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K2: repeat K1 representation for flexible type parameters

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This commit changes the behavior of KT-59138 effectively declining it in 2.0.
However, we plan to implement KT-59138 behavior under a feature
flag in 2.0 (see KT-66447), and switch this feature on version 2.x.

Also, this commit implements the LC resolution about postponing
KT-57014 change. We don't have KT-57014 described behavior in 2.0 anymore.
However, we plan to implement a deprecation warning here, see KT-65578.

After this commit, 6 diagnostic tests become incorrectly broken:
- 5 tests from PurelyImplementedCollection group
- a test platformTypes/nullableTypeArgument.kt

This commit also breaks currently fixed-in-k2 KT-50134
(it is fixed again in the following commits),
as well as KT-58933 (it will remain not fixed till we enable KT-59138
behavior again).

#KT-65596 In Progress
#KT-57014 In Progress
#KT-58933 Submitted
This commit is contained in:
Denis.Zharkov
2024-02-06 15:33:03 +01:00
committed by Space Team
parent 7fd46f1450
commit 81414d758d
160 changed files with 343 additions and 479 deletions
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compiler/testData/codegen/box/sam/kt54600.fir.ir.txt
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+1 -1
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@@ -10,7 +10,7 @@ FILE fqName:<root> fileName:/box.kt
TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
CONSTRUCTOR_CALL 'public constructor <init> (filter: @[FlexibleNullability] <root>.Condition<in @[FlexibleNullability] kotlin.String?>?) declared in <root>.J' type=<root>.J origin=null
filter: TYPE_OP type=<root>.Condition<kotlin.Any?>? origin=SAM_CONVERSION typeOperand=<root>.Condition<kotlin.Any?>?
TYPE_OP type=kotlin.Function1<@[FlexibleNullability] kotlin.Any?, kotlin.Boolean>? origin=IMPLICIT_CAST typeOperand=kotlin.Function1<@[FlexibleNullability] kotlin.Any?, kotlin.Boolean>?
TYPE_OP type=kotlin.Function1<kotlin.Any?, kotlin.Boolean>? origin=IMPLICIT_CAST typeOperand=kotlin.Function1<kotlin.Any?, kotlin.Boolean>?
GET_VAR 'filter: kotlin.Function1<kotlin.String, kotlin.Boolean>? declared in <root>.foo' type=kotlin.Function1<kotlin.String, kotlin.Boolean>? origin=null
RETURN type=kotlin.Nothing from='public final fun foo (filter: kotlin.Function1<kotlin.String, kotlin.Boolean>?): kotlin.String declared in <root>'
CONST String type=kotlin.String value="OK"