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authorbors <bors@rust-lang.org>2020-10-26 23:22:39 +0000
committerbors <bors@rust-lang.org>2020-10-26 23:22:39 +0000
commita4d30a7b490065f0aa56f58e508a11546445aea9 (patch)
treebbdc3de20631e3de526db464604dc767a99b30fe /compiler/rustc_errors/src
parentfd542592f08ca0d1f7255600115c2eafdf6b5da7 (diff)
parent4c3e06a0ba557c5915d8c00f23455461549f07f6 (diff)
downloadrust-a4d30a7b490065f0aa56f58e508a11546445aea9.tar.gz
rust-a4d30a7b490065f0aa56f58e508a11546445aea9.zip
Auto merge of #77876 - tmiasko:simplify-locals, r=wesleywiser
Remove unused set-discriminant statements and assignments regardless of rvalue

* Represent use counts with u32
* Unify use count visitors
* Change RemoveStatements visitor into a function
* Remove unused set-discriminant statements
* Use exhaustive match to clarify what is being optimized
* Remove unused assignments regardless of rvalue kind
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