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[embedded] Initial support for generic classes in embedded Swift

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- VTableSpecializer, a new pass that synthesizes a new vtable per each observed concrete type used
- Don't use full type metadata refs in embedded Swift
- Lazily emit specialized class metadata (LazySpecializedClassMetadata) in IRGen
- Don't emit regular class metadata for a class decl if it's generic (only emit the specialized metadata)
This commit is contained in:
Kuba Mracek
2023-09-12 09:44:54 -07:00
parent dc6d7844dd
commit d0c2a4ccf8
23 changed files with 513 additions and 79 deletions
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34
test/embedded/classes-generic-no-stdlib.swift Normal file
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// RUN: %target-swift-emit-ir %s -parse-stdlib -enable-experimental-feature Embedded -target arm64e-apple-none | %FileCheck %s
precedencegroup AssignmentPrecedence { assignment: true }
public struct T1 {}
public struct T2 { var x: Builtin.Int1 }
public class MyClass<T> {
var t: T
init(t: T) { self.t = t }
}
public func foo(t: T1) -> MyClass<T1> {
return MyClass<T1>(t: t)
}
public func bar(t: T2) -> MyClass<T2> {
return MyClass<T2>(t: t)
}
// CHECK: @"$s4main7MyClassCyAA2T2VGN" = {{.*}}<{ ptr, ptr, ptr, ptr, ptr, ptr }> <{ ptr null, ptr @"$s4main7MyClassCfDAA2T1V_Tg5", ptr @"$s4main7MyClassC1txvgAA2T1V_Tg5", ptr @"$s4main7MyClassC1txvsAA2T1V_Tg5", ptr @"$s4main7MyClassC1txvMAA2T1V_Tg5", ptr @"$s4main7MyClassC1tACyxGx_tcfCAA2T1V_Tg5" }>
// CHECK: @"$s4main7MyClassCyAA2T1VGN" = {{.*}}<{ ptr, ptr, ptr, ptr, ptr, ptr }> <{ ptr null, ptr @"$s4main7MyClassCfDAA2T1V_Tg5", ptr @"$s4main7MyClassC1txvgAA2T1V_Tg5", ptr @"$s4main7MyClassC1txvsAA2T1V_Tg5", ptr @"$s4main7MyClassC1txvMAA2T1V_Tg5", ptr @"$s4main7MyClassC1tACyxGx_tcfCAA2T1V_Tg5" }>
// CHECK: define {{.*}}void @"$s4main7MyClassC1txvgAA2T1V_Tg5"(ptr swiftself %0)
// CHECK: define {{.*}}void @"$s4main7MyClassC1txvsAA2T1V_Tg5"(ptr swiftself %0)
// CHECK: define {{.*}}ptr @"$s4main2T1VWOd"(ptr %0, ptr %1)
// CHECK: define {{.*}}ptr @"$s4main7MyClassC1tACyxGx_tcfCAA2T1V_Tgm5"()
// CHECK: define {{.*}}ptr @"$s4main7MyClassC1tACyxGx_tcfCAA2T2V_Tgm5"(i1 %0)
// CHECK: define {{.*}}ptr @"$s4main7MyClassC1tACyxGx_tcfCAA2T1V_Tg5"(ptr swiftself %0)
// CHECK: define {{.*}}ptr @"$s4main7MyClassC1tACyxGx_tcfcAA2T1V_Tg5"(ptr swiftself %0)
// CHECK: define {{.*}}ptr @"$s4main7MyClassC1tACyxGx_tcfcAA2T2V_Tg5"(i1 %0, ptr swiftself %1)
// CHECK: define {{.*}}void @"$s4main7MyClassCfDAA2T1V_Tg5"(ptr swiftself %0)
// CHECK: define {{.*}}ptr @"$s4main3foo1tAA7MyClassCyAA2T1VGAG_tF"()
// CHECK: define {{.*}}ptr @"$s4main3bar1tAA7MyClassCyAA2T2VGAG_tF"(i1 %0)