make trait matching smarter with projections #27866
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arielb1
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r+ modulo arielb1@e93d01d#commitcomment-12744047 |
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August 17, 2015 21:53
also, use the right caching logic for type_moves_by_default (this was broken by @jroesch). before: 593.10user 5.21system 7:51.41elapsed 126%CPU (0avgtext+0avgdata 1150016maxresident)k llvm: 427.045 after: 577.76user 4.27system 7:36.13elapsed 127%CPU (0avgtext+0avgdata 1141608maxresident)k llvm: 431.001
this doesn't cause a measurable perf increase, but it makes callgrind output cleaner. Anyway, rustc should be using FNV everywhere.
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I have some reasons to suspect this doesn't completely work. Investigating. |
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fixed that |
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August 18, 2015 00:24
this avoids needless substituting before: 577.76user 4.27system 7:36.13elapsed 127%CPU (0avgtext+0avgdata 1141608maxresident)k after: 573.01user 4.04system 7:33.86elapsed 127%CPU (0avgtext+0avgdata 1141656maxresident)k
before: 573.01user 4.04system 7:33.86elapsed 127%CPU (0avgtext+0avgdata 1141656maxresident)k after: 567.03user 4.00system 7:28.23elapsed 127%CPU (0avgtext+0avgdata 1133112maxresident)k an additional 1% improvement
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@bors r+ |
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📌 Commit 13809ff has been approved by |
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also, use the right caching logic for type_moves_by_default (this was broken by @jroesch). ``` before: 593.10user 5.21system 7:51.41elapsed 126%CPU (0avgtext+0avgdata 1150016maxresident)k after: 567.03user 4.00system 7:28.23elapsed 127%CPU (0avgtext+0avgdata 1133112maxresident)k ``` A nice 4.5% improvement. For reference, on the last run LLVM takes 429.267s, which is 75% - hopefully this can be reduced. I think the regression since #27751 is because of the wf patch - need to investigate it through. r? @nikomatsakis
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also, use the right caching logic for type_moves_by_default (this was
broken by @jroesch).
A nice 4.5% improvement. For reference, on the last run LLVM takes 429.267s, which is 75% - hopefully this can be reduced.
I think the regression since #27751 is because of the wf patch - need to investigate it through.
r? @nikomatsakis