1 ; RUN: llc %s -filetype=obj -O0 -mtriple=i386-unknown-linux-gnu -dwarf-version=4 -o %t 2 ; RUN: llvm-dwarfdump %t | FileCheck %s 3 4 ; From the code: 5 6 ; debug-loc-offset1.cc 7 ; int bar (int b) { 8 ; return b+4; 9 ; } 10 11 ; debug-loc-offset2.cc 12 ; struct A { 13 ; int var; 14 ; virtual char foo(); 15 ; }; 16 17 ; void baz(struct A a) { 18 ; int z = 2; 19 ; if (a.var > 2) 20 ; z++; 21 ; if (a.foo() == 'a') 22 ; z++; 23 ; } 24 25 ; Compiled separately for i386-pc-linux-gnu and linked together. 26 ; This ensures that we have multiple compile units so that we can verify that 27 ; debug_loc entries are relative to the low_pc of the CU. The loc entry for 28 ; the byval argument in foo.cpp is in the second CU and so should have 29 ; an offset relative to that CU rather than from the beginning of the text 30 ; section. 31 32 ; Checking that we have two compile units with two sets of high/lo_pc. 33 ; CHECK: .debug_info contents 34 ; CHECK: DW_TAG_compile_unit 35 ; CHECK: DW_AT_low_pc 36 ; CHECK: DW_AT_high_pc 37 38 ; CHECK: DW_TAG_compile_unit 39 ; CHECK: DW_AT_low_pc 40 ; CHECK: DW_AT_high_pc 41 42 ; CHECK: DW_TAG_subprogram 43 ; CHECK-NOT: DW_TAG 44 ; CHECK: DW_AT_MIPS_linkage_name [DW_FORM_strp]{{.*}}"_Z3baz1A" 45 ; CHECK-NOT: {{DW_TAG|NULL}} 46 ; CHECK: DW_TAG_formal_parameter 47 ; CHECK-NOT: DW_TAG 48 ; CHECK: DW_AT_location [DW_FORM_sec_offset] (0x00000000) 49 ; CHECK-NOT: DW_TAG 50 ; CHECK: DW_AT_name [DW_FORM_strp]{{.*}}"a" 51 52 ; CHECK: DW_TAG_variable 53 ; CHECK: DW_AT_location [DW_FORM_exprloc] 54 ; CHECK-NOT: DW_AT_location 55 56 ; CHECK: .debug_loc contents: 57 ; CHECK: 0x00000000: Beginning address offset: 0x0000000000000000 58 ; CHECK: Ending address offset: 0x000000000000001a 59 60 %struct.A = type { i32 (...)**, i32 } 61 62 ; Function Attrs: nounwind 63 define i32 @_Z3bari(i32 %b) #0 { 64 entry: 65 %b.addr = alloca i32, align 4 66 store i32 %b, i32* %b.addr, align 4 67 call void @llvm.dbg.declare(metadata !{i32* %b.addr}, metadata !21), !dbg !22 68 %0 = load i32* %b.addr, align 4, !dbg !23 69 %add = add nsw i32 %0, 4, !dbg !23 70 ret i32 %add, !dbg !23 71 } 72 73 ; Function Attrs: nounwind readnone 74 declare void @llvm.dbg.declare(metadata, metadata) #1 75 76 define void @_Z3baz1A(%struct.A* %a) #2 { 77 entry: 78 %z = alloca i32, align 4 79 call void @llvm.dbg.declare(metadata !{%struct.A* %a}, metadata !24), !dbg !25 80 call void @llvm.dbg.declare(metadata !{i32* %z}, metadata !26), !dbg !27 81 store i32 2, i32* %z, align 4, !dbg !27 82 %var = getelementptr inbounds %struct.A* %a, i32 0, i32 1, !dbg !28 83 %0 = load i32* %var, align 4, !dbg !28 84 %cmp = icmp sgt i32 %0, 2, !dbg !28 85 br i1 %cmp, label %if.then, label %if.end, !dbg !28 86 87 if.then: ; preds = %entry 88 %1 = load i32* %z, align 4, !dbg !30 89 %inc = add nsw i32 %1, 1, !dbg !30 90 store i32 %inc, i32* %z, align 4, !dbg !30 91 br label %if.end, !dbg !30 92 93 if.end: ; preds = %if.then, %entry 94 %call = call signext i8 @_ZN1A3fooEv(%struct.A* %a), !dbg !31 95 %conv = sext i8 %call to i32, !dbg !31 96 %cmp1 = icmp eq i32 %conv, 97, !dbg !31 97 br i1 %cmp1, label %if.then2, label %if.end4, !dbg !31 98 99 if.then2: ; preds = %if.end 100 %2 = load i32* %z, align 4, !dbg !33 101 %inc3 = add nsw i32 %2, 1, !dbg !33 102 store i32 %inc3, i32* %z, align 4, !dbg !33 103 br label %if.end4, !dbg !33 104 105 if.end4: ; preds = %if.then2, %if.end 106 ret void, !dbg !34 107 } 108 109 declare signext i8 @_ZN1A3fooEv(%struct.A*) #2 110 111 attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 112 attributes #1 = { nounwind readnone } 113 attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 114 115 !llvm.dbg.cu = !