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154b276533
This patch teaches the Verifier how to detect broken !llvm.loop attachments as discussed in https://reviews.llvm.org/D60831. This allows LLVM to warn and strip out the broken debug info before attempting an LTO compilation with input generated by LLVM predating https://reviews.llvm.org/rL361149. rdar://problem/51631158 Differential Revision: https://reviews.llvm.org/D63499 [Re-applies r363725 without changes after fixing a broken testcase.] llvm-svn: 363731
29 lines
1017 B
LLVM
29 lines
1017 B
LLVM
; RUN: llvm-as -disable-output < %s -o /dev/null 2>&1 | FileCheck %s
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define i32 @foo() !dbg !4 {
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entry:
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ret i32 0, !dbg !6
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}
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define i32 @bar() !dbg !5 {
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entry:
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; CHECK: !dbg attachment points at wrong subprogram for function
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ret i32 0, !dbg !10, !llvm.loop !9
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}
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; CHECK: warning: ignoring invalid debug info
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "dwarf-test.c", directory: "test")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "foo", scope: !0, isDefinition: true, unit: !0)
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!5 = distinct !DISubprogram(name: "bar", scope: !0, isDefinition: true, unit: !0)
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!6 = !DILocation(line: 7, scope: !4)
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!7 = !{i32 2, !"Dwarf Version", i32 3}
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!8 = !{i32 1, !"Debug Info Version", i32 3}
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!9 = !{!9, !10, !11}
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!10 = !DILocation(line: 1, scope: !5)
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!11 = !DILocation(line: 1, scope: !4)
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