Enable InlineArray type sugar

hamishknight · hamishknight · commit f807cbe30edb · 2025-07-11T13:26:24.000+01:00
Promote it from an experimental feature.

rdar://155607927
diff --git a/include/swift/Basic/Features.def b/include/swift/Basic/Features.def
@@ -267,6 +267,7 @@ SUPPRESSIBLE_LANGUAGE_FEATURE(ABIAttributeSE0479, 479, "@abi attribute on functi
 LANGUAGE_FEATURE(BuiltinSelect, 0, "Builtin.select")
 LANGUAGE_FEATURE(AlwaysInheritActorContext, 472, "@_inheritActorContext(always)")
 LANGUAGE_FEATURE(NonescapableAccessorOnTrivial, 0, "Support UnsafeMutablePointer.mutableSpan")
+LANGUAGE_FEATURE(InlineArrayTypeSugar, 483, "Type sugar for InlineArray")
 
 // Swift 6
 UPCOMING_FEATURE(ConciseMagicFile, 274, 6)
@@ -508,9 +509,6 @@ EXPERIMENTAL_FEATURE(ExtensibleEnums, true)
 /// Syntax sugar features for concurrency.
 EXPERIMENTAL_FEATURE(ConcurrencySyntaxSugar, true)
 
-/// Enable syntax sugar type '[3 of Int]' for Inline Array
-EXPERIMENTAL_FEATURE(InlineArrayTypeSugar, false)
-
 /// Allow declaration of compile-time values
 EXPERIMENTAL_FEATURE(CompileTimeValues, true)
 
diff --git a/lib/ASTGen/Sources/ASTGen/SourceFile.swift b/lib/ASTGen/Sources/ASTGen/SourceFile.swift
@@ -77,7 +77,6 @@ extension Parser.ExperimentalFeatures {
     mapFeature(.CoroutineAccessors, to: .coroutineAccessors)
     mapFeature(.OldOwnershipOperatorSpellings, to: .oldOwnershipOperatorSpellings)
     mapFeature(.KeyPathWithMethodMembers, to: .keypathWithMethodMembers)
-    mapFeature(.InlineArrayTypeSugar, to: .inlineArrayTypeSugar)
     mapFeature(.DefaultIsolationPerFile, to: .defaultIsolationPerFile)
   }
 }
diff --git a/lib/Parse/ParseType.cpp b/lib/Parse/ParseType.cpp
@@ -1318,8 +1318,6 @@ ParserResult<TypeRepr> Parser::parseTypeTupleBody() {
 }
 
 ParserResult<TypeRepr> Parser::parseTypeInlineArray(SourceLoc lSquare) {
-  ASSERT(Context.LangOpts.hasFeature(Feature::InlineArrayTypeSugar));
-
   ParserStatus status;
 
   // 'isStartOfInlineArrayTypeBody' means we should at least have a type and
@@ -1824,9 +1822,6 @@ bool Parser::canParseType() {
 }
 
 bool Parser::canParseStartOfInlineArrayType() {
-  if (!Context.LangOpts.hasFeature(Feature::InlineArrayTypeSugar))
-    return false;
-
   // We must have at least '[<type> of', which cannot be any other kind of
   // expression or type. We specifically look for any type, not just integers
   // for better recovery in e.g cases where the user writes '[Int of 2]'. We
@@ -1844,9 +1839,6 @@ bool Parser::canParseStartOfInlineArrayType() {
 }
 
 bool Parser::isStartOfInlineArrayTypeBody() {
-  if (!Context.LangOpts.hasFeature(Feature::InlineArrayTypeSugar))
-    return false;
-
   BacktrackingScope backtrack(*this);
   return canParseStartOfInlineArrayType();
 }
@@ -1856,7 +1848,7 @@ bool Parser::canParseCollectionType() {
     return false;
 
   // Check to see if we have an InlineArray sugar type.
-  if (Context.LangOpts.hasFeature(Feature::InlineArrayTypeSugar)) {
+  {
     CancellableBacktrackingScope backtrack(*this);
     if (canParseStartOfInlineArrayType()) {
       backtrack.cancelBacktrack();
diff --git a/test/ASTGen/types.swift b/test/ASTGen/types.swift
@@ -2,22 +2,18 @@
 
 // RUN: %target-swift-frontend-dump-parse -enable-experimental-feature ParserASTGen \
 // RUN:   -enable-experimental-feature NamedOpaqueTypes \
-// RUN:   -enable-experimental-feature InlineArrayTypeSugar \
 // RUN:   | %sanitize-address > %t/astgen.ast
 // RUN: %target-swift-frontend-dump-parse \
 // RUN:   -enable-experimental-feature NamedOpaqueTypes \
-// RUN:   -enable-experimental-feature InlineArrayTypeSugar \
 // RUN:   | %sanitize-address > %t/cpp-parser.ast
 
 // RUN: %diff -u %t/astgen.ast %t/cpp-parser.ast
 
 // RUN: %target-typecheck-verify-swift -enable-experimental-feature ParserASTGen \
-// RUN:   -enable-experimental-feature NamedOpaqueTypes \
-// RUN:   -enable-experimental-feature InlineArrayTypeSugar
+// RUN:   -enable-experimental-feature NamedOpaqueTypes
 
