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authorbors <bors@rust-lang.org>2017-08-02 05:56:06 +0000
committerbors <bors@rust-lang.org>2017-08-02 05:56:06 +0000
commit0b5c0874b8bc35e5be57ca856994e311772ada1d (patch)
treee10f62aafcb915097f9532dc0ddf1e91504d0865 /src/libstd
parent4f3062c88e588211cb6ca109b22941f921938c3e (diff)
parent70478ca5c83513beb91cce78ae57ade70849fca4 (diff)
downloadrust-0b5c0874b8bc35e5be57ca856994e311772ada1d.tar.gz
rust-0b5c0874b8bc35e5be57ca856994e311772ada1d.zip
Auto merge of #43584 - arielb1:unused-reads, r=eddyb
Fix quadratic performance with lots of use statements

This fixes 2 problems that caused quadratic performance when lots of use-statements were present. After this patch, performance is linear (and very fast) even with 1M uses.

Fixes #43572.
Fixes #43573.

r? @eddyb
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