rustc: Switch ty::node_type_table to smallintmap, cut 400mb memory use off a librustc build.#6776
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graydon wants to merge 1 commit intorust-lang:incomingfrom
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rustc: Switch ty::node_type_table to smallintmap, cut 400mb memory use off a librustc build.#6776graydon wants to merge 1 commit intorust-lang:incomingfrom
graydon wants to merge 1 commit intorust-lang:incomingfrom
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…e off a librustc build. Smallintmap was being populated with sparse keys during ast deserialization.
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Out of curiosity, do you know if this hits perf at all? That was the only thing stopping me from doing this when I saw it. Also, yay! |
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The measurements I took show it running slightly faster. Though they were not the most precise, might conflate factors. |
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Smallintmap was being populated with sparse keys during ast deserialization.
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Smallintmap was being populated with sparse keys during ast deserialization.