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| author | bors <bors@rust-lang.org> | 2017-08-01 22:43:15 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2017-08-01 22:43:15 +0000 |
| commit | 640cfc852ae17d51a2f5e75fcae9a93431a3b38c (patch) | |
| tree | e66ffa71b26ca70a34cacbd4b81e8422a12c5e31 /src/libstd | |
| parent | dd53dd5f9e21dce1fbc06b7f9f451d1009bdcfd8 (diff) | |
| parent | ce0ca763808f4b5d153aaa2787ea253286b449ef (diff) | |
| download | rust-640cfc852ae17d51a2f5e75fcae9a93431a3b38c.tar.gz rust-640cfc852ae17d51a2f5e75fcae9a93431a3b38c.zip | |
Auto merge of #43576 - arielb1:no-unneeded-unwind, r=eddyb
rustc_mir: don't build unused unwind cleanup blocks When building a scope exit, don't build unwind cleanup blocks unless they will actually be used by the unwind path of a drop - the unused blocks are removed by SimplifyCfg, but they can cause a significant performance slowdown before they are removed. That fixes #43511. Also a few other small MIR cleanups & optimizations. r? @eddyb
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