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Don't panic in duration underflow #12693

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Don't panic in duration underflow #12693

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5 changes: 4 additions & 1 deletion cranelift/codegen/src/timing.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -171,7 +171,10 @@ mod enabled {

/// Returns the total amount of time taken by all the passes measured.
pub fn total(&self) -> Duration {
self.pass.iter().map(|p| p.total - p.child).sum()
self.pass
.iter()
.map(|p| p.total.saturating_sub(p.child))
.sum()
}
}

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