1; RUN: llc %s -stop-before finalize-isel -o - \ 2; RUN: -experimental-debug-variable-locations=false \ 3; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE 4 5; RUN: llc --try-experimental-debuginfo-iterators %s -stop-before finalize-isel -o - \ 6; RUN: -experimental-debug-variable-locations=false \ 7; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE 8; RUN: llc %s -stop-before finalize-isel -o - \ 9; RUN: -experimental-debug-variable-locations=true \ 10; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF 11 12 13; RUN: llc --try-experimental-debuginfo-iterators %s -stop-before finalize-isel -o - \ 14; RUN: -experimental-debug-variable-locations=true \ 15; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF 16 17;-------------------------------------------------------------------- 18; Adapted from sdag-dangling-dbgvalue.ll to test dbg.assign intrinsics. This 19; ensures that dbg.assigns with no linked store are treated as dbg.values. For 20; ease of writing, all the dbg.assign intrinsics refer to the same DIAssignID 21; !54. There is no linked store in any case. 22; 23; This test case is basically generated from the following C code. 24; Compiled with "--target=x86_64-apple-darwin -S -g -O3" to get debug 25; info for optimized code. 26; 27; struct SS { 28; int a; 29; int b; 30; } S = { .a = 23, .b = -17 }; 31; 32; int test1() { 33; struct SS* foo1 = &S; 34; return (int)foo1; 35; } 36; 37; int test2() { 38; struct SS* foo2 = &S; 39; struct SS* bar2 = &S; 40; return (int)foo2 + (int)bar2; 41; } 42; 43; int test3() { 44; struct SS* bar3 = &S; 45; struct SS* foo3 = &S; 46; return (int)foo3 + (int)bar3; 47; } 48; 49; int test4() { 50; struct SS* foo4 = &S; 51; struct SS* bar4 = &S; 52; foo = 0; 53; return (int)foo4 + (int)bar4; 54; } 55; 56; int test5() { 57; struct SS* bar5 = &S; 58; struct SS* foo5 = &S; 59; foo5 = 0; 60; return (int)foo5 + (int)bar5; 61; } 62;-------------------------------------------------------------------- 63 64; CHECK: ![[FOO1:.*]] = !DILocalVariable(name: "foo1" 65; CHECK: ![[BAR1:.*]] = !DILocalVariable(name: "bar1" 66; CHECK: ![[FOO2:.*]] = !DILocalVariable(name: "foo2" 67; CHECK: ![[BAR2:.*]] = !DILocalVariable(name: "bar2" 68; CHECK: ![[FOO3:.*]] = !DILocalVariable(name: "bar3" 69; CHECK: ![[BAR3:.*]] = !DILocalVariable(name: "foo3" 70; CHECK: ![[FOO4:.*]] = !DILocalVariable(name: "foo4" 71; CHECK: ![[BAR4:.*]] = !DILocalVariable(name: "bar4" 72; CHECK: ![[BAR5:.*]] = !DILocalVariable(name: "bar5" 73; CHECK: ![[FOO5:.*]] = !DILocalVariable(name: "foo5" 74 75source_filename = "sdag-dangling-dbgvalue.c" 76target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 77target triple = "x86_64-apple-macosx10.4.0" 78 79%struct.SS = type { i32, i32 } 80 81@S = global %struct.SS { i32 23, i32 -17 }, align 4, !dbg !0 82 83; Verify that the def comes before the for foo1. 84define i32 @test1() local_unnamed_addr #0 !dbg !17 { 85; CHECK-LABEL: bb.0.entry1 86; CHECK-NEXT: DBG_VALUE 0, $noreg, ![[BAR1]], !DIExpression() 87; CHECK-NEXT: [[REG1:%[0-9]+]]:gr64 = LEA64r 88; INSTRREF-SAME: debug-instr-number 1 89; INSTRREF-NEXT: DBG_INSTR_REF ![[FOO1]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 90; DBGVALUE-NEXT: DBG_VALUE [[REG1]], $noreg, ![[FOO1]], !DIExpression() 91entry1: 92 call void @llvm.dbg.assign(metadata ptr @S, metadata !20, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !23 93 call void @llvm.dbg.assign(metadata ptr null, metadata !22, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !24 94 ret i32 ptrtoint (ptr @S to i32), !dbg !25 95} 96 97; Verify that the def comes before the for foo2 and bar2. 98define i32 @test2() local_unnamed_addr #0 !dbg !26 { 99; CHECK-LABEL: bb.0.entry2 100; CHECK-NEXT: [[REG2:%[0-9]+]]:gr64 = LEA64r 101; INSTRREF-SAME: debug-instr-number 1 102; INSTRREF-NEXT: DBG_INSTR_REF ![[FOO2]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 103; INSTRREF-NEXT: DBG_INSTR_REF ![[BAR2]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 104; DBGVALUE-NEXT: DBG_VALUE [[REG2]], $noreg, ![[FOO2]], !DIExpression 105; DBGVALUE-NEXT: DBG_VALUE [[REG2]], $noreg, ![[BAR2]], !DIExpression 106entry2: 107 call void @llvm.dbg.assign(metadata ptr @S, metadata !28, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !30 108 call void @llvm.dbg.assign(metadata ptr @S, metadata !29, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !31 109 ret i32 add (i32 ptrtoint (ptr @S to i32), i32 ptrtoint (ptr @S to i32)), !dbg !32 110} 111 112; Verify that the def comes before the for foo3 and bar3. 113define i32 @test3() local_unnamed_addr #0 !dbg !33 { 114; CHECK-LABEL: bb.0.entry3 115; CHECK-NEXT: [[REG3:%[0-9]+]]:gr64 = LEA64r 116; INSTRREF-SAME: debug-instr-number 1 117; INSTRREF-NEXT: DBG_INSTR_REF ![[BAR3]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 118; INSTRREF-NEXT: DBG_INSTR_REF ![[FOO3]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 119; DBGVALUE-NEXT: DBG_VALUE [[REG3]], $noreg, ![[BAR3]], !DIExpression() 120; DBGVALUE-NEXT: DBG_VALUE [[REG3]], $noreg, ![[FOO3]], !DIExpression() 121entry3: 122 call void @llvm.dbg.assign(metadata ptr @S, metadata !36, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !38 123 call void @llvm.dbg.assign(metadata ptr @S, metadata !35, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !37 124 ret i32 add (i32 ptrtoint (ptr @S to i32), i32 ptrtoint (ptr @S to i32)), !dbg !39 125} 126 127; Verify that the def comes before the for bar4. 128define i32 @test4() local_unnamed_addr #0 !dbg !40 { 129; CHECK-LABEL: bb.0.entry4 130;; NOTE: The check for `DBG_VALUE $noreg, $noreg, ![[FOO4]], !DIExpression()` 131;; has been removed because AT lowering removes redundant debug intrinsics. 132; CHECK-NEXT: DBG_VALUE 0, $noreg, ![[FOO4]], !DIExpression() 133; CHECK-NEXT: [[REG4:%[0-9]+]]:gr64 = LEA64r 134; INSTRREF-SAME: debug-instr-number 1 135; INSTRREF-NEXT: DBG_INSTR_REF ![[BAR4]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 136; DBGVALUE-NEXT: DBG_VALUE [[REG4]], $noreg, ![[BAR4]], !DIExpression() 137entry4: 138 call void @llvm.dbg.assign(metadata ptr @S, metadata !42, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !44 139 call void @llvm.dbg.assign(metadata ptr @S, metadata !43, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !45 140 call void @llvm.dbg.assign(metadata ptr null, metadata !42, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !44 141 ret i32 ptrtoint (ptr @S to i32), !dbg !46 142} 143 144; Verify that we do not get a DBG_VALUE that maps foo5 to @S here. 145define i32 @test5() local_unnamed_addr #0 !dbg !47 { 146; CHECK-LABEL: bb.0.entry5: 147; cHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[FOO5]], !DIExpression() 148; CHECK-NEXT: DBG_VALUE 0, $noreg, ![[FOO5]], !DIExpression() 149; CHECK-NEXT: [[REG5:%[0-9]+]]:gr64 = LEA64r 150; INSTRREF-SAME: debug-instr-number 1 151; INSTRREF-NEXT: DBG_INSTR_REF ![[BAR5]], !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0) 152; DBGVALUE-NEXT: DBG_VALUE [[REG5]], $noreg, ![[BAR5]], !DIExpression() 153; CHECK-NOT: DBG_{{.*}} ![[FOO5]], !DIExpression() 154; CHECK: RET 155entry5: 156 call void @llvm.dbg.assign(metadata ptr @S, metadata !49, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !51 157 call void @llvm.dbg.assign(metadata ptr @S, metadata !50, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !52 158 call void @llvm.dbg.assign(metadata ptr null, metadata !50, metadata !DIExpression(), metadata !54, metadata ptr undef, metadata !DIExpression()), !dbg !52 159 ret i32 ptrtoint (ptr @S to i32), !dbg !53 160} 161 162declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) #1 163 164attributes #0 = { nounwind readnone uwtable } 165attributes #1 = { nounwind readnone speculatable } 166 167!llvm.dbg.cu = !{!2} 168!llvm.module.flags = !{!12, !13, !14, !15, !1000} 169!llvm.ident = !{!16} 170 171!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 172!1 = distinct !DIGlobalVariable(name: "S", scope: !2, file: !3, line: 4, type: !8, isLocal: false, isDefinition: true) 173!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) 174!3 = !DIFile(filename: "sdag-dangling-dbgvalue.c", directory: "/repo/uabbpet/llvm-master") 175!4 = !{} 176!5 = !{!6} 177!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 178!7 = !{!0} 179!8 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "SS", file: !3, line: 1, size: 64, elements: !9) 180!9 = !{!10, !11} 181!10 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !8, file: !3, line: 2, baseType: !6, size: 32) 182!11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !8, file: !3, line: 3, baseType: !6, size: 32, offset: 32) 183!12 = !{i32 2, !"Dwarf Version", i32 2} 184!13 = !{i32 2, !"Debug Info Version", i32 3} 185!14 = !{i32 1, !"wchar_size", i32 4} 186!15 = !{i32 7, !"PIC Level", i32 2} 187!16 = !{!"clang version 7.0.0 (trunk 327229) (llvm/trunk 327239)"} 188!17 = distinct !DISubprogram(name: "test1", scope: !3, file: !3, line: 6, type: !18, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, retainedNodes: !19) 189!18 = !DISubroutineType(types: !5) 190!19 = !{!20, !22} 191!20 = !DILocalVariable(name: "foo1", scope: !17, file: !3, line: 7, type: !21) 192!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64) 193!22 = !DILocalVariable(name: "bar1", scope: !17, file: !3, line: 8, type: !21) 194!23 = !DILocation(line: 7, column: 14, scope: !17) 195!24 = !DILocation(line: 8, column: 14, scope: !17) 196!25 = !DILocation(line: 9, column: 3, scope: !17) 197!26 = distinct !DISubprogram(name: "test2", scope: !3, file: !3, line: 12, type: !18, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !2, retainedNodes: !27) 198!27 = !{!28, !29} 199!28 = !DILocalVariable(name: "foo2", scope: !26, file: !3, line: 13, type: !21) 200!29 = !DILocalVariable(name: "bar2", scope: !26, file: !3, line: 14, type: !21) 201!30 = !DILocation(line: 13, column: 14, scope: !26) 202!31 = !DILocation(line: 14, column: 14, scope: !26) 203!32 = !DILocation(line: 15, column: 3, scope: !26) 204!33 = distinct !DISubprogram(name: "test3", scope: !3, file: !3, line: 18, type: !18, isLocal: false, isDefinition: true, scopeLine: 18, isOptimized: true, unit: !2, retainedNodes: !34) 205!34 = !{!35, !36} 206!35 = !DILocalVariable(name: "bar3", scope: !33, file: !3, line: 19, type: !21) 207!36 = !DILocalVariable(name: "foo3", scope: !33, file: !3, line: 20, type: !21) 208!37 = !DILocation(line: 19, column: 14, scope: !33) 209!38 = !DILocation(line: 20, column: 14, scope: !33) 210!39 = !DILocation(line: 21, column: 3, scope: !33) 211!40 = distinct !DISubprogram(name: "test4", scope: !3, file: !3, line: 24, type: !18, isLocal: false, isDefinition: true, scopeLine: 24, isOptimized: true, unit: !2, retainedNodes: !41) 212!41 = !{!42, !43} 213!42 = !DILocalVariable(name: "foo4", scope: !40, file: !3, line: 25, type: !21) 214!43 = !DILocalVariable(name: "bar4", scope: !40, file: !3, line: 26, type: !21) 215!44 = !DILocation(line: 25, column: 14, scope: !40) 216!45 = !DILocation(line: 26, column: 14, scope: !40) 217!46 = !DILocation(line: 28, column: 3, scope: !40) 218!47 = distinct !DISubprogram(name: "test5", scope: !3, file: !3, line: 31, type: !18, isLocal: false, isDefinition: true, scopeLine: 31, isOptimized: true, unit: !2, retainedNodes: !48) 219!48 = !{!49, !50} 220!49 = !DILocalVariable(name: "bar5", scope: !47, file: !3, line: 32, type: !21) 221!50 = !DILocalVariable(name: "foo5", scope: !47, file: !3, line: 33, type: !21) 222!51 = !DILocation(line: 32, column: 14, scope: !47) 223!52 = !DILocation(line: 33, column: 14, scope: !47) 224!53 = !DILocation(line: 35, column: 3, scope: !47) 225!54 = distinct !DIAssignID() 226!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true} 227