1; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t 2; RUN: llvm-dwarfdump %t | FileCheck %s 3; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s 4 5; CHECK: .debug_info contents: 6; CHECK: DW_TAG_compile_unit 7; CHECK-NEXT: DW_AT_stmt_list 8; CHECK-NEXT: DW_AT_GNU_dwo_name 9; CHECK-NEXT: DW_AT_comp_dir 10; CHECK-NEXT: DW_AT_GNU_dwo_id 11; CHECK-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset] (0x00000000) 12 13 14; CHECK: .debug_info.dwo contents: 15; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[A:0x[0-9a-z]*]]) 16; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[E:0x[0-9a-z]*]]) 17; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[B:0x[0-9a-z]*]]) 18; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[D:0x[0-9a-z]*]]) 19; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x000000a0) 20; CHECK: .debug_loc contents: 21; CHECK-NOT: Beginning address offset 22; CHECK: .debug_loc.dwo contents: 23 24; Don't assume these locations are entirely correct - feel free to update them 25; if they've changed due to a bugfix, change in register allocation, etc. 26 27; CHECK: [[A]]: Beginning address index: 2 28; CHECK-NEXT: Length: 199 29; CHECK-NEXT: Location description: 11 00 30; CHECK-NEXT: {{^$}} 31; CHECK-NEXT: Beginning address index: 3 32; CHECK-NEXT: Length: 23 33; CHECK-NEXT: Location description: 50 93 04 34; CHECK: [[E]]: Beginning address index: 4 35; CHECK-NEXT: Length: 21 36; CHECK-NEXT: Location description: 50 93 04 37; CHECK: [[B]]: Beginning address index: 5 38; CHECK-NEXT: Length: 19 39; CHECK-NEXT: Location description: 50 93 04 40; CHECK: [[D]]: Beginning address index: 6 41; CHECK-NEXT: Length: 23 42; CHECK-NEXT: Location description: 50 93 04 43 44; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo) 45; HDR-NOT: .rela.{{.*}}.dwo 46 47; Make sure we have enough stuff in the debug_addr to cover the address indexes 48; (6 is the last index in debug_loc.dwo, making 7 entries of 8 bytes each, 7 * 8 49; == 56 base 10 == 38 base 16) 50 51; HDR: .debug_addr 00000038 52; HDR-NOT: .rela.{{.*}}.dwo 53 54; From the code: 55 56; extern int c; 57; static void foo (int p) 58; { 59; int a, b; 60; unsigned int d, e; 61 62; for (a = 0; a < 30; a++) 63; for (d = 0; d < 30; d++) 64; for (b = 0; b < 30; b++) 65; for (e = 0; e < 30; e++) 66; { 67; int *w = &c; 68; *w &= p; 69; } 70; } 71 72; void 73; bar () 74; { 75; foo (1); 76; } 77 78; compiled with: 79 80; clang -g -S -gsplit-dwarf -O1 small.c 81 82@c = external global i32 83 84; Function Attrs: nounwind uwtable 85define void @bar() #0 { 86entry: 87 tail call fastcc void @foo(), !dbg !27 88 ret void, !dbg !28 89} 90 91; Function Attrs: nounwind uwtable 92define internal fastcc void @foo() #0 { 93entry: 94 tail call void @llvm.dbg.value(metadata !29, i64 0, metadata !13), !dbg !30 95 tail call void @llvm.dbg.value(metadata !44, i64 0, metadata !14), !dbg !31 96 %c.promoted9 = load i32* @c, align 4, !dbg !32, !tbaa !33 97 br label %for.cond1.preheader, !dbg !31 98 99for.cond1.preheader: ; preds = %for.inc16, %entry 100 %and.lcssa.lcssa.lcssa10 = phi i32 [ %c.promoted9, %entry ], [ %and, %for.inc16 ] 101 %a.08 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ] 102 br label %for.cond4.preheader, !dbg !37 103 104for.cond4.preheader: ; preds = %for.inc13, %for.cond1.preheader 105 %and.lcssa.lcssa7 = phi i32 [ %and.lcssa.lcssa.lcssa10, %for.cond1.preheader ], [ %and, %for.inc13 ] 106 %d.06 = phi i32 [ 0, %for.cond1.preheader ], [ %inc14, %for.inc13 ] 107 br label %for.cond7.preheader, !dbg !38 108 109for.cond7.preheader: ; preds = %for.inc10, %for.cond4.preheader 110 %and.lcssa5 = phi i32 [ %and.lcssa.lcssa7, %for.cond4.preheader ], [ %and, %for.inc10 ] 111 %b.03 = phi i32 [ 0, %for.cond4.preheader ], [ %inc11, %for.inc10 ] 112 br label %for.body9, !dbg !39 113 114for.body9: ; preds = %for.body9, %for.cond7.preheader 115 %and2 = phi i32 [ %and.lcssa5, %for.cond7.preheader ], [ %and, %for.body9 ], !dbg !40 116 %e.01 = phi i32 [ 0, %for.cond7.preheader ], [ %inc, %for.body9 ] 117 tail call void @llvm.dbg.value(metadata !41, i64 0, metadata !19), !dbg !40 118 %and = and i32 %and2, 1, !dbg !32 119 %inc = add i32 %e.01, 1, !dbg !39 120 tail call void @llvm.dbg.value(metadata !{i32 %inc}, i64 0, metadata !18), !dbg !39 121 %exitcond = icmp eq i32 %inc, 30, !dbg !39 122 br i1 %exitcond, label %for.inc10, label %for.body9, !dbg !39 123 124for.inc10: ; preds = %for.body9 125 %inc11 = add nsw i32 %b.03, 1, !dbg !38 126 tail call void @llvm.dbg.value(metadata !{i32 %inc11}, i64 0, metadata !15), !dbg !38 127 %exitcond11 = icmp eq i32 %inc11, 30, !dbg !38 128 br i1 %exitcond11, label %for.inc13, label %for.cond7.preheader, !dbg !38 129 130for.inc13: ; preds = %for.inc10 131 %inc14 = add i32 %d.06, 1, !dbg !37 132 tail call void @llvm.dbg.value(metadata !{i32 %inc14}, i64 0, metadata !16), !dbg !37 133 %exitcond12 = icmp eq i32 %inc14, 30, !dbg !37 134 br i1 %exitcond12, label %for.inc16, label %for.cond4.preheader, !dbg !37 135 136for.inc16: ; preds = %for.inc13 137 %inc17 = add nsw i32 %a.08, 1, !dbg !31 138 tail call void @llvm.dbg.value(metadata !