1 ; REQUIRES: object-emission
3 ; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
5 ; The formal parameter 'b' for Function 'x' when inlined within 'a' is lost on
6 ; mips and powerpc64 (and on x86_64 at at least -O2). Presumably this is a
7 ; SelectionDAG issue (do mips/powerpc64 use FastISel?).
8 ; XFAIL: mips, powerpc64, s390x
10 ; Build from the following source with clang -O2.
12 ; The important details are that 'x's abstract definition is first built during
13 ; the definition of 'b', where the parameter to 'x' is constant and so 'x's 's'
14 ; variable is optimized away. No abstract definition DIE for 's' is constructed.
15 ; Then, during 'a' emission, the abstract DbgVariable for 's' is created, but
16 ; the abstract DIE isn't (since the abstract definition for 'b' is already
17 ; built). This results in 's' inlined in 'a' being emitted with its name, line,
18 ; file there, rather than referencing an abstract definition.
24 ; inline void x(bool b) {
40 ; CHECK: DW_TAG_subprogram
42 ; CHECK: DW_AT_name {{.*}} "x"
43 ; CHECK-NOT: {{DW_TAG|NULL}}
44 ; CHECK: DW_TAG_formal_parameter
46 ; CHECK: DW_AT_name {{.*}} "b"
47 ; CHECK-NOT: {{DW_TAG|NULL}}
48 ; CHECK: DW_TAG_lexical_block
49 ; CHECK-NOT: {{DW_TAG|NULL}}
50 ; CHECK: DW_TAG_variable
52 ; CHECK: DW_AT_name {{.*}} "s"
54 ; CHECK: DW_TAG_subprogram
56 ; CHECK: DW_AT_name {{.*}} "b"
57 ; CHECK-NOT: {{DW_TAG|NULL}}
58 ; CHECK: DW_TAG_inlined_subroutine
60 ; CHECK: DW_AT_abstract_origin {{.*}} "_Z1xb"
61 ; CHECK-NOT: {{DW_TAG|NULL}}
62 ; CHECK: DW_TAG_formal_parameter
64 ; CHECK: DW_AT_abstract_origin {{.*}} "b"
65 ; Notice 'x's local variable 's' is missing. Not necessarily a bug here,
66 ; since it's been optimized entirely away and it should be described in
67 ; abstract subprogram.
73 ; CHECK: DW_TAG_subprogram
75 ; CHECK: DW_AT_name {{.*}} "a"
76 ; CHECK-NOT: {{DW_TAG|NULL}}
77 ; CHECK: DW_TAG_formal_parameter
78 ; CHECK-NOT: {{DW_TAG|NULL}}
79 ; CHECK: DW_TAG_inlined_subroutine
81 ; CHECK: DW_AT_abstract_origin {{.*}} "_Z1xb"
82 ; CHECK-NOT: {{DW_TAG|NULL}}
83 ; FIXME: This formal parameter goes missing at least at -O2 (& on
84 ; mips/powerpc), maybe before that. Perhaps SelectionDAG is to blame (and
86 ; CHECK: DW_TAG_formal_parameter
88 ; CHECK: DW_AT_abstract_origin {{.*}} "b"
90 ; CHECK-NOT: {{DW_TAG|NULL}}
91 ; CHECK: DW_TAG_lexical_block
92 ; CHECK-NOT: {{DW_TAG|NULL}}
93 ; CHECK: DW_TAG_variable
95 ; CHECK: DW_AT_abstract_origin {{.*}} "s"
97 @t = external global i32
99 ; Function Attrs: uwtable
100 define void @_Z1bv() #0 {
102 tail call void @llvm.dbg.value(metadata i1 false, i64 0, metadata !25, metadata !{!"0x102"}), !dbg !27
103 tail call void @_Z1fi(i32 0), !dbg !28
107 ; Function Attrs: uwtable
108 define void @_Z1ab(i1 zeroext %u) #0 {
110 tail call void @llvm.dbg.value(metadata i1 %u, i64 0, metadata !13, metadata !{!"0x102"}), !dbg !30
111 tail call void @llvm.dbg.value(metadata i1 %u, i64 0, metadata !31, metadata !{!"0x102"}), !dbg !33
112 br i1 %u, label %if.then.i, label %_Z1xb.exit, !dbg !34
114 if.then.i: ; preds = %entry
115 %0 = load i32* @t, align 4, !dbg !35, !tbaa !36
116 tail call void @llvm.dbg.value(metadata i32 %0, i64 0, metadata !40, metadata !{!"0x102"}), !dbg !35
117 tail call void @_Z1fi(i32 %0), !dbg !41
118 br label %_Z1xb.exit, !dbg !42
120 _Z1xb.exit: ; preds = %entry, %if.then.i
