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286 Commits

Author SHA1 Message Date
Erik Eckstein
3229749257 SwiftCompilerSources: move some private utilities of passes into OptUtils 
* `var Function.initializedGlobal`
* `func getGlobalInitialization`

and add `var CollectionLikeSequence.singleElement`
 2024-01-10 09:34:01 +01:00
Erik Eckstein
bc99986cf9 SIL: add a dependency token operand to global_addr 
Optionally, the dependency to the initialization of the global can be specified with a dependency token `depends_on <token>`.
This is usually a `builtin "once"` which calls the initializer for the global variable.
 2024-01-10 09:33:58 +01:00
nate-chandler
7365f9f36b Merge pull request #70774 from nate-chandler/nfc/20240108/1/deinit-barrier-component-predicates 
[NFC] SIL: Clarified deinit barrier APIs.
 2024-01-08 23:11:38 -08:00
Nate Chandler
77fd37be99 [NFC] SIL: Renamed maySynchronize. 
Dropped the NotConsideringSideEffects suffix.
 2024-01-08 13:35:20 -08:00
Andrew Trick
264cbaea42 Add mark_dependence [nonescaping] flag. 
The dependent 'value' may be marked 'nonescaping', which guarantees that the
lifetime dependence is statically enforceable. In this case, the compiler
must be able to follow all values forwarded from the dependent 'value', and
recognize all final (non-forwarded, non-escaping) use points. This implies
that `findPointerEscape` is false. A diagnostic pass checks that the
incoming SIL to verify that these use points are all initially within the
'base' lifetime. Regular 'mark_dependence' semantics ensure that
optimizations cannot violate the lifetime dependence after diagnostics.
 2024-01-04 14:47:35 -08:00
Andrew Trick
2128c21106 Migrate SwiftCompilerSources to FunctionConvention. 
Layers:
- FunctionConvention: AST FunctionType: results, parameters
- ArgumentConventions: SIL function arguments
- ApplyOperandConventions: applied operands

The meaning of an integer index is determined by the collection
type. All the mapping between the various indices (results,
parameters, SIL argument, applied arguments) is restricted to the
collection type that owns that mapping. Remove the concept of a
"caller argument index".
 2024-01-03 12:24:50 -08:00
Meghana Gupta
ba4cedd5e5 Merge pull request #70582 from meg-gupta/resultdependsoninsil 
Make _resultDependsOn/_resultDependsOnSelf available in SIL
 2024-01-02 10:49:20 -08:00
Erik Eckstein
85be96354f SimplifyBuiltin: fix simplification of is_same_metatype with dynamic_self types 
Dynamic self types are not the same as non-dynamic self types.

Fixes a miscompile with dynamic self type comparisons.

rdar://119943508
 2024-01-02 09:23:42 +01:00
Meghana Gupta
3c56a7a88e Bridge hasResultDependsOnSelf() 2023-12-29 02:06:15 -08:00
Meghana Gupta
334ede0b01 Bridge hasResultDependsOn() 2023-12-29 02:06:12 -08:00
Andrew Trick
7dc3d72483 Merge pull request #70485 from atrick/bridge-util 
[NFC] Bridging and utilities for SwiftCompilerSources required by lifetime dependence utilities.
 2023-12-19 13:07:45 -08:00
Andrew Trick
d0b47b878c SwiftCompilerSources: add CollectionLikeSequence.contains() 2023-12-19 02:05:16 -08:00
Andrew Trick
3f0d309ed4 SwiftCompilerSources: add Sequence.walk() 2023-12-19 02:05:16 -08:00
Andrew Trick
53d3c63ef7 [SIL] add Value.hasLifetime 2023-12-19 02:05:16 -08:00
Andrew Trick
ed53ab764a [SIL] add Value.lifetimeEndingUses 2023-12-19 02:05:16 -08:00
Andrew Trick
2a9aef9eb8 [SIL] add BeginApplyInst.token 2023-12-19 02:05:16 -08:00
Andrew Trick
0ddf2a8514 [SIL] add BasicBlock.singleSuccessor 2023-12-19 02:05:16 -08:00
Andrew Trick
c1f0f06907 [SIL] Add FunctionConvention.swift 
Bridge information about the AST function type that does not require a
SIL function body.

