; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t ; RUN: llvm-dwarfdump %t | FileCheck %s ; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s ; CHECK: .debug_info contents: ; CHECK: DW_TAG_compile_unit ; CHECK-NEXT: DW_AT_stmt_list ; CHECK-NEXT: DW_AT_GNU_dwo_name ; CHECK-NEXT: DW_AT_comp_dir ; CHECK-NEXT: DW_AT_GNU_dwo_id ; CHECK-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset] (0x00000000) ; CHECK: .debug_info.dwo contents: ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[A:0x[0-9a-z]*]]) ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[E:0x[0-9a-z]*]]) ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[B:0x[0-9a-z]*]]) ; CHECK: DW_AT_location [DW_FORM_sec_offset] ([[D:0x[0-9a-z]*]]) ; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000 ; CHECK: .debug_loc contents: ; CHECK-NOT: Beginning address offset ; CHECK: .debug_loc.dwo contents: ; Don't assume these locations are entirely correct - feel free to update them ; if they've changed due to a bugfix, change in register allocation, etc. ; CHECK: [[A]]: Beginning address index: 2 ; CHECK-NEXT: Length: 169 ; CHECK-NEXT: Location description: 11 00 ; CHECK-NEXT: {{^$}} ; CHECK-NEXT: Beginning address index: 3 ; CHECK-NEXT: Length: 21 ; CHECK-NEXT: Location description: 50 93 04 ; CHECK: [[E]]: Beginning address index: 4 ; CHECK-NEXT: Length: 19 ; CHECK-NEXT: Location description: 50 93 04 ; CHECK: [[B]]: Beginning address index: 5 ; CHECK-NEXT: Length: 17 ; CHECK-NEXT: Location description: 50 93 04 ; CHECK: [[D]]: Beginning address index: 6 ; CHECK-NEXT: Length: 17 ; CHECK-NEXT: Location description: 50 93 04 ; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo) ; HDR-NOT: .rela.{{.*}}.dwo ; Make sure we have enough stuff in the debug_addr to cover the address indexes ; (6 is the last index in debug_loc.dwo, making 7 entries of 8 bytes each, 7 * 8 ; == 56 base 10 == 38 base 16) ; HDR: .debug_addr 00000038 ; HDR-NOT: .rela.{{.*}}.dwo ; From the code: ; extern int c; ; static void foo (int p) ; { ; int a, b; ; unsigned int d, e; ; for (a = 0; a < 30; a++) ; for (d = 0; d < 30; d++) ; for (b = 0; b < 30; b++) ; for (e = 0; e < 30; e++) ; { ; int *w = &c; ; *w &= p; ; } ; } ; void ; bar () ; { ; foo (1); ; } ; compiled with: ; clang -g -S -gsplit-dwarf -O1 small.c @c = external global i32 ; Function Attrs: nounwind uwtable define void @bar() #0 { entry: tail call fastcc void @foo(), !dbg !27 ret void, !dbg !28 } ; Function Attrs: nounwind uwtable define internal fastcc void @foo() #0 { entry: tail call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !13, metadata !MDExpression()), !dbg !30 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !14, metadata !MDExpression()), !dbg !31 %c.promoted9 = load i32, i32* @c, align 4, !dbg !32, !tbaa !33 br label %for.cond1.preheader, !dbg !31 for.cond1.preheader: ; preds = %for.inc16, %entry %and.lcssa.lcssa.lcssa10 = phi i32 [ %c.promoted9, %entry ], [ %and, %for.inc16 ] %a.08 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ] br label %for.cond4.preheader, !dbg !37 for.cond4.preheader: ; preds = %for.inc13, %for.cond1.preheader %and.lcssa.lcssa7 = phi i32 [ %and.lcssa.lcssa.lcssa10, %for.cond1.preheader ], [ %and, %for.inc13 ] %d.06 = phi i32 [ 0, %for.cond1.preheader ], [ %inc14, %for.inc13 ] br label %for.cond7.preheader, !dbg !38 for.cond7.preheader: ; preds = %for.inc10, %for.cond4.preheader %and.lcssa5 = phi i32 [ %and.lcssa.lcssa7, %for.cond4.preheader ], [ %and, %for.inc10 ] %b.03 = phi i32 [ 0, %for.cond4.preheader ], [ %inc11, %for.inc10 ] br label %for.body9, !dbg !39 for.body9: ; preds = %for.body9, %for.cond7.preheader %and2 = phi i32 [ %and.lcssa5, %for.cond7.preheader ], [ %and, %for.body9 ], !dbg !40 %e.01 = phi i32 [ 0, %for.cond7.preheader ], [ %inc, %for.body9 ] tail call void @llvm.dbg.value(metadata i32* @c, i64 0, metadata !19, metadata !MDExpression()), !dbg !40 %and = and i32 %and2, 1, !dbg !32 %inc = add i32 %e.01, 1, !dbg !39 tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !18, metadata !MDExpression()), !dbg !39 %exitcond = icmp eq i32 %inc, 30, !dbg !39 br i1 %exitcond, label %for.inc10, label %for.body9, !dbg !39 for.inc10: ; preds = %for.body9 %inc11 = add nsw i32 %b.03, 1, !dbg !38 tail call void @llvm.dbg.value(metadata i32 %inc11, i64 0, metadata !15, metadata !MDExpression()), !dbg !38 %exitcond11 = icmp eq i32 %inc11, 30, !dbg !38 br i1 %exitcond11, label %for.inc13, label %for.cond7.preheader, !dbg !38 for.inc13: ; preds = %for.inc10 %inc14 = add i32 %d.06, 1, !dbg !37 tail call void @llvm.dbg.value(metadata i32 %inc14, i64 0, metadata !16, metadata !MDExpression()), !dbg !37 %exitcond12 = icmp eq i32 %inc14, 30, !dbg !37 br i1 %exitcond12, label %for.inc16, label %for.cond4.preheader, !dbg !37 for.inc16: ; preds = %for.inc13 %inc17 = add nsw i32 %a.08, 1, !dbg !31 tail call void @llvm.dbg.value(metadata i32 %inc17, i64 0, metadata !14, metadata !MDExpression()), !dbg !31 %exitcond13 = icmp eq i32 %inc17, 30, !dbg !31 br i1 %exitcond13, label %for.end18, label %for.cond1.preheader, !dbg !31 for.end18: ; preds = %for.inc16 store i32 %and, i32* @c, align 4, !dbg !32, !tbaa !33 ret void, !dbg !42 } ; Function Attrs: nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 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" } attributes #1 = { nounwind readnone } !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!26, !43} !0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191700) (llvm/trunk 191710)", isOptimized: true, splitDebugFilename: "small.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) !1 = !MDFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp") !2 = !{} !3 = !{!4, !8} !4 = !MDSubprogram(name: "bar", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 19, file: !1, scope: !5, type: !6, function: void ()* @bar, variables: !2) !5 = !MDFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp") !6 = !MDSubroutineType(types: !7) !7 = !{null} !8 = !MDSubprogram(name: "foo", line: 2, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !1, scope: !5, type: !9, function: void ()* @foo, variables: !12) !9 = !MDSubroutineType(types: !10) !10 = !{null, !11} !11 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) !12 = !{!13, !14, !15, !16, !18, !19} !13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p", line: 2, arg: 1, scope: !8, file: !5, type: !11) !14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "a", line: 4, scope: !8, file: !5, type: !11) !15 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 4, scope: !8, file: !5, type: !11) !16 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "d", line: 5, scope: !8, file: !5, type: !17) !17 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) !18 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "e", line: 5, scope: !8, file: !5, type: !17) !19 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "w", line: 12, scope: !20, file: !5, type: !25) !20 = distinct !MDLexicalBlock(line: 11, column: 0, file: !1, scope: !21) !21 = distinct !MDLexicalBlock(line: 10, column: 0, file: !1, scope: !22) !22 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !23) !23 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !24) !24 = distinct !MDLexicalBlock(line: 7, column: 0, file: !1, scope: !8) !25 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11) !26 = !{i32 2, !"Dwarf Version", i32 4} !27 = !MDLocation(line: 20, scope: !4) !28 = !MDLocation(line: 21, scope: !4) !29 = !{i32 1} !30 = !MDLocation(line: 2, scope: !8) !31 = !MDLocation(line: 7, scope: !24) !32 = !MDLocation(line: 13, scope: !20) !33 = !{!34, !34, i64 0} !34 = !{!"int", !35, i64 0} !35 = !{!"omnipotent char", !36, i64 0} !36 = !{!"Simple C/C++ TBAA"} !37 = !MDLocation(line: 8, scope: !23) !38 = !MDLocation(line: 9, scope: !22) !39 = !MDLocation(line: 10, scope: !21) !40 = !MDLocation(line: 12, scope: !20) !41 = !{i32* @c} !42 = !MDLocation(line: 15, scope: !8) !43 = !{i32 1, !"Debug Info Version", i32 3} !44 = !{i32 0}