1 ; REQUIRES: object-emission
3 ; RUN: %llc_dwarf -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
5 ; This isn't a very pretty test case - I imagine there might be other ways to
6 ; tickle the optimizers into producing the desired code, but I haven't found
9 ; The issue is when a function is inlined into itself, the inlined argument
10 ; accidentally overwrote the concrete argument and was lost.
12 ; IR generated from the following source compiled with clang -g:
14 ; void fn2(int, int, int, int);
21 ; if (b) fn2(0, 0, 0, 0);
26 ; inline void fn7() {}
32 ; void fn3() { fn6(); }
33 ; void fn4() { x->m_fn2(); }
34 ; void fn5() { x->m_fn2(); }
36 ; The definition of C and declaration of C::m_fn2
37 ; CHECK: DW_TAG_structure_type
38 ; CHECK-NOT: {{DW_TAG|NULL}}
39 ; CHECK: DW_TAG_member
40 ; CHECK-NOT: {{DW_TAG|NULL}}
41 ; CHECK: DW_TAG_subprogram
43 ; CHECK: DW_AT_name {{.*}} "m_fn2"
44 ; CHECK-NOT: {{DW_TAG|NULL}}
45 ; CHECK: [[M_FN2_THIS_DECL:.*]]: DW_TAG_formal_parameter
47 ; The abstract definition of C::m_fn2
48 ; CHECK: [[M_FN2_ABS_DEF:.*]]: DW_TAG_subprogram
50 ; CHECK: DW_AT_specification {{.*}} "_ZN1C5m_fn2Ev"
53 ; CHECK-NOT: {{DW_TAG|NULL}}
54 ; CHECK: [[M_FN2_THIS_ABS_DEF:.*]]: DW_TAG_formal_parameter
56 ; CHECK: DW_AT_name {{.*}} "this"
58 ; Skip some other functions
59 ; CHECK: DW_TAG_subprogram
60 ; CHECK: DW_TAG_subprogram
61 ; CHECK: DW_TAG_subprogram
63 ; The concrete definition of C::m_fn2
64 ; CHECK: DW_TAG_subprogram
66 ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_ABS_DEF]]} "_ZN1C5m_fn2Ev"
67 ; CHECK-NOT: {{DW_TAG|NULL}}
68 ; CHECK: DW_TAG_formal_parameter
70 ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_THIS_ABS_DEF]]}
71 ; CHECK-NOT: {{DW_TAG|NULL}}
73 ; CHECK: DW_TAG_inlined_subroutine
74 ; CHECK-NOT: {{DW_TAG|NULL}}
76 ; CHECK: DW_TAG_inlined_subroutine
77 ; CHECK-NOT: {{DW_TAG|NULL}}
79 ; CHECK: DW_TAG_inlined_subroutine
81 ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_ABS_DEF]]} "_ZN1C5m_fn2Ev"
82 ; CHECK-NOT: {{DW_TAG|NULL}}
83 ; CHECK: DW_TAG_formal_parameter
85 ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_THIS_ABS_DEF]]}
89 %struct.C = type { i32 }
91 @x = global %struct.C* null, align 8
93 ; Function Attrs: nounwind
94 define void @_Z3fn6v() #0 {
96 tail call void @_Z3fn8v() #3, !dbg !31
97 %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !32, !tbaa !33
98 tail call void @llvm.dbg.value(metadata %struct.C* %0, i64 0, metadata !37, metadata !{!"0x102"}) #3, !dbg !38
99 tail call void @_Z3fn8v() #3, !dbg !39
100 %b.i = getelementptr inbounds %struct.C, %struct.C* %0, i64 0, i32 0, !dbg !40
101 %1 = load i32, i32* %b.i, align 4, !dbg !40, !tbaa !42
102 %tobool.i = icmp eq i32 %1, 0, !dbg !40
103 br i1 %tobool.i, label %_ZN1C5m_fn2Ev.exit, label %if.then.i, !dbg !40
105 if.then.i: ; preds = %entry
106 tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !45
