1; RUN: llc -mtriple=x86_64-linux -split-dwarf-cross-cu-references -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s 2; RUN: llvm-objdump -r %t | FileCheck --check-prefix=CHECK --check-prefix=RELO_CROSS %s 3; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=CROSS %s 4; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL %s 5 6; RUN: llc -mtriple=x86_64-linux -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s 7; RUN: llvm-objdump -r %t | FileCheck --check-prefix=CHECK %s 8; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=NOCROSS %s 9; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL %s 10 11; Testing cross-CU references for types, subprograms, and variables 12; Built from code something like this: 13; foo.cpp: 14; struct t1 { int i; }; 15; void f(); 16; __attribute__((always_inline)) void f1(t1 t) { 17; f(); 18; } 19; void foo(t1 t) { 20; f1(t); 21; } 22; bar.cpp: 23; struct t1 { int i; }; 24; void f1(t1); 25; void bar(t1 t) { 26; f1(t); 27; } 28; $ clang++-tot -emit-llvm -S {foo,bar}.cpp -g 29; $ llvm-link-tot {foo,bar}.ll -S -o foobar.ll 30; $ clang++-tot -emit-llvm foobar.ll -o foobar.opt.ll -S -c 31; 32; Then manually removing the original f1 definition, to simplify the DWARF a bit 33; (so it only has the inlined definitions, no concrete definition) 34 35; Check that: 36; * no relocations are emitted for the debug_info.dwo section no matter what 37; * one debug_info->debug_info relocation in debug_info no matter what (for 38; split dwarf inlining) 39; * debug_info uses relocations and ref_addr no matter what 40; * debug_info.dwo uses relocations for types as well as abstract subprograms 41; and variables when -split-dwarf-cross-cu-references is used 42; * debug_info.dwo contains duplicate types, abstract subprograms and abstract 43; variables otherwise to avoid the need for cross-cu references 44 45; DWO: .debug_info.dwo contents: 46; CHECK-NOT: .rel{{a?}}.debug_info.dwo 47; CHECK: RELOCATION RECORDS FOR [.debug_info]: 48; CHECK-NOT: RELOCATION RECORDS 49; Expect one relocation in debug_info, from the inlined f1 in foo to its 50; abstract origin in bar 51; RELO_CROSS: R_X86_64_32 .debug_info 52; Expect no relocations in debug_info when disabling multiple CUs in Split DWARF 53; CHECK-NOT: .debug_info 54; CHECK: RELOCATION RECORDS 55; CHECK-NOT: .rel{{a?}}.debug_info.dwo 56 57; ALL: Compile Unit 58; ALL: DW_TAG_compile_unit 59; DWO: DW_AT_name {{.*}} "foo.cpp" 60; ALL: 0x[[F1:.*]]: DW_TAG_subprogram 61; ALL: DW_AT_name {{.*}} "f1" 62; DWO: 0x[[F1T:.*]]: DW_TAG_formal_parameter 63; DWO: DW_AT_name {{.*}} "t" 64; DWO: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1:.*]]} 65; DWO: NULL 66; DWO: 0x[[T1]]: DW_TAG_structure_type 67; DWO: DW_AT_name {{.*}} "t1" 68; ALL: DW_TAG_subprogram 69; ALL: DW_AT_name {{.*}} "foo" 70; DWO: DW_TAG_formal_parameter 71; DWO: DW_AT_name {{.*}} "t" 72; DWO: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1]]} 73; ALL: DW_TAG_inlined_subroutine 74; ALL: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1]]} 75; DWO: DW_TAG_formal_parameter 76; DWO: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1T]]} 77 78; NOCROSS-NOT: DW_TAG_compile_unit 79; CROSS: Compile Unit 80; CROSS: DW_TAG_compile_unit 81; CROSS: DW_AT_name {{.*}} "bar.cpp" 82; ALL: DW_TAG_subprogram 83; ALL: DW_AT_name {{.*}} "bar" 84; DWO: DW_TAG_formal_parameter 85; DWO: DW_AT_name {{.*}} "t" 86; CROSS: DW_AT_type [DW_FORM_ref_addr] (0x00000000[[T1]] 87; NOCROSS: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1]]} 88; ALL: DW_TAG_inlined_subroutine 89; CROSS: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1]] 90; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1]]} 91; DWO: DW_TAG_formal_parameter 92; CROSS: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1T]] 93; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1T]] 94 95%struct.t1 = type { i32 } 96 97; Function Attrs: nounwind readnone speculatable 98declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 99 100declare void @_Z1fv() #2 101 102; Function