1 # RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s
3 # Test the extension of debug ranges from predecessors.
4 # Generated from the source file LiveDebugValues.c:
7 # extern int inc(int n);
8 # extern int change(int n);
9 # extern int modify(int n);
10 # int main(int argc, char **argv) {
19 # m = m + n; // var `m' doesn't has a dbg.value
22 # m = inc(n); // var `m' doesn't has a dbg.value
23 # printf("m(main): %d\n", m);
26 # with clang -g -O3 -c -emit-llvm LiveDebugValues.c -S -o live-debug-values.ll
27 # then llc -stop-after stackmap-liveness live-debug-values.ll -o /dev/null > live-debug-values.mir
28 # This case will also produce multiple locations but only the debug range
29 # extension is tested here. This test case is tested with DWARF information under
30 # llvm/test/DebugInfo/live-debug-values.ll and present here for testing under
31 # MIR->MIR serialization.
33 # DBG_VALUE for variable "n" is extended into %bb.5 from its predecessors %bb.3
35 # CHECK: ![[N_VAR:[0-9]+]] = !DILocalVariable(name: "n",{{.*}})
37 # CHECK: bb.5.if.end.7:
38 # CHECK: DBG_VALUE $ebx, $noreg, ![[N_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
42 ; ModuleID = 'live-debug-values.ll'
43 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
44 target triple = "x86_64-unknown-linux-gnu"
46 @m = common global i32 0, align 4, !dbg !16
47 @.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1
49 ; Function Attrs: nounwind uwtable
50 define i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !4 {
52 tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !12, metadata !20), !dbg !21
53 tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !13, metadata !20), !dbg !22
54 %cmp = icmp eq i32 %argc, 2, !dbg !24
55 br i1 %cmp, label %if.else, label %if.end, !dbg !26
57 if.else: ; preds = %entry
58 %arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27
59 %0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28
60 %call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #4, !dbg !32
61 tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !33
64 if.end: ; preds = %if.else, %entry
65 %n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ]
66 %call1 = tail call i32 @change(i32 %n.0) #4, !dbg !34
67 tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !14, metadata !20), !dbg !33
68 %cmp2 = icmp sgt i32 %call1, 10, !dbg !35
69 br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37
71 if.then.3: ; preds = %if.end
72 %call4 = tail call i32 @modify(i32 %call1) #4, !dbg !38
73 %add = add nsw i32 %call4, %call1, !dbg !40
74 br label %if.end.7, !dbg !41
76 if.else.5: ; preds = %if.end
77 %call6 = tail call i32 @inc(i32 %call1) #4, !dbg !42
80 if.end.7: ; preds = %if.else.5, %if.then.3
81 %storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ]
82 store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44
83 %call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #4, !dbg !46
87 declare i32 @atoi(...) #1
89 declare i32 @change(i32) #1
91 declare i32 @modify(i32) #1
93 declare i32 @inc(i32) #1
95 ; Function Attrs: nounwind
96 declare i32 @printf(i8* nocapture readonly, ...) #2
98 ; Function Attrs: nounwind readnone
99 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3
101 attributes #0 = { nounwind uwtable }
102 attributes #1 = { nounwind }
103 attributes #2 = { nounwind }
104 attributes #3 = { nounwind readnone }
105 attributes #4 = { nounwind }
108 !llvm.module.flags = !{!17, !18}
111 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !15)
112 !1 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram")
114 !4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
115 !5 = !DISubroutineType(types: !6)
117 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
118 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
119 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
120 !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
121 !11 = !{!12, !13, !14}
122 !12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
123 !13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
124 !14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
126 !16 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true), expr: !DIExpression())
127 !17 = !{i32 2, !"Dwarf Version", i32 4}
128 !18 = !{i32 2, !"Debug Info Version", i32 3}
129 !19 = !{!"clang version 3.8.0 (trunk 253049)"}
130 !20 = !DIExpression()
131 !21 = !DILocation(line: 6, column: 14, scope: !4)
