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51 Commits

Author SHA1 Message Date
Hamish Knight
a64ba23d7b [CS] NFC: Store ContextualTypeInfo in SyntacticElementTarget 
Move the contextual type locator onto
ContextualTypeInfo, and consolidate the separate
fields in SyntacticElementTarget into storing a
ContextualTypeInfo. This then lets us plumb down
the locator for the branch contextual type of an
if/switch expression from the initial constraint
generation, rather than introducing it later. This
should be NFC.
 2023-07-26 16:46:54 +01:00
Evan Wilde
f3ff561c6f [NFC] add llvm namespace to Optional and None 
This is phase-1 of switching from llvm::Optional to std::optional in the
next rebranch. llvm::Optional was removed from upstream LLVM, so we need
to migrate off rather soon. On Darwin, std::optional, and llvm::Optional
have the same layout, so we don't need to be as concerned about ABI
beyond the name mangling. `llvm::Optional` is only returned from one
function in
```
getStandardTypeSubst(StringRef TypeName,
                     bool allowConcurrencyManglings);
```
It's the return value, so it should not impact the mangling of the
function, and the layout is the same as `std::optional`, so it should be
mostly okay. This function doesn't appear to have users, and the ABI was
already broken 2 years ago for concurrency and no one seemed to notice
so this should be "okay".

I'm doing the migration incrementally so that folks working on main can
cherry-pick back to the release/5.9 branch. Once 5.9 is done and locked
away, then we can go through and finish the replacement. Since `None`
and `Optional` show up in contexts where they are not `llvm::None` and
`llvm::Optional`, I'm preparing the work now by going through and
removing the namespace unwrapping and making the `llvm` namespace
explicit. This should make it fairly mechanical to go through and
replace llvm::Optional with std::optional, and llvm::None with
std::nullopt. It's also a change that can be brought onto the
release/5.9 with minimal impact. This should be an NFC change.
 2023-06-27 09:03:52 -07:00
Pavel Yaskevich
2ee646f47b [ConstraintSystem] NFC: Generalize DefaultClosureType constraint 
This constraint is useful in more places than closures because
it gives a way to provide a "fallback type" without it having
effect on inference.
 2023-06-16 11:15:15 -07:00
Pavel Yaskevich
1691f32d84 [CSGen] Type-check capture list together with closure body 
Delay constraint generation for capture list until body of
the associated closure is resolved. This means that we can
unify capture checking with that of regular pattern bindings
for multi-statement closures.
 2023-03-17 15:22:38 -07:00
Hamish Knight
2976edbe20 [CS] Rename SolutionApplicationTarget -> SyntacticElementTarget 2023-03-06 20:54:06 +00:00
Andrew Trick
185e6fabd5 Add TypeBase::isArrayType helper API. 
This is also needed in SIL diagnostics, not just Sema diagnostics,
because implicit Array conversion generates special SIL patterns.
 2023-02-27 21:51:17 -08:00
Pavel Yaskevich
6ea82b21e3 Merge pull request #63196 from xedin/connect-captures-to-closure 
[CSGen] Captures should always be connected to their closure
 2023-01-26 11:03:06 -08:00
Ben Barham
3ec878d918 Update llvm::Optional API uses 
Use the std-equivalent names as the LLVM ones are now deprecated
(eventually `llvm::Optional` will disappear):
  - `getValue` -> `value`
  - `getValueOr` -> `value_or`
  - `hasValue` -> `has_value`

Follow up from ab1b343dad and
7d8bf37e5e with some missing cases.
 2023-01-25 16:28:10 -08:00
Pavel Yaskevich
60720f4e07 [CSGen] Captures should always be connected to their closure 
Otherwise it might be possible (once references are not resolved
eagerly for example) to get a situation where closure is solved
before captures are.
 2023-01-24 10:43:29 -08:00
Erik Eckstein
8dbbfabea5 AST: add debug locations for generated IntegerLiteralExprs 2023-01-02 13:52:21 +01:00
Doug Gregor
402ba1492f Set closure descriminators via a request. 
Rather than set closure discriminators in both the parser (for explicit
closures) and then later as part of contextualizing closures (for
autoclosures), do so via a request that sets all of the discriminators
for a given context.
 2022-12-19 15:23:45 -08:00
Pavel Yaskevich
46d14cf645 [unittest] NFC: Adjust Sema unit tests to check result of generateConstraints 2022-04-28 18:02:19 -07:00
Josh Soref
4c77c59269 Spelling sema (#42474) 
* spelling: accessibility

