1 ; REQUIRES: x86_64-linux
2 ; RUN: opt < %s -passes=simplifycfg -S -o %t
3 ; RUN: FileCheck %s < %t
5 ; Test to make sure the dangling probe is gone.
6 ; CHECK: define dso_local i32 @foo
7 ; CHECK-NOT: call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 5
9 ; Function Attrs: nounwind uwtable
10 define dso_local i32 @foo(ptr nocapture %marker, ptr nocapture %move_ordering, ptr nocapture %moves, i32 %num_moves) local_unnamed_addr #0 !dbg !10 {
12 call void @llvm.dbg.value(metadata ptr %marker, metadata !19, metadata !DIExpression()), !dbg !28
13 call void @llvm.dbg.value(metadata ptr %move_ordering, metadata !20, metadata !DIExpression()), !dbg !28
14 call void @llvm.dbg.value(metadata ptr %moves, metadata !21, metadata !DIExpression()), !dbg !28
15 call void @llvm.dbg.value(metadata i32 %num_moves, metadata !22, metadata !DIExpression()), !dbg !28
16 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 1, i32 0, i64 -1), !dbg !29
17 call void @llvm.dbg.value(metadata i32 -1000000, metadata !25, metadata !DIExpression()), !dbg !28
18 %0 = load i32, ptr %marker, align 4, !dbg !30, !tbaa !31
19 %inc = add nsw i32 %0, 1, !dbg !30
20 store i32 %inc, ptr %marker, align 4, !dbg !30, !tbaa !31
21 call void @llvm.dbg.value(metadata i32 %inc, metadata !27, metadata !DIExpression()), !dbg !28
22 %cmp = icmp slt i32 %0, 9, !dbg !35
23 br i1 %cmp, label %for.cond, label %if.else, !dbg !37
25 for.cond: ; preds = %entry, %for.inc
26 %i.0 = phi i32 [ %inc6, %for.inc ], [ %inc, %entry ], !dbg !38
27 %best.0 = phi i32 [ %best.1, %for.inc ], [ -1000000, %entry ], !dbg !28
28 %tmp.0 = phi i32 [ %tmp.1, %for.inc ], [ undef, %entry ]
29 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 2, i32 2, i64 -1), !dbg !41
30 call void @llvm.dbg.value(metadata i32 %tmp.0, metadata !26, metadata !DIExpression()), !dbg !28
31 call void @llvm.dbg.value(metadata i32 %best.0, metadata !25, metadata !DIExpression()), !dbg !28
32 call void @llvm.dbg.value(metadata i32 %i.0, metadata !24, metadata !DIExpression()), !dbg !28
33 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 3, i32 0, i64 -1), !dbg !42
34 %cmp1 = icmp slt i32 %i.0, %num_moves, !dbg !44
35 br i1 %cmp1, label %for.body, label %if.end12, !dbg !45
37 for.body: ; preds = %for.cond
38 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 4, i32 0, i64 -1), !dbg !46
39 %idxprom = sext i32 %i.0 to i64, !dbg !46
40 %arrayidx = getelementptr inbounds i32, ptr %move_ordering, i64 %idxprom, !dbg !46
41 %1 = load i32, ptr %arrayidx, align 4, !dbg !46, !tbaa !31
42 %cmp2 = icmp sgt i32 %1, %best.0, !dbg !49
43 br i1 %cmp2, label %if.then3, label %for.inc, !dbg !50
45 if.then3: ; preds = %for.body
46 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 5, i32 0, i64 -1), !dbg !51
47 call void @llvm.dbg.value(metadata i32 %1, metadata !25, metadata !DIExpression()), !dbg !28
48 call void @llvm.dbg.value(metadata i32 %i.0, metadata !26, metadata !DIExpression()), !dbg !28
49 br label %for.inc, !dbg !53
51 for.inc: ; preds = %for.body, %if.then3
52 %best.1 = phi i32 [ %1, %if.then3 ], [ %best.0, %for.body ], !dbg !28
53 %tmp.1 = phi i32 [ %i.0, %if.then3 ], [ %tmp.0, %for.body ]
54 call void @llvm.dbg.value(metadata i32 %tmp.1, metadata !26, metadata !DIExpression()), !dbg !28
55 call void @llvm.dbg.value(metadata i32 %best.1, metadata !25, metadata !DIExpression()), !dbg !28
56 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 6, i32 0, i64 -1), !dbg !54
57 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 7, i32 0, i64 -1), !dbg !55
58 %inc6 = add nsw i32 %i.0, 1, !dbg !55
