1 ; REQUIRES: object-emission
3 ; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
5 ; Build from the following source with clang -O2.
7 ; The important details are that 'x's abstract definition is first built during
8 ; the definition of 'b', where the parameter to 'x' is constant and so 'x's 's'
9 ; variable is optimized away. No abstract definition DIE for 's' is constructed.
10 ; Then, during 'a' emission, the abstract DbgVariable for 's' is created, but
11 ; the abstract DIE isn't (since the abstract definition for 'b' is already
12 ; built). This results in 's' inlined in 'a' being emitted with its name, line,
13 ; file there, rather than referencing an abstract definition.
19 ; inline void x(bool b) {
35 ; CHECK: [[ABS_X:.*]]: DW_TAG_subprogram
37 ; CHECK: DW_AT_name {{.*}} "x"
38 ; CHECK-NOT: {{DW_TAG|NULL}}
39 ; CHECK: [[ABS_B:.*]]: DW_TAG_formal_parameter
41 ; CHECK: DW_AT_name {{.*}} "b"
42 ; FIXME: Missing 'x's local 's' variable.
44 ; CHECK: DW_TAG_subprogram
46 ; CHECK: DW_AT_name {{.*}} "b"
47 ; CHECK-NOT: {{DW_TAG|NULL}}
48 ; CHECK: DW_TAG_inlined_subroutine
50 ; CHECK: DW_AT_abstract_origin {{.*}} {[[ABS_X]]}
51 ; CHECK-NOT: {{DW_TAG|NULL}}
52 ; CHECK: DW_TAG_formal_parameter
54 ; CHECK: DW_AT_abstract_origin {{.*}} {[[ABS_B]]}
55 ; Notice 'x's local variable 's' is missing. Not necessarily a bug here,
56 ; since it's been optimized entirely away and it should be described in
57 ; abstract subprogram.
63 ; CHECK: DW_TAG_subprogram
65 ; CHECK: DW_AT_name {{.*}} "a"
66 ; CHECK-NOT: {{DW_TAG|NULL}}
67 ; CHECK: DW_TAG_formal_parameter
68 ; CHECK-NOT: {{DW_TAG|NULL}}
69 ; CHECK: DW_TAG_inlined_subroutine
71 ; CHECK: DW_AT_abstract_origin {{.*}} {[[ABS_X]]}
72 ; CHECK-NOT: {{DW_TAG|NULL}}
73 ; FIXME: This formal parameter goes missing at least at -O2, maybe before that.
74 ; CHECK: DW_TAG_formal_parameter
76 ; CHECK: DW_AT_abstract_origin {{.*}} {[[ABS_B]]}
78 ; The two lexical blocks here are caused by the scope of the if that includes
79 ; the condition variable, and the scope within the if's composite statement. I'm
80 ; not sure we really need both of them.
82 ; CHECK-NOT: {{DW_TAG|NULL}}
83 ; CHECK: DW_TAG_lexical_block
84 ; CHECK-NOT: {{DW_TAG|NULL}}
85 ; CHECK: DW_TAG_lexical_block
86 ; CHECK-NOT: {{DW_TAG|NULL}}
87 ; CHECK: DW_TAG_variable
90 ; FIXME: This shouldn't have a name here, it should use DW_AT_abstract_origin
91 ; to reference an abstract variable definition instead
93 ; CHECK: DW_AT_name {{.*}} "s"
96 @t = external global i32
98 ; Function Attrs: uwtable
99 define void @_Z1bv() #0 {
101 tail call void @llvm.dbg.value(metadata !24, i64 0, metadata !25), !dbg !27
102 tail call void @_Z1fi(i32 0), !dbg !28
106 ; Function Attrs: uwtable
107 define void @_Z1ab(i1 zeroext %u) #0 {
109 tail call void @llvm.dbg.value(metadata !{i1 %u}, i64 0, metadata !13), !dbg !30
110 tail call void @llvm.dbg.value(metadata !{i1 %u}, i64 0, metadata !31), !dbg !33
111 br i1 %u, label %if.then.i, label %_Z1xb.exit, !dbg !34
113 if.then.i: ; preds = %entry
114 %0 = load i32* @t, align 4, !dbg !35, !tbaa !36
115 tail call void @llvm.dbg.value(metadata !{i32 %0}, i64 0, metadata !40), !dbg !35
116 tail call void @_Z1fi(i32 %0), !dbg !41
117 br label %_Z1xb.exit, !dbg !42
119 _Z1xb.exit: ; preds = %entry, %if.then.i
120 tail call void @_Z1fi(i32 0), !dbg !43
124 declare void @_Z1fi(i32) #1
126 ; Function Attrs: nounwind readnone
127 declare void @llvm.dbg.value(metadata, i64, metadata) #2
129 attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
130 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
131 attributes #2 = { nounwind readnone }
134 !llvm.module.flags = !{!21, !22}
137 !0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 ", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/missing-abstract-variables.cc] [DW_LANG_C_plus_plus]
138 !1 = metadata !{metadata !"missing-abstract-variables.cc", metadata !"/tmp/dbginfo"}
140 !3 = metadata !{metadata !4, metadata !8, metadata !14}
