Alex Crichton 229243c136 rollup merge of #21418: Aatch/assume-refcount ...

The reference count can never be 0, unless we're about to drop the data
completely. Using the `assume` intrinsic allows us to inform LLVM about
that invariant, meaning it can avoid unnecessary drops.

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Before and after IR: https://gist.github.com/Aatch/3786d20df2edaad6a0e8

Generated from the example in #13018

Fixes #13018

2015-01-21 09:16:01 -08:00

..

arc.rs

Rename AtomicInt and AtomicUint

2015-01-11 11:47:44 -08:00

boxed.rs

rollup merge of #21392: japaric/iter

2015-01-21 09:14:39 -08:00

heap.rs

Remove unnecessary explicit conversions to *const T

2015-01-17 07:34:10 +03:00

lib.rs

impl Iterator for &mut Iterator and Box<Iterator>

2015-01-19 10:41:07 -05:00

rc.rs

Add more explanation for why the assumes are there

2015-01-21 09:56:59 +13:00