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Augusto Noronha
9a42678cd0
Wrap indirect enum case payload types in DW_TAG_reference_type to indicate that the case stores a pointer to a heap-allocated box rather than the payload directly. rdar://170687015
25 lines
1.3 KiB
Swift
25 lines
1.3 KiB
Swift
// RUN: %target-swift-frontend -primary-file %s -emit-ir -gdwarf-types -o - | %FileCheck %s
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// Test that indirect enum cases are represented with DW_TAG_reference_type.
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// CHECK-DAG: !DICompositeType(tag: DW_TAG_structure_type, name: "TreeNode", {{.*}}elements: ![[OUTER:[0-9]+]]
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// CHECK-DAG: ![[OUTER]] = !{![[VP:[0-9]+]]}
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// CHECK-DAG: ![[VP]] = !DICompositeType(tag: DW_TAG_variant_part, {{.*}}elements: ![[ELTS:[0-9]+]])
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// CHECK-DAG: ![[ELTS]] = !{![[LEAF:[0-9]+]], ![[BRANCH:[0-9]+]]}
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// Both cases should have reference types since this is an indirect enum
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// CHECK-DAG: ![[LEAF]] = !DIDerivedType(tag: DW_TAG_member, name: "leaf", {{.*}}baseType: ![[LEAF_REF:[0-9]+]]
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// CHECK-DAG: ![[LEAF_REF]] = !DIDerivedType(tag: DW_TAG_reference_type, baseType: ![[INT:[0-9]+]]
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// CHECK-DAG: ![[INT]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Int",
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// CHECK-DAG: ![[BRANCH]] = !DIDerivedType(tag: DW_TAG_member, name: "branch", {{.*}}baseType: ![[BRANCH_REF:[0-9]+]]
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// CHECK-DAG: ![[BRANCH_REF]] = !DIDerivedType(tag: DW_TAG_reference_type, baseType: ![[TUPLE:[0-9]+]]
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// CHECK-DAG: ![[TUPLE]] = !DICompositeType(tag: DW_TAG_structure_type, name: "$s13indirect_enum8TreeNodeO_ACtD",
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indirect enum TreeNode {
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case leaf(Int)
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case branch(TreeNode, TreeNode)
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}
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let tree = TreeNode.leaf(42)
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