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Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>
 2022-04-20 15:12:46 -07:00
Slava Pestov
8c47cd75fd Sema: The primary associated type list references existing associated types instead of declaring new ones 2022-04-03 22:03:49 -04:00
Pavel Yaskevich
15772e4a72 [CSApply] Ajust expression rewriter to handle casts without reprs 
Implicit casts are allowed to provide cast type directly without
a type repr, adjust solution application logic to handle this just
like constraint generator does. Also fix a couple of places where
declaration context from constraint system was used instead
of one associated with the expression rewriter.
 2022-03-23 00:18:55 -07:00
Pavel Yaskevich
37da96092c [CSGen] Don't expect implicit casts to have type reprs 
Implicit casts are allowed to be constructed with a type, instead
of a type repr. Constraint generation should honor that, and fallback
to using cast type when repr is was not given.
 2022-03-22 13:19:32 -07:00
Alex Hoppen
fe7878ecce [Serialization] Improve module loading performance 
When looking for a Swift module on disk, we were scanning all module search paths if they contain the module we are searching for. In a setup where each module is contained in its own framework search path, this scaled quadratically with the number of modules being imported. E.g. a setup with 100 modules being imported form 100 module search paths could cause on the order of 10,000 checks of `FileSystem::exists`. While these checks are fairly fast (~10µs), they add up to ~100ms.

To improve this, perform a first scan of all module search paths and list the files they contain. From this, create a lookup map that maps filenames to the search paths they can be found in. E.g. for
```
searchPath1/
  Module1.framework

searchPath2/
  Module1.framework
  Module2.swiftmodule
```
we create the following lookup table
```
Module1.framework -> [searchPath1, searchPath2]
Module2.swiftmodule -> [searchPath2]
```
 2021-12-14 12:44:13 +01:00
Pavel Yaskevich
5ac8bce1c4 [Sema] NFC: Add some unit-tests for solution filtering 2021-10-18 14:54:16 -07:00
Pavel Yaskevich
88ad3b7955 Merge pull request #39412 from Jumhyn/sr-15192 
Replace inferrable types before binding literals to contextual type
 2021-10-05 09:45:24 -07:00
Meghana Gupta
f458d9b490 Fix unnecessary one-time recompile of stdlib with -enable-ossa-flag (#39516) 
* Fix unnecessary one-time recompile of stdlib with -enable-ossa-flag

This includes a bit in the module format to represent if the module was
compiled with -enable-ossa-modules flag. When compiling a client module
with -enable-ossa-modules flag, all dependent modules are checked for this bit,
if not on, recompilation is triggered with -enable-ossa-modules.

* Updated tests
 2021-10-04 18:46:40 -07:00
Frederick Kellison-Linn
00004482c9 Add unit tests for placeholder type inference 2021-10-01 12:45:56 -04:00
zoecarver
d706863a52 [cxx-interop][nfc] Add a ClangImporter request zone. 
This is just the boilerplate for adding a request zone. I haven't actually added any requrests in this commit.
 2021-09-28 17:08:48 -07:00
Victoria Mitchell
ff766fce37 add ASTContext symbol-graph arg in unit tests 2021-07-01 09:05:02 -06:00
Pavel Yaskevich
038761f795 [TypeChecker] NFC: Add a unittest for closure inference with optional contextual type 2021-06-25 08:33:14 -07:00
Pavel Yaskevich
8dc2251a7e [CSBindings] NFC: Add a unit test for closure result inference 
Make sure that `Void` doesn't get attempted twice if it was
inferred directly or transitively.
 2021-06-17 14:11:59 -07:00
Pavel Yaskevich
51ff12d06e [ConstraintLocator] Augment ContextualType element to carry its purpose 
Having purpose attached to the contextual type element makes it much
easier to diagnose contextual mismatches without involving constraint
system state.
 2021-04-26 09:51:21 -07:00
Nathan Hawes
c57c403ffa [ConstraintSystem] Record parameter bindings in solutions (NFC) 
This saves us from needing to re-match args to params in CSApply and is also
useful for a forthcoming change migrating code completion in argument position
to use the solver-based typeCheckForCodeCompletion api.

rdar://76581093
 2021-04-16 18:32:06 +10:00
Pavel Yaskevich
d310f37ffc [CSBindings] Infer transitive protocols only for unresolved member base 
Nothing besides static member refs on protocols feature is currently
using transitive protocols, so instead of trying to infer them on every
step let's do that only for base type of a dot-syntax reference when
there are no other bindings for it.
 2021-03-30 13:39:24 -07:00
Pavel Yaskevich
56c96c6b50 [CSBindings] Use all equivalence chain members while interring transitive protocols 
Currently inference logic only checked direct equivalence class members
associated with a "work-in-progress" type variable, but each member can
have local equivalences as well that need to be accounted for.

