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411 Commits

Author SHA1 Message Date
Erik Eckstein
eea471fe99 add the ComputeEffects pass 
The ComputeEffects pass derives escape information for function arguments and adds those effects in the function.
This needs a lot of changes in check-lines in the tests, because the effects are printed in SIL
 2022-04-22 09:50:07 +02:00
Erik Eckstein
87ae9e3a73 add passes to dump the results of EscapeInfo 
And add test files which uses the passes for verification of EscapeInfo
 2022-04-22 09:50:07 +02:00
Erik Eckstein
dc2619f33e Swift Optimizer: add EscapeInfo, a new utility for escape analysis 
It’s a replacement for the old `EscapeAnalysis`, implemented in Swift (instead of C++) and with a much simple design and implementation.
While the old EscapeAnalysis builds a connection graph, the new EscapeInfo just performs a simple def-use and use-def walk in the SIL.
The EscapeInfo does not need to analyze the whole function (like the EscapeAnalysis does), but just the relevant value which is inspected. Therefore EscapeInfo is not an `Analysis` which caches its result across optimization passes - it’s not needed.
 2022-04-22 09:50:07 +02:00
Erik Eckstein
a5ac6c2cff TypeLowering: add a recursive property to check if a type contains a RawPointer 
This is needed for the new escape analysis
 2022-04-22 09:50:07 +02:00
Erik Eckstein
b75108e70a Swift SIL: a few small addition to SmallProjectionPath 
* rename `matchesAllValueFields` -> `topMatchesAnyValueField`
* add `hasSingleClassIndirection` and `hasClassProjection`
* add `popLastClassAndValuesFromTail`
 2022-04-22 09:50:07 +02:00
Erik Eckstein
340efd9e6f Swift SIL: add MultipleValueInstructionResult.index 
And make DestructureStructInst and DestructureTupleInst a UnaryInstruction
 2022-04-22 09:50:07 +02:00
Saleem Abdulrasool
218ef587e6 Revert "Merge pull request #42242 from eeckstein/escapeinfo" 
This reverts commit c05e064cd8, reversing
changes made to c1534d5af9.

This caused a regression on Windows.
 2022-04-21 20:33:37 -07:00
Josh Soref
81d3ad76ac Spelling ast (#42463) 
* spelling: accessor