 // REQUIRES: swift_feature_ParserASTGen
 // REQUIRES: swift_feature_NamedOpaqueTypes
-// REQUIRES: swift_feature_InlineArrayTypeSugar
 
 // rdar://116686158
 // UNSUPPORTED: asan
diff --git a/test/Availability/inline_array_availability.swift b/test/Availability/inline_array_availability.swift
@@ -1,6 +1,5 @@
-// RUN: %target-typecheck-verify-swift -enable-experimental-feature InlineArrayTypeSugar -target %target-cpu-apple-macosx15.0
+// RUN: %target-typecheck-verify-swift -target %target-cpu-apple-macosx15.0
 
-// REQUIRES: swift_feature_InlineArrayTypeSugar
 // REQUIRES: OS=macosx
 
 func foo(x: InlineArray<3, Int>) {}
diff --git a/test/DebugInfo/sugar_inline_array.swift b/test/DebugInfo/sugar_inline_array.swift
@@ -1,6 +1,4 @@
-// RUN: %target-swift-frontend %s -emit-ir -enable-experimental-feature InlineArrayTypeSugar -disable-availability-checking -g -o - | %FileCheck %s
-
-// REQUIRES: swift_feature_InlineArrayTypeSugar
+// RUN: %target-swift-frontend %s -emit-ir -disable-availability-checking -g -o - | %FileCheck %s
 
 let a: ([3 of Int], InlineArray<3, Int>) = ([1, 2, 3], [1, 2, 3])
 let b: ([3 of [1 of String]], InlineArray<3, InlineArray<1, String>>) = ([[""], [""], [""]], [[""], [""], [""]])
diff --git a/test/IDE/complete_inline_array.swift b/test/IDE/complete_inline_array.swift
@@ -1,6 +1,4 @@
-// RUN: %batch-code-completion -enable-experimental-feature InlineArrayTypeSugar
-
-// REQUIRES: swift_feature_InlineArrayTypeSugar
+// RUN: %batch-code-completion
 
 struct FooBar {}
 
diff --git a/test/Sema/inlinearray.swift b/test/Sema/inlinearray.swift
@@ -1,6 +1,4 @@
-// RUN: %target-typecheck-verify-swift -disable-availability-checking -enable-experimental-feature InlineArrayTypeSugar
-
-// REQUIRES: swift_feature_InlineArrayTypeSugar
+// RUN: %target-typecheck-verify-swift -disable-availability-checking
 
 let a: InlineArray = [1, 2, 3] // Ok, InlineArray<3, Int>
 let b: InlineArray<_, Int> = [1, 2, 3] // Ok, InlineArray<3, Int>
diff --git a/test/Serialization/value_generics.swift b/test/Serialization/value_generics.swift
@@ -1,9 +1,8 @@
 // RUN: %empty-directory(%t)
-// RUN: %target-swift-frontend %s -emit-module -enable-experimental-feature RawLayout -enable-experimental-feature InlineArrayTypeSugar -disable-availability-checking -parse-as-library -o %t
+// RUN: %target-swift-frontend %s -emit-module -enable-experimental-feature RawLayout -disable-availability-checking -parse-as-library -o %t
 // RUN: %target-sil-opt -enable-sil-verify-all %t/value_generics.swiftmodule -o - | %FileCheck %s
 
 // REQUIRES: swift_feature_RawLayout
-// REQUIRES: swift_feature_InlineArrayTypeSugar
 
 // CHECK: @_rawLayout(likeArrayOf: Element, count: Count) struct Vector<Element, let Count : Int> : ~Copyable where Element : ~Copyable {
 @_rawLayout(likeArrayOf: Element, count: Count)
diff --git a/test/type/inline_array.swift b/test/type/inline_array.swift
@@ -1,6 +1,4 @@
-// RUN: %target-typecheck-verify-swift -enable-experimental-feature InlineArrayTypeSugar -disable-availability-checking
-
-// REQUIRES: swift_feature_InlineArrayTypeSugar
+// RUN: %target-typecheck-verify-swift -disable-availability-checking
 
 let _: [3 of Int]
 let _ = [3 of Int](repeating: 0)
diff --git a/test/type/inline_array_disabled.swift b/test/type/inline_array_disabled.swift

Original file line number	Diff line number	Diff line change
`@@ -77,7 +77,6 @@ extension Parser.ExperimentalFeatures {`
`77`	`77`	`mapFeature(.CoroutineAccessors, to: .coroutineAccessors)`
`78`	`78`	`mapFeature(.OldOwnershipOperatorSpellings, to: .oldOwnershipOperatorSpellings)`
`79`	`79`	`mapFeature(.KeyPathWithMethodMembers, to: .keypathWithMethodMembers)`
`80`		`- mapFeature(.InlineArrayTypeSugar, to: .inlineArrayTypeSugar)`
`81`	`80`	`mapFeature(.DefaultIsolationPerFile, to: .defaultIsolationPerFile)`
`82`	`81`	`}`
`83`	`82`	`}`