diff options
Diffstat (limited to 'llvm/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll')
| -rw-r--r-- | llvm/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll b/llvm/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll new file mode 100644 index 00000000000..a8ef9565718 --- /dev/null +++ b/llvm/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll @@ -0,0 +1,201 @@ +; RUN: llc %s -stop-before expand-isel-pseudos -o - | FileCheck %s + +;-------------------------------------------------------------------- +; This test case is basically generated from the following C code. +; Compiled with "--target=x86_64-apple-darwin -S -g -O3" to get debug +; info for optimized code. +; +; struct SS { +; int a; +; int b; +; } S = { .a = 23, .b = -17 }; +; +; int test1() { +; struct SS* foo1 = &S; +; return (int)foo1; +; } +; +; int test2() { +; struct SS* foo2 = &S; +; struct SS* bar2 = &S; +; return (int)foo2 + (int)bar2; +; } +; +; int test3() { +; struct SS* bar3 = &S; +; struct SS* foo3 = &S; +; return (int)foo3 + (int)bar3; +; } +; +; int test4() { +; struct SS* foo4 = &S; +; struct SS* bar4 = &S; +; foo = 0; +; return (int)foo4 + (int)bar4; +; } +; +; int test5() { +; struct SS* bar5 = &S; +; struct SS* foo5 = &S; +; foo5 = 0; +; return (int)foo5 + (int)bar5; +; } +;-------------------------------------------------------------------- + +; CHECK: ![[FOO1:.*]] = !DILocalVariable(name: "foo1" +; CHECK: ![[BAR1:.*]] = !DILocalVariable(name: "bar1" +; CHECK: ![[FOO2:.*]] = !DILocalVariable(name: "foo2" +; CHECK: ![[BAR2:.*]] = !DILocalVariable(name: "bar2" +; CHECK: ![[FOO3:.*]] = !DILocalVariable(name: "bar3" +; CHECK: ![[BAR3:.*]] = !DILocalVariable(name: "foo3" +; CHECK: ![[FOO4:.*]] = !DILocalVariable(name: "foo4" +; CHECK: ![[BAR4:.*]] = !DILocalVariable(name: "bar4" +; CHECK: ![[FOO5:.*]] = !DILocalVariable(name: "bar5" +; CHECK: ![[BAR5:.*]] = !DILocalVariable(name: "foo5" + + +source_filename = "sdag-dangling-dbgvalue.c" +target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.4.0" + +%struct.SS = type { i32, i32 } + +@S = global %struct.SS { i32 23, i32 -17 }, align 4, !dbg !0 + +; Verify that the def comes before the debug-use for foo1. +; TODO: Currently dbg.value for bar1 is dropped(?), is that expected? +define i32 @test1() local_unnamed_addr #0 !dbg !17 { +; CHECK-LABEL: bb.0.entry1 +; CHECK-NEXT: [[REG1:%[0-9]+]]:gr64 = +; CHECK-NEXT: DBG_VALUE debug-use [[REG1]], debug-use $noreg, ![[FOO1]], !DIExpression() +entry1: + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !20, metadata !DIExpression()), !dbg !23 + call void @llvm.dbg.value(metadata %struct.SS* null, metadata !22, metadata !DIExpression()), !dbg !24 + ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !25 +} + +; Verify that the def comes before the debug-use for bar2. +; TODO: Currently dbg.value for foo2 is dropped. Seems to be a bug. The +; SelectionDAGBuilder should support several dangling dbg.value for the +; same value. +define i32 @test2() local_unnamed_addr #0 !dbg !26 { +; CHECK-LABEL: bb.0.entry2 +; CHECK-NEXT: [[REG2:%[0-9]+]]:gr64 = +; CHECK-NEXT: DBG_VALUE debug-use [[REG2]], debug-use $noreg, ![[BAR2]], !DIExpression() +entry2: + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !28, metadata !DIExpression()), !dbg !30 + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !29, metadata !DIExpression()), !dbg !31 + ret i32 add (i32 ptrtoint (%struct.SS* @S to i32), i32 ptrtoint (%struct.SS* @S to i32)), !dbg !32 +} + +; Verify that the def comes before the debug-use for foo3. +; TODO: Currently dbg.value for bar3 is dropped. Seems to be a bug. The +; SelectionDAGBuilder should support several dangling dbg.value for the +; same value. +define i32 @test3() local_unnamed_addr #0 !dbg !33 { +; CHECK-LABEL: bb.0.entry3 +; CHECK-NEXT: [[REG3:%[0-9]+]]:gr64 = +; CHECK-NEXT: DBG_VALUE debug-use [[REG3]], debug-use $noreg, ![[FOO3]], !DIExpression() +entry3: + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !36, metadata !DIExpression()), !dbg !38 + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !35, metadata !DIExpression()), !dbg !37 + ret i32 add (i32 ptrtoint (%struct.SS* @S to i32), i32 ptrtoint (%struct.SS* @S to i32)), !dbg !39 +} + +; Verify that the def comes before the debug-use for bar4. +; TODO: Currently dbg.value for foo4 is dropped. It is set to null and not +; used. Just like in test1 it can be discussed if there should be a +; DBG_VALUE for foo4 here. +define i32 @test4() local_unnamed_addr #0 !dbg !40 { +; CHECK-LABEL: bb.0.entry4 +; CHECK-NEXT: [[REG4:%[0-9]+]]:gr64 = +; CHECK-NEXT: DBG_VALUE debug-use [[REG4]], debug-use $noreg, ![[BAR4]], !DIExpression() +entry4: + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !42, metadata !DIExpression()), !dbg !44 + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !43, metadata !DIExpression()), !dbg !45 + call void @llvm.dbg.value(metadata %struct.SS* null, metadata !42, metadata !DIExpression()), !dbg !44 + ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !46 +} + +; Verify that we do not get a DBG_VALUE that maps foo5 to @S here. +; TODO: At the moment we do not get any DBG_VALUE at all here. If +; SelectionDAGBuilder should support several dangling dbg.value for the +; same value it would be possible to at least get a DBG_VALUE for +; bar5. +; TODO: foo5 is set to null, and it is not really used. Just like in test1 it +; can be discussed if there should be a DBG_VALUE for foo5 here. +define i32 @test5() local_unnamed_addr #0 !dbg !47 { +; CHECK-LABEL: bb.0.entry5: +; CHECK-NOT: DBG_VALUE +; CHECK: RET +entry5: + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !49, metadata !DIExpression()), !dbg !51 + call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !50, metadata !DIExpression()), !dbg !52 + call void @llvm.dbg.value(metadata %struct.SS* null, metadata !50, metadata !DIExpression()), !dbg !52 + ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !53 +} + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.value(metadata, metadata, metadata) #1 + +attributes #0 = { nounwind readnone uwtable } +attributes #1 = { nounwind readnone speculatable } + +!llvm.dbg.cu = !{!2} +!llvm.module.flags = !{!12, !13, !14, !15} +!llvm.ident = !{!16} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "S", scope: !2, file: !3, line: 4, type: !8, isLocal: false, isDefinition: true) +!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 327229) (llvm/trunk 327239)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !7) +!3 = !DIFile(filename: "sdag-dangling-dbgvalue.c", directory: "/repo/uabbpet/llvm-master") +!4 = !{} +!5 = !{!6} +!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!7 = !{!0} +!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "SS", file: !3, line: 1, size: 64, elements: !9) +!9 = !{!10, !11} +!10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !3, line: 2, baseType: !6, size: 32) +!11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !3, line: 3, baseType: !6, size: 32, offset: 32) +!12 = !{i32 2, !"Dwarf Version", i32 2} +!13 = !{i32 2, !"Debug Info Version", i32 3} +!14 = !{i32 1, !"wchar_size", i32 4} +!15 = !{i32 7, !"PIC Level", i32 2} +!16 = !{!"clang version 7.0.0 (trunk 327229) (llvm/trunk 327239)"} +!17 = distinct !DISubprogram(name: "test1", scope: !3, file: !3, line: 6, type: !18, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, variables: !19) +!18 = !DISubroutineType(types: !5) +!19 = !{!20, !22} +!20 = !DILocalVariable(name: "foo1", scope: !17, file: !3, line: 7, type: !21) +!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64) +!22 = !DILocalVariable(name: "bar1", scope: !17, file: !3, line: 8, type: !21) +!23 = !DILocation(line: 7, column: 14, scope: !17) +!24 = !DILocation(line: 8, column: 14, scope: !17) +!25 = !DILocation(line: 9, column: 3, scope: !17) +!26 = distinct !DISubprogram(name: "test2", scope: !3, file: !3, line: 12, type: !18, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !2, variables: !27) +!27 = !{!28, !29} +!28 = !DILocalVariable(name: "foo2", scope: !26, file: !3, line: 13, type: !21) +!29 = !DILocalVariable(name: "bar2", scope: !26, file: !3, line: 14, type: !21) +!30 = !DILocation(line: 13, column: 14, scope: !26) +!31 = !DILocation(line: 14, column: 14, scope: !26) +!32 = !DILocation(line: 15, column: 3, scope: !26) +!33 = distinct !DISubprogram(name: "test3", scope: !3, file: !3, line: 18, type: !18, isLocal: false, isDefinition: true, scopeLine: 18, isOptimized: true, unit: !2, variables: !34) +!34 = !{!35, !36} +!35 = !DILocalVariable(name: "bar3", scope: !33, file: !3, line: 19, type: !21) +!36 = !DILocalVariable(name: "foo3", scope: !33, file: !3, line: 20, type: !21) +!37 = !DILocation(line: 19, column: 14, scope: !33) +!38 = !DILocation(line: 20, column: 14, scope: !33) +!39 = !DILocation(line: 21, column: 3, scope: !33) +!40 = distinct !DISubprogram(name: "test4", scope: !3, file: !3, line: 24, type: !18, isLocal: false, isDefinition: true, scopeLine: 24, isOptimized: true, unit: !2, variables: !41) +!41 = !{!42, !43} +!42 = !DILocalVariable(name: "foo4", scope: !40, file: !3, line: 25, type: !21) +!43 = !DILocalVariable(name: "bar4", scope: !40, file: !3, line: 26, type: !21) +!44 = !DILocation(line: 25, column: 14, scope: !40) +!45 = !DILocation(line: 26, column: 14, scope: !40) +!46 = !DILocation(line: 28, column: 3, scope: !40) +!47 = distinct !DISubprogram(name: "test5", scope: !3, file: !3, line: 31, type: !18, isLocal: false, isDefinition: true, scopeLine: 31, isOptimized: true, unit: !2, variables: !48) +!48 = !{!49, !50} +!49 = !DILocalVariable(name: "bar5", scope: !47, file: !3, line: 32, type: !21) +!50 = !DILocalVariable(name: "foo5", scope: !47, file: !3, line: 33, type: !21) +!51 = !DILocation(line: 32, column: 14, scope: !47) +!52 = !DILocation(line: 33, column: 14, scope: !47) +!53 = !DILocation(line: 35, column: 3, scope: !47) |