59 call void @llvm.dbg.value(metadata i32 %inc6, metadata !24, metadata !DIExpression()), !dbg !28
60 br label %for.cond, !dbg !56, !llvm.loop !57
62 if.else: ; preds = %entry
63 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 9, i32 0, i64 -1), !dbg !59
64 %cmp7 = icmp slt i32 %inc, %num_moves, !dbg !61
65 br i1 %cmp7, label %cleanup, label %if.end12, !dbg !62
67 if.end12: ; preds = %if.else, %for.cond
68 %best.2 = phi i32 [ %best.0, %for.cond ], [ -1000000, %if.else ], !dbg !63
69 %tmp.2 = phi i32 [ %tmp.0, %for.cond ], [ undef, %if.else ]
70 call void @llvm.dbg.value(metadata i32 %tmp.2, metadata !26, metadata !DIExpression()), !dbg !28
71 call void @llvm.dbg.value(metadata i32 %best.2, metadata !25, metadata !DIExpression()), !dbg !28
72 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 11, i32 2, i64 -1), !dbg !28
73 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 8, i32 2, i64 -1), !dbg !64
74 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 12, i32 0, i64 -1), !dbg !65
75 %cmp13 = icmp sgt i32 %best.2, -1000000, !dbg !67
76 br i1 %cmp13, label %if.then14, label %cleanup, !dbg !68
78 if.then14: ; preds = %if.end12
79 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 13, i32 0, i64 -1), !dbg !69
80 br label %cleanup, !dbg !78
82 cleanup: ; preds = %if.end12, %if.else, %if.then14
83 %retval.0 = phi i32 [ 1, %if.then14 ], [ 1, %if.else ], [ 0, %if.end12 ], !dbg !28
84 call void @llvm.pseudoprobe(i64 -4224472938262609671, i64 14, i32 2, i64 -1), !dbg !79
85 ret i32 %retval.0, !dbg !83
88 ; Function Attrs: inaccessiblememonly nounwind willreturn mustprogress
89 declare void @llvm.pseudoprobe(i64, i64, i32, i64) #1
91 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
92 declare void @llvm.dbg.value(metadata, metadata, metadata) #2
94 attributes #0 = { nounwind uwtable "disable-tail-calls"="true" "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
95 attributes #1 = { inaccessiblememonly nounwind willreturn mustprogress }
96 attributes #2 = { nofree nosync nounwind readnone speculatable willreturn }
99 !llvm.module.flags = !{!3, !4, !5, !6, !7}
101 !llvm.pseudo_probe_desc = !{!9}
103 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
104 !1 = !DIFile(filename: "test.cpp", directory: "")
106 !3 = !{i32 7, !"Dwarf Version", i32 4}
107 !4 = !{i32 2, !"Debug Info Version", i32 3}
108 !5 = !{i32 1, !"wchar_size", i32 4}
109 !6 = !{i32 1, !"ThinLTO", i32 0}
110 !7 = !{i32 1, !"EnableSplitLTOUnit", i32 1}
111 !8 = !{!"clang version 13.0.0"}
112 !9 = !{i64 -4224472938262609671, i64 328037311046, !"foo", null}
113 !10 = distinct !DISubprogram(name: "remove_one_fast", linkageName: "foo", scope: !1, file: !1, line: 8, type: !11, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !18)
114 !11 = !DISubroutineType(types: !12)
115 !12 = !{!13, !14, !14, !15, !17}
116 !13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
117 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
118 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
119 !16 = !DIDerivedType(tag: DW_TAG_typedef, name: "move_s", file: !1, line: 6, baseType: !13)
120 !17 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !13)
121 !18 = !{!19, !20, !21, !22, !23, !24, !25, !26, !27}
122 !19 = !DILocalVariable(name: "marker", arg: 1, scope: !10, file: !1, line: 8, type: !14)
123 !20 = !DILocalVariable(name: "move_ordering", arg: 2, scope: !10, file: !1, line: 8, type: !14)
124 !21 = !DILocalVariable(name: "moves", arg: 3, scope: !10, file: !1, line: 9, type: !15)
125 !22 = !DILocalVariable(name: "num_moves", arg: 4, scope: !10, file: !1, line: 9, type: !17)
126 !23 = !DILocalVariable(name: "tmpmv", scope: !10, file: !1, line: 10, type: !16)