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: accommodates

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* spelling: argument

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* spelling: associated

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* spelling: availability

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* spelling: available

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* spelling: belongs

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* spelling: bookkeeping

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* spelling: building

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* spelling: clazz

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* spelling: clonable

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* spelling: closure

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* spelling: concatenated

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* spelling: conformance

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* spelling: context

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* spelling: conversion

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* spelling: correspondence

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* spelling: declarations

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* spelling: declared

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* spelling: defining

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* spelling: delayed

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* spelling: dependency

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* spelling: deployed

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* spelling: descendants

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* spelling: diagnose

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* spelling: diagnostic

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* spelling: equitable

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* spelling: evaluation

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* spelling: exclusivity

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* spelling: existence

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* spelling: existential

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* spelling: explicit

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* spelling: expressed

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* spelling: for

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* spelling: foreign

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* spelling: function

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* spelling: identifier

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* spelling: implicit

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* spelling: indices

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* spelling: information

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* spelling: instance

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* spelling: interchangeable

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* spelling: interface

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* spelling: introduced

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* spelling: invalid

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* spelling: kind-in

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* spelling: least

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* spelling: library

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* spelling: location

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* spelling: namespace

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* spelling: necessary

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* spelling: nonexistent

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* spelling: not

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* spelling: number

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* spelling: occurs

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* spelling: opaque

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* spelling: overridden

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* spelling: parameter

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* spelling: precede

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* spelling: preceding

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* spelling: property

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* spelling: protocol

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* spelling: qualified

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* spelling: recognized

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* spelling: recursively

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* spelling: references

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* spelling: relaxing

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* spelling: represented

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* spelling: request

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* spelling: requirement

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* spelling: requirements

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* spelling: retrieve

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* spelling: returned

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* spelling: satisfied

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* spelling: satisfy

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* spelling: scanner

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* spelling: siblings

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* spelling: simplified

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* spelling: something

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* spelling: source

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* spelling: specializations

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* spelling: specially

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* spelling: statement

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* spelling: stripped

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* spelling: structure

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* spelling: substitution

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* spelling: the

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* spelling: transform

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* spelling: transformed

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* spelling: transitively

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* spelling: transparent

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* spelling: typecheck

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* spelling: unknown

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* spelling: unlabeled

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* spelling: unqualified

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* spelling: whether

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* spelling: with

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* spelling: scanner

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Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>
 2022-04-21 12:57:16 -07:00
Erik Eckstein
700412b39e add the ComputeEffects pass 
The ComputeEffects pass derives escape information for function arguments and adds those effects in the function.
This needs a lot of changes in check-lines in the tests, because the effects are printed in SIL
 2022-04-21 08:45:08 +02:00
Erik Eckstein
4d5987c469 add passes to dump the results of EscapeInfo 
And add test files which uses the passes for verification of EscapeInfo
 2022-04-21 08:45:08 +02:00
Erik Eckstein
9dc3bd6ed6 Swift Optimizer: add EscapeInfo, a new utility for escape analysis 
It’s a replacement for the old `EscapeAnalysis`, implemented in Swift (instead of C++) and with a much simple design and implementation.
While the old EscapeAnalysis builds a connection graph, the new EscapeInfo just performs a simple def-use and use-def walk in the SIL.
The EscapeInfo does not need to analyze the whole function (like the EscapeAnalysis does), but just the relevant value which is inspected. Therefore EscapeInfo is not an `Analysis` which caches its result across optimization passes - it’s not needed.
 2022-04-21 08:45:08 +02:00
Erik Eckstein
3b2e409d41 TypeLowering: add a recursive property to check if a type contains a RawPointer 
This is needed for the new escape analysis
 2022-04-21 08:45:08 +02:00
Erik Eckstein
003fdec7fb Swift SIL: a few small addition to SmallProjectionPath 
* rename `matchesAllValueFields` -> `topMatchesAnyValueField`
* add `hasSingleClassIndirection` and `hasClassProjection`
* add `popLastClassAndValuesFromTail`
 2022-04-21 08:45:08 +02:00
Richard Wei
acca7cb891 Build regex parser by default. 
Currently, SwiftCompilerSources' inclusion of the regex parser depends on CMake flag `SWIFT_ENABLE_EXPERIMENTAL_STRING_PROCESSING`. However, in some scenarios we want to build the regex parser as part of the compiler _without_ building the runtime modules. This patch makes building the regex parser the default regardless of `SWIFT_ENABLE_EXPERIMENTAL_STRING_PROCESSING`. Only when the build environment is missing the string processing repo, we skip building the regex parser by setting `SWIFT_BUILD_REGEX_PARSER_IN_COMPILER` to false.
 2022-04-12 01:01:15 -07:00
Richard Wei
6022128f47 Rename compiler _RegexParser module to _CompilerRegexParser. 
Work around a build failure due to this module having the same name as the runtime _RegexParser module.
 2022-04-09 20:45:25 -07:00
Erik Eckstein
d8bf949582 BasicCalleeAnalysis: improve finding the actual called deinits of a destroy/release instruction 
* C++: add a function `getDestructors(SILType type, bool isExactType)’: if the type is a final class or `isExactType` is true, then return the one and only destructor of that class.
* swift: add `getDestructor(ofExactType type: Type)` and `getIncompleteCallees`
* swift: remove `getDestructor` from the PassContext. The API of the `calleeAnalysis` can be used instead.
 2022-04-05 20:33:23 +02:00
Erik Eckstein
2befdbe37a SimplifyGlobalValue: handle fix_lifetime instruction 2022-04-05 20:21:48 +02:00
Richard Wei
dd7610f2d2 Rename _MatchingEngine module to _RegexParser (#42081) 
As the _MatchingEngine module no longer contains the matching engine, this patch renames this module to describe its role more accurately. Because this module primarily contains the AST and the regex parsing logic, I propose we rename it to "_RegexParser".

