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66 Commits

Author SHA1 Message Date
Andrew Trick
ef940c5297 Redesign gatherBorrowIntroducers to return BeginBorrowValues. 
This avoids a lot of confusion because the callers expect this type. Fixing it just required some redundancy and
bridging in the EnclosigValues implementation.
 2024-03-05 17:08:13 -08:00
Erik Eckstein
8137adf89e SwiftCompilerSources: support Undef.parentFunction and PlaceholderValue.parentFunction 
After support in the C++ SIL, we can implement parentFunction for those values in swift, too.
It simplifies a few things.
 2024-03-01 09:07:12 +01:00
Andrew Trick
a7e4e900c4 Fix LifetimeDependenceUtils to use OwnershipTransitionInstruction 2024-02-26 00:20:46 -08:00
Meghana Gupta
12ac8042ab Handle YieldInst in LifetimeDependenceUtils 2024-02-19 15:28:04 -08:00
Andrew Trick
41043948c1 LifetimeDependenceDiagnostics: enable mutably borrowed lifetimes. 
This allows basic prototyping. A separate analysis will ensure no
mutation of the original value during the borrow.
 2024-02-15 02:39:34 -08:00
Andrew Trick
68037faa61 LifetimeDependenceScopeFixup: handle nested access 
After extending access scopes, rewrite the mark_depenendence to be on
the outermost scope.
 2024-02-13 22:22:28 -08:00
Andrew Trick
f0b04004ff LifetimeDepenenceUtils; improve VariableIntroducerUseDefWalker 
Stop at formal access to a mutable variable.
 2024-02-13 20:57:02 -08:00
Andrew Trick
1cdf9d56ac LifetimeDefUseWalker handles inherited dependencies. 
This is needed when we don't insert mark_dependence.
 2024-02-12 20:05:24 -08:00
Andrew Trick
2e7c29cdf5 Restrict findSingleInitializer @out arguments. 
The client should handle @in/@inout arguments differently.
 2024-02-12 20:03:38 -08:00
Andrew Trick
af39b0fb1f LifetimeDependenceUtils improvements 
Improve noescape function handling. Use the mayEscape API.

Improve handling of @_unsafeNonescapableResult.

Improve handling of initialized scopes. Use findSingleInitializer.
 2024-02-12 09:57:14 -08:00
Andrew Trick
ac457abab9 LifetimeDependenceUseDefWalker: track the owner of the value. 2024-02-12 09:57:14 -08:00
Andrew Trick
63413916a1 LifetimeDependenceDiagnostics; handle @_unsafeNonescapableResult. 2024-02-12 09:57:14 -08:00
Andrew Trick
8b24382494 SwiftCompilerSources: cleanup and extend ArgumentConventions 
Provide APIs needed by lifetime dependence diagnostics, namely LifetimeDependenceConvention.

Reorganize the APIs so it's easy to find related functionality which
API is responsible for which functionality.

Remove the originalFunctionConvention complexity. It is no longer
needed for lifetime dependence inference, and generally should be
avoided in SIL.

Add some placeholder FIXMEs because this not a good PR in which to
change existing functionality.
 2024-02-12 09:57:14 -08:00
Andrew Trick
ddceffaf3b LifetimeDependenceDiagnostics pass 
Initial diagnostic pass to enforce ~Escapable types.
 2024-01-30 11:45:55 -08:00
Andrew Trick
25cff623ab Improve LifetimeDependenceUtils 2024-01-30 08:38:57 -08:00
Andrew Trick
2ef870a52b Add LifetimeDependence utilities 2024-01-22 23:57:03 -08:00