Attrs: noinline uwtable 103define void @_Z3foo2t1(i32 %t.coerce) #3 !dbg !20 { 104entry: 105 %t.i = alloca %struct.t1, align 4 106 call void @llvm.dbg.declare(metadata ptr %t.i, metadata !15, metadata !16), !dbg !21 107 %t = alloca %struct.t1, align 4 108 %agg.tmp = alloca %struct.t1, align 4 109 store i32 %t.coerce, ptr %t, align 4 110 call void @llvm.dbg.declare(metadata ptr %t, metadata !23, metadata !16), !dbg !24 111 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %t, i64 4, i1 false), !dbg !25 112 %0 = load i32, ptr %agg.tmp, align 4, !dbg !26 113 store i32 %0, ptr %t.i, align 4 114 call void @_Z1fv(), !dbg !27 115 ret void, !dbg !28 116} 117 118; Function Attrs: argmemonly nounwind 119declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #4 120 121; Function Attrs: noinline uwtable 122define void @_Z3bar2t1(i32 %t.coerce) #3 !dbg !29 { 123entry: 124 %t.i = alloca %struct.t1, align 4 125 call void @llvm.dbg.declare(metadata ptr %t.i, metadata !15, metadata !16), !dbg !30 126 %t = alloca %struct.t1, align 4 127 %agg.tmp = alloca %struct.t1, align 4 128 store i32 %t.coerce, ptr %t, align 4 129 call void @llvm.dbg.declare(metadata ptr %t, metadata !32, metadata !16), !dbg !33 130 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %t, i64 4, i1 false), !dbg !34 131 %0 = load i32, ptr %agg.tmp, align 4, !dbg !35 132 store i32 %0, ptr %t.i, align 4 133 call void @_Z1fv(), !dbg !36 134 ret void, !dbg !37 135} 136 137!llvm.dbg.cu = !{!0, !3} 138!llvm.ident = !{!5, !5} 139!llvm.module.flags = !{!6, !7} 140 141!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: true) 142!1 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch") 143!2 = !{} 144!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: true) 145!4 = !DIFile(filename: "bar.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch") 146!5 = !{!"clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)"} 147!6 = !{i32 2, !"Dwarf Version", i32 4} 148!7 = !{i32 2, !"Debug Info Version", i32 3} 149!8 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f12t1", scope: !1, file: !1, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) 150!9 = !DISubroutineType(types: !10) 151!10 = !{null, !11} 152!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !1, line: 1, size: 32, elements: !12, identifier: "_ZTS2t1") 153!12 = !{!13} 154!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 1, baseType: !14, size: 32) 155!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 156!15 = !DILocalVariable(name: "t", arg: 1, scope: !8, file: !1, line: 3, type: !11) 157!16 = !DIExpression() 158!17 = !DILocation(line: 3, column: 43, scope: !8) 159!18 = !DILocation(line: 4, column: 3, scope: !8) 160!19 = !DILocation(line: 5, column: 1, scope: !8) 161!20 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foo2t1", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) 162!21 = !DILocation(line: 3, column: 43, scope: !8, inlinedAt: !22) 163!22 = distinct !DILocation(line: 7, column: 3, scope: !20) 164!23 = !DILocalVariable(name: "t", arg: 1, scope: !20, file: !1, line: 6, type: !11) 165!24 = !DILocation(line: 6, column: 13, scope: !20) 166!25 = !DILocation(line: 7, column: 6, scope: !20) 167!26 = !DILocation(line: 7, column: 3, scope: !20) 168!27 = !DILocation(line: 4, column: 3, scope: !8, inlinedAt: !22) 169!28 = !DILocation(line: 8, column: 1, scope: !20) 170!29 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bar2t1", scope: !4, file: !4, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !3, retainedNodes: !2) 171!30 = !DILocation(line: 3, column: 43, scope: !8, inlinedAt: !31) 172!31 = distinct !DILocation(line: 4, column: 3, scope: !29) 173!32 = !DILocalVariable(name: "t", arg: 1, scope: !29, file: !4, line: 3, type: !11) 174!33 = !DILocation(line: 3, column: 13, scope: !29) 175!34 = !DILocation(line: 4, column: 6, scope: !29) 176!35 = !DILocation(line: 4, column: 3, scope: !29) 177!36 = !DILocation(line: 4, column: 3, scope: !8, inlinedAt: !31) 178!37 = !DILocation(line: 5, column: 1, scope: !29) 179