25 lines
569 B
Rust
25 lines
569 B
Rust
//! Hints to the compiler that affects how code should be emitted or optimized.
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/// Indicate that a given branch is **not** likely to be taken, relatively speaking.
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#[inline(always)]
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#[cold]
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pub(crate) const fn cold_path() {}
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/// Indicate that a given condition is likely to be true.
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#[inline(always)]
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pub(crate) const fn likely(b: bool) -> bool {
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if !b {
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cold_path();
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}
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b
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}
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/// Indicate that a given condition is likely to be false.
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#[inline(always)]
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pub(crate) const fn unlikely(b: bool) -> bool {
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if b {
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cold_path();
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}
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b
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}
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