107 br label %_ZN1C5m_fn2Ev.exit, !dbg !45
109 _ZN1C5m_fn2Ev.exit: ; preds = %entry, %if.then.i
110 tail call void @_Z3fn3v() #3, !dbg !47
114 declare void @_Z3fn8v() #1
116 ; Function Attrs: nounwind
117 define linkonce_odr void @_ZN1C5m_fn2Ev(%struct.C* nocapture readonly %this) #0 align 2 {
119 tail call void @llvm.dbg.value(metadata %struct.C* %this, i64 0, metadata !24, metadata !{!"0x102"}), !dbg !49
120 tail call void @_Z3fn8v() #3, !dbg !50
121 %b = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 0, !dbg !51
122 %0 = load i32, i32* %b, align 4, !dbg !51, !tbaa !42
123 %tobool = icmp eq i32 %0, 0, !dbg !51
124 br i1 %tobool, label %if.end, label %if.then, !dbg !51
126 if.then: ; preds = %entry
127 tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !52
128 br label %if.end, !dbg !52
130 if.end: ; preds = %entry, %if.then
131 tail call void @_Z3fn8v() #3, !dbg !53
132 %1 = load %struct.C*, %struct.C** @x, align 8, !dbg !56, !tbaa !33
133 tail call void @llvm.dbg.value(metadata %struct.C* %1, i64 0, metadata !57, metadata !{!"0x102"}) #3, !dbg !58
134 tail call void @_Z3fn8v() #3, !dbg !59
135 %b.i.i = getelementptr inbounds %struct.C, %struct.C* %1, i64 0, i32 0, !dbg !60
136 %2 = load i32, i32* %b.i.i, align 4, !dbg !60, !tbaa !42
137 %tobool.i.i = icmp eq i32 %2, 0, !dbg !60
138 br i1 %tobool.i.i, label %_Z3fn6v.exit, label %if.then.i.i, !dbg !60
140 if.then.i.i: ; preds = %if.end
141 tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !61
142 br label %_Z3fn6v.exit, !dbg !61
144 _Z3fn6v.exit: ; preds = %if.end, %if.then.i.i
145 tail call void @_Z3fn3v() #3, !dbg !62
149 ; Function Attrs: nounwind
150 define void @_Z3fn3v() #0 {
152 br label %tailrecurse
154 tailrecurse: ; preds = %tailrecurse.backedge, %entry
155 tail call void @_Z3fn8v() #3, !dbg !64
156 %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !66, !tbaa !33
157 tail call void @llvm.dbg.value(metadata %struct.C* %0, i64 0, metadata !67, metadata !{!"0x102"}) #3, !dbg !68
158 tail call void @_Z3fn8v() #3, !dbg !69
159 %b.i.i = getelementptr inbounds %struct.C, %struct.C* %0, i64 0, i32 0, !dbg !70
160 %1 = load i32, i32* %b.i.i, align 4, !dbg !70, !tbaa !42
161 %tobool.i.i = icmp eq i32 %1, 0, !dbg !70
162 br i1 %tobool.i.i, label %tailrecurse.backedge, label %if.then.i.i, !dbg !70
164 tailrecurse.backedge: ; preds = %tailrecurse, %if.then.i.i
165 br label %tailrecurse
167 if.then.i.i: ; preds = %tailrecurse
168 tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !71
169 br label %tailrecurse.backedge, !dbg !71
172 ; Function Attrs: nounwind
173 define void @_Z3fn4v() #0 {
175 %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !72, !tbaa !33
176 tail call void @_ZN1C5m_fn2Ev(%struct.C* %0), !dbg !72
180 ; Function Attrs: nounwind
181 define void @_Z3fn5v() #0 {
183 %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !73, !tbaa !33
184 tail call void @_ZN1C5m_fn2Ev(%struct.C* %0), !dbg !73
