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SIL: fix printing of dependent existential archetypes #83900

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Merged
merged 1 commit into from
Aug 26, 2025
Merged

SIL: fix printing of dependent existential archetypes #83900

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6 changes: 5 additions & 1 deletion lib/AST/ASTPrinter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7221,6 +7221,9 @@ class TypePrinter : public TypeVisitor<TypePrinter, void, NonRecursivePrintOptio
if (Options.PrintForSIL) {
auto *env = T->getGenericEnvironment();

if (!T->isRoot())
Printer << '(';

Printer << "@opened(\"" << env->getOpenedExistentialUUID() << "\", ";
auto existentialTy = env->maybeApplyOuterContextSubstitutions(
env->getOpenedExistentialType());
Expand All @@ -7232,7 +7235,8 @@ class TypePrinter : public TypeVisitor<TypePrinter, void, NonRecursivePrintOptio
auto interfaceTy = T->getInterfaceType();
auto selfTy = interfaceTy->getRootGenericParam();
auto &ctx = selfTy->getASTContext();
newAlternativeTypeNames[selfTy->getCanonicalType()] = ctx.Id_Self;
Identifier selfId = (T->isRoot() ? ctx.Id_Self : ctx.getIdentifier("Self)"));
newAlternativeTypeNames[selfTy->getCanonicalType()] = selfId;

PrintOptions::OverrideScope scope(Options);
OVERRIDE_PRINT_OPTION(scope, AlternativeTypeNames, &newAlternativeTypeNames);
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16 changes: 16 additions & 0 deletions test/SIL/Parser/basic.sil
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Original file line number Diff line number Diff line change
Expand Up @@ -1744,6 +1744,22 @@ bb0:
return %1 : $()
}

protocol P2 {
associatedtype A
}

// CHECK-LABEL: sil [ossa] @test_dependent_existential_archetype :
// CHECK: %2 = alloc_stack $(@opened("0B7C132E-8010-11F0-8526-0EA13E3AABB4", any P2) Self).A
// CHECK-LABEL: } // end sil function 'test_dependent_existential_archetype'
sil [ossa] @test_dependent_existential_archetype : $@convention(thin) (@thick any P2.Type) -> () {
bb0(%0 : $@thick any P2.Type):
%1 = open_existential_metatype %0 to $@thick (@opened("0B7C132E-8010-11F0-8526-0EA13E3AABB4", any P2) Self).Type
%2 = alloc_stack $(@opened("0B7C132E-8010-11F0-8526-0EA13E3AABB4", any P2) Self).A
dealloc_stack %2
%r = tuple ()
return %r
}

class Foo2: Foo {}

// CHECK-LABEL: sil_vtable Foo {
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