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: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
; RUN: -experimental-debug-variable-locations=false \
; RUN: | FileCheck %s --check-prefixes=CHECK,DBGVALUE
; RUN: llc -start-after=codegenprepare -stop-before finalize-isel -o - %s \
; RUN: -experimental-debug-variable-locations=true \
; RUN: | FileCheck %s --check-prefixes=CHECK,INSTRREF
; This test case was generated from the following phi-split.c program,
; using: clang phi-split.c -g -O1 -S -o - --target=i386 -emit-llvm
; --------------------------------------
; long long end = 10;
;
; int main() {
; long long x = 9;
; long long y = 13;
; for (long long u = 0; u < end; ++u) {
; x += y;
; y = y * 3;
; }
;
; volatile long long arr[80];
; for (long long q = 0; q < 64; ++q) {
; arr[q] = q + 3;
; }
;
; return x;
; }
; --------------------------------------
;
; ModuleID = 'phi-split.c'
source_filename = "phi-split.c"
target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
target triple = "i386"
@end = dso_local local_unnamed_addr global i64 10, align 8, !dbg !0
; Function Attrs: nounwind
define dso_local i32 @main() local_unnamed_addr #0 !dbg !12 {
; CHECK-LABEL: name: main
entry:
%arr = alloca [80 x i64], align 8
call void @llvm.dbg.value(metadata i64 9, metadata !17, metadata !DIExpression()), !dbg !28
call void @llvm.dbg.value(metadata i64 13, metadata !18, metadata !DIExpression()), !dbg !29
call void @llvm.dbg.value(metadata i64 0, metadata !19, metadata !DIExpression()), !dbg !30
%0 = load i64, i64* @end, align 8, !dbg !31
%cmp20 = icmp sgt i64 %0, 0, !dbg !37
br i1 %cmp20, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !38
for.body.lr.ph: ; preds = %entry
%1 = load i64, i64* @end, align 8
br label %for.body, !dbg !38
for.cond.cleanup.loopexit: ; preds = %for.body
%extract.t = trunc i64 %add to i32, !dbg !38
br label %for.cond.cleanup, !dbg !39
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
%x.0.lcssa.off0 = phi i32 [ 9, %entry ], [ %extract.t, %for.cond.cleanup.loopexit ]
call void @llvm.dbg.value(metadata i64 undef, metadata !17, metadata !DIExpression()), !dbg !28
%2 = bitcast [80 x i64]* %arr to i8*, !dbg !39
call void @llvm.dbg.value(metadata i64 0, metadata !26, metadata !DIExpression()), !dbg !41
br label %for.body4, !dbg !42
for.body: ; preds = %for.body.lr.ph, %for.body
; CHECK-LABEL: bb.{{.*}}.for.body:
; CHECK: [[REG2:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 5
; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 6
; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 7
; CHECK-NEXT: [[REG5:%[0-9]+]]:gr32_nosp = PHI
; INSTRREF-SAME: debug-instr-number 8
; CHECK-NEXT: [[REG6:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 9
; CHECK-NEXT: [[REG7:%[0-9]+]]:gr32 = PHI
; INSTRREF-SAME: debug-instr-number 10
; INSTRREF-NEXT: DBG_INSTR_REF 5, 0, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; INSTRREF-NEXT: DBG_INSTR_REF 6, 0, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; INSTRREF-NEXT: DBG_INSTR_REF 7, 0, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; INSTRREF-NEXT: DBG_INSTR_REF 8, 0, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; INSTRREF-NEXT: DBG_INSTR_REF 9, 0, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; INSTRREF-NEXT: DBG_INSTR_REF 10, 0, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG2]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG3]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG4]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG5]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG6]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
; DBGVALUE-NEXT: DBG_VALUE [[REG7]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
%u.023 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%y.022 = phi i64 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
%x.021 = phi i64 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
call void @llvm.dbg.value(metadata i64 %u.023, metadata !19, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata i64 %y.022, metadata !18, metadata !DIExpression()), !dbg !29
call void @llvm.dbg.value(metadata i64 %x.021, metadata !17, metadata !DIExpression()), !dbg !28
%add = add nuw nsw i64 %y.022, %x.021, !dbg !43
%mul = mul nsw i64 %y.022, 3, !dbg !45
