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
|
; RUN: opt -S -passes=jump-threading < %s | FileCheck %s
@a = global i32 0, align 4
; Test that the llvm.dbg.value calls in a threaded block are correctly updated to
; target the locals in their threaded block, and not the unthreaded one.
define void @test1(i32 %cond1, i32 %cond2) {
; CHECK: [[globalptr:@.*]] = global i32 0, align 4
; CHECK: bb.cond2:
; CHECK: #dbg_value(ptr null, ![[DBG1ptr:[0-9]+]], !DIExpression(), ![[DBG2ptr:[0-9]+]]
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 %cond2, 0, !dbg ![[DBGLOCtobool1:[0-9]+]]
; CHECK-NEXT: #dbg_value(!DIArgList(ptr null, i1 [[TOBOOL1]], i1 [[TOBOOL1]]), !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_LLVM_arg, 2, DW_OP_plus), !{{[0-9]+}}
; CHECK: bb.cond2.thread:
; CHECK-NEXT: #dbg_value(ptr [[globalptr]], ![[DBG1ptr]], !DIExpression(), ![[DBG2ptr]]
; CHECK-NEXT: [[TOBOOL12:%.*]] = icmp eq i32 %cond2, 0, !dbg ![[DBGLOCtobool1]]
; CHECK-NEXT: #dbg_value(!DIArgList(ptr [[globalptr]], i1 [[TOBOOL12]], i1 [[TOBOOL12]]), !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_LLVM_arg, 2, DW_OP_plus), !{{[0-9]+}}
entry:
%tobool = icmp eq i32 %cond1, 0, !dbg !15
call void @llvm.dbg.value(metadata i1 %tobool, metadata !9, metadata !DIExpression()), !dbg !15
br i1 %tobool, label %bb.cond2, label %bb.f1, !dbg !16
bb.f1: ; preds = %entry
call void @f1(), !dbg !17
br label %bb.cond2, !dbg !18
bb.cond2: ; preds = %bb.f1, %entry
%ptr = phi ptr [ null, %bb.f1 ], [ @a, %entry ], !dbg !19
call void @llvm.dbg.value(metadata ptr %ptr, metadata !11, metadata !DIExpression()), !dbg !19
%tobool1 = icmp eq i32 %cond2, 0, !dbg !20
call void @llvm.dbg.value(metadata !DIArgList(ptr %ptr, i1 %tobool1, i1 %tobool1), metadata !13, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_LLVM_arg, 2, DW_OP_plus)), !dbg !20
br i1 %tobool1, label %bb.file, label %bb.f2, !dbg !21
bb.f2: ; preds = %bb.cond2
call void @f2(), !dbg !22
br label %exit, !dbg !23
bb.file: ; preds = %bb.cond2
%cmp = icmp eq ptr %ptr, null, !dbg !24
call void @llvm.dbg.value(metadata i1 %cmp, metadata !14, metadata !DIExpression()), !dbg !24
br i1 %cmp, label %bb.f4, label %bb.f3, !dbg !25
bb.f3: ; preds = %bb.file
br label %exit, !dbg !26
bb.f4: ; preds = %bb.file
call void @f4(), !dbg !27
br label %exit, !dbg !28
exit: ; preds = %bb.f4, %bb.f3, %bb.f2
ret void, !dbg !29
}
; This is testing for debug value intrinsics outside of the threaded block pointing to a value
; inside to correctly take any new definitions.
define void @test2(i32 %cond1, i32 %cond2) !dbg !5 {
; CHECK: bb.f3
; CHECK: #dbg_value(ptr @a, !{{[0-9]+}}, !DIExpression(), !{{[0-9]+}}
; CHECK: bb.f4
; CHECK-NEXT: [[PTR3:%.*]] = phi ptr [ null, %bb.cond2 ]
; CHECK-NEXT: #dbg_value(ptr [[PTR3]], !{{[0-9]+}}, !DIExpression(), !{{[0-9]+}}
entry:
%tobool = icmp eq i32 %cond1, 0, !dbg !15
br i1 %tobool, label %bb.cond2, label %bb.f1, !dbg !16
bb.f1: ; preds = %entry
call void @f1(), !dbg !17
br label %bb.cond2, !dbg !18
bb.cond2: ; preds = %bb.f1, %entry
%ptr = phi ptr [ null, %bb.f1 ], [ @a, %entry ], !dbg !19
%tobool1 = icmp eq i32 %cond2, 0, !dbg !20
br i1 %tobool1, label %bb.file, label %bb.f2, !dbg !21
bb.f2: ; preds = %bb.cond2
call void @f2(), !dbg !22
br label %exit, !dbg !23
bb.file: ; preds = %bb.cond2
%cmp = icmp eq ptr %ptr, null, !dbg !24
call void @llvm.dbg.value(metadata ptr %ptr, metadata !14, metadata !DIExpression()), !dbg !21
br i1 %cmp, label %bb.f4, label %bb.f3, !dbg !25
bb.f3: ; preds = %bb.file
call void @f3(), !dbg !26
br label %exit, !dbg !27
bb.f4: ; preds = %bb.file
call void @f4(), !dbg !28
br label %exit, !dbg !29
exit: ; preds = %bb.f4, %bb.f3, %bb.f2
ret void, !dbg !29
}
; Test for the cloning of dbg.values on elided instructions -- down one path
; being threaded, the `and` in the function below is optimised away, but its
; debug-info should still be preserved.
