1 ; REQUIRES: object-emission 2 ; 3 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu -O0 -filetype=obj < %s > %t 4 ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s 5 6 ; Test case derived from compiling the following source with clang -g: 7 ; 8 ; namespace pr14763 { 9 ; struct foo { 10 ; foo(const foo&); 11 ; }; 12 ; 13 ; foo func(foo f) { 14 ; return f; // reference 'f' for now because otherwise we hit another bug 15 ; } 16 ; 17 ; void sink(void*); 18 ; 19 ; void func2(bool b, foo g) { 20 ; if (b) 21 ; sink(&g); // reference 'f' for now because otherwise we hit another bug 22 ; } 23 ; } 24 25 ; CHECK: debug_info contents 26 ; The parameter is accessed indirectly (with a zero offset) from the second 27 ; register parameter. RDI is consumed by 'sret'. 28 ; CHECK: DW_TAG_subprogram 29 ; CHECK: DW_AT_name{{.*}} = "func" 30 ; CHECK: DW_TAG_formal_parameter 31 ; CHECK: DW_AT_location {{.*}} (DW_OP_breg4 RSI+0, DW_OP_deref) 32 ; CHECK-NOT: DW_TAG 33 ; CHECK: DW_AT_name{{.*}} = "f" 34 35 ; CHECK: DW_TAG_subprogram 36 ; CHECK: DW_AT_name{{.*}} = "func2" 37 ; CHECK: DW_TAG_formal_parameter 38 ; CHECK: DW_AT_location{{.*}}(DW_OP_fbreg +23) 39 ; CHECK: DW_TAG_formal_parameter 40 ; CHECK: DW_AT_location{{.*}}( 41 ; CHECK-NEXT: {{.*}}: DW_OP_breg4 RSI+0, DW_OP_deref 42 ; CHECK-NEXT: {{.*}}: DW_OP_breg7 RSP+8, DW_OP_deref, DW_OP_deref) 43 ; CHECK-NOT: DW_TAG 44 ; CHECK: DW_AT_name{{.*}} = "g" 45 46 %"struct.pr14763::foo" = type { i8 } 47 48 ; Function Attrs: uwtable 49 define void @_ZN7pr147634funcENS_3fooE(%"struct.pr14763::foo"* noalias sret %agg.result, %"struct.pr14763::foo"* %f) #0 !dbg !4 { 50 entry: 51 call void @llvm.dbg.declare(metadata %"struct.pr14763::foo"* %f, metadata !22, metadata !DIExpression(DW_OP_deref)), !dbg !24 52 call void @_ZN7pr147633fooC1ERKS0_(%"struct.pr14763::foo"* %agg.result, %"struct.pr14763::foo"* %f), !dbg !25 53 ret void, !dbg !25 54 } 55 56 ; Function Attrs: nounwind readnone 57 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 58 59 declare void @_ZN7pr147633fooC1ERKS0_(%"struct.pr14763::foo"*, %"struct.pr14763::foo"*) #2 60 61 ; Function Attrs: uwtable 62 define void @_ZN7pr147635func2EbNS_3fooE(i1 zeroext %b, %"struct.pr14763::foo"* %g) #0 !dbg !17 { 63 entry: 64 %b.addr = alloca i8, align 1 65 %frombool = zext i1 %b to i8 66 store i8 %frombool, i8* %b.addr, align 1 67 call void @llvm.dbg.declare(metadata i8* %b.addr, metadata !26, metadata !DIExpression()), !dbg !27 68 call void @llvm.dbg.declare(metadata %"struct.pr14763::foo"* %g, metadata !28, metadata !DIExpression(DW_OP_deref)), !dbg !27 69 %0 = load i8, i8* %b.addr, align 1, !dbg !29 70 %tobool = trunc i8 %0 to i1, !dbg !29 71 br i1 %tobool, label %if.then, label %if.end, !dbg !29 72 73 if.then: ; preds = %entry 74 %1 = bitcast %"struct.pr14763::foo"* %g to i8*, !dbg !31 75 call void @_ZN7pr147634sinkEPv(i8* %1), !dbg !31 76 br label %if.end, !dbg !31 77 78 if.end: ; preds = %if.then, %entry 79 ret void, !dbg !32 80 } 81 82 declare void @_ZN7pr147634sinkEPv(i8*) 83 84 attributes #0 = { uwtable } 85 attributes #1 = { nounwind readnone } 86 87 !llvm.dbg.cu = !{!0} 88 !llvm.module.flags = !{!21, !33} 89 90 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 91 !1 = !DIFile(filename: "pass.cpp", directory: "/tmp") 92 !2 = !{} 93 !4 = distinct !DISubprogram(name: "func", linkageName: "_ZN7pr147634funcENS_3fooE", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 6, file: !1, scope: !5, type: !6, retainedNodes: !2) 94 !5 = !DINamespace(name: "pr14763", scope: null) 95 !6 = !DISubroutineType(types: !7) 96 !7 = !{!8, !8} 97 !8 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 2, size: 8, align: 8, file: !1, scope: !5, elements: !9) 98 !9 = !{!10} 99 !10 = !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !8, type: !11) 100 !11 = !DISubroutineType(types: !12) 101 !12 = !{null, !13, !14} 102 !13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8) 103 !14 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !15) 104 !15 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8) 105 !17 = distinct !DISubprogram(name: "func2", linkageName: "_ZN7pr147635func2EbNS_3fooE", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 12, file: !1, scope: !5, type: !18, retainedNodes: !2) 106 !18 = !DISubroutineType(types: !19) 107 !19 = !{null, !20, !8} 108 !20 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean) 109 !21 = !{i32 2, !"Dwarf Version", i32 3} 110 !22 = !DILocalVariable(name: "f", line: 6, arg: 1, scope: !4, file: !23, type: !8) 111 !23 = !DIFile(filename: "pass.cpp", directory: "/tmp") 112 !24 = !DILocation(line: 6, scope: !4) 113 !25 = !DILocation(line: 7, scope: !4) 114 !26 = !DILocalVariable(name: "b", line: 12, arg: 1, scope: !17, file: !23, type: !20) 115 !27 = !DILocation(line: 12, scope: !17) 116 !28 = !DILocalVariable(name: "g", line: 12, arg: 2, scope: !17, file: !23, type: !8) 117 !29 = !DILocation(line: 13, scope: !30) 118 !30 = distinct !DILexicalBlock(line: 13, column: 0, file: !1, scope: !17) 119 !31 = !DILocation(line: 14, scope: !30) 120 !32 = !DILocation(line: 15, scope: !17) 121 !33 = !{i32 1, !"Debug Info Version", i32 3} 122