{i32 %inc17}, i64 0, metadata !14), !dbg !31 139 %exitcond13 = icmp eq i32 %inc17, 30, !dbg !31 140 br i1 %exitcond13, label %for.end18, label %for.cond1.preheader, !dbg !31 141 142for.end18: ; preds = %for.inc16 143 store i32 %and, i32* @c, align 4, !dbg !32, !tbaa !33 144 ret void, !dbg !42 145} 146 147; Function Attrs: nounwind readnone 148declare void @llvm.dbg.value(metadata, i64, metadata) #1 149 150attributes #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" } 151attributes #1 = { nounwind readnone } 152 153!llvm.dbg.cu = !{!0} 154!llvm.module.flags = !{!26, !43} 155 156!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.4 (trunk 191700) (llvm/trunk 191710)", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"small.dwo"} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/echristo/tmp/small.c] [DW_LANG_C99] 157!1 = metadata !{metadata !"small.c", metadata !"/usr/local/google/home/echristo/tmp"} 158!2 = metadata !{} 159!3 = metadata !{metadata !4, metadata !8} 160!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"bar", metadata !"bar", metadata !"", i32 18, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 true, void ()* @bar, null, null, metadata !2, i32 19} ; [ DW_TAG_subprogram ] [line 18] [def] [scope 19] [bar] 161!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/usr/local/google/home/echristo/tmp/small.c] 162!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 163!7 = metadata !{null} 164!8 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"foo", metadata !"foo", metadata !"", i32 2, metadata !9, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @foo, null, null, metadata !12, i32 3} ; [ DW_TAG_subprogram ] [line 2] [local] [def] [scope 3] [foo] 165!9 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 166!10 = metadata !{null, metadata !11} 167!11 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 168!12 = metadata !{metadata !13, metadata !14, metadata !15, metadata !16, metadata !18, metadata !19} 169!13 = metadata !{i32 786689, metadata !8, metadata !"p", metadata !5, i32 16777218, metadata !11, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [p] [line 2] 170!14 = metadata !{i32 786688, metadata !8, metadata !"a", metadata !5, i32 4, metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [a] [line 4] 171!15 = metadata !{i32 786688, metadata !8, metadata !"b", metadata !5, i32 4, metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [b] [line 4] 172!16 = metadata !{i32 786688, metadata !8, metadata !"d", metadata !5, i32 5, metadata !17, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [d] [line 5] 173!17 = metadata !{i32 786468, null, null, metadata !"unsigned int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 7} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned] 174!18 = metadata !{i32 786688, metadata !8, metadata !"e", metadata !5, i32 5, metadata !17, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [e] [line 5] 175!19 = metadata !{i32 786688, metadata !20, metadata !"w", metadata !5, i32 12, metadata !25, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [w] [line 12] 176!20 = metadata !{i32 786443, metadata !1, metadata !21, i32 11, i32 0, i32 4} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c] 177!21 = metadata !{i32 786443, metadata !1, metadata !22, i32 10, i32 0, i32 3} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c] 178!22 = metadata !{i32 786443, metadata !1, metadata !23, i32 9, i32 0, i32 2} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c] 179!23 = metadata !{i32 786443, metadata !1, metadata !24, i32 8, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c] 180!24 = metadata !{i32 786443, metadata !1, metadata !8, i32 7, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/echristo/tmp/small.c] 181!25 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int] 182!26 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} 183!27 = metadata !{i32 20, i32 0, metadata !4, null} 184!28 = metadata !{i32 21, i32 0, metadata !4, null} 185!29 = metadata !{i32 1} 186!30 = metadata !{i32 2, i32 0, metadata !8, null} 187!31 = metadata !{i32 7, i32 0, metadata !24, null} 188!32 = metadata !{i32 13, i32 0, metadata !20, null} 189!33 = metadata !{metadata !34, metadata !34, i64 0} 190!34 = metadata !{metadata !"int", metadata !35, i64 0} 191!35 = metadata !{metadata !"omnipotent char", metadata !36, i64 0} 192!36 = metadata !{metadata !"Simple C/C++ TBAA"} 193!37 = metadata !{i32 8, i32 0, metadata !23, null} ; [ DW_TAG_imported_declaration ] 194!38 = metadata !{i32 9, i32 0, metadata !22, null} 195!39 = metadata !{i32 10, i32 0, metadata !21, null} 196!40 = metadata !{i32 12, i32 0, metadata !20, null} 197!41 = metadata !{i32* @c} 198!42 = metadata !{i32 15, i32 0, metadata !8, null} 199!43 = metadata !{i32 1, metadata !"Debug Info Version", i32 1} 200!44 = metadata !{i32 0} 201