1# RUN: llc -mtriple=arm-eabi -run-pass=livedebugvalues %s -o - | FileCheck %s
2#
3# Check that the debug information for variables are propagated into the correct blocks.
4#
5# Generated from the C source:
6#
7# int func2(int,  int);
8# void func(int a) {
9#   int b = func2(10, 11);
10#   if (a) {
11#     int c = func2(12, 13);
12#     for(int i = 1; i < a; i++) {
13#       func2(i, i+b);
14#     }
15#     func2(b,c);
16#   }
17#   func2(b,a);
18# }
19
20# CHECK: [[VAR_A:![0-9]+]] = !DILocalVariable(name: "a",
21# CHECK: [[VAR_B:![0-9]+]] = !DILocalVariable(name: "b",
22# CHECK: [[VAR_C:![0-9]+]] = !DILocalVariable(name: "c",
23# CHECK: [[VAR_I:![0-9]+]] = !DILocalVariable(name: "i",
24
25# CHECK: bb.0.entry
26# CHECK: DBG_VALUE debug-use %r0, debug-use _, [[VAR_A]]
27# CHECK: DBG_VALUE debug-use [[REG_A:%r[0-9]+]], debug-use _, [[VAR_A]]
28# CHECK: DBG_VALUE debug-use [[REG_B:%r[0-9]+]], debug-use _, [[VAR_B]]
29
30# CHECK: bb.1.if.then
31# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]
32# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]
33# CHECK: DBG_VALUE debug-use [[REG_C:%r[0-9]+]], debug-use _, [[VAR_C]]
34# CHECK: DBG_VALUE 1, 0, [[VAR_I]]
35
36# CHECK: bb.2.for.body
37# CHECK: DBG_VALUE debug-use [[REG_I:%r[0-9]+]], debug-use _, [[VAR_I]]
38# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use _, [[VAR_C]]
39# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]
40# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]
41# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use _, [[VAR_I]]
42
43# CHECK: bb.3.for.cond
44# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use _, [[VAR_C]]
45# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]
46# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]
47# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use _, [[VAR_I]]
48
49# CHECK: bb.4.for.cond.cleanup
50# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use _, [[VAR_C]]
51# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]
52# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]
53
54# CHECK: bb.5.if.end
55# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use _, [[VAR_B]]
56# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use _, [[VAR_A]]
57--- |
58  ; ModuleID = '/data/kwalker/work/OpenSource-llvm/llvm/test/CodeGen/ARM/dbg-range-extension.ll'
59  source_filename = "/data/kwalker/work/OpenSource-llvm/llvm/test/CodeGen/ARM/dbg-range-extension.ll"
60  target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
61  target triple = "arm---eabi"
62
63  ; Function Attrs: minsize nounwind optsize
64  define void @func(i32 %a) local_unnamed_addr #0 !dbg !8 {
65  entry:
66    tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !13, metadata !20), !dbg !21
67    %call = tail call i32 @func2(i32 10, i32 11) #0, !dbg !22
68    tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !23
69    %tobool = icmp eq i32 %a, 0, !dbg !24
70    br i1 %tobool, label %if.end, label %if.then, !dbg !25
71
72  if.then:                                          ; preds = %entry
73    %call1 = tail call i32 @func2(i32 12, i32 13) #0, !dbg !26
74    tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !15, metadata !20), !dbg !27
75    tail call void @llvm.dbg.value(metadata i32 1, i64 0, metadata !18, metadata !20), !dbg !28
76    br label %for.cond, !dbg !29
77
78  for.cond:                                         ; preds = %for.body, %if.then
79    %i.0 = phi i32 [ 1, %if.then ], [ %inc, %for.body ]
80    tail call void @llvm.dbg.value(metadata i32 %i.0, i64 0, metadata !18, metadata !20), !dbg !28
81    %cmp = icmp slt i32 %i.0, %a, !dbg !30
82    br i1 %cmp, label %for.body, label %for.cond.cleanup, !dbg !33
83
