| blob | 40dd8f894252c25f1e8b50ad8ef72a9b08894fb1 |
1 ; RUN: llc < %s -filetype=obj | llvm-readobj - --codeview | FileCheck %s
2 ;
3 ; -- lexicablock.cxx begin ----------------------------------------------------
4 ; int main(int argc, char *argv[]) {
5 ; int localA = 1;
6 ;
7 ; { // S_BLOCK32 not emitted because it has multiple address ranges.
8 ; int localB = 2;
9 ;
10 ; if (__builtin_expect(argc != 1, 0)) { // S_BLOCK32 containing 'localC'
11 ; int localC = 3;
12 ; }
13 ; }
14 ;
15 ; { // S_BLOCK32 containing 'localD'
16 ; int localD = 4;
17 ; localA = localD;
18 ; }
19 ;
20 ; { // S_BLOCK32 not emitted
21 ; { // S_BLOCK32 containing 'localE'
22 ; int localE = 5;
23 ; localA = localE;
24 ; }
25 ; }
26 ;
27 ; { // S_BLOCK32 containing 'localF'
28 ; int localF = 6;
29 ; localA = localF;
30 ;
31 ; { // S_BLOCK32 containing 'localG'
32 ; int localG = 7;
33 ; localA = localG;
34 ; }
35 ; }
36 ;
37 ; if (localA == 7) { // S_BLOCK32 containing 'localH'
38 ; int localH = 8;
39 ; localA = localH;
40 ; }
41 ;
42 ; return localA != 8 ? -1 : 0;
43 ; }
44 ; -- lexicalblock.cxx end -----------------------------------------------------
45 ;
46 ; To regenerate the IR below:
47 ; $ clang -cc1 -triple i686-pc-windows -emit-llvm -o lexicalblock.tmp -debug-info-kind=limited -gcodeview lexicablock.cxx -O1 -disable-llvm-passes
48 ; $ opt -lower-expect -S -o lexicalblock.ll < lexicalblock.tmp
49 ;
50 ; The commands above split the lexical block containing localB and localC into
51 ; two parts, thus creating multiple ranges for the containing lexical block
52 ; without optimizing out the whole thing.
53 ;
54 ; CHECK: {{.*}}Proc{{.*}}Sym {
55 ; CHECK: DisplayName: main
56 ; CHECK: }
57 ; CHECK: LocalSym {
58 ; CHECK: VarName: argc
59 ; CHECK: }
60 ; CHECK: LocalSym {
61 ; CHECK: VarName: argv
62 ; CHECK: }
63 ; CHECK: LocalSym {
64 ; CHECK: VarName: localA
65 ; CHECK: }
66 ; CHECK: LocalSym {
67 ; CHECK: VarName: localB
68 ; CHECK: }
69 ; CHECK: BlockSym {
70 ; CHECK: Kind: S_BLOCK32 {{.*}}
71 ; CHECK: BlockName:
72 ; CHECK: }
73 ; CHECK: ScopeEndSym {
74 ; CHECK: Kind: S_END {{.*}}
75 ; CHECK: }
76 ; CHECK: BlockSym {
77 ; CHECK: Kind: S_BLOCK32 {{.*}}
78 ; CHECK: BlockName:
79 ; CHECK: }
80 ; CHECK: ScopeEndSym {
81 ; CHECK: Kind: S_END {{.*}}
82 ; CHECK: }
83 ; CHECK: BlockSym {
84 ; CHECK: Kind: S_BLOCK32 {{.*}}
85 ; CHECK: BlockName:
86 ; CHECK: }
87 ; CHECK: ScopeEndSym {
88 ; CHECK: }
89 ; CHECK: BlockSym {
90 ; CHECK: Kind: S_BLOCK32 {{.*}}
91 ; CHECK: BlockName:
92 ; CHECK: }
93 ; CHECK: ScopeEndSym {
94 ; CHECK: Kind: S_END {{.*}}
95 ; CHECK: }
96 ; CHECK: ProcEnd {
97 ; CHECK: }
98 ;
99 ; ModuleID = 'lexicalblock.cxx'
100 source_filename = "lexicalblock.cxx"
101 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
102 target triple = "i686-pc-windows-msvc"
104 ; Function Attrs: norecurse nounwind
105 define i32 @main(i32 %argc, ptr %argv) #0 !dbg !8 {
106 entry:
107 %retval = alloca i32, align 4
108 %argv.addr = alloca ptr, align 4
109 %argc.addr = alloca i32, align 4
110 %localA = alloca i32, align 4
111 %localB = alloca i32, align 4
