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83
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1 ; REQUIRES: object-emission
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2
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3 ; Generated from the following source compiled with clang++ -gmlt:
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4 ; void f1() {}
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5 ; void __attribute__((section("__TEXT,__bar"))) f2() {}
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6 ; void __attribute__((always_inline)) f3() { f1(); }
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7 ; void f4() { f3(); }
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8
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9 ; Check that
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10 ; * -gmlt includes no DW_TAG_subprograms for subprograms without inlined
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11 ; subroutines.
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12 ; * yet still produces DW_AT_ranges and a range list in debug_ranges that
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13 ; describes those subprograms
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14
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15 ; CHECK: DW_TAG_compile_unit
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16 ; CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x00000000
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17 ; CHECK-NOT: {{DW_TAG|NULL}}
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18
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19 ; Omitting the subprograms without inlined subroutines is not possible
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20 ; currently on Darwin as dsymutil will drop the whole CU if it has no subprograms
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21 ; (which happens with this optimization if there are no inlined subroutines).
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22
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23 ; DARWIN: DW_TAG_subprogram
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24 ; DARWIN-NOT: DW_TAG
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25 ; DARWIN: DW_AT_name {{.*}} "f1"
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26 ; DARWIN-NOT: {{DW_TAG|NULL}}
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27 ; DARWIN: DW_TAG_subprogram
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28 ; DARWIN-NOT: DW_TAG
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29 ; DARWIN: DW_AT_name {{.*}} "f2"
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30 ; DARWIN-NOT: {{DW_TAG|NULL}}
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31 ; DARWIN: DW_TAG_subprogram
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32 ; DARWIN-NOT: DW_TAG
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33 ; Can't check the abstract_origin value across the DARWIN/CHECK checking and
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34 ; ordering, so don't bother - just trust me, it refers to f3 down there.
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35 ; DARWIN: DW_AT_abstract_origin
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36 ; DARWIN-NOT: {{DW_TAG|NULL}}
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37
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38
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39 ; FIXME: Emitting separate abstract definitions is inefficient when we could
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40 ; just attach the DW_AT_name to the inlined_subroutine directly. Except that
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41 ; would produce many string relocations. Implement string indexing in the
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42 ; skeleton CU to address the relocation problem, then remove abstract
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43 ; definitions from -gmlt here.
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44
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45 ; CHECK: DW_TAG_subprogram
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46 ; CHECK-NEXT: DW_AT_name {{.*}} "f3"
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47
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48 ; FIXME: We don't really need DW_AT_inline, consumers can ignore this due to
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49 ; the absence of high_pc/low_pc/ranges and know that they just need it for
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50 ; retrieving the name of a concrete inlined instance
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51
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52 ; CHECK-NOT: {{DW_TAG|DW_AT|NULL}}
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53
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54 ; Check that we only provide the minimal attributes on a subprogram to save space.
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55 ; CHECK: DW_TAG_subprogram
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56 ; CHECK-NEXT: DW_AT_low_pc
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57 ; CHECK-NEXT: DW_AT_high_pc
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58 ; CHECK-NEXT: DW_AT_name
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59 ; CHECK-NOT: {{DW_TAG|DW_AT}}
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60 ; CHECK: DW_TAG_inlined_subroutine
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61
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62 ; As mentioned above - replace DW_AT_abstract_origin with DW_AT_name to save
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63 ; space once we have support for string indexing in non-dwo sections
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64
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65 ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "f3"
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66 ; CHECK-NEXT: DW_AT_low_pc
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67 ; CHECK-NEXT: DW_AT_high_pc
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68 ; CHECK-NEXT: DW_AT_call_file
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69 ; CHECK-NEXT: DW_AT_call_line
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70
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71 ; Make sure we don't have any other subprograms here (subprograms with no
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72 ; inlined subroutines are omitted by design to save space)
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73
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74 ; CHECK-NOT: {{DW_TAG|DW_AT}}
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75 ; CHECK: NULL
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76 ; CHECK-NOT: {{DW_TAG|DW_AT}}
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77 ; CHECK: NULL
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78
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79 ; CHECK: .debug_ranges contents:
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80
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81 ; ... some addresses (depends on platform (such as platforms with function
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82 ; reordering in the linker), and looks wonky on platforms with zero values
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83 ; written in relocation places (dumper needs to be fixed to read the
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84 ; relocations rather than interpret that as the end of a range list))
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85
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86 ; CHECK: 00000000 <End of list>
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87
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88
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89 ; Check that we don't emit any pubnames or pubtypes under -gmlt
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121
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90 ; CHECK-NOT: .debug_pubnames contents:
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91 ; CHECK-NOT: .debug_pubtypes contents:
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83
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92
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93 ; Function Attrs: nounwind uwtable
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100
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94 define void @_Z2f1v() #0 !dbg !4 {
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83
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95 entry:
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96 ret void, !dbg !13
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97 }
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98
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99 ; Function Attrs: nounwind uwtable
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100
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100 define void @_Z2f2v() #0 section "__TEXT,__bar" !dbg !7 {
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83
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101 entry:
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102 ret void, !dbg !14
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103 }
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104
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105 ; Function Attrs: alwaysinline nounwind uwtable
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100
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106 define void @_Z2f3v() #1 !dbg !8 {
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83
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107 entry:
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108 call void @_Z2f1v(), !dbg !15
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109 ret void, !dbg !16
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110 }
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111
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112 ; Function Attrs: nounwind uwtable
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100
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113 define void @_Z2f4v() #0 !dbg !9 {
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83
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114 entry:
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115 call void @_Z2f1v() #2, !dbg !17
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116 ret void, !dbg !19
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117 }
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118
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119 attributes #0 = { 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" }
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120 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" }
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121 attributes #2 = { nounwind }
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122
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123 !llvm.dbg.cu = !{!0}
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124 !llvm.module.flags = !{!10, !11}
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125 !llvm.ident = !{!12}
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126
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120
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127 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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95
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128 !1 = !DIFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo")
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83
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129 !2 = !{}
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120
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130 !4 = distinct !DISubprogram(name: "f1", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
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95
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131 !5 = !DIFile(filename: "gmlt.cpp", directory: "/tmp/dbginfo")
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132 !6 = !DISubroutineType(types: !2)
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120
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133 !7 = distinct !DISubprogram(name: "f2", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !2)
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134 !8 = distinct !DISubprogram(name: "f3", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !5, type: !6, variables: !2)
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135 !9 = distinct !DISubprogram(name: "f4", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 4, file: !1, scope: !5, type: !6, variables: !2)
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83
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136 !10 = !{i32 2, !"Dwarf Version", i32 4}
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95
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137 !11 = !{i32 2, !"Debug Info Version", i32 3}
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83
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138 !12 = !{!"clang version 3.6.0 "}
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95
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139 !13 = !DILocation(line: 1, column: 12, scope: !4)
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140 !14 = !DILocation(line: 2, column: 53, scope: !7)
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141 !15 = !DILocation(line: 3, column: 44, scope: !8)
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142 !16 = !DILocation(line: 3, column: 50, scope: !8)
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143 !17 = !DILocation(line: 3, column: 44, scope: !8, inlinedAt: !18)
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144 !18 = !DILocation(line: 4, column: 13, scope: !9)
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145 !19 = !DILocation(line: 4, column: 19, scope: !9)
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