84  for.cond.cleanup:                                 ; preds = %for.cond
85    %call3 = tail call i32 @func2(i32 %call, i32 %call1) #0, !dbg !34
86    br label %if.end, !dbg !35
87
88  for.body:                                         ; preds = %for.cond
89    %0 = add i32 %call, %i.0, !dbg !36
90    %call2 = tail call i32 @func2(i32 %i.0, i32 %0) #0, !dbg !36
91    %inc = add nuw nsw i32 %i.0, 1, !dbg !38
92    tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !18, metadata !20), !dbg !28
93    br label %for.cond, !dbg !40, !llvm.loop !41
94
95  if.end:                                           ; preds = %for.cond.cleanup, %entry
96    %call4 = tail call i32 @func2(i32 %call, i32 %a) #0, !dbg !43
97    ret void, !dbg !44
98  }
99
100  ; Function Attrs: minsize optsize
101  declare i32 @func2(i32, i32) local_unnamed_addr #1
102
103  ; Function Attrs: nounwind readnone
104  declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
105
106  ; Function Attrs: nounwind
107  declare void @llvm.stackprotector(i8*, i8**) #3
108
109  attributes #0 = { minsize nounwind optsize }
110  attributes #1 = { minsize optsize }
111  attributes #2 = { nounwind readnone }
112  attributes #3 = { nounwind }
113
114  !llvm.dbg.cu = !{!0}
115  !llvm.module.flags = !{!3, !4, !5, !6}
116  !llvm.ident = !{!7}
117
118  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
119  !1 = !DIFile(filename: "loop.c", directory: "/tmp")
120  !2 = !{}
121  !3 = !{i32 2, !"Dwarf Version", i32 4}
122  !4 = !{i32 2, !"Debug Info Version", i32 3}
123  !5 = !{i32 1, !"wchar_size", i32 4}
124  !6 = !{i32 1, !"min_enum_size", i32 4}
125  !7 = !{!"clang version 4.0.0 (http://llvm.org/git/clang.git b8f10df3679b36f51e1de7c4351b82d297825089) (http://llvm.org/git/llvm.git c2a5d16d1e3b8c49f5bbb1ff87a76ac4f88edb89)"}
126  !8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !12)
127  !9 = !DISubroutineType(types: !10)
128  !10 = !{null, !11}
129  !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
130  !12 = !{!13, !14, !15, !18}
131  !13 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11)
132  !14 = !DILocalVariable(name: "b", scope: !8, file: !1, line: 3, type: !11)
133  !15 = !DILocalVariable(name: "c", scope: !16, file: !1, line: 5, type: !11)
134  !16 = distinct !DILexicalBlock(scope: !17, file: !1, line: 4, column: 9)
135  !17 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 6)
136  !18 = !DILocalVariable(name: "i", scope: !19, file: !1, line: 6, type: !11)
137  !19 = distinct !DILexicalBlock(scope: !16, file: !1, line: 6, column: 3)
138  !20 = !DIExpression()
139  !21 = !DILocation(line: 2, column: 15, scope: !8)
140  !22 = !DILocation(line: 3, column: 17, scope: !8)
141  !23 = !DILocation(line: 3, column: 13, scope: !8)
142  !24 = !DILocation(line: 4, column: 6, scope: !17)
143  !25 = !DILocation(line: 4, column: 6, scope: !8)
144  !26 = !DILocation(line: 5, column: 11, scope: !16)
145  !27 = !DILocation(line: 5, column: 7, scope: !16)
146  !28 = !DILocation(line: 6, column: 11, scope: !19)
147  !29 = !DILocation(line: 6, column: 7, scope: !19)
148  !30 = !DILocation(line: 6, column: 20, scope: !31)
149  !31 = !DILexicalBlockFile(scope: !32, file: !1, discriminator: 1)
150  !32 = distinct !DILexicalBlock(scope: !19, file: !1, line: 6, column: 3)
151  !33 = !DILocation(line: 6, column: 3, scope: !31)
152  !34 = !DILocation(line: 9, column: 3, scope: !16)
153  !35 = !DILocation(line: 10, column: 2, scope: !16)
154  !36 = !DILocation(line: 7, column: 4, scope: !37)
155  !37 = distinct !DILexicalBlock(scope: !32, file: !1, line: 6, column: 30)
156  !38 = !DILocation(line: 6, column: 26, scope: !39)
157  !39 = !DILexicalBlockFile(scope: !32, file: !1, discriminator: 3)
158  !40 = !DILocation(line: