1 ; RUN: llc -split-dwarf-file=foo.dwo -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t 2 ; RUN: llvm-dwarfdump -v %t | FileCheck %s 3 ; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s 4 5 ; RUN: llc -dwarf-version=5 -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t 6 ; RUN: llvm-dwarfdump -v %t | FileCheck --check-prefix=V5RNGLISTS %s 7 8 ; CHECK: .debug_info contents: 9 ; CHECK: DW_TAG_compile_unit 10 ; CHECK-NEXT: DW_AT_stmt_list 11 ; CHECK-NEXT: DW_AT_GNU_dwo_name 12 ; CHECK-NEXT: DW_AT_comp_dir 13 ; CHECK-NEXT: DW_AT_GNU_dwo_id 14 ; CHECK-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset] (0x00000000) 15 16 ; CHECK: .debug_info.dwo contents: 17 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[A:0x[0-9a-z]*]] 18 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[E:0x[0-9a-z]*]] 19 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[B:0x[0-9a-z]*]] 20 ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[D:0x[0-9a-z]*]] 21 ; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000 22 ; CHECK-NOT: .debug_loc contents: 23 ; CHECK-NOT: Beginning address offset 24 ; CHECK: .debug_loc.dwo contents: 25 26 ; Don't assume these locations are entirely correct - feel free to update them 27 ; if they've changed due to a bugfix, change in register allocation, etc. 28 29 ; CHECK: [[A]]: 30 ; CHECK-NEXT: Addr idx 2 (w/ length 169): DW_OP_consts +0, DW_OP_stack_value 31 ; CHECK-NEXT: Addr idx 3 (w/ length 25): DW_OP_reg0 RAX 32 ; CHECK: [[E]]: 33 ; CHECK-NEXT: Addr idx 4 (w/ length 19): DW_OP_reg0 RAX 34 ; CHECK: [[B]]: 35 ; CHECK-NEXT: Addr idx 5 (w/ length 17): DW_OP_reg0 RAX 36 ; CHECK: [[D]]: 37 ; CHECK-NEXT: Addr idx 6 (w/ length 17): DW_OP_reg0 RAX 38 39 ; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo) 40 ; HDR-NOT: .rela.{{.*}}.dwo 41 42 ; Make sure we have enough stuff in the debug_addr to cover the address indexes 43 ; (6 is the last index in debug_loc.dwo, making 7 entries of 8 bytes each, 7 * 8 44 ; == 56 base 10 == 38 base 16) 45 46 ; HDR: .debug_addr 00000038 47 ; HDR-NOT: .rela.{{.*}}.dwo 48 49 ; Check for the existence of a DWARF v5-style range list table in the .debug_rnglists 50 ; section and that the compile unit has a DW_AT_rnglists_base attribute. 51 ; The table should contain at least one rangelist with at least 2 individual ranges. 52 53 ; V5RNGLISTS: .debug_info contents: 54 ; V5RNGLISTS: DW_TAG_compile_unit 55 ; V5RNGLISTS-NOT: DW_TAG 56 ; V5RNGLISTS: DW_AT_rnglists_base [DW_FORM_sec_offset] (0x0000000c) 57 ; V5RNGLISTS: .debug_rnglists contents: 58 ; V5RNGLISTS-NEXT: 0x00000000: range list header: length = 0x00000014, version = 0x0005, 59 ; V5RNGLISTS-SAME: addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000 60 ; V5RNGLISTS-NEXT: ranges: 61 ; V5RNGLISTS-NEXT: 0x0000000c: [DW_RLE_offset_pair]: 62 ; V5RNGLISTS-NEXT: 0x0000000f: [DW_RLE_offset_pair]: 63 ; V5RNGLISTS: 0x{{[0-9a-f]+}}: [DW_RLE_end_of_list] 64 65 ; From the code: 66 67 ; extern int c; 68 ; static void foo (int p) 69 ; { 70 ; int a, b; 71 ; unsigned int d, e; 72 73 ; for (a = 0; a < 30; a++) 74 ; for (d = 0; d < 30; d++) 