112 %localC = alloca i32, align 4
113 %localD = alloca i32, align 4
114 %localE = alloca i32, align 4
115 %localF = alloca i32, align 4
116 %localG = alloca i32, align 4
117 %localH = alloca i32, align 4
118 store i32 0, ptr %retval, align 4
119 store ptr %argv, ptr %argv.addr, align 4, !tbaa !37
120 call void @llvm.dbg.declare(metadata ptr %argv.addr, metadata !17, metadata !DIExpression()), !dbg !41
121 store i32 %argc, ptr %argc.addr, align 4, !tbaa !42
122 call void @llvm.dbg.declare(metadata ptr %argc.addr, metadata !18, metadata !DIExpression()), !dbg !41
123 call void @llvm.lifetime.start.p0(i64 4, ptr %localA) #4, !dbg !44
124 call void @llvm.dbg.declare(metadata ptr %localA, metadata !19, metadata !DIExpression()), !dbg !44
125 store i32 1, ptr %localA, align 4, !dbg !44, !tbaa !42
126 call void @llvm.lifetime.start.p0(i64 4, ptr %localB) #4, !dbg !45
127 call void @llvm.dbg.declare(metadata ptr %localB, metadata !20, metadata !DIExpression()), !dbg !45
128 store i32 2, ptr %localB, align 4, !dbg !45, !tbaa !42
129 %0 = load i32, ptr %argc.addr, align 4, !dbg !46, !tbaa !42
130 %cmp = icmp ne i32 %0, 1, !dbg !46
131 %conv = zext i1 %cmp to i32, !dbg !46
132 %tobool = icmp ne i32 %conv, 0, !dbg !46
133 br i1 %tobool, label %if.then, label %if.end, !dbg !46, !prof !47
135 if.then: ; preds = %entry
136 call void @llvm.lifetime.start.p0(i64 4, ptr %localC) #4, !dbg !48
137 call void @llvm.dbg.declare(metadata ptr %localC, metadata !22, metadata !DIExpression()), !dbg !48
138 store i32 3, ptr %localC, align 4, !dbg !48, !tbaa !42
139 call void @llvm.lifetime.end.p0(i64 4, ptr %localC) #4, !dbg !49
140 br label %if.end, !dbg !49
142 if.end: ; preds = %if.then, %entry
143 call void @llvm.lifetime.end.p0(i64 4, ptr %localB) #4, !dbg !50
144 call void @llvm.lifetime.start.p0(i64 4, ptr %localD) #4, !dbg !51
145 call void @llvm.dbg.declare(metadata ptr %localD, metadata !25, metadata !DIExpression()), !dbg !51
146 store i32 4, ptr %localD, align 4, !dbg !51, !tbaa !42
147 %1 = load i32, ptr %localD, align 4, !dbg !52, !tbaa !42
148 store i32 %1, ptr %localA, align 4, !dbg !52, !tbaa !42
149 call void @llvm.lifetime.end.p0(i64 4, ptr %localD) #4, !dbg !53
150 call void @llvm.lifetime.start.p0(i64 4, ptr %localE) #4, !dbg !54
151 call void @llvm.dbg.declare(metadata ptr %localE, metadata !27, metadata !DIExpression()), !dbg !54
152 store i32 5, ptr %localE, align 4, !dbg !54, !tbaa !42
153 %2 = load i32, ptr %localE, align 4, !dbg !55, !tbaa !42
154 store i32 %2, ptr %localA, align 4, !dbg !55, !tbaa !42
155 call void @llvm.lifetime.end.p0(i64 4, ptr %localE) #4, !dbg !56
156 call void @llvm.lifetime.start.p0(i64 4, ptr %localF) #4, !dbg !57
157 call void @llvm.dbg.declare(metadata ptr %localF, metadata !30, metadata !DIExpression()), !dbg !57
158 store i32 6, ptr %localF, align 4, !dbg !57, !tbaa !42
159 %3 = load i32, ptr %localF, align 4, !dbg !58, !tbaa !42
160 store i32 %3, ptr %localA, align 4, !dbg !58, !tbaa !42
161 call void @llvm.lifetime.start.p0(i64 4, ptr %localG) #4, !dbg !59
