81518d06ac
Require DISubprogram metadata to carry a non-null type in the verifier. LangRef specifies that the `type:` field of `DISubprogram` points to a `DISubroutineType`. This patch diagnoses malformed debug info where the field is omitted or resolves to null, while preserving the existing wrong-type diagnostic for non-DISubroutineType operands. Update hand-written LLVM IR tests to use valid DISubprogram metadata where they are not intentionally testing malformed debug info. These tests now use minimal DISubroutineType metadata so the new verifier check does not mask their original coverage. Fixes #186557
34 lines
1.3 KiB
LLVM
34 lines
1.3 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-unknown -stop-before=finalize-isel %s -o - -simplify-mir | FileCheck %s
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; The byval argument of the function will be allocated a fixed stack slot. Test
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; that we serialize the fixed slot correctly.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-unknown"
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
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define hidden void @foo(ptr byval(i32) %dstRect) {
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; CHECK-LABEL: name: foo
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entry:
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call void @llvm.dbg.declare(metadata ptr %dstRect, metadata !3, metadata !DIExpression()), !dbg !5
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; CHECK: fixedStack:
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; CHECK: id: 0
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; CHECK: debug-info-variable: '!3'
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; CHECK: debug-info-expression: '!DIExpression()'
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; CHECK: debug-info-location: '!7'
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unreachable
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}
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attributes #0 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1)
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!1 = !DIFile(filename: "file.cpp", directory: "/dir")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = !DILocalVariable(name: "dstRect", scope: !4)
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!4 = distinct !DISubprogram(name: "foo", linkageName: "foo", scope: !0, file: !1, line: 42, unit: !0, type: !6)
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!5 = !DILocation(line: 42, column: 85, scope: !4)
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!6 = !DISubroutineType(types: !7)
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!7 = !{null}
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