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add unsetindex support to more copyto methods #51760

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Oct 24, 2023
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vtjnash
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@vtjnash vtjnash commented Oct 18, 2023

This is not-quite-public API, but since we have this for Array-to-Array copies, this tries to ensure it also does generically the same behavior for Memory-to-Array and Array-to-Memory as well.

This is not-quite-public API, but since we have this for Array-to-Array
copies, this tries to ensure it also does generically the same behavior
for Memory-to-Array and Array-to-Memory as well.
@vtjnash vtjnash added the domain:collections Data structures holding multiple items, e.g. sets label Oct 18, 2023
@vtjnash vtjnash merged commit f0a28e9 into master Oct 24, 2023
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@vtjnash vtjnash deleted the jn/copy-unsetindex branch October 24, 2023 21:07
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N5N3 commented Nov 3, 2023

@vtjnash Looks like this PR deteriorate copyto! performance for none-Array src. The default isassigned for AbstractArray is try catch based, which seems unacceptable in such hot spot.

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vtjnash commented Nov 6, 2023

I think Keno's recent work to remove try/catch is expected to fix that? Although isassigned should be part of the Array API, so folks should be implementing that too (esp. since #49827 now did that for most of Base)

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N5N3 commented Nov 6, 2023

Then we'd better implement it for all Array wrappers in Base (Now, ReinterpretArray still use the default fallback).
Also, the current code is missing some @propagate_inbounds/@inline.
IIUC, this will prevent isassigned from being optimized away within @inbounds.

BTW, why try/catch elimination helps in this case?
The default fallback catches both BoundsError and UndefRefError.
How can we prove BoundsError would never happen?

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Although isassigned should be part of the Array API, so folks should be implementing that too

https://docs.julialang.org/en/v1/manual/interfaces/#man-interface-array

It appears not to be.

vtjnash added a commit that referenced this pull request Mar 8, 2024
vtjnash added a commit that referenced this pull request Mar 11, 2024
KristofferC pushed a commit that referenced this pull request Mar 15, 2024
KristofferC added a commit that referenced this pull request May 2, 2024
KristofferC added a commit that referenced this pull request May 13, 2024
KristofferC added a commit that referenced this pull request May 13, 2024
This reverts commit f0a28e9.

This introduced in general a try catch inside the inner loop for
`copyto!` and it also has performance regression in other cases
#53430.

Since this was added without any tests and "is not-quite-public API" it
seems easiest to just revert it.
This was added for Memory-to-Array and vice versa but dedicated methods
could be added for that if it is desirable

Fixes #53430,
#52070
KristofferC added a commit that referenced this pull request May 13, 2024
This reverts commit f0a28e9.