Also renames the ExperimentalRegex module in SwiftCompilerSources to _RegexParser for consistency. This would prevent errors if sources in _RegexParser used qualified lookup with the module name.
 2022-03-31 11:13:18 -07:00
Erik Eckstein
4824d6d940 Swift SIL: improve BasicBlockRange and InstructionRange and add tests 
* add `BasicBlockRange.inclusiveRange`
* add `insert(contentsOf:)`
* add the RangeDumper pass to dump ranges for testing
* and add a test file
 2022-03-30 14:45:58 +02:00
Erik Eckstein
325a0b1f48 swift SIL: add some Instruction, Value and Type APIs 
* instructions `RefToBridgeObjectInst`, `BridgeObjectToWordInst`, `StringLiteralInst`, `ProjectBoxInst`, `InitEnumDataAddrInst`, `UncheckedTakeEnumDataAddrInst`, `InjectEnumAddrInst`
* protocols `StoringInstruction` and `EnumInstruction`
* load/store-weak/unowned instructions
* `CopyAddrInst.isTakeOfSrc/isInitializationOfDest`
* `ApplySite.calleeArgIndex/callerArgIndex`
* `SILValue.definingInstruction/definingBlock/function`
*  `Type.isReferenceCounted`
* `FunctionArgument.isExclusiveIndirectParameter`
* support `CondBranchInst` in `incomingPhiValues`
 2022-03-30 14:45:58 +02:00
Erik Eckstein
7eef54fe15 fix a bug in the ReleaseDevirtualizer pass 
The release-devirtualizer must not run on the same alloc_ref twice.
This is a very rare case, but if it happens it's a very bad thing, because it results in a double-free crash.

The fix is to detect that a dealloc_ref instruction (although it isn't "releasing"), does a memory deallocation.

Found by doing some unrelated experiments.
 2022-03-25 14:30:22 +01:00
Andrew Trick
05fb8c7930 Remove CheckedCastValue from Swift compiler sources. 2022-03-22 18:09:48 -07:00
Rintaro Ishizaki
d62d906815 [SwiftCompiler] Fix DiagnosticEngine.diagnose() 
withXXX closure should have been wrapped with reverse order.
 2022-02-25 15:27:42 -08:00
Rintaro Ishizaki
4d9b65d961 [SwiftCompiler] Add DiagnosticEngine bridging 
* 'SourceLoc' and 'CharSourceRange' bridging in Basic
* New 'AST' bridging. 'DiagID', 'DiagnosticArgument', 'DiagnosticFixIt',
  and 'DiagnosticEngine'
 2022-02-23 15:57:33 -08:00
Rintaro Ishizaki
da6814d510 [SwiftCompiler] Make BridgedArrayRef.data nullable 
ArrayRef.data() can be nullptr when the array is empty.
 2022-02-20 22:30:18 -08:00
Rintaro Ishizaki
7486cd1c21 [SwiftCompiler] Move common bridging facilities to 'Basic' 
A preparation for AST/DiagnosticEngine bridging
 2022-02-20 22:06:39 -08:00
Arnold Schwaighofer
9f2b6a4ebb Reuse _ContiguousArrayStorage<AnyObject> metadata for any class or objc generic type 
Reduces the number of _ContiguousArrayStorage metadata.

In order to support constant time bridging we do need to set the correct
metadata when we bridge to Objective-C. This is so that the type check
succeeds when bridging back from Objective-C to reuse the storage
instance rather than bridging the elements.

To support dynamically setting the `_ContiguousArrayStorage` element
type i needed to add support for optimizing `alloc_ref_dynamic`
throughout the optimizer.

Possible future improvements:
* Use different metadata such that we can disambiguate native Swift
  classes during destruction -- allowing native release rather then unknown
  release usage.
* Optimize the newly added semantic function
  getContiguousArrayStorageType

rdar://86171143
 2022-02-16 07:55:34 -08:00
Erik Eckstein
603e837a8f Swift optimizations: make isSwift51RuntimeAvailable sensitive to the resilience domain of the function. 2022-01-27 13:20:38 +01:00
Erik Eckstein
f09dfc93a9 Swift SIL: escape effects for function arguments. 
Store a list of argument effects in a function, which specify if and how arguments escape.
Such effects can be specified in the Swift source code (for details see docs/ReferenceGuides/UnderscoredAttributes.md) or derived in an optimization pass.