162 call void @llvm.dbg.declare(metadata ptr %localG, metadata !32, metadata !DIExpression()), !dbg !59
163 store i32 7, ptr %localG, align 4, !dbg !59, !tbaa !42
164 %4 = load i32, ptr %localG, align 4, !dbg !60, !tbaa !42
165 store i32 %4, ptr %localA, align 4, !dbg !60, !tbaa !42
166 call void @llvm.lifetime.end.p0(i64 4, ptr %localG) #4, !dbg !61
167 call void @llvm.lifetime.end.p0(i64 4, ptr %localF) #4, !dbg !62
168 %5 = load i32, ptr %localA, align 4, !dbg !63, !tbaa !42
169 %cmp1 = icmp eq i32 %5, 7, !dbg !63
170 br i1 %cmp1, label %if.then2, label %if.end3, !dbg !63
172 if.then2: ; preds = %if.end
173 call void @llvm.lifetime.start.p0(i64 4, ptr %localH) #4, !dbg !64
174 call void @llvm.dbg.declare(metadata ptr %localH, metadata !34, metadata !DIExpression()), !dbg !64
175 store i32 8, ptr %localH, align 4, !dbg !64, !tbaa !42
176 %6 = load i32, ptr %localH, align 4, !dbg !65, !tbaa !42
177 store i32 %6, ptr %localA, align 4, !dbg !65, !tbaa !42
178 call void @llvm.lifetime.end.p0(i64 4, ptr %localH) #4, !dbg !66
179 br label %if.end3, !dbg !66
181 if.end3: ; preds = %if.then2, %if.end
182 %7 = load i32, ptr %localA, align 4, !dbg !67, !tbaa !42
183 %cmp4 = icmp ne i32 %7, 8, !dbg !67
184 %8 = zext i1 %cmp4 to i64, !dbg !67
185 %cond = select i1 %cmp4, i32 -1, i32 0, !dbg !67
186 call void @llvm.lifetime.end.p0(i64 4, ptr %localA) #4, !dbg !68
187 ret i32 %cond, !dbg !67
188 }
190 ; Function Attrs: nounwind readnone speculatable
191 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
193 ; Function Attrs: argmemonly nounwind
194 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2
196 ; Function Attrs: nounwind readnone
197 declare i32 @llvm.expect.i32(i32, i32) #3
199 ; Function Attrs: argmemonly nounwind
200 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2
202 attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
203 attributes #1 = { nounwind readnone speculatable }
204 attributes #2 = { argmemonly nounwind }
205 attributes #3 = { nounwind readnone }
206 attributes #4 = { nounwind }
208 !llvm.dbg.cu = !{!0}
209 !llvm.module.flags = !{!3, !4, !5, !6}
210 !llvm.ident = !{!7}
212 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 (trunk)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
213 !1 = !DIFile(filename: "<stdin>", directory: "C:/path/to/directory", checksumkind: CSK_MD5, checksum: "169b810b4f895de9a9e19d8d0634af5d")
214 !2 = !{}
215 !3 = !{i32 1, !"NumRegisterParameters", i32 0}
216 !4 = !{i32 2, !"CodeView", i32 1}
217 !5 = !{i32 2, !"Debug Info Version", i32 3}
218 !6 = !{i32 1, !"wchar_size", i32 2}
219 !7 = !{!"clang version 7.0.0 (trunk)"}
220 !8 = distinct !DISubprogram(name: "main", scope: !9, file: !9, line: 1, type: !10, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !16)
221 !9 = !DIFile(filename: "lexicalblock.cxx", directory: "C:/path/to/directory", checksumkind: CSK_MD5, checksum: "169b810b4f895de9a9e19d8d0634af5d")
222 !10 = !DISubroutineType(types: !11)
223 !11 = !{!12, !12, !13}
224 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
225 !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 32)