141 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"b", metadata !"b", metadata !"_Z1bv", i32 13, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void ()* @_Z1bv, null, null, metadata !2, i32 13} ; [ DW_TAG_subprogram ] [line 13] [def] [b]
142 !5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/missing-abstract-variables.cc]
143 !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 ]
144 !7 = metadata !{null}
145 !8 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"a", metadata !"a", metadata !"_Z1ab", i32 17, metadata !9, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i1)* @_Z1ab, null, null, metadata !12, i32 17} ; [ DW_TAG_subprogram ] [line 17] [def] [a]
146 !9 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !10, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
147 !10 = metadata !{null, metadata !11}
148 !11 = metadata !{i32 786468, null, null, metadata !"bool", i32 0, i64 8, i64 8, i64 0, i32 0, i32 2} ; [ DW_TAG_base_type ] [bool] [line 0, size 8, align 8, offset 0, enc DW_ATE_boolean]
149 !12 = metadata !{metadata !13}
150 !13 = metadata !{i32 786689, metadata !8, metadata !"u", metadata !5, i32 16777233, metadata !11, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [u] [line 17]
151 !14 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"x", metadata !"x", metadata !"_Z1xb", i32 5, metadata !9, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, null, null, null, metadata !15, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [x]
152 !15 = metadata !{metadata !16, metadata !17}
153 !16 = metadata !{i32 786689, metadata !14, metadata !"b", metadata !5, i32 16777221, metadata !11, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [b] [line 5]
154 !17 = metadata !{i32 786688, metadata !18, metadata !"s", metadata !5, i32 7, metadata !20, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [s] [line 7]
155 !18 = metadata !{i32 786443, metadata !1, metadata !19, i32 6, i32 0, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/missing-abstract-variables.cc]
156 !19 = metadata !{i32 786443, metadata !1, metadata !14, i32 6, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/missing-abstract-variables.cc]
157 !20 = 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]
158 !21 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
159 !22 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
160 !23 = metadata !{metadata !"clang version 3.5.0 "}
161 !24 = metadata !{i1 false}
162 !25 = metadata !{i32 786689, metadata !14, metadata !"b", metadata !5, i32 16777221, metadata !11, i32 0, metadata !26} ; [ DW_TAG_arg_variable ] [b] [line 5]
163 !26 = metadata !{i32 14, i32 0, metadata !4, null}
164 !27 = metadata !{i32 5, i32 0, metadata !14, metadata !26}
165 !28 = metadata !{i32 10, i32 0, metadata !14, metadata !26}
166 !29 = metadata !{i32 15, i32 0, metadata !4, null}
167 !30 = metadata !{i32 17, i32 0, metadata !8, null}
168 !31 = metadata !{i32 786689, metadata !14, metadata !"b", metadata !5, i32 16777221, metadata !11, i32 0, metadata !32} ; [ DW_TAG_arg_variable ] [b] [line 5]
169 !32 = metadata !{i32 18, i32 0, metadata !8, null}
170 !33 = metadata !{i32 5, i32 0, metadata !14, metadata !32}
171 !34 = metadata !{i32 6, i32 0, metadata !19, metadata !32}
172 !35 = metadata !{i32 7, i32 0, metadata !18, metadata !32}
173 !36 = metadata !{metadata !37, metadata !37, i64 0}
174 !37 = metadata !{metadata !"int", metadata !38, i64 0}
175 !38 = metadata !{metadata !"omnipotent char", metadata !39, i64 0}
176 !39 = metadata !{metadata !"Simple C/C++ TBAA"}
177 !40 = metadata !{i32 786688, metadata !18, metadata !"s", metadata !5, i32 7, metadata !20, i32 0, metadata !32} ; [ DW_TAG_auto_variable ] [s] [line 7]
178 !41 = metadata !{i32 8, i32 0, metadata !18, metadata !32} ; [ DW_TAG_imported_declaration ]
179 !42 = metadata !{i32 9, i32 0, metadata !18, metadata !32}
180 !43 = metadata !{i32 10, i32 0, metadata !14, metadata !32}
181 !44 = metadata !{i32 19, i32 0, metadata !8, null}