75 ; for (b = 0; b < 30; b++) 76 ; for (e = 0; e < 30; e++) 77 ; { 78 ; int *w = &c; 79 ; *w &= p; 80 ; } 81 ; } 82 83 ; void 84 ; bar () 85 ; { 86 ; foo (1); 87 ; } 88 89 ; compiled with: 90 91 ; clang -g -S -gsplit-dwarf -O1 small.c 92 93 @c = external global i32 94 95 ; Function Attrs: nounwind uwtable 96 define void @bar() #0 !dbg !4 { 97 entry: 98 tail call fastcc void @foo(), !dbg !27 99 ret void, !dbg !28 100 } 101 102 ; Function Attrs: nounwind uwtable 103 define internal fastcc void @foo() #0 !dbg !8 { 104 entry: 105 tail call void @llvm.dbg.value(metadata i32 1, metadata !13, metadata !DIExpression()), !dbg !30 106 tail call void @llvm.dbg.value(metadata i32 0, metadata !14, metadata !DIExpression()), !dbg !31 107 %c.promoted9 = load i32, i32* @c, align 4, !dbg !32, !tbaa !33 108 br label %for.cond1.preheader, !dbg !31 109 110 for.cond1.preheader: ; preds = %for.inc16, %entry 111 %and.lcssa.lcssa.lcssa10 = phi i32 [ %c.promoted9, %entry ], [ %and, %for.inc16 ] 112 %a.08 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ] 113 br label %for.cond4.preheader, !dbg !37 114 115 for.cond4.preheader: ; preds = %for.inc13, %for.cond1.preheader 116 %and.lcssa.lcssa7 = phi i32 [ %and.lcssa.lcssa.lcssa10, %for.cond1.preheader ], [ %and, %for.inc13 ] 117 %d.06 = phi i32 [ 0, %for.cond1.preheader ], [ %inc14, %for.inc13 ] 118 br label %for.cond7.preheader, !dbg !38 119 120 for.cond7.preheader: ; preds = %for.inc10, %for.cond4.preheader 121 %and.lcssa5 = phi i32 [ %and.lcssa.lcssa7, %for.cond4.preheader ], [ %and, %for.inc10 ] 122 %b.03 = phi i32 [ 0, %for.cond4.preheader ], [ %inc11, %for.inc10 ] 123 br label %for.body9, !dbg !39 124 125 for.body9: ; preds = %for.body9, %for.cond7.preheader 126 %and2 = phi i32 [ %and.lcssa5, %for.cond7.preheader ], [ %and, %for.body9 ], !dbg !40 127 %e.01 = phi i32 [ 0, %for.cond7.preheader ], [ %inc, %for.body9 ] 128 tail call void @llvm.dbg.value(metadata i32* @c, metadata !19, metadata !DIExpression()), !dbg !40 129 %and = and i32 %and2, 1, !dbg !32 130 %inc = add i32 %e.01, 1, !dbg !39 131 tail call void @llvm.dbg.value(metadata i32 %inc, metadata !18, metadata !DIExpression()), !dbg !39 132 %exitcond = icmp eq i32 %inc, 30, !dbg !39 133 br i1 %exitcond, label %for.inc10, label %for.body9, !dbg !39 134 135 for.inc10: ; preds = %for.body9 136 %inc11 = add nsw i32 %b.03, 1, !dbg !38 137 tail call void @llvm.dbg.value(metadata i32 %inc11, metadata !15, metadata !DIExpression()), !dbg !38 138 %exitcond11 = icmp eq i32 %inc11, 30, !dbg !38 139 br i1 %exitcond11, label %for.inc13, label %for.cond7.preheader, !dbg !38 140 141 for.inc13: ; preds = %for.inc10 142 %inc14 = add i32 %d.06, 1, !dbg !37 143 tail call void @llvm.dbg.value(metadata i32 %inc14, metadata !16, metadata !DIExpression()), !dbg !37 144 %exitcond12 = icmp eq i32 %inc14, 30, !dbg !37 145 br i1 %exitcond12, label %for.inc16, label %for.cond4.preheader, !dbg !37 146 147 for.inc16: ; preds = %for.inc13 148 %inc17 = add nsw i32 %a.08, 1, !dbg !31 149 tail call void @llvm.dbg.value(metadata i32 %inc17, metadata !14, metadata !DIExpression()), !dbg !31 150 %exitcond13 = icmp eq i32 %inc17, 30, !dbg !31 151 br i1 %exitcond13, label %for.end18, label %for.cond1.preheader, !dbg !31 152 153 for.end18: ; preds = %for.inc16 154 store i32 %and, i32* @c, align 4, !dbg !32, !tbaa !33 155 ret void, !dbg !42 156 } 157 158 ; Function Attrs: nounwind readnone 159 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 160 161 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 162 attributes #1 = { nounwind readnone } 163 164 !llvm.dbg.cu = !{!0} 165 !llvm.module.flags = !{!26, !43} 166 167 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191700) (llvm/trunk 191710)", isOptimized: true, splitDebugFilename: "small.dwo", emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 168 !1 = !DIFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp") 169 !2 = !{} 170 !4 = distinct !DISubprogram(name: "bar", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, scopeLine: 19, file: !1, scope: !5, type: !6, retainedNodes: !2) 171 !5 = !DIFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp") 172 !6 = !DISubroutineType(types: !7) 173 !7 = !{null} 174 !8 = distinct !DISubprogram(name: "foo", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !9, retainedNodes: !12) 175 !9 = !DISubroutineType(types: !10) 176 !10 = !{null, !11} 177 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 178 !12 = !{!13, !14, !15, !16, !18, !19} 179 !13 = !DILocalVariable(name: "p", line: 2, arg: 1, scope: !8, file: !5, type: !11) 180 !14 = !DILocalVariable(name: "a", line: 4, scope: !8, file: !5, type: !11) 181 !15 = !DILocalVariable(name: "b", line: 4, scope: !8, file: !5, type: !11) 182 !16 = !DILocalVariable(name: "d", line: 5, scope: !8, file: !5, type: !17) 183 !17 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) 184 !18 = !DILocalVariable(name: "e", line: 5, scope: !8, file: !5, type: !17) 185 !19 = !DILocalVariable(name: "w", line: 12, scope: !20, file: !5, type: !25) 186 !20 = distinct !DILexicalBlock(line: 11, column: 0, file: !1, scope: !21) 187 !21 = distinct !DILexicalBlock(line: 10, column: 0, file: !1, scope: !22) 188 !22 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !23) 189 !23 = distinct !DILexicalBlock(line: 8, column: 0, file: !1, scope: !24) 190 !24 = distinct !DILexicalBlock(line: 7, column: 0, file: !1, scope: !8) 191 !25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11) 192 !26 = !{i32 2, !"Dwarf Version", i32 4} 193 !27 = !DILocation(line: 20, scope: !4) 194 !28 = !DILocation(line: 21, scope: !4) 195 !29 = !{i32 1} 196 !30 = !DILocation(line: 2, scope: !8) 197 !31 = !DILocation(line: 7, scope: !24) 198 !32 = !DILocation(line: 13, scope: !20) 199 !33 = !{!34, !34, i64 0} 200 !34 = !{!"int", !35, i64 0} 201 !35 = !{!"omnipotent char", !36, i64 0} 202 !36 = !{!"Simple C/C++ TBAA"} 203 !37 = !DILocation(line: 8, scope: !23) 204 !38 = !DILocation(line: 9, scope: !22) 205 !39 = !DILocation(line: 10, scope: !21) 206 !40 = !DILocation(line: 12, scope: !20) 207 !41 = !{i32* @c} 208 !42 = !DILocation(line: 15, scope: !8) 209 !43 = !{i32 1, !"Debug Info Version", i32 3} 210 !44 = !{i32 0} 211