For details see the documentation in SwiftCompilerSources/Sources/SIL/Effects.swift.
 2022-01-25 11:29:44 +01:00
Erik Eckstein
fb00bc3b44 Swift SIL: add the SmallProjectionPath utility 
The `SmallProjectionPath` represents a path of value or address projections.
It’s used for defining argument effects for functions and for the new escape analysis.
 2022-01-25 11:29:25 +01:00
Erik Eckstein
887b5ca891 add a Swift pass which can run unit tests. 
The `run-unit-tests` is a "pseudo" pass which is invoked from sil-opt and runs all the unit tests, implemented in Swift.
This is done from the `swift-unit-tests.sil` lit test.
 2022-01-25 11:29:25 +01:00
Erik Eckstein
93f5d9f176 swift SIL: Type.getStructFields -> Type.getNominalFields 
To be able to get class fields as well as struct fields
 2022-01-25 11:29:25 +01:00
Erik Eckstein
75da7d9d3e Swift SIL: add a StringParser utility for simple parsing tasks 2022-01-25 11:29:25 +01:00
Max Desiatov
1f53563780 libswift: remove Instruction.mayReadRefCount 2022-01-19 18:51:19 +00:00
Max Desiatov
40e805de11 libswift: simplify ReleaseDevirtualizer.swift 2022-01-19 18:51:19 +00:00
Max Desiatov
d7144c0046 libswift: implement isFieldOnlyNonTrivialField 2022-01-19 18:51:19 +00:00
Max Desiatov
848fa70529 libswift: reimplement Instruction helpers in Swift 2022-01-19 18:51:19 +00:00
Erik Eckstein
cec4b82b39 swift SIL: add some SIL type related bridging 
* `Function.argumentTypes` and `Function.resultType`
* `Type.isNominal`, `Type.isClass`, `Type.isTuple`, `Type.isStruct` and `Type.isEnum`
* `Type.getFieldIndexOfNominal`
* `Type.getFieldTypeOfNominal`
* `Type.tupleElements`
* `Type.description` for better debugging

# Conflicts:
#	SwiftCompilerSources/Sources/SIL/Type.swift
#	SwiftCompilerSources/Sources/SIL/Utils.swift
#	SwiftCompilerSources/Sources/SIL/Value.swift
#	include/swift/SIL/SILBridging.h
#	lib/SIL/Utils/SILBridging.cpp
 2022-01-19 18:51:19 +00:00
Max Desiatov
b964dba177 libswift: implement ReleaseDevirtualizer in Swift 2022-01-19 18:51:19 +00:00
Max Desiatov
7d961001d3 libswift: bridge more functions from SILBuilder 2022-01-19 18:51:18 +00:00
Max Desiatov
7eb3bdd746 libswift: add SubstitutionMap to Swift code 2022-01-19 18:51:18 +00:00
Max Desiatov
f2aefad246 libswift: clean up SIL/Function.swift formatting 2022-01-19 18:51:18 +00:00
Max Desiatov
c780969f79 libswift: clean up SIL/Type.swift formatting 2022-01-19 18:51:18 +00:00
Max Desiatov
196140ab95 libswift: clean up SIL/Utils.swift formatting 2022-01-19 18:51:18 +00:00
Max Desiatov
a0a2d8887b libswift: clean up Instruction.swift formatting 2022-01-19 18:51:18 +00:00
Erik Eckstein
82ad1fa5a1 CalleeAnalysis: add getDestructors(destroyInst: Instruction) 2022-01-12 15:47:16 +01:00
Erik Eckstein
31143bf79c Swift Optimizer: add the Builder.insert(after: Instruction ...) utility 
For inserting new instruction after another instruction. This is especially interesting if the insertion point is a terminator.
In this case, the new instruction(s) are inserted in the successor block(s).
 2022-01-12 15:47:16 +01:00
Erik Eckstein
e028239cc2 Swift Optimizer: add AllocRefInstBase.setIsStackAllocatable 2022-01-12 15:47:16 +01:00
Erik Eckstein
e152b2cb4a Swift Optimizer: add the fixStackNesting utility in PassContext 
This bridges to the StackNesting utility in C++
 2022-01-12 15:47:16 +01:00
Erik Eckstein
a24b17a333 Swift Optimizer: add the dominator and post-dominator tree analysis 2022-01-12 15:47:16 +01:00