bjoernager/rust
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Rc: reduce duplicate calls.

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This commit is contained in:
Mazdak Farrokhzad 2019-06-19 04:56:58 +02:00
parent 2efbc9e5a2
commit bf8f6c399b
1 changed files with 8 additions and 4 deletions
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12
src/liballoc/rc.rs
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@ -1674,14 +1674,16 @@ trait RcBoxPtr<T: ?Sized> {
#[inline]
fn inc_strong(&self) {
let strong = self.strong();
// We want to abort on overflow instead of dropping the value.
// The reference count will never be zero when this is called;
// nevertheless, we insert an abort here to hint LLVM at
// an otherwise missed optimization.
if self.strong() == 0 || self.strong() == usize::max_value() {
if strong == 0 || strong == usize::max_value() {
unsafe { abort(); }
}
self.inner().strong.set(self.strong() + 1);
self.inner().strong.set(strong + 1);
}
#[inline]
@ -1696,14 +1698,16 @@ trait RcBoxPtr<T: ?Sized> {
#[inline]
fn inc_weak(&self) {
let weak = self.weak();
// We want to abort on overflow instead of dropping the value.
// The reference count will never be zero when this is called;
// nevertheless, we insert an abort here to hint LLVM at
// an otherwise missed optimization.
if self.weak() == 0 || self.weak() == usize::max_value() {
if weak == 0 || weak == usize::max_value() {
unsafe { abort(); }
}
self.inner().weak.set(self.weak() + 1);
self.inner().weak.set(weak + 1);
}
#[inline]