2a9e0831d6
Optimize `rustc_lexer` The `cursor.first()` method in `rustc_lexer` now calls the `chars.next()` method instead of `chars.nth_char(0)`. This allows LLVM to optimize the code better. The biggest win is that `eat_while()` is now fully inlined and generates better assembly. This improves the lexer's performance by 35% in a micro-benchmark I made (Lexing all 18MB of code in the compiler directory). But lexing is only a small part of the overall compilation time, so I don't know how significant it is. Big thanks to criterion and `cargo asm`. |
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| .. | ||
| unescape | ||
| cursor.rs | ||
| lib.rs | ||
| tests.rs | ||
| unescape.rs | ||