127 !24 = !DILocalVariable(name: "i", scope: !10, file: !1, line: 11, type: !13)
128 !25 = !DILocalVariable(name: "best", scope: !10, file: !1, line: 11, type: !13)
129 !26 = !DILocalVariable(name: "tmp", scope: !10, file: !1, line: 12, type: !13)
130 !27 = !DILocalVariable(name: "mark", scope: !10, file: !1, line: 12, type: !13)
131 !28 = !DILocation(line: 0, scope: !10)
132 !29 = !DILocation(line: 10, column: 5, scope: !10)
133 !30 = !DILocation(line: 14, column: 14, scope: !10)
134 !31 = !{!32, !32, i64 0}
135 !32 = !{!"int", !33, i64 0}
136 !33 = !{!"omnipotent char", !34, i64 0}
137 !34 = !{!"Simple C++ TBAA"}
138 !35 = !DILocation(line: 17, column: 14, scope: !36)
139 !36 = distinct !DILexicalBlock(scope: !10, file: !1, line: 17, column: 9)
140 !37 = !DILocation(line: 17, column: 9, scope: !10)
141 !38 = !DILocation(line: 0, scope: !39)
142 !39 = distinct !DILexicalBlock(scope: !40, file: !1, line: 18, column: 9)
143 !40 = distinct !DILexicalBlock(scope: !36, file: !1, line: 17, column: 20)
144 !41 = !DILocation(line: 18, column: 18, scope: !39)
145 !42 = !DILocation(line: 18, column: 24, scope: !43)
146 !43 = distinct !DILexicalBlock(scope: !39, file: !1, line: 18, column: 9)
147 !44 = !DILocation(line: 18, column: 26, scope: !43)
148 !45 = !DILocation(line: 18, column: 9, scope: !39)
149 !46 = !DILocation(line: 19, column: 17, scope: !47)
150 !47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 19, column: 17)
151 !48 = distinct !DILexicalBlock(scope: !43, file: !1, line: 18, column: 44)
152 !49 = !DILocation(line: 19, column: 34, scope: !47)
153 !50 = !DILocation(line: 19, column: 17, scope: !48)
154 !51 = !DILocation(line: 20, column: 24, scope: !52)
155 !52 = distinct !DILexicalBlock(scope: !47, file: !1, line: 19, column: 42)
156 !53 = !DILocation(line: 22, column: 13, scope: !52)
157 !54 = !DILocation(line: 23, column: 9, scope: !48)
158 !55 = !DILocation(line: 18, column: 40, scope: !43)
159 !56 = !DILocation(line: 18, column: 9, scope: !43)
160 !57 = distinct !{!57, !45, !58}
161 !58 = !DILocation(line: 23, column: 9, scope: !39)
162 !59 = !DILocation(line: 24, column: 16, scope: !60)
163 !60 = distinct !DILexicalBlock(scope: !36, file: !1, line: 24, column: 16)
164 !61 = !DILocation(line: 24, column: 21, scope: !60)
165 !62 = !DILocation(line: 24, column: 16, scope: !36)
166 !63 = !DILocation(line: 11, column: 12, scope: !10)
167 !64 = !DILocation(line: 24, column: 5, scope: !40)
168 !65 = !DILocation(line: 31, column: 9, scope: !66)
169 !66 = distinct !DILexicalBlock(scope: !10, file: !1, line: 31, column: 9)
170 !67 = !DILocation(line: 31, column: 14, scope: !66)
171 !68 = !DILocation(line: 31, column: 9, scope: !10)
172 !69 = !DILocation(line: 35, column: 30, scope: !70)
173 !70 = distinct !DILexicalBlock(scope: !66, file: !1, line: 31, column: 22)
174 !71 = !DILocation(line: 35, column: 9, scope: !70)
175 !72 = !DILocation(line: 35, column: 28, scope: !70)
176 !73 = !DILocation(line: 36, column: 29, scope: !70)
177 !74 = !DILocation(line: 38, column: 17, scope: !70)
178 !75 = !DILocation(line: 39, column: 23, scope: !70)
179 !76 = !DILocation(line: 39, column: 21, scope: !70)
180 !77 = !DILocation(line: 40, column: 20, scope: !70)
181 !78 = !DILocation(line: 42, column: 9, scope: !70)
182 !79 = !DILocation(line: 44, column: 9, scope: !80)
183 !80 = distinct !DILexicalBlock(scope: !66, file: !1, line: 43, column: 12)
184 !81 = !DILocation(line: 25, column: 16, scope: !82)
185 !82 = distinct !DILexicalBlock(scope: !60, file: !1, line: 24, column: 34)
186 !83 = !DILocation(line: 46, column: 1, scope: !10)