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authorbors <bors@rust-lang.org>2016-09-20 08:01:01 -0700
committerGitHub <noreply@github.com>2016-09-20 08:01:01 -0700
commitc772948b687488a087356cb91432425662e034b9 (patch)
treebff1c7822b91450f04d0cabaf98ee85b0df9b2ce /src/rustllvm/RustWrapper.cpp
parent2c2552b712386dd01a9d620aff960b98cddb4098 (diff)
parent480287ec3b0260e26c8796506039c379bd7e0ead (diff)
downloadrust-c772948b687488a087356cb91432425662e034b9.tar.gz
rust-c772948b687488a087356cb91432425662e034b9.zip
Auto merge of #36388 - pcwalton:copy-propagation, r=nikomatsakis
librustc_mir: Implement def-use chains and trivial copy propagation on MIR.

This only supports trivial cases in which there is exactly one def and
one use.

Currently, some random unrelated MIR tests are failing, probably just because they haven't been updated.

r? @eddyb
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