226 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !15, size: 32)
227 !15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
228 !16 = !{!17, !18, !19, !20, !22, !25, !27, !30, !32, !34}
229 !17 = !DILocalVariable(name: "argv", arg: 2, scope: !8, file: !9, line: 1, type: !13)
230 !18 = !DILocalVariable(name: "argc", arg: 1, scope: !8, file: !9, line: 1, type: !12)
231 !19 = !DILocalVariable(name: "localA", scope: !8, file: !9, line: 2, type: !12)
232 !20 = !DILocalVariable(name: "localB", scope: !21, file: !9, line: 5, type: !12)
233 !21 = distinct !DILexicalBlock(scope: !8, file: !9, line: 4)
234 !22 = !DILocalVariable(name: "localC", scope: !23, file: !9, line: 8, type: !12)
235 !23 = distinct !DILexicalBlock(scope: !24, file: !9, line: 7)
236 !24 = distinct !DILexicalBlock(scope: !21, file: !9, line: 7)
237 !25 = !DILocalVariable(name: "localD", scope: !26, file: !9, line: 13, type: !12)
238 !26 = distinct !DILexicalBlock(scope: !8, file: !9, line: 12)
239 !27 = !DILocalVariable(name: "localE", scope: !28, file: !9, line: 19, type: !12)
240 !28 = distinct !DILexicalBlock(scope: !29, file: !9, line: 18)
241 !29 = distinct !DILexicalBlock(scope: !8, file: !9, line: 17)
242 !30 = !DILocalVariable(name: "localF", scope: !31, file: !9, line: 25, type: !12)
243 !31 = distinct !DILexicalBlock(scope: !8, file: !9, line: 24)
244 !32 = !DILocalVariable(name: "localG", scope: !33, file: !9, line: 29, type: !12)
245 !33 = distinct !DILexicalBlock(scope: !31, file: !9, line: 28)
246 !34 = !DILocalVariable(name: "localH", scope: !35, file: !9, line: 35, type: !12)
247 !35 = distinct !DILexicalBlock(scope: !36, file: !9, line: 34)
248 !36 = distinct !DILexicalBlock(scope: !8, file: !9, line: 34)
249 !37 = !{!38, !38, i64 0}
250 !38 = !{!"any pointer", !39, i64 0}
251 !39 = !{!"omnipotent char", !40, i64 0}
252 !40 = !{!"Simple C++ TBAA"}
253 !41 = !DILocation(line: 1, scope: !8)
254 !42 = !{!43, !43, i64 0}
255 !43 = !{!"int", !39, i64 0}
256 !44 = !DILocation(line: 2, scope: !8)
257 !45 = !DILocation(line: 5, scope: !21)
258 !46 = !DILocation(line: 7, scope: !21)
259 !47 = !{!"branch_weights", i32 1, i32 2000}
260 !48 = !DILocation(line: 8, scope: !23)
261 !49 = !DILocation(line: 9, scope: !23)
262 !50 = !DILocation(line: 10, scope: !21)
263 !51 = !DILocation(line: 13, scope: !26)
264 !52 = !DILocation(line: 14, scope: !26)
265 !53 = !DILocation(line: 15, scope: !26)
266 !54 = !DILocation(line: 19, scope: !28)
267 !55 = !DILocation(line: 20, scope: !28)
268 !56 = !DILocation(line: 21, scope: !28)
269 !57 = !DILocation(line: 25, scope: !31)
270 !58 = !DILocation(line: 26, scope: !31)
271 !59 = !DILocation(line: 29, scope: !33)
272 !60 = !DILocation(line: 30, scope: !33)
273 !61 = !DILocation(line: 31, scope: !33)
274 !62 = !DILocation(line: 32, scope: !31)
275 !63 = !DILocation(line: 34, scope: !8)
276 !64 = !DILocation(line: 35, scope: !35)
277 !65 = !DILocation(line: 36, scope: !35)
278 !66 = !DILocation(line: 37, scope: !35)
279 !67 = !DILocation(line: 39, scope: !8)
280 !68 = !DILocation(line: 40, scope: !8)