132 !22 = !DILocation(line: 6, column: 27, scope: !23)
133 !23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
134 !24 = !DILocation(line: 8, column: 12, scope: !25)
135 !25 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7)
136 !26 = !DILocation(line: 8, column: 7, scope: !4)
137 !27 = !DILocation(line: 11, column: 14, scope: !25)
138 !28 = !{!29, !29, i64 0}
139 !29 = !{!"any pointer", !30, i64 0}
140 !30 = !{!"omnipotent char", !31, i64 0}
141 !31 = !{!"Simple C/C++ TBAA"}
142 !32 = !DILocation(line: 11, column: 9, scope: !25)
143 !33 = !DILocation(line: 7, column: 7, scope: !23)
144 !34 = !DILocation(line: 12, column: 7, scope: !4)
145 !35 = !DILocation(line: 13, column: 9, scope: !36)
146 !36 = distinct !DILexicalBlock(scope: !4, file: !1, line: 13, column: 7)
147 !37 = !DILocation(line: 13, column: 7, scope: !4)
148 !38 = !DILocation(line: 14, column: 9, scope: !39)
149 !39 = distinct !DILexicalBlock(scope: !36, file: !1, line: 13, column: 15)
150 !40 = !DILocation(line: 15, column: 11, scope: !39)
151 !41 = !DILocation(line: 16, column: 3, scope: !39)
152 !42 = !DILocation(line: 18, column: 9, scope: !36)
153 !43 = !DILocation(line: 15, column: 7, scope: !39)
154 !44 = !{!45, !45, i64 0}
155 !45 = !{!"int", !30, i64 0}
156 !46 = !DILocation(line: 19, column: 3, scope: !4)
157 !47 = !DILocation(line: 20, column: 3, scope: !4)
163 exposesReturnsTwice: false
164 tracksRegLiveness: true
168 calleeSavedRegisters: [ '$bh', '$bl', '$bp', '$bpl', '$bx', '$ebp', '$ebx',
169 '$rbp', '$rbx', '$r12', '$r13', '$r14', '$r15',
170 '$r12b', '$r13b', '$r14b', '$r15b', '$r12d', '$r13d',
171 '$r14d', '$r15d', '$r12w', '$r13w', '$r14w', '$r15w' ]
173 isFrameAddressTaken: false
174 isReturnAddressTaken: false
183 hasOpaqueSPAdjustment: false
185 hasMustTailInVarArgFunc: false
187 - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$rbx' }
190 successors: %bb.1.if.else(16), %bb.2.if.end(16)
191 liveins: $edi, $rsi, $rbx
193 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
194 CFI_INSTRUCTION def_cfa_offset 16
195 CFI_INSTRUCTION offset $rbx, -16
196 DBG_VALUE $edi, _, !12, !20, debug-location !21
197 DBG_VALUE $rsi, _, !13, !20, debug-location !22
199 DBG_VALUE $eax, _, !12, !20, debug-location !21
201 CMP32ri8 killed $eax, 2, implicit-def $eflags, debug-location !26
202 JCC_1 %bb.2.if.end, 5, implicit $eflags
205 successors: %bb.2.if.end(0)
208 DBG_VALUE $rsi, _, !13, !20, debug-location !22
209 $rdi = MOV64rm killed $rsi, 1, _, 8, _, debug-location !27 :: (load 8 from %ir.arrayidx, !tbaa !28)
210 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !32
211 CALL64pcrel32 @atoi, csr_64, implicit $rsp, implicit $rdi, implicit $al, implicit-def $rsp, implicit-def $eax, debug-location !32
212 $edi = MOV32rr $eax, debug-location !32
213 DBG_VALUE $edi, _, !14, !20, debug-location !33
216 successors: %bb.3.if.then.3(16), %bb.4.if.else.5(16)
219 CALL64pcrel32 @change, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !34
220 $ebx = MOV32rr $eax, debug-location !34
221 DBG_VALUE $ebx, _, !14, !20, debug-location !33
222 CMP32ri8 $ebx, 11, implicit-def $eflags, debug-location !37
223 JCC_1 %bb.4.if.else.5, 12, implicit killed $eflags, debug-location !37
226 successors: %bb.5.if.end.7(0)
229 DBG_VALUE $ebx, _, !14, !20, debug-location !33
230 $edi = MOV32rr $ebx, debug-location !38
231 CALL64pcrel32 @modify, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !38
232 $ecx = MOV32rr $eax, debug-location !38
233 $ecx = ADD32rr killed $ecx, killed $ebx, implicit-def dead $eflags, debug-location !40
237 successors: %bb.5.if.end.7(0)
240 DBG_VALUE $ebx, _, !14, !20, debug-location !33
241 $edi = MOV32rr killed $ebx, debug-location !42
242 CALL64pcrel32 @inc, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !42
243 $ecx = MOV32rr $eax, debug-location !42
248 MOV32mr $rip, 1, _, @m, _, $ecx, debug-location !43 :: (store 4 into @m, !tbaa !44)
249 dead undef $edi = MOV32ri @.str, implicit-def $rdi, debug-location !46
250 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !47
251 $esi = MOV32rr killed $ecx, debug-location !46
252 CALL64pcrel32 @printf, csr_64, implicit $rsp, implicit $rdi, implicit $esi, implicit $al, implicit-def $rsp, implicit-def dead $eax, debug-location !46
253 $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !47
254 $rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !47
255 RETQ $eax, debug-location !47