%inc = add nuw nsw i64 %u.023, 1, !dbg !46
call void @llvm.dbg.value(metadata i64 %inc, metadata !19, metadata !DIExpression()), !dbg !30
call void @llvm.dbg.value(metadata i64 %mul, metadata !18, metadata !DIExpression()), !dbg !29
call void @llvm.dbg.value(metadata i64 %add, metadata !17, metadata !DIExpression()), !dbg !28
%cmp = icmp slt i64 %inc, %1, !dbg !37
br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !38, !llvm.loop !47
for.cond.cleanup3: ; preds = %for.body4
ret i32 %x.0.lcssa.off0, !dbg !50
for.body4: ; preds = %for.cond.cleanup, %for.body4
%q.019 = phi i64 [ 0, %for.cond.cleanup ], [ %inc7, %for.body4 ]
call void @llvm.dbg.value(metadata i64 %q.019, metadata !26, metadata !DIExpression()), !dbg !41
%add5 = add nuw nsw i64 %q.019, 3, !dbg !51
%idxprom = trunc i64 %q.019 to i32, !dbg !54
%arrayidx = getelementptr inbounds [80 x i64], [80 x i64]* %arr, i32 0, i32 %idxprom, !dbg !54
store volatile i64 %add5, i64* %arrayidx, align 8, !dbg !55
%inc7 = add nuw nsw i64 %q.019, 1, !dbg !56
call void @llvm.dbg.value(metadata i64 %inc7, metadata !26, metadata !DIExpression()), !dbg !41
%cmp2 = icmp ult i64 %inc7, 64, !dbg !57
br i1 %cmp2, label %for.body4, label %for.cond.cleanup3, !dbg !42, !llvm.loop !58
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone speculatable }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!7, !8, !9, !10}
!llvm.ident = !{!11}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "end", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (x)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "phi-split.c", directory: "")
!4 = !{}
!5 = !{!0}
!6 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
!7 = !{i32 1, !"NumRegisterParameters", i32 0}
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{i32 1, !"wchar_size", i32 4}
!11 = !{!"clang version 7.0.0 (x)"}
!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 3, type: !13, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !16)
!13 = !DISubroutineType(types: !14)
!14 = !{!15}
!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!16 = !{!17, !18, !19, !21, !26}
!17 = !DILocalVariable(name: "x", scope: !12, file: !3, line: 4, type: !6)
!18 = !DILocalVariable(name: "y", scope: !12, file: !3, line: 5, type: !6)
!19 = !DILocalVariable(name: "u", scope: !20, file: !3, line: 6, type: !6)
!20 = distinct !DILexicalBlock(scope: !12, file: !3, line: 6, column: 3)
!21 = !DILocalVariable(name: "arr", scope: !12, file: !3, line: 11, type: !22)
!22 = !DICompositeType(tag: DW_TAG_array_type, baseType: !23, size: 5120, elements: !24)
!23 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
!24 = !{!25}
!25 = !DISubrange(count: 80)
!26 = !DILocalVariable(name: "q", scope: !27, file: !3, line: 12, type: !6)
!27 = distinct !DILexicalBlock(scope: !12, file: !3, line: 12, column: 3)
!28 = !DILocation(line: 4, column: 13, scope: !12)
!29 = !DILocation(line: 5, column: 13, scope: !12)
!30 = !DILocation(line: 6, column: 18, scope: !20)
!31 = !DILocation(line: 6, column: 29, scope: !32)
!32 = distinct !DILexicalBlock(scope: !20, file: !3, line: 6, column: 3)
!37 = !DILocation(line: 6, column: 27, scope: !32)
!38 = !DILocation(line: 6, column: 3, scope: !20)
!39 = !DILocation(line: 11, column: 3, scope: !12)
!40 = !DILocation(line: 11, column: 22, scope: !12)
!41 = !DILocation(line: 12, column: 18, scope: !27)
!42 = !DILocation(line: 12, column: 3, scope: !27)
!43 = !DILocation(line: 7, column: 7, scope: !44)
!44 = distinct !DILexicalBlock(scope: !32, file: !3, line: 6, column: 39)
!45 = !DILocation(line: 8, column: 11, scope: !44)
!46 = !DILocation(line: 6, column: 34, scope: !32)
!47 = distinct !{!47, !38, !48}
!48 = !DILocation(line: 9, column: 3, scope: !20)
!50 = !DILocation(line: 16, column: 3, scope: !12)
!51 = !DILocation(line: 13, column: 16, scope: !52)
!52 = distinct !DILexicalBlock(scope: !53, file: !3, line: 12, column: 38)
!53 = distinct !DILexicalBlock(scope: !27, file: !3, line: 12, column: 3)
!54 = !DILocation(line: 13, column: 5, scope: !52)
!55 = !DILocation(line: 13, column: 12, scope: !52)
!56 = !DILocation(line: 12, column: 33, scope: !53)
!57 = !DILocation(line: 12, column: 27, scope: !53)
!58 = distinct !{!58, !42, !59}
!59 = !DILocation(line: 14, column: 3, scope: !27)
|
