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authorbors <bors@rust-lang.org>2022-04-30 05:06:47 +0000
committerbors <bors@rust-lang.org>2022-04-30 05:06:47 +0000
commit9a98c63b30bd8419be662b8fb3f3b22ba33d72c5 (patch)
tree1603f7b9476f6194d86bb9db61a7b8b1f3aea1a8 /compiler/rustc_codegen_gcc
parent0c8e520b3e0d9fbdafb8311f1b18a1f847531051 (diff)
parent7149bbcdc5739e4ed1fa3697c1b4d441f1d4441c (diff)
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Auto merge of #96500 - SparrowLii:rpo, r=tmiasko
Reduce duplication of RPO calculation of mir

Computing the RPO of mir is not a low-cost thing, but it is duplicate in many places. In particular the `iterate_to_fixpoint` method which is called multiple times when computing the data flow.
This PR reduces the number of times the RPO is recalculated as much as possible, which should save some compile time.
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