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| author | Björn Steinbrink <bsteinbr@gmail.com> | 2015-11-20 21:42:13 +0100 |
|---|---|---|
| committer | Björn Steinbrink <bsteinbr@gmail.com> | 2015-11-20 21:42:13 +0100 |
| commit | 6741f3315af8c8f124796b4fde042a1099588598 (patch) | |
| tree | 2db4270436bd2c5b79fb3ea1ed64d558b45541d6 /src/liballoc_system | |
| parent | f8827f527560a5ddea50a213440a89d3bff2bfea (diff) | |
| download | rust-6741f3315af8c8f124796b4fde042a1099588598.tar.gz rust-6741f3315af8c8f124796b4fde042a1099588598.zip | |
Avoid FCA loads and extractvalue when copying fat pointers
Since fat pointers do not qualify as structural types, they got copied using load_ty and store_ty, which means that we load an FCA and use extractvalue to get the components of the fat pointer. This breaks certain optimizations in LLVM. Found via apasel422/ref_count#13
Diffstat (limited to 'src/liballoc_system')
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