{!0, !9} 116 !llvm.module.flags = !{!18, !19} 117 !llvm.ident = !{!20, !20} 118 119 !0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 (210479)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/llvm_cmake_gcc/debug-loc-offset1.cc] [DW_LANG_C_plus_plus] 120 !1 = metadata !{metadata !"debug-loc-offset1.cc", metadata !"/llvm_cmake_gcc"} 121 !2 = metadata !{} 122 !3 = metadata !{metadata !4} 123 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"bar", metadata !"bar", metadata !"_Z3bari", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32)* @_Z3bari, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [bar] 124 !5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/llvm_cmake_gcc/debug-loc-offset1.cc] 125 !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 ] 126 !7 = metadata !{metadata !8, metadata !8} 127 !8 = 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] 128 !9 = metadata !{i32 786449, metadata !10, i32 4, metadata !"clang version 3.5.0 (210479)", i1 false, metadata !"", i32 0, metadata !2, metadata !11, metadata !13, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/llvm_cmake_gcc/debug-loc-offset2.cc] [DW_LANG_C_plus_plus] 129 !10 = metadata !{metadata !"debug-loc-offset2.cc", metadata !"/llvm_cmake_gcc"} 130 !11 = metadata !{metadata !12} 131 !12 = metadata !{i32 786451, metadata !10, null, metadata !"A", i32 1, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, metadata !"_ZTS1A"} ; [ DW_TAG_structure_type ] [A] [line 1, size 0, align 0, offset 0] [decl] [from ] 132 !13 = metadata !{metadata !14} 133 !14 = metadata !{i32 786478, metadata !10, metadata !15, metadata !"baz", metadata !"baz", metadata !"_Z3baz1A", i32 6, metadata !16, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.A*)* @_Z3baz1A, null, null, metadata !2, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [baz] 134 !15 = metadata !{i32 786473, metadata !10} ; [ DW_TAG_file_type ] [/llvm_cmake_gcc/debug-loc-offset2.cc] 135 !16 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !17, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 136 !17 = metadata !{null, metadata !12} 137 !18 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} 138 !19 = metadata !{i32 2, metadata !"Debug Info Version", i32 1} 139 !20 = metadata !{metadata !"clang version 3.5.0 (210479)"} 140 !21 = metadata !{i32 786689, metadata !4, metadata !"b", metadata !5, i32 16777217, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [b] [line 1] 141 !22 = metadata !{i32 1, i32 0, metadata !4, null} 142 !23 = metadata !{i32 2, i32 0, metadata !4, null} 143 !24 = metadata !{i32 786689, metadata !14, metadata !"a", metadata !15, i32 16777222, metadata !"_ZTS1A", i32 8192, i32 0} ; [ DW_TAG_arg_variable ] [a] [line 6] 144 !25 = metadata !{i32 6, i32 0, metadata !14, null} 145 !26 = metadata !{i32 786688, metadata !14, metadata !"z", metadata !15, i32 7, metadata !8, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [z] [line 7] 146 !27 = metadata !{i32 7, i32 0, metadata !14, null} 147 !28 = metadata !{i32 8, i32 0, metadata !29, null} ; [ DW_TAG_imported_declaration ] 148 !29 = metadata !{i32 786443, metadata !10, metadata !14, i32 8, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/llvm_cmake_gcc/debug-loc-offset2.cc] 149 !30 = metadata !{i32 9, i32 0, metadata !29, null} 150 !31 = metadata !{i32 10, i32 0, metadata !32, null} 151 !32 = metadata !{i32 786443, metadata !10, metadata !14, i32 10, i32 0, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/llvm_cmake_gcc/debug-loc-offset2.cc] 152 !33 = metadata !{i32 11, i32 0, metadata !32, null} 153 !34 = metadata !{i32 12, i32 0, metadata !14, null} 154