Support querying the function type's ResultInfo.
 2023-12-18 09:43:18 -08:00
Andrew Trick
7a18dd46d5 [SIL] Add Argument.incomingOperand(inPredecessor:) 2023-12-18 09:43:10 -08:00
Andrew Trick
3407ccd693 [SIL] bridge Argument.isReborrow 2023-12-18 09:28:23 -08:00
Andrew Trick
b637f06acd [SIL] Bridge findPointerEscape() and fix OnoneSimplifyable 
Do not bridge the hasPointerEscape flag until it is implemented.
 2023-12-18 09:16:55 -08:00
Erik Eckstein
84e06322b9 SwiftCompilerSources: bridge_object_to_word is not a ForwardingInstruction 
Fix this mismatch between C++ SIL and swift SIL.
Fixes a crash in begin_borrow simplification
Also add an assert to catch such cases.

rdar://119763595
 2023-12-18 11:08:22 +01:00
Erik Eckstein
60baf111ff Remove Type.selfOrAnyFieldHasValueDeinit 
It's not needed anymore
 2023-12-13 20:03:02 +01:00
Erik Eckstein
e652f2c92e SIL: add the alloc_vector and vector instructions 
* `alloc_vector`: allocates an uninitialized vector of elements on the stack or in a statically initialized global
* `vector`: creates an initialized vector in a statically initialized global
 2023-12-09 18:49:55 +01:00
Erik Eckstein
9514b3450c SwiftCompilerSources: add some context APIs 
* `Context.moduleIsSerialized`
* `Context.getBuiltinIntegerType`
* `Instruction.move(before:)`
 2023-12-09 18:48:50 +01:00
Erik Eckstein
0bd6034270 SwiftCompilerSources: add some Builder APIs 
* `createAddressToPointer`
* `createLoadBorrow`
 2023-12-09 18:48:50 +01:00
Erik Eckstein
bfeb2128cb remove default value for the keepUnique argument of Builder.createEndCOWMutation 
This avoids bugs because the default value false is sometimes not the right choice.
NFC
 2023-12-06 15:40:08 +01:00
eeckstein
10ff55b2b3 Merge pull request #70155 from eeckstein/refactoring 
MemoryLifetimeVerifier: use CalleeCache instead of AliasAnalysis
 2023-12-04 08:53:59 +01:00
Erik Eckstein
0897d8a720 MemoryLifetimeVerifier: use CalleeCache instead of AliasAnalysis 
To verify if a function may read from an indirect argument, don't use AliasAnalysis.
Instead use the CalleeCache to get the list of callees of an apply instruction.
Then use a simple call-back into the swift Function to check if a callee has any relevant memory effect set.

This avoids a dependency from SIL to the Optimizer.
It fixes a linker error when building some unit tests in debug.
 2023-12-01 19:20:18 +01:00
Erik Eckstein
80ace58104 SwiftCompilerSources: split SIL/Utils.swift into multiple files 2023-12-01 19:20:13 +01:00
Erik Eckstein
ec4c815506 SwiftCompilerSources: move WalkUtils and AccessUtils from the Optimizer module to the SIL module 
Those utilities are conceptually part of the SIL definition.
 2023-12-01 19:20:13 +01:00
zoecarver
69498e2f2e [opt] Add three new perf annotations: @_noRuntime, @_noExistential, and @_noObjCBridging. 2023-12-01 09:13:24 -07:00
Erik Eckstein
6aaf2005d3 SwiftCompilerSources: remove the BeginBorrowInst.endBorrows API 
Using this API almost certainly indicates a bug, because it neglects re-borrows.
 2023-11-27 16:20:47 +01:00
Erik Eckstein
e4d227a5fb SwiftCompilerSources: add StoreBorrowInst and BorrowIntroducingInstruction 
`BorrowIntroducingInstruction` is a protocol to which all instructions conform which start a borrow-scope which must be ended by `EndBorrowInst` instructions: `begin_borrow`, `load_borrow` and `store_borrow`
 2023-11-27 16:20:47 +01:00
eeckstein
67ebbee39e Merge pull request #69955 from eeckstein/deinit-devirtualizer 
Optimizer: de-virtualize deinits of non-copyable types
 2023-11-27 12:41:49 +01:00
Erik Eckstein
37c715c58c SwiftCompilerSources: add EndLifetimeInst 2023-11-27 09:21:33 +01:00
Erik Eckstein
6f6c0a5608 SwiftCompilerSources: add a few enum related APIs in Type and Builder 
* `Type.getEnumCases`
* `Builder.createUncheckedTakeEnumDataAddr`
* `Builder.createSwitchEnumAddr`
 2023-11-27 09:21:33 +01:00
Erik Eckstein
fc534e1c28 SwiftCompilerSources: better APIs for handling resilient nominal types 
* add `NominalTypeDecl.isResilient`