121 tail call void @_Z1fi(i32 0), !dbg !43
125 declare void @_Z1fi(i32) #1
127 ; Function Attrs: nounwind readnone
128 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
130 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" }
131 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" }
132 attributes #2 = { nounwind readnone }
135 !llvm.module.flags = !{!21, !22}
138 !0 = !{!"0x11\004\00clang version 3.5.0 \001\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/missing-abstract-variables.cc] [DW_LANG_C_plus_plus]
139 !1 = !{!"missing-abstract-variables.cc", !"/tmp/dbginfo"}
142 !4 = !{!"0x2e\00b\00b\00_Z1bv\0013\000\001\000\006\00256\001\0013", !1, !5, !6, null, void ()* @_Z1bv, null, null, !2} ; [ DW_TAG_subprogram ] [line 13] [def] [b]
143 !5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/missing-abstract-variables.cc]
144 !6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
146 !8 = !{!"0x2e\00a\00a\00_Z1ab\0017\000\001\000\006\00256\001\0017", !1, !5, !9, null, void (i1)* @_Z1ab, null, null, !12} ; [ DW_TAG_subprogram ] [line 17] [def] [a]
147 !9 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !10, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
149 !11 = !{!"0x24\00bool\000\008\008\000\000\002", null, null} ; [ DW_TAG_base_type ] [bool] [line 0, size 8, align 8, offset 0, enc DW_ATE_boolean]
151 !13 = !{!"0x101\00u\0016777233\000", !8, !5, !11} ; [ DW_TAG_arg_variable ] [u] [line 17]
152 !14 = !{!"0x2e\00x\00x\00_Z1xb\005\000\001\000\006\00256\001\005", !1, !5, !9, null, null, null, null, !15} ; [ DW_TAG_subprogram ] [line 5] [def] [x]
154 !16 = !{!"0x101\00b\0016777221\000", !14, !5, !11} ; [ DW_TAG_arg_variable ] [b] [line 5]
155 !17 = !{!"0x100\00s\007\000", !18, !5, !20} ; [ DW_TAG_auto_variable ] [s] [line 7]
156 !18 = !{!"0xb\006\000\000", !1, !19} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/missing-abstract-variables.cc]
157 !19 = !{!"0xb\006\000\000", !1, !14} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/missing-abstract-variables.cc]
158 !20 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
159 !21 = !{i32 2, !"Dwarf Version", i32 4}
160 !22 = !{i32 2, !"Debug Info Version", i32 2}
161 !23 = !{!"clang version 3.5.0 "}
163 !25 = !{!"0x101\00b\0016777221\000", !14, !5, !11, !26} ; [ DW_TAG_arg_variable ] [b] [line 5]
164 !26 = !MDLocation(line: 14, scope: !4)
165 !27 = !MDLocation(line: 5, scope: !14, inlinedAt: !26)
166 !28 = !MDLocation(line: 10, scope: !14, inlinedAt: !26)
167 !29 = !MDLocation(line: 15, scope: !4)
168 !30 = !MDLocation(line: 17, scope: !8)
169 !31 = !{!"0x101\00b\0016777221\000", !14, !5, !11, !32} ; [ DW_TAG_arg_variable ] [b] [line 5]
170 !32 = !MDLocation(line: 18, scope: !8)
171 !33 = !MDLocation(line: 5, scope: !14, inlinedAt: !32)
172 !34 = !MDLocation(line: 6, scope: !19, inlinedAt: !32)
173 !35 = !MDLocation(line: 7, scope: !18, inlinedAt: !32)
174 !36 = !{!37, !37, i64 0}
175 !37 = !{!"int", !38, i64 0}
176 !38 = !{!"omnipotent char", !39, i64 0}
177 !39 = !{!"Simple C/C++ TBAA"}
178 !40 = !{!"0x100\00s\007\000", !18, !5, !20, !32} ; [ DW_TAG_auto_variable ] [s] [line 7]
179 !41 = !MDLocation(line: 8, scope: !18, inlinedAt: !32)
180 !42 = !MDLocation(line: 9, scope: !18, inlinedAt: !32)
181 !43 = !MDLocation(line: 10, scope: !14, inlinedAt: !32)
182 !44 = !MDLocation(line: 19, scope: !8)