lib/CodeGen/MachineFunctionAnalysis.cpp | |
| parent | 0d94c7b5ceb84b33b50c8e7b1fa66e9996a29373 (diff) | |
| download | llvm-cb04d3378096b83e5e357490ff8b1c479f34c469.zip llvm-cb04d3378096b83e5e357490ff8b1c479f34c469.tar.gz llvm-cb04d3378096b83e5e357490ff8b1c479f34c469.tar.bz2 | |
Improve namespace lookup using .debug_names parent chain (#110062)
## Summary
This PR is a continuation of
https://github.com/llvm/llvm-project/pull/108907 by using `.debug_names`
parent chain faster lookup for namespaces.
## Implementation
Similar to https://github.com/llvm/llvm-project/pull/108907. This PR
adds a new API: `GetNamespacesWithParents` in `DWARFIndex` base class.
The API performs the same function as `GetNamespaces()` with additional
filtering using parents `CompilerDeclContext`. A default implementation
is given in `DWARFIndex` class which parses debug info and performs the
matching. In the `DebugNameDWARFIndex` override, parents
`CompilerDeclContext` is cross checked with parent chain in
`.debug_names` for much faster filtering before fallback to base
implementation for final filtering.
## Performance Results
For the same benchmark used in
https://github.com/llvm/llvm-project/pull/108907, this PR improves: 48s
=> 28s
---------
Co-authored-by: jeffreytan81 <jeffreytan@fb.com>
Diffstat (limited to 'llvm/lib/CodeGen/MachineFunctionAnalysis.cpp')
0 files changed, 0 insertions, 0 deletions