* make the return type of `Type.getNominalFields` optional and return nil in case the nominal type is resilient.
This forces users of this API to think about what to do in case the nominal type is resilient.
 2023-11-27 09:21:33 +01:00
Erik Eckstein
7752fbfdf9 SIL: add Type.selfOrAnyFieldHasValueDeinit 
Implemented by adding a recursive property in TypeLowering
 2023-11-27 09:21:32 +01:00
Erik Eckstein
9bbee4411b SwiftCompilerSources: consider indirect error results in Function.numArguments 2023-11-27 08:51:12 +01:00
Erik Eckstein
3bfabf6e8a SimplifyBeginBorrow: don't remove begin_borrow instructions which have the [point_escape] flag set. 2023-11-14 12:26:23 +01:00
Erik Eckstein
95c83e9899 Swift SIL: add BeginBorrowInst.isLexical 2023-11-13 20:18:07 +01:00
Erik Eckstein
0509a056fb SwiftCompilerSources: improve APIs for UseList 
Make filter APIs for UseList chainable by adding them to Sequence where Element == Operand

For example, it allows to write:
```
let singleUse = value.uses.ignoreDebugUses.ignoreUsers(ofType: EndAccessInst.self).singleUse
```

Also, add `UseList.getSingleUser(notOfType:)`
 2023-11-13 20:18:07 +01:00
Erik Eckstein
eb597cb6d8 Swift SIL: add a few ownership APIs to ForwardingInstruction 
* `canForwardGuaranteedValues`
* `canForwardOwnedValues`
* `setForwardingOwnership`
* `Operand.canAccept(ownership:)`
 2023-11-13 20:18:07 +01:00
Slava Pestov
05ccd9734c SIL: Introduce ThrowAddrInst 2023-10-31 16:58:54 -04:00
Hamish Knight
2ac0860716 [AST] Remove BridgedVarDecl + BridgedNominalTypeDecl duplicates 
These are now stamped out by the ASTBridgingWrappers.
 2023-10-30 23:49:56 +00:00
Hamish Knight
cae5d33368 [AST] Move BridgedNominalTypeDecl + BridgedVarDecl to ASTBridging 
And renaming OptionalBridgedVarDecl to
BridgedNullableVarDecl for consistency with the
existing nullable AST node wrappers.
 2023-10-30 23:49:55 +00:00
Hamish Knight
ce23252a3f [Basic] Improve some bridging APIs 
Improve APIs for BridgedStringRef,
BridgedOwnedString, and BridgedSourceLoc.
 2023-10-30 23:49:53 +00:00
Erik Eckstein
b6938475b9 Optimizer: add simplification for the convert_escape_to_noescape instruction 
Including the required bridging stuff.

  %2 = thin_to_thick_function %1 to $() -> ()
  %3 = convert_escape_to_noescape %2 : $() -> () to $@noescape () -> ()
->
  %3 = thin_to_thick_function %1 to $@noescape () -> ()
 2023-10-27 10:47:07 +02:00
Andrew Trick
ca7253a25c Add the @_unsafeNonEscapableResult function 
This will allow NonEscapable types to be returned from a function.
 2023-10-17 12:44:31 -07:00