Code

Performance audit, Spring 2017#41469

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bors merged 8 commits intorust-lang:masterrust-lang/rust:masterfrom arielb1:rustc-spring-cleaningarielb1/rust:rustc-spring-cleaningCopy head branch name to clipboardApr 22, 2017

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Commits on Apr 22, 2017

• remove cleanup branches to the resume block

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• avoid calling mk_region unnecessarily

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• short-cut SharedCrateContext::layout_of

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• cache attributes of items from foreign crates

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• weak_lang_items: check for lang attribute before calling value_str

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• allocate less strings in symbol_names

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• add a cache to impl_polarity

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• bail out of selection when there are multiple surviving candidates

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