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| author | Jack Wrenn <jack@wrenn.fyi> | 2025-04-17 17:58:34 +0000 |
|---|---|---|
| committer | Jack Wrenn <jack@wrenn.fyi> | 2025-04-20 03:06:59 +0000 |
| commit | 957b5488a5fb3875006c06577d9049177ed971bc (patch) | |
| tree | 71f4bde6f53fcf4bdf406073cc4247a7494fbb2a /tests/rustdoc-js-std/full-path-function.js | |
| parent | 883f9f72e87ccb6838d528d8158ea6323baacc65 (diff) | |
| download | rust-957b5488a5fb3875006c06577d9049177ed971bc.tar.gz rust-957b5488a5fb3875006c06577d9049177ed971bc.zip | |
transmutability: remove NFA intermediate representation
Prior to this commit, the transmutability analysis used an intermediate NFA representation of type layout. We then determinized this representation into a DFA, upon which we ran the core transmutability analysis. Unfortunately, determinizing NFAs is expensive. In this commit, we avoid NFAs entirely by observing that Rust `union`s are the only source of nondeterminism and that it is comparatively cheap to compute the DFA union of DFAs. We also implement Graphviz DOT debug formatting of DFAs. Fixes rust-lang/project-safe-transmute#23 Fixes rust-lang/project-safe-transmute#24
Diffstat (limited to 'tests/rustdoc-js-std/full-path-function.js')
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