1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
;
; PR22296: In this testcase the DBG_VALUE describing "p5" becomes unavailable
; because the register its address is in is clobbered and we (currently) aren't
; smart enough to realize that the value is rematerialized immediately after the
; DBG_VALUE and/or is actually a stack slot.
;
; Test that we handle this situation gracefully by omitting the DW_AT_location
; and not asserting.
; Note that this check may XPASS in the future if DbgValueHistoryCalculator
; becoms smarter. That would be fine, too.
;
; CHECK: DW_TAG_subprogram
; CHECK: linkage_name{{.*}}_Z2f21A
; CHECK: DW_TAG_formal_parameter
; CHECK-NOT: DW_AT_location
; CHECK-NEXT: DW_AT_name {{.*}}"p5"
;
; // Compile at -O1
; struct A {
; int *m1;
; int m2;
; };
;
; void f1(int *p1, int p2);
; void __attribute__((always_inline)) f2(A p5) { f1(p5.m1, p5.m2); }
;
; void func(void*);
; void func(const int &, const int&);
; int cond();
; void f() {
; while (cond()) {
; int x;
; func(x, 0);
; while (cond()) {
; char y;
; func(&y);
; char j;
; func(&j);
; char I;
; func(&I);
; func(0, 0);
; A g;
; g.m1 = &x;
; f2(g);
; }
; }
; }
; ModuleID = 'test.cpp'
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"
%struct.A = type { i32*, i32 }
; Function Attrs: alwaysinline ssp uwtable
define void @_Z2f21A(i32* %p5.coerce0, i32 %p5.coerce1) #0 {
entry:
tail call void @llvm.dbg.value(metadata i32* %p5.coerce0, i64 0, metadata !16, metadata !33), !dbg !34
tail call void @llvm.dbg.value(metadata i32 %p5.coerce1, i64 0, metadata !16, metadata !35), !dbg !34
tail call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !16, metadata !36), !dbg !34
tail call void @_Z2f1Pii(i32* %p5.coerce0, i32 %p5.coerce1), !dbg !37
ret void, !dbg !38
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare void @_Z2f1Pii(i32*, i32) #2
; Function Attrs: ssp uwtable
define void @_Z1fv() #3 {
entry:
%x = alloca i32, align 4
%ref.tmp = alloca i32, align 4
%y = alloca i8, align 1
%j = alloca i8, align 1
%I = alloca i8, align 1
%ref.tmp5 = alloca i32, align 4
%ref.tmp6 = alloca i32, align 4
%call11 = call i32 @_Z4condv(), !dbg !39
%tobool12 = icmp eq i32 %call11, 0, !dbg !39
br i1 %tobool12, label %while.end7, label %while.body, !dbg !40
while.cond.loopexit: ; preds = %while.body4, %while.body
%call = call i32 @_Z4condv(), !dbg !39
%tobool = icmp eq i32 %call, 0, !dbg !39
br i1 %tobool, label %while.end7, label %while.body, !dbg !40
while.body: ; preds = %entry, %while.cond.loopexit
store i32 0, i32* %ref.tmp, align 4, !dbg !41, !tbaa !42
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !21, metadata !36), !dbg !46
call void @_Z4funcRKiS0_(i32* dereferenceable(4) %x, i32* dereferenceable(4) %ref.tmp), !dbg !47
%call29 = call i32 @_Z4condv(), !dbg !48
%tobool310 = icmp eq i32 %call29, 0, !dbg !48
br i1 %tobool310, label %while.cond.loopexit, label %while.body4, !dbg !49
while.body4: ; preds = %while.body, %while.body4
call void @llvm.dbg.value(metadata i8* %y, i64 0, metadata !23, metadata !36), !dbg !50
call void @_Z4funcPv(i8* %y), !dbg !51
call void @llvm.dbg.value(metadata i8* %j, i64 0, metadata !26, metadata !36), !dbg !52
call void @_Z4funcPv(i8* %j), !dbg !53
call void @llvm.dbg.value(metadata i8* %I, i64 0, metadata !27, metadata !36), !dbg !54
call void @_Z4funcPv(i8* %I), !dbg !55
store i32 0, i32* %ref.tmp5, align 4, !dbg !56, !tbaa !42
store i32 0, i32* %ref.tmp6, align 4, !dbg !57, !tbaa !42
call void @_Z4funcRKiS0_(i32* dereferenceable(4) %ref.tmp5, i32* dereferenceable(4) %ref.tmp6), !dbg !58
call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !28, metadata !36), !dbg !59
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !28, metadata !33), !dbg !59
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !21, metadata !36), !dbg !46
call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !60, metadata !33), !dbg !62
call void @llvm.dbg.value(metadata i32 undef, i64 0, metadata !60, metadata !35), !dbg !62
call void @llvm.dbg.declare(metadata %struct.A* undef, metadata !60, metadata !36), !dbg !62
call void @_Z2f1Pii(i32* %x, i32 undef), !dbg !63
%call2 = call i32 @_Z4condv(), !dbg !48
%tobool3 = icmp eq i32 %call2, 0, !dbg !48
br i1 %tobool3, label %while.cond.loopexit, label %while.body4, !dbg !49
while.end7: ; preds = %while.cond.loopexit, %entry
ret void, !dbg !64
}
declare i32 @_Z4condv()
declare void @_Z4funcRKiS0_(i32* dereferenceable(4), i32* dereferenceable(4))
declare void @_Z4funcPv(i8*)
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
attributes #0 = { alwaysinline ssp uwtable }
attributes #1 = { nounwind readnone }
attributes #3 = { ssp uwtable }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!29, !30, !31}
!llvm.ident = !{!32}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !10, globals: !2, imports: !2)
!1 = !DIFile(filename: "test.cpp", directory: "")
!2 = !{}
!3 = !{!4}
!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 128, align: 64, file: !1, elements: !5, identifier: "_ZTS1A")
!5 = !{!6, !9}
!6 = !DIDerivedType(tag: DW_TAG_member, name: "m1", line: 2, size: 64, align: 64, file: !1, scope: !"_ZTS1A", baseType: !7)
!7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = !DIDerivedType(tag: DW_TAG_member, name: "m2", line: 3, size: 32, align: 32, offset: 64, file: !1, scope: !"_ZTS1A", baseType: !8)
!10 = !{!11, !17}
!11 = !DISubprogram(name: "f2", linkageName: "_Z2f21A", line: 7, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !1, scope: !12, type: !13, function: void (i32*, i32)* @_Z2f21A, variables: !15)
!12 = !DIFile(filename: "test.cpp", directory: "")
!13 = !DISubroutineType(types: !14)
!14 = !{null, !"_ZTS1A"}
!15 = !{!16}
!16 = !DILocalVariable(name: "p5", line: 7, arg: 1, scope: !11, file: !12, type: !"_ZTS1A")
!17 = !DISubprogram(name: "f", linkageName: "_Z1fv", line: 12, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 12, file: !1, scope: !12, type: !18, function: void ()* @_Z1fv, variables: !20)
!18 = !DISubroutineType(types: !19)
!19 = !{null}
!20 = !{!21, !23, !26, !27, !28}
!21 = !DILocalVariable(name: "x", line: 14, scope: !22, file: !12, type: !8)
!22 = distinct !DILexicalBlock(line: 13, column: 18, file: !1, scope: !17)
!23 = !DILocalVariable(name: "y", line: 17, scope: !24, file: !12, type: !25)
!24 = distinct !DILexicalBlock(line: 16, column: 20, file: !1, scope: !22)
!25 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
!26 = !DILocalVariable(name: "j", line: 19, scope: !24, file: !12, type: !25)
!27 = !DILocalVariable(name: "I", line: 21, scope: !24, file: !12, type: !25)
!28 = !DILocalVariable(name: "g", line: 24, scope: !24, file: !12, type: !"_ZTS1A")
!29 = !{i32 2, !"Dwarf Version", i32 2}
!30 = !{i32 2, !"Debug Info Version", i32 3}
!31 = !{i32 1, !"PIC Level", i32 2}
!32 = !{!"clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)"}
!33 = !DIExpression(DW_OP_bit_piece, 0, 8)
!34 = !DILocation(line: 7, column: 42, scope: !11)
!35 = !DIExpression(DW_OP_bit_piece, 8, 4)
!36 = !DIExpression()
!37 = !DILocation(line: 7, column: 48, scope: !11)
!38 = !DILocation(line: 7, column: 66, scope: !11)
!39 = !DILocation(line: 13, column: 10, scope: !17)
!40 = !DILocation(line: 13, column: 3, scope: !17)
!41 = !DILocation(line: 15, column: 13, scope: !22)
!42 = !{!43, !43, i64 0}
!43 = !{!"int", !44, i64 0}
!44 = !{!"omnipotent char", !45, i64 0}
!45 = !{!"Simple C/C++ TBAA"}
!46 = !DILocation(line: 14, column: 9, scope: !22)
!47 = !DILocation(line: 15, column: 5, scope: !22)
!48 = !DILocation(line: 16, column: 12, scope: !22)
!49 = !DILocation(line: 16, column: 5, scope: !22)
!50 = !DILocation(line: 17, column: 12, scope: !24)
!51 = !DILocation(line: 18, column: 7, scope: !24)
!52 = !DILocation(line: 19, column: 12, scope: !24)
!53 = !DILocation(line: 20, column: 7, scope: !24)
!54 = !DILocation(line: 21, column: 12, scope: !24)
!55 = !DILocation(line: 22, column: 7, scope: !24)
!56 = !DILocation(line: 23, column: 12, scope: !24)
!57 = !DILocation(line: 23, column: 15, scope: !24)
!58 = !DILocation(line: 23, column: 7, scope: !24)
!59 = !DILocation(line: 24, column: 9, scope: !24)
!60 = !DILocalVariable(name: "p5", line: 7, arg: 1, scope: !11, file: !12, type: !"_ZTS1A")
!61 = distinct !DILocation(line: 26, column: 7, scope: !24)
!62 = !DILocation(line: 7, column: 42, scope: !11, inlinedAt: !61)
!63 = !DILocation(line: 7, column: 48, scope: !11, inlinedAt: !61)
!64 = !DILocation(line: 29, column: 1, scope: !17)
|
