diff options
| author | Adrian Prantl <aprantl@apple.com> | 2017-02-28 23:48:42 +0000 |
|---|---|---|
| committer | Adrian Prantl <aprantl@apple.com> | 2017-02-28 23:48:42 +0000 |
| commit | 56d0100cfaf14fefc674d3dcd1396d62503b1c0a (patch) | |
| tree | 8dff7b5abcefef54d45cfae0188c0c1242d8370e /test/Verifier | |
| parent | 28ca8c3c86e9542a5fbaf41b6f82d12380e37ba7 (diff) | |
Teach the IR verifier to reject conflicting debug info for function arguments.
Conflicting debug info for function arguments causes hard-to-debug
assertions in the DWARF backend, so the Verifier should reject it.
For performance reasons this only checks function arguments from
non-inlined debug intrinsics for now.
rdar://problem/30520286
This reapplies r295749 after fixing PR32042.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296543 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Verifier')
| -rw-r--r-- | test/Verifier/fnarg-debuginfo.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Verifier/fnarg-debuginfo.ll b/test/Verifier/fnarg-debuginfo.ll new file mode 100644 index 000000000000..7cbe9ce93b97 --- /dev/null +++ b/test/Verifier/fnarg-debuginfo.ll @@ -0,0 +1,26 @@ +; RUN: not llvm-as < %s -o /dev/null 2>&1 | FileCheck %s + +declare void @llvm.dbg.declare(metadata, metadata, metadata) +declare void @llvm.dbg.value(metadata, i64, metadata, metadata) + +define void @foo() !dbg !2 { +entry: + %a = alloca i32 + ; CHECK: conflicting debug info for argument + call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !3, metadata !DIExpression()), !dbg !6 + call void @llvm.dbg.declare(metadata i32* %a, metadata !4, metadata !DIExpression()), !dbg !6 + ret void, !dbg !6 +} + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!7, !8} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", emissionKind: FullDebug) +!1 = !DIFile(filename: "x.c", directory: "/") +!2 = distinct !DISubprogram(name: "foo", scope: !0, isDefinition: true, unit: !0) +!3 = !DILocalVariable(name: "a", arg: 1, scope: !2, file: !1, line: 1, type: !5) +!4 = !DILocalVariable(name: "b", arg: 1, scope: !2, file: !1, line: 1, type: !5) +!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!6 = !DILocation(line: 1, scope: !2) +!7 = !{i32 2, !"Dwarf Version", i32 4} +!8 = !{i32 1, !"Debug Info Version", i32 3} |