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Avoid some Place clones.

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This is a 0.5% speedup on ripgrep.
This commit is contained in:
Nicholas Nethercote 2018-08-21 18:06:55 +10:00
parent 3ac79c7184
commit c0636ab087
1 changed files with 4 additions and 1 deletions
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5
src/librustc_mir/borrow_check/mod.rs
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@ -1080,7 +1080,10 @@ impl<'cx, 'gcx, 'tcx> MirBorrowckCtxt<'cx, 'gcx, 'tcx> {
}
}
if self
// Check is_empty() first because it's the common case, and doing that
// way we avoid the clone() call.
if !self.access_place_error_reported.is_empty() &&
self
.access_place_error_reported
.contains(&(place_span.0.clone(), place_span.1))
{