(cherry picked from commit ff7e7b8)
KristofferC added a commit that referenced this pull request May 28, 2024
Backported PRs:
- [x] #53665 <!-- use afoldl instead of tail recursion for tuples -->
- [x] #53976 <!-- LinearAlgebra: LazyString in interpolated error
messages -->
- [x] #54005 <!-- make `view(::Memory, ::Colon)` produce a Vector -->
- [x] #54010 <!-- Overload `Base.literal_pow` for `AbstractQ` -->
- [x] #54069 <!-- Allow PrecompileTools to see MI's inferred by foreign
abstract interpreters -->
- [x] #53750 <!-- inference correctness: fields and globals can revert
to undef -->
- [x] #53984 <!-- Profile: fix heap snapshot is valid char check -->
- [x] #54102 <!-- Explicitly compute stride in unaliascopy for SubArray
-->
- [x] #54070 <!-- Fix integer overflow in `skip(s::IOBuffer,
typemax(Int64))` -->
- [x] #54013 <!-- Support case-changes to Annotated{String,Char}s -->
- [x] #53941 <!-- Fix writing of AnnotatedChars to AnnotatedIOBuffer -->
- [x] #54137 <!-- Fix typo in docs for `partialsortperm` -->
- [x] #54129 <!-- use correct size when creating output data from an
IOBuffer -->
- [x] #54153 <!-- Fixup IdSet docstring -->
- [x] #54143 <!-- Fix `make install` from tarballs -->
- [x] #54151 <!-- LinearAlgebra: Correct zero element in
`_generic_matvecmul!` for block adj/trans -->
- [x] #54213 <!-- Add `public` statement to `Base.GC` -->
- [x] #54222 <!-- Utilize correct tbaa when emitting stores of unions.
-->
- [x] #54233 <!-- set MAX_OS_WRITE on unix -->
- [x] #54255 <!-- fix `_checked_mul_dims` in the presence of 0s and
overflow. -->
- [x] #54259 <!-- Fix typo in `readuntil` -->
- [x] #54251 <!-- fix typo in gc_mark_memory8 when chunking a large
array -->
- [x] #54276 <!-- Fix solve for complex `Hermitian` with non-vanishing
imaginary part on diagonal -->
- [x] #54248 <!-- ensure package callbacks are invoked when no valid
precompile file exists for an "auto loaded" stdlib -->
- [x] #54308 <!-- Implement eval-able AnnotatedString 2-arg show -->
- [x] #54302 <!-- Specialised substring equality for annotated strs -->
- [x] #54243 <!-- prevent `package_callbacks` to run multiple time for a
single package -->
- [x] #54350 <!-- add a precompile signature to Artifacts code that is
used by JLLs -->
- [x] #54331 <!-- correctly track freed bytes in
jl_genericmemory_to_string -->
- [x] #53509 <!-- revert moving "creating packages" from Pkg.jl -->
- [x] #54335 <!-- When accessing the data pointer for an array, first
decay it to a Derived Pointer -->
- [x] #54239 <!-- Make sure `fieldcount` constant-folds for `Tuple{...}`
-->
- [x] #54288
- [x] #54067
- [x] #53715 <!-- Add read/write specialisation for IOContext{AnnIO} -->
- [x] #54289 <!-- Rework annotation ordering/optimisations -->
- [x] #53815 <!-- create phantom task for GC threads -->
- [x] #54130 <!-- inference: handle `LimitedAccuracy` in
`handle_global_assignment!` -->
- [x] #54428 <!-- Move ConsoleLogging.jl into Base -->
- [x] #54332 <!-- Revert "add unsetindex support to more copyto methods
(#51760)" -->
- [x] #53826 <!-- Make all command-line options documented in all
related files -->
- [x] #54465 <!-- typeintersect: conservative typevar subtitution during
`finish_unionall` -->
- [x] #54514 <!-- typeintersect: followup cleanup for the nothrow path
of type instantiation -->
- [x] #54499 <!-- make `@doc x` work without REPL loaded -->
- [x] #54210 <!-- attach finalizer in `mmap` to the correct object -->
- [x] #54359 <!-- Pkg REPL: cache `pkg_mode` lookup -->

Non-merged PRs with backport label:
- [ ] #54471 <!-- Actually setup jit targets when compiling
packageimages instead of targeting only one -->
- [ ] #54457 <!-- Make `String(::Memory)` copy -->
- [ ] #54323 <!-- inference: fix too conservative effects for recursive
cycles -->
- [ ] #54322 <!-- effects: add new `@consistent_overlay` macro -->
- [ ] #54191 <!-- make `AbstractPipe` public -->
- [ ] #53957 <!-- tweak how filtering is done for what packages should
be precompiled -->
- [ ] #53882 <!-- Warn about cycles in extension precompilation -->
- [ ] #53707 <!-- Make ScopedValue public -->
- [ ] #53452 <!-- RFC: allow Tuple{Union{}}, returning Union{} -->
- [ ] #53402 <!-- Add `jl_getaffinity` and `jl_setaffinity` -->
- [ ] #53286 <!-- Raise an error when using `include_dependency` with
non-existent file or directory -->
- [ ] #52694 <!-- Reinstate similar for AbstractQ for backward
compatibility -->
- [ ] #51479 <!-- prevent code loading from lookin in the versioned
environment when building Julia -->
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