Resolves: rdar://75978086
 2021-03-30 13:39:12 -07:00
Pavel Yaskevich
1817ddcc5e [CSBindings] Always finalize binding set unless explicitly asked not to 2021-02-24 10:38:31 -08:00
Pavel Yaskevich
fbc11f410a [ConstraintSystem] Implement incremental binding computation 2021-02-24 10:37:20 -08:00
Pavel Yaskevich
df7af0078f [CSBindings] Separate inference storage from final product usable by the solver 
`PotentialBindings` lost most of its responsibilities,
and are no longer comparable. Their main purpose now
is binding and metadata tracking (introduction/retraction).

New `BindingSet` type is something that represents a set
of bindings at the current step of the solver.
 2021-02-24 10:37:20 -08:00
Pavel Yaskevich
5b55ea1312 [CSGen] Use new UnresolvedMemberChainBase constraint 2021-02-23 11:33:10 -08:00
Pavel Yaskevich
72888ca29b [ConstraintSystem] NFC: Extract PotentialBindings and auxiliary struct from ConstraintSystem 
This opens up a posibility of using `PotentialBindings`
in `ConstraintGraphNode` and other places in `ConstraintGraph`.
 2021-01-15 15:03:54 -08:00
Pavel Yaskevich
03b6b41774 [CSBindings] NFC: Don't pass constraint system as an argument to infer* methods 
`PotentialBindings` already reference the constraint system they
belong to, so there is no need to pass it as an argument to inference
methods.
 2021-01-12 00:53:46 -08:00
Pavel Yaskevich
1ed2f62e88 [unittests/Sema] NFC: Add tests for literal requirement inference/coverage 
Test that literal requirements are:

- inferred correctly (both direct and transitive);
- covered by direct/transtiive bindings.
 2021-01-05 11:52:48 -08:00
Pavel Yaskevich
25fff2c4f2 [unittests/Sema] NFC: Adjust binding inference test to reflect binding set changes 2021-01-05 08:56:59 -08:00
Evan Wilde
6dac520b66 NFC: Fix signed unsigned comparison warnings 
This patch fixes the unsigned/signed comparison warnings in the
unittests caused by comparing an unsigned integer with the signed
integer literal. The offending signed integer literals have been
replaced with unsigned integer literals.
 2020-12-10 16:02:33 -08:00
Frederick Kellison-Linn
6b0f5da001 [Unit tests] Add unit tests for optional lookup behavior 2020-12-04 12:11:10 -05:00
Pavel Yaskevich
a0a37d2a71 Merge pull request #34356 from xedin/record-trailing-even-if-types-are-equal 
[ConstraintSystem] Record trailing choice match choice when arguments…
 2020-10-19 16:20:00 -07:00
Pavel Yaskevich
340d1e843a [ConstraintSystem] Record trailing choice match choice when arguments/result are equivalent to applied function 2020-10-19 13:55:55 -07:00
Pavel Yaskevich
9598f19848 [unittest/Sema] Cover transitive protocol inference with unit tests 2020-10-15 16:27:36 -07:00
Pavel Yaskevich
a3c3981a68 [unittest/Sema] NFC: Add a way to create a protocol with a given name and parent type 2020-10-15 16:27:36 -07:00
Pavel Yaskevich
a243831122 [unittest/Sema] Add a test-case for a single hop protocol requirement inference 
In situations like:

`$T0 <convertible> $T1`
`$T1 <conforms to> P`

`$T0` should know about `P` as a transitive protocol requirement.
 2020-10-15 16:27:35 -07:00
Pavel Yaskevich
1aecea17e4 [unittest/Sema] Add a helper method to infer bindings for a given type variable 
This mimics what `determineBestBindings` does but without sorting.
 2020-10-15 16:27:35 -07:00
Pavel Yaskevich
fde1af756d [unittest/Sema] Use default target triple to fix Windows build 2020-10-13 13:52:24 -07:00
Pavel Yaskevich
6e470f5fcd [unittest/Sema] NFC: Switch to use AttributedImport instead of deprecated ImportedModuleDesc 2020-10-13 00:12:09 -07:00
Pavel Yaskevich
dc7c9c2bfa [unittests/Sema] Add a simple integer literal type inference test 2020-10-12 18:57:20 -07:00
Pavel Yaskevich
b2c31c394b [unittests/Sema] Add an ability to retrieve stdlib types by name 2020-10-12 18:57:20 -07:00
Pavel Yaskevich
0b22d91c94 [unittests] Extend Sema testing fixture to load stdlib (+ shims) 
Setup module importers, load stdlib, establish separate testing
module and load a single main file there which imports standard
library.
 2020-10-12 18:57:20 -07:00