derek.holloway
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40 lines
1.9 KiB
LLVM
40 lines
1.9 KiB
LLVM
; Test that the code generation works correctly on Linux
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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; Regression test for SelectionDAG::resolveDanglingDebugInfo crash when
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; handling aggregate types with nested empty structs.
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;
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; This test verifies the fix for null pointer dereference in
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; SelectionDAG::resolveDanglingDebugInfo. The original issue occurred when
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; insertvalue operations on aggregate types containing nested empty structs
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; produced SDValue nodes with null pointers.
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; CHECK-LABEL: test_empty_struct_debug:
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; CHECK: retq
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define void @test_empty_struct_debug() !dbg !4 {
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entry:
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%tmp = alloca { { i1, {} }, ptr, { { {} }, { {} } }, i64 }, align 8
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#dbg_value({ { {} }, { {} } } zeroinitializer, !5, !DIExpression(), !6)
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#dbg_value(i64 2, !7, !DIExpression(), !6)
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%0 = insertvalue { { i1, {} }, ptr, { { {} }, { {} } }, i64 } { { i1, {} } zeroinitializer, ptr null, { { {} }, { {} } } zeroinitializer, i64 2 }, ptr null, 1, !dbg !6
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%1 = insertvalue { { i1, {} }, ptr, { { {} }, { {} } }, i64 } %0, { i1, {} } zeroinitializer, 0, !dbg !8
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store { { i1, {} }, ptr, { { {} }, { {} } }, i64 } %1, ptr %tmp, align 8
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ret void
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3}
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!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly)
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!1 = !DIFile(filename: "test_selectiondag.cpp", directory: "/home/AnonTokyo/documents/llvm-project/temp")
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!2 = !{i32 2, !"Debug Info Version", i32 3}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = distinct !DISubprogram(name: "test_empty_struct_debug", scope: !1, file: !1, line: 1, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, type: !10)
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!5 = !DILocalVariable(name: "v1", scope: !4, file: !1, line: 2)
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!6 = !DILocation(line: 2, column: 1, scope: !4)
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!7 = !DILocalVariable(name: "v2", scope: !4, file: !1, line: 3)
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!8 = !DILocation(line: 3, column: 1, scope: !4)
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!9 = !{null}
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!10 = !DISubroutineType(types: !9)
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