Skip unnecessary comparison with half-open range patterns #121376
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(I'll r+ this once I get an answer to my question above) @rustbot label: -S-waiting-on-review +S-waiting-on-author |
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Fixed the documentation to clarify the invariant I was relying on. @rustbot ready (fyi |
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…llaumeGomez Rollup of 7 pull requests Successful merges: - rust-lang#119748 (Increase visibility of `join_path` and `split_paths`) - rust-lang#120820 (Enable CMPXCHG16B, SSE3, SAHF/LAHF and 128-bit Atomics (in nightly) in Windows x64) - rust-lang#121000 (pattern_analysis: rework how we hide empty private fields) - rust-lang#121376 (Skip unnecessary comparison with half-open range patterns) - rust-lang#121596 (Use volatile access instead of `#[used]` for `on_tls_callback`) - rust-lang#121669 (Count stashed errors again) - rust-lang#121783 (Emitter cleanups) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#121376 - Nadrieril:mir-half-ranges, r=pnkfelix Skip unnecessary comparison with half-open range patterns This is the last remaining detail in the implementation of half-open range patterns. Until now, a half-open range pattern like `10..` was converted to `10..T::MAX` before lowering to MIR, which generated an extra pointless comparison. With this PR we don't generate it.
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This is the last remaining detail in the implementation of half-open range patterns. Until now, a half-open range pattern like
10..was converted to10..T::MAXbefore lowering to MIR, which generated an extra pointless comparison. With this PR we don't generate it.