LTO: Add a testcase for linking modules with incompatible Debug Info
Versions. rdar://problem/16926122 llvm-svn: 209183
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; RUN: llvm-link %s %p/debug-info-version-b.ll -S -o - | FileCheck %s
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; Test linking of incompatible debug info versions. The debug info
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; from the other file should be dropped.
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; CHECK-NOT: metadata !{metadata !"b.c", metadata !""}
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; CHECK: metadata !{metadata !"a.c", metadata !""}
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; CHECK-NOT: metadata !{metadata !"b.c", metadata !""}
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!llvm.module.flags = !{ !0 }
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!llvm.dbg.cu = !{!1}
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!0 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
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!1 = metadata !{i32 589841, metadata !2, i32 12, metadata !"clang", i1 true, metadata !"", i32 0, metadata !3, metadata !3, metadata !3, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
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!2 = metadata !{metadata !"a.c", metadata !""}
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!3 = metadata !{}
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; RUN: true
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; Companion for debug-info-version-a.ll.
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!llvm.module.flags = !{ !0 }
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!llvm.dbg.cu = !{!1}
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!0 = metadata !{i32 2, metadata !"Debug Info Version", i32 42}
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!1 = metadata !{i32 589841, metadata !2, i32 12, metadata !"clang", metadata !"I AM UNEXPECTED!"} ; [ DW_TAG_compile_unit ]
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!2 = metadata !{metadata !"b.c", metadata !""}
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!3 = metadata !{}
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