1 ; REQUIRES: object-emission 2 3 ; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=Enable < %s | llvm-dwarfdump -debug-dump=info - | FileCheck -implicit-check-not=DW_TAG %s 4 ; RUN: %llc_dwarf -dwarf-accel-tables=Enable -dwarf-linkage-names=Enable -O0 -filetype=obj < %s | llvm-dwarfdump - | FileCheck --check-prefix=CHECK-ACCEL --check-prefix=CHECK %s 5 6 ; Build from source: 7 ; $ clang++ a.cpp b.cpp -g -c -emit-llvm 8 ; $ llvm-link a.bc b.bc -o ab.bc 9 ; $ opt -inline ab.bc -o ab-opt.bc 10 ; $ cat a.cpp 11 ; extern int i; 12 ; int func(int); 13 ; int main() { 14 ; return func(i); 15 ; } 16 ; $ cat b.cpp 17 ; int __attribute__((always_inline)) func(int x) { 18 ; return x * 2; 19 ; } 20 21 ; Ensure that func inlined into main is described and references the abstract 22 ; definition in b.cpp's CU. 23 24 ; CHECK: DW_TAG_compile_unit 25 ; CHECK: DW_AT_name {{.*}} "a.cpp" 26 ; CHECK: DW_TAG_subprogram 27 ; CHECK: DW_AT_type [DW_FORM_ref_addr] (0x00000000[[INT:.*]]) 28 ; CHECK: 0x[[INLINED:[0-9a-f]*]]:{{.*}}DW_TAG_inlined_subroutine 29 ; CHECK: DW_AT_abstract_origin {{.*}}[[ABS_FUNC:........]] "_Z4funci" 30 ; CHECK: DW_TAG_formal_parameter 31 ; CHECK: DW_AT_abstract_origin {{.*}}[[ABS_VAR:........]] "x" 32 33 ; Check the abstract definition is in the 'b.cpp' CU and doesn't contain any 34 ; concrete information (address range or variable location) 35 ; CHECK: DW_TAG_compile_unit 36 ; CHECK: DW_AT_name {{.*}} "b.cpp" 37 ; CHECK: 0x[[ABS_FUNC]]: DW_TAG_subprogram 38 ; CHECK-NOT: DW_AT_low_pc 39 ; CHECK: 0x[[ABS_VAR]]: DW_TAG_formal_parameter 40 ; CHECK-NOT: DW_AT_location 41 ; CHECK: DW_AT_type [DW_FORM_ref4] {{.*}} {0x[[INT]]} 42 ; CHECK-NOT: DW_AT_location 43 44 ; CHECK: 0x[[INT]]: DW_TAG_base_type 45 ; CHECK: DW_AT_name {{.*}} "int" 46 47 ; Check the concrete out of line definition references the abstract and 48 ; provides the address range and variable location 49 ; CHECK: 0x[[FUNC:[0-9a-f]*]]{{.*}}DW_TAG_subprogram 50 ; CHECK: DW_AT_low_pc 51 ; CHECK: DW_AT_abstract_origin {{.*}} {0x[[ABS_FUNC]]} "_Z4funci" 52 ; CHECK: DW_TAG_formal_parameter 53 ; CHECK: DW_AT_location 54 ; CHECK: DW_AT_abstract_origin {{.*}} {0x[[ABS_VAR]]} "x" 55 56 ; Check that both the inline and the non out of line version of func are 57 ; correctly referenced in the accelerator table. Before r221837, the one 58 ; in the second compilation unit had a wrong offset 59 ; CHECK-ACCEL: .apple_names contents: 60 ; CHECK-ACCEL: Name{{.*}}"func" 61 ; CHECK-ACCEL-NOT: Name 62 ; CHECK-ACCEL: Atom[0]{{.*}}[[INLINED]] 63 ; CHECK-ACCEL-NOT: Name 64 ; CHECK-ACCEL: Atom[0]{{.*}}[[FUNC]] 65 66 @i = external global i32 67 68 ; Function Attrs: uwtable 69 define i32 @main() #0 !dbg !4 { 70 entry: 71 %x.addr.i = alloca i32, align 4 72 %retval = alloca i32, align 4 73 store i32 0, i32* %retval 74 %0 = load i32, i32* @i, align 4, !dbg !19 75 %1 = bitcast i32* %x.addr.i to i8* 76 call void @llvm.lifetime.start(i64 4, i8* %1) 77 store i32 %0, i32* %x.addr.i, align 4 78 call void @llvm.dbg.declare(metadata i32* %x.addr.i, metadata !120, metadata !DIExpression()), !dbg !21 79 %2 = load i32, i32* %x.addr.i, align 4, !dbg !22 80 %mul.i = mul nsw i32 %2, 2, !dbg !22 81 %3 = bitcast i32* %x.addr.i to i8*, !dbg !22 82 call void @llvm.lifetime.end(i64 4, i8* %3), !dbg !22 83 ret i32 %mul.i, !dbg !19 84 } 85 86 ; Function Attrs: alwaysinline nounwind uwtable 87 define i32 @_Z4funci(i32 %x) #1 !dbg !12 { 88 entry: 89 %x.addr = alloca i32, align 4 90 store i32 %x, i32* %x.addr, align 4 91 call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !20, metadata !DIExpression()), !dbg !23 92 %0 = load i32, i32* %x.addr, align 4, !dbg !24 93 %mul = mul nsw i32 %0, 2, !dbg !24 94 ret i32 %mul, !dbg !24 95 } 96 97 ; Function Attrs: nounwind readnone 98 declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 99 100 ; Function Attrs: nounwind 101 declare void @llvm.lifetime.start(i64, i8* nocapture) #3 102 103 ; Function Attrs: nounwind 104 declare void @llvm.lifetime.end(i64, i8* nocapture) #3 105 106 attributes #0 = { uwtable "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" } 107 attributes #1 = { alwaysinline nounwind uwtable "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" } 108 attributes #2 = { nounwind readnone } 109 attributes #3 = { nounwind } 110 111 !llvm.dbg.cu = !{!0, !9} 112 !llvm.module.flags = !{!16, !17} 113 !llvm.ident = !{!18, !18} 114 115 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 116 !1 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo") 117 !2 = !{} 118 !3 = !{!4} 119 !4 = distinct !DISubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2) 120 !5 = !DIFile(filename: "a.cpp", directory: "/tmp/dbginfo") 121 !6 = !DISubroutineType(types: !7) 122 !7 = !{!8} 123 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 124 !9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !10, enums: !2, retainedTypes: !2, subprograms: !11, globals: !2, imports: !2) 125 !10 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo") 126 !11 = !{!12} 127 !12 = distinct !DISubprogram(name: "func", linkageName: "_Z4funci", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !10, scope: !13, type: !14, variables: !2) 128 !13 = !DIFile(filename: "b.cpp", directory: "/tmp/dbginfo") 129 !14 = !DISubroutineType(types: !15) 130 !15 = !{!8, !8} 131 !16 = !{i32 2, !"Dwarf Version", i32 4} 132 !17 = !{i32 2, !"Debug Info Version", i32 3} 133 !18 = !{!"clang version 3.5.0 "} 134 !19 = !DILocation(line: 4, scope: !4) 135 !20 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8) 136 137 !120 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !12, file: !13, type: !8) 138 139 !21 = !DILocation(line: 1, scope: !12, inlinedAt: !19) 140 !22 = !DILocation(line: 2, scope: !12, inlinedAt: !19) 141 !23 = !DILocation(line: 1, scope: !12) 142 !24 = !DILocation(line: 2, scope: !12) 143 144