188 declare void @_Z3fn2iiii(i32, i32, i32, i32) #1
190 ; Function Attrs: nounwind readnone
191 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
193 attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
194 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
195 attributes #2 = { nounwind readnone }
196 attributes #3 = { nounwind }
199 !llvm.module.flags = !{!28, !29}
202 !0 = !{!"0x11\004\00clang version 3.6.0 \001\00\000\00\001", !1, !2, !3, !13, !26, !2} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/<stdin>] [DW_LANG_C_plus_plus]
203 !1 = !{!"<stdin>", !"/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce"}
206 !4 = !{!"0x13\00C\005\0032\0032\000\000\000", !5, null, null, !6, null, null, !"_ZTS1C"} ; [ DW_TAG_structure_type ] [C] [line 5, size 32, align 32, offset 0] [def] [from ]
207 !5 = !{!"recursive_inlining.cpp", !"/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce"}
209 !7 = !{!"0xd\00b\006\0032\0032\000\000", !5, !"_ZTS1C", !8} ; [ DW_TAG_member ] [b] [line 6, size 32, align 32, offset 0] [from int]
210 !8 = !{!"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]
211 !9 = !{!"0x2e\00m_fn2\00m_fn2\00_ZN1C5m_fn2Ev\007\000\000\000\006\00256\001\007", !5, !"_ZTS1C", !10, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 7] [m_fn2]
212 !10 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
214 !12 = !{!"0xf\00\000\0064\0064\000\001088", null, null, !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]
215 !13 = !{!14, !18, !19, !20, !21, !22}
216 !14 = !{!"0x2e\00fn6\00fn6\00_Z3fn6v\0015\000\001\000\006\00256\001\0015", !5, !15, !16, null, void ()* @_Z3fn6v, null, null, !2} ; [ DW_TAG_subprogram ] [line 15] [def] [fn6]
217 !15 = !{!"0x29", !5} ; [ DW_TAG_file_type ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/recursive_inlining.cpp]
218 !16 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !17, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
220 !18 = !{!"0x2e\00fn3\00fn3\00_Z3fn3v\0020\000\001\000\006\00256\001\0020", !5, !15, !16, null, void ()* @_Z3fn3v, null, null, !2} ; [ DW_TAG_subprogram ] [line 20] [def] [fn3]
221 !19 = !{!"0x2e\00fn4\00fn4\00_Z3fn4v\0021\000\001\000\006\00256\001\0021", !5, !15, !16, null, void ()* @_Z3fn4v, null, null, !2} ; [ DW_TAG_subprogram ] [line 21] [def] [fn4]
222 !20 = !{!"0x2e\00fn5\00fn5\00_Z3fn5v\0022\000\001\000\006\00256\001\0022", !5, !15, !16, null, void ()* @_Z3fn5v, null, null, !2} ; [ DW_TAG_subprogram ] [line 22] [def] [fn5]
223 !21 = !{!"0x2e\00fn7\00fn7\00_Z3fn7v\0014\000\001\000\006\00256\001\0014", !5, !15, !16, null, null, null, null, !2} ; [ DW_TAG_subprogram ] [line 14] [def] [fn7]
224 !22 = !{!"0x2e\00m_fn2\00m_fn2\00_ZN1C5m_fn2Ev\007\000\001\000\006\00256\001\007", !5, !"_ZTS1C", !10, null, void (%struct.C*)* @_ZN1C5m_fn2Ev, null, !9, !23} ; [ DW_TAG_subprogram ] [line 7] [def] [m_fn2]
226 !24 = !{!"0x101\00this\0016777216\001088", !22, null, !25} ; [ DW_TAG_arg_variable ] [this] [line 0]
227 !25 = !{!"0xf\00\000\0064\0064\000\000", null, null, !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1C]
229 !27 = !{!"0x34\00x\00x\00\0013\000\001", null, !15, !25, %struct.C** @x, null} ; [ DW_TAG_variable ] [x] [line 13] [def]
230 !28 = !{i32 2, !"Dwarf Version", i32 4}
231 !29 = !{i32 2, !"Debug Info Version", i32 2}
232 !30 = !{!"clang version 3.6.0 "}
233 !31 = !MDLocation(line: 16, scope: !14)
234 !32 = !MDLocation(line: 17, scope: !14)
235 !33 = !{!34, !34, i64 0}
236 !34 = !{!"any pointer", !35, i64 0}
237 !35 = !{!"omnipotent char", !36, i64 0}
238 !36 = !{!"Simple C/C++ TBAA"}
239 !37 = !{!"0x101\00this\0016777216\001088", !22, null, !25, !32} ; [ DW_TAG_arg_variable ] [this] [line 0]
240 !38 = !MDLocation(line: 0, scope: !22, inlinedAt: !32)
241 !39 = !MDLocation(line: 8, scope: !22, inlinedAt: !32)
242 !40 = !MDLocation(line: 9, scope: !41, inlinedAt: !32)
243 !41 = !{!"0xb\009\000\000", !5, !22} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/recursive_inlining.cpp]
244 !42 = !{!43, !44, i64 0}
245 !43 = !{!"_ZTS1C", !44, i64 0}
246 !44 = !{!"int", !35, i64 0}
247 !45 = !MDLocation(line: 9, scope: !46, inlinedAt: !32)
248 !46 = !{!"0xb\009\000\001", !5, !41} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/recursive_inlining.cpp]
249 !47 = !MDLocation(line: 10, scope: !22, inlinedAt: !32)
250 !48 = !MDLocation(line: 19, scope: !14)
251 !49 = !MDLocation(line: 0, scope: !22)
252 !50 = !MDLocation(line: 8, scope: !22)
253 !51 = !MDLocation(line: 9, scope: !41)
254 !52 = !MDLocation(line: 9, scope: !46)
255 !53 = !MDLocation(line: 16, scope: !14, inlinedAt: !54)
256 !54 = !MDLocation(line: 20, scope: !18, inlinedAt: !55)
257 !55 = !MDLocation(line: 10, scope: !22)
258 !56 = !MDLocation(line: 17, scope: !14, inlinedAt: !54)
259 !57 = !{!"0x101\00this\0016777216\001088", !22, null, !25, !56} ; [ DW_TAG_arg_variable ] [this] [line 0]
260 !58 = !MDLocation(line: 0, scope: !22, inlinedAt: !56)
261 !59 = !MDLocation(line: 8, scope: !22, inlinedAt: !56)
262 !60 = !MDLocation(line: 9, scope: !41, inlinedAt: !56)
263 !61 = !MDLocation(line: 9, scope: !46, inlinedAt: !56)
264 !62 = !MDLocation(line: 10, scope: !22, inlinedAt: !56)
265 !63 = !MDLocation(line: 11, scope: !22)
266 !64 = !MDLocation(line: 16, scope: !14, inlinedAt: !65)
267 !65 = !MDLocation(line: 20, scope: !18)
268 !66 = !MDLocation(line: 17, scope: !14, inlinedAt: !65)
269 !67 = !{!"0x101\00this\0016777216\001088", !22, null, !25, !66} ; [ DW_TAG_arg_variable ] [this] [line 0]
270 !68 = !MDLocation(line: 0, scope: !22, inlinedAt: !66)
271 !69 = !MDLocation(line: 8, scope: !22, inlinedAt: !66)
272 !70 = !MDLocation(line: 9, scope: !41, inlinedAt: !66)
273 !71 = !MDLocation(line: 9, scope: !46, inlinedAt: !66)
274 !72 = !MDLocation(line: 21, scope: !19)
275 !73 = !MDLocation(line: 22, scope: !20)