From: bors <bors@rust-lang.org>
Date: Mon, 17 Aug 2020 18:33:24 +0000 (+0000)
Subject: Auto merge of #74748 - simonvandel:simplify-discriminant-arm, r=wesleywiser
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=33c96b4d9782cf6364e47cb2c904e66b06c22bb4;p=rust.git

Auto merge of #74748 - simonvandel:simplify-discriminant-arm, r=wesleywiser

MIR-OPT: Make SimplifyBranchSame able to remove identity match with fieldless variant

Modifies SimplifyBranchSame so that it can see that the statements can be considered equal in the following example
`_0 = _1` and `discriminant(_0) = discriminant(0)` are considered equal if 0 is a fieldless variant of an enum.
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33c96b4d9782cf6364e47cb2c904e66b06c22bb4