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rust-lang / rust Public

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specialize some collection and iterator operations to run in-place#70793

Merged

bors merged 63 commits intorust-lang:masterrust-lang/rust:masterfrom

the8472:in-place-iter-collectthe8472/rust:in-place-iter-collectCopy head branch name to clipboard

Sep 3, 2020

Conversation Commits63 (63)Checks Files changed

Commits

Commits on Sep 3, 2020

unrelated typo fix
the8472
committed
bench
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committed
in-place collect for Vec. Box<[]> and BinaryHeap IntoIter and some adapters
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committed
mark SourceIter as unsafe, document invariants
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assert that SourceIter requirements have not been violated by the pipeline
the8472
committed
implement drop handling
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committed
use add instead of offset
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committed
fix doc link
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committed
simplify pointer arithmetic
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committed
update benches
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committed
recover vectorization
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remove example that relied on non-public trait
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committed
hide binary_heap::IntoIter internals behind impl Trait
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committed
restore Vec::extend specialization for vec::IntoIter sources that
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committed
use memmove instead of generic in-place iteration for IntoIter source
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add benches from bluss' gists
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return the things under test so they get black_box()'ed
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committed
cyclic in-place reuse bench
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committed
bench in-place collect of droppables
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committed
exercise more of the in-place pipeline in the bench
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committed
use From specializations on extend if extended Vec is empty
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committed
restore SpecFrom<T, TrustedLen<Item=T>> specialization by nesting
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specialize creating a Vec from a slice iterator where T: Copy
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committed
improve comments
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committed
remove redundant code
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committed
fix some in-place-collect edge-cases
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committed
additional specializations tests
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committed
bench in-place zip
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add in-place iteration for Zip
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move free-standing method into trait impl
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support in-place iteration for most adapters
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make tidy happy
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remove unecessary feature flag
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include in-place .zip() in test
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bench larger allocations
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impl TrustedRandomAccess for vec::IntoIter
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fix build issue due to stabilized feature
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committed
fix: bench didn't black_box its results
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avoid exposing that binary heap's IntoIter is backed by vec::IntoIter, use a private trait instead
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mark as_inner as unsafe and update comments
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committed
replace drop flag with ManuallyDrop
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committed
pacify tidy
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replace unsafe ptr::write with deref-write, benchmarks show no difference
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committed
move unsafety into method, not relevant to caller
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committed
test drops during in-place iteration
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committed
remove redundant cast
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committed
add benchmark to cover in-place extend
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extract IntoIter drop/forget used by specialization into separate methods
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committed
work around compiler overhead around lambdas in generics by extracting them into free functions
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committed
increase comment verbosity
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committed
generalize in-place collect to types of same size and alignment
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committed
pacify tidy
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support in-place collect for MapWhile adapters
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committed
apply required min_specialization attributes
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committed
fix benchmark compile errors
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committed
avoid applying in-place collect specialization in type-length test
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committed
get things to work under min_specialization by leaning more heavily on #[rustc_unsafe_specialization_marker]
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committed
please tidy
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committed
remove empty Vec extend optimization
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committed
remove separate no-drop code path since it resulted in more LLVM IR
the8472
committed
add explanation to specialization marker
the8472
committed
improve comments and naming
the8472
committed
fix debug assertion
the8472
committed

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