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23c2febb59
For Swift we would like to be able to encode the error types that a function may throw, so the debugger can display them alongside the function's return value when finish-ing a function. DWARF defines DW_TAG_thrown_type (intended to be used for C++ throw() declarations) that is a perfect fit for this purpose. This patch wires up support for DW_TAG_thrown_type in LLVM by adding a list of thrown types to DISubprogram. To offset the cost of the extra pointer, there is a follow-up patch that turns DISubprogram into a variable-length node. rdar://problem/29481673 Differential Revision: https://reviews.llvm.org/D32559 llvm-svn: 301489
23 lines
821 B
LLVM
23 lines
821 B
LLVM
; RUN: not opt -S <%s 2>&1| FileCheck %s
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define void @f() !dbg !14 {
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ret void
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}
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!0 = !{null}
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!1 = distinct !DICompositeType(tag: DW_TAG_structure_type)
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!2 = !DIFile(filename: "path/to/file", directory: "/path/to/dir")
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!3 = !DISubroutineType(types: !0)
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!4 = distinct !DICompositeType(tag: DW_TAG_structure_type)
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!8 = distinct !DICompileUnit(language: DW_LANG_Swift, producer: "clang",
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file: !2, emissionKind: 2)
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; CHECK: invalid thrown type
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!13 = !{!14}
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!14 = distinct !DISubprogram(name: "f", scope: !1,
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file: !2, line: 1, type: !3, isLocal: true,
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isDefinition: true, scopeLine: 2,
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unit: !8, thrownTypes: !13)
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!15 = !{i32 1, !"Debug Info Version", i32 3}
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!llvm.module.flags = !{!15}
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!llvm.dbg.cu = !{!8}
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