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bee9fee58b
This changes the minimized signature in a very narrow edge case.
If you have
class C : P {}
and also
protocol P : C {}
protocol P where Self : C {}
then <T where T : P, T : C> now becomes <T : P> both with spellings;
before, the first one gave <T : P> and the second <T : C>.
60 lines
1.7 KiB
Swift
60 lines
1.7 KiB
Swift
// RUN: %target-swift-frontend -typecheck -debug-generic-signatures %s 2>&1 | %FileCheck %s
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// RUN: %target-swift-frontend -typecheck -debug-generic-signatures %s -disable-requirement-machine-concrete-contraction 2>&1 | %FileCheck %s
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protocol P : C {}
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class C : P {}
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// CHECK-LABEL: .SubP@
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// CHECK-NEXT: Requirement signature: <Self where Self : P>
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protocol SubP : P {}
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protocol Q {
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associatedtype T
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}
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// CHECK-LABEL: .foo1@
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// CHECK-NEXT: Generic signature: <T where T : P>
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func foo1<T : P>(_: T) {}
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// CHECK-LABEL: .foo1a@
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// CHECK-NEXT: Generic signature: <T where T : P>
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func foo1a<T>(_: T) where T : P, T : C {}
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// CHECK-LABEL: .foo1b@
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// CHECK-NEXT: Generic signature: <T where T : P>
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func foo1b<T>(_: T) where T : C, T : P {}
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// CHECK-LABEL: .foo2@
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// CHECK-NEXT: Generic signature: <T where T : Q, T.[Q]T : P>
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func foo2<T : Q>(_: T) where T.T : P {}
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// CHECK-LABEL: .foo3@
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// CHECK-NEXT: Generic signature: <T where T : SubP>
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func foo3<T : SubP>(_: T) {}
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// CHECK-LABEL: .foo4@
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// CHECK-NEXT: Generic signature: <T where T : Q, T.[Q]T : SubP>
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func foo4<T : Q>(_: T) where T.T : SubP {}
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protocol SuperP {}
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// CHECK-LABEL: .SubSuperP@
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// CHECK-NEXT: Requirement signature: <Self where Self : SuperC>
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protocol SubSuperP : SuperP, SuperC {}
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class SuperC : SubSuperP {}
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// CHECK-LABEL: .foo5@
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// CHECK-NEXT: Generic signature: <T where T : SubSuperP>
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func foo5<T : SubSuperP>(_: T) {}
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// CHECK-LABEL: .foo6@
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// CHECK-NEXT: Generic signature: <T where T : Q, T.[Q]T : SubSuperP>
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func foo6<T : Q>(_: T) where T.T : SubSuperP {}
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protocol POther where Self : COther {}
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class COther : POther {}
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// CHECK-LABEL: .foo7@
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// CHECK-NEXT: Generic signature: <T where T : POther>
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func foo7<T>(_: T) where T : COther, T : POther {} |