; Similarly, the call to f1 gets cloned, its dbg.value should be cloned too.
; Duplicated debug value in land.end.thr_comm is removed by
; RemoveRedundantDbgInstrs pass at the end.
define void @test16(i1 %c, i1 %c2, i1 %c3, i1 %c4) nounwind ssp !dbg !30 {
; CHECK-LABEL: define void @test16(i1
entry:
%cmp = icmp sgt i32 undef, 1, !dbg !33
br i1 %c, label %land.end, label %land.rhs, !dbg !33
land.rhs:
br i1 %c2, label %lor.lhs.false.i, label %land.end, !dbg !33
lor.lhs.false.i:
br i1 %c3, label %land.end, label %land.end, !dbg !33
; CHECK-LABEL: land.end.thr_comm:
; CHECK-NEXT: #dbg_value(i32 1,
; CHECK-NEXT: call void @f1()
; CHECK-NEXT: br i1 %c4,
; CHECK-LABEL: land.end:
; CHECK-NEXT: %0 = phi i1
; CHECK-NEXT: #dbg_value(i32 0,
land.end:
%0 = phi i1 [ true, %entry ], [ false, %land.rhs ], [false, %lor.lhs.false.i], [false, %lor.lhs.false.i]
call void @llvm.dbg.value(metadata i32 0, metadata !32, metadata !DIExpression()), !dbg !33
%cmp12 = and i1 %cmp, %0, !dbg !33
%xor1 = xor i1 %cmp12, %c4, !dbg !33
call void @llvm.dbg.value(metadata i32 1, metadata !32, metadata !DIExpression()), !dbg !33
call void @f1()
br i1 %xor1, label %if.then, label %if.end, !dbg !33
if.then:
ret void, !dbg !33
if.end:
ret void, !dbg !33
}
declare void @f1()
declare void @f2()
declare void @f3()
declare void @f4()
; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
!llvm.dbg.cu = !{!0}
!llvm.debugify = !{!2, !3}
!llvm.module.flags = !{!4}
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
!1 = !DIFile(filename: "/home/ben/Documents/llvm-project/llvm/test/Transforms/JumpThreading/thread-debug-info.ll", directory: "/")
!2 = !{i32 15}
!3 = !{i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = distinct !DISubprogram(name: "test2", linkageName: "test2", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8)
!6 = !DISubroutineType(types: !7)
!7 = !{}
!8 = !{!9, !11, !13, !14}
!9 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !10)
!10 = !DIBasicType(name: "ty8", size: 8, encoding: DW_ATE_unsigned)
!11 = !DILocalVariable(name: "2", scope: !5, file: !1, line: 5, type: !12)
!12 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned)
!13 = !DILocalVariable(name: "3", scope: !5, file: !1, line: 6, type: !10)
!14 = !DILocalVariable(name: "4", scope: !5, file: !1, line: 10, type: !10)
!15 = !DILocation(line: 1, column: 1, scope: !5)
!16 = !DILocation(line: 2, column: 1, scope: !5)
!17 = !DILocation(line: 3, column: 1, scope: !5)
!18 = !DILocation(line: 4, column: 1, scope: !5)
!19 = !DILocation(line: 5, column: 1, scope: !5)
!20 = !DILocation(line: 6, column: 1, scope: !5)
!21 = !DILocation(line: 7, column: 1, scope: !5)
!22 = !DILocation(line: 8, column: 1, scope: !5)
!23 = !DILocation(line: 9, column: 1, scope: !5)
!24 = !DILocation(line: 10, column: 1, scope: !5)
!25 = !DILocation(line: 11, column: 1, scope: !5)
!26 = !DILocation(line: 12, column: 1, scope: !5)
!27 = !DILocation(line: 13, column: 1, scope: !5)
!28 = !DILocation(line: 14, column: 1, scope: !5)
!29 = !DILocation(line: 15, column: 1, scope: !5)
!30 = distinct !DISubprogram(name: "test13", linkageName: "test13", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !31)
!31 = !{!32}
!32 = !DILocalVariable(name: "1", scope: !30, file: !1, line: 1, type: !10)
!33 = !DILocation(line: 1, column: 1, scope: !30)
|
