typeintersect: conservative typevar subtitution during finish_unionall
#54465
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This commit adds a nothrow path for type instantiation, which eliminates the bad `Union` elements from the result rather than returns the bottom type. close JuliaLang#54404
N5N3
added
types and dispatch
|
This looks like a good direction. But it seems like we still may be left with some ambiguity of whether the intersection/application returned Bottom exactly, or whether it failed, which could have minor implications? I think we should merge this, as it is clearly an improvement already. Should we later consider using a different sentinel for the failure (eg an Exception object or a NULL)? |
Yes, that should also help to remove the special handling of Vararg Tuple. |
vtjnash
reviewed
May 16, 2024
| } | ||
| JL_CATCH { | ||
| *btemp->ub = jl_substitute_var_nothrow(iub, vb->var, varval); | ||
| if (*btemp->ub == NULL) | ||
| res = jl_bottom_type; |
There was a problem hiding this comment.
Does *btemp->ub need to be assigned non-NULL here also?
Comment on lines
+2007
to
+2008
| JL_TRY { | ||
| check_datatype_parameters(tn, iparams, ntp); |
There was a problem hiding this comment.
Looks like it would be an easy cleanup now to remove this try/catch and thread the nothrow into this call too
Comment on lines
+2403
to
+2411
| if (pi == NULL) { | ||
| if (i == ntp-1 && jl_is_vararg(elt)) { | ||
| t = NULL; | ||
| break; | ||
| } | ||
| else { | ||
| pi = jl_bottom_type; | ||
| } | ||
| } |
Comment on lines
+2443
to
+2444
| JL_TRY { | ||
| lb = inst_type_w_(ua->var->lb, env, stack, check, 0); |
There was a problem hiding this comment.
Why do you use try/catch instead of passing nothrow here?
There was a problem hiding this comment.
As we don't want a imprecise lb or invarient parameter. It seems bad to allow Val{Union{Int,Complex{T}}} to be instantiated as Val{Int}.
Though perhaps adding another level of control would be better.
Comment on lines
+2521
to
+2522
| if (v->N) // This branch should never throw. | ||
| N = inst_type_w_(v->N, env, stack, check, 0); |
There was a problem hiding this comment.
FWIW, this branch does potentially throw
julia> Tuple{Vararg{Int,Union{N,Complex{N}}}} where N
NTuple{Union{Complex{N}, N}, Int64} where N
julia> ans{String}
ERROR: TypeError: in Complex, in T, expected T<:Real, got Type{String}
Stacktrace:
[1] top-level scope
@ REPL[6]:1
There was a problem hiding this comment.
My bad, shouldn't assume invalid type don't exist. (IIRC, only Int and TypeVar with no constraint could be used as vararg length)
Comment on lines
+2546
to
+2555
| JL_TRY { | ||
| jl_value_t *pi = inst_type_w_(elt, env, stack, check, 0); | ||
| iparams[i] = pi; | ||
| bound |= (pi != elt); | ||
| } | ||
| JL_CATCH { | ||
| if (!nothrow) jl_rethrow(); | ||
| t = NULL; | ||
| } | ||
| if (t == NULL) break; |
There was a problem hiding this comment.
Similarly here, why does it use try/catch instead of setting nothrow directly?
N5N3
added a commit
that referenced
this pull request
May 19, 2024
…ation (#54514) Adopt suggestions from #54465 (review) and fix various added regession & residual MWE.
59 tasks
KristofferC
pushed a commit
that referenced
this pull request
May 22, 2024
…ation (#54514) Adopt suggestions from #54465 (review) and fix various added regession & residual MWE. (cherry picked from commit af545b9)
KristofferC
pushed a commit
that referenced
this pull request
May 23, 2024
…ation (#54514) Adopt suggestions from #54465 (review) and fix various added regession & residual MWE. (cherry picked from commit af545b9)
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 -->
KristofferC
removed
the
backport 1.11
KristofferC
added a commit
that referenced
this pull request
May 30, 2024
Backported PRs: - [x] #54010 <!-- Overload `Base.literal_pow` for `AbstractQ` --> - [x] #54143 <!-- Fix `make install` from tarballs --> - [x] #54151 <!-- LinearAlgebra: Correct zero element in `_generic_matvecmul!` for block adj/trans --> - [x] #54233 <!-- set MAX_OS_WRITE on unix --> - [x] #54251 <!-- fix typo in gc_mark_memory8 when chunking a large array --> - [x] #54363 <!-- typeintersect: fix another stack overflow caused by circular constraints --> - [x] #54497 <!-- Make TestLogger thread-safe (introduce a lock) --> - [x] #53796 <!-- Add a missing doc --> - [x] #54465 <!-- typeintersect: conservative typevar subtitution during `finish_unionall` --> - [x] #54514 <!-- typeintersect: followup cleanup for the nothrow path of type instantiation --> Need manual backport: - [ ] #52505 <!-- fix alignment of emit_unbox_store copy --> - [ ] #53373 <!-- fix sysimage-native-code=no option with pkgimages --> - [ ] #53815 <!-- create phantom task for GC threads --> - [ ] #53984 <!-- Profile: fix heap snapshot is valid char check --> - [ ] #54276 <!-- Fix solve for complex `Hermitian` with non-vanishing imaginary part on diagonal --> Contains multiple commits, manual intervention needed: - [ ] #52854 <!-- Change to streaming out the heap snapshot data --> - [ ] #53218 <!-- Fix interpreter_exec.jl test --> - [ ] #53833 <!-- Profile: make heap snapshots viewable in vscode viewer --> - [ ] #54303 <!-- LinearAlgebra: improve type-inference in Symmetric/Hermitian matmul --> - [ ] #52694 <!-- Reinstate similar for AbstractQ for backward compatibility --> Non-merged PRs with backport label: - [ ] #54471 <!-- Actually setup jit targets when compiling packageimages instead of targeting only one --> - [ ] #53452 <!-- RFC: allow Tuple{Union{}}, returning Union{} --> - [ ] #51479 <!-- prevent code loading from lookin in the versioned environment when building Julia -->
KristofferC
removed
the
backport 1.10
lazarusA
pushed a commit
to lazarusA/julia
that referenced
this pull request
Jul 12, 2024
…ll` (JuliaLang#54465) This commit adds a nothrow path for type instantiation, which eliminates the bad `Union` elements from the result rather than returns the bottom type. close JuliaLang#54404
lazarusA
pushed a commit
to lazarusA/julia
that referenced
this pull request
Jul 12, 2024
…ation (JuliaLang#54514) Adopt suggestions from JuliaLang#54465 (review) and fix various added regession & residual MWE.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This commit adds a nothrow path for type instantiation, which eliminates the bad
Unionelements from the result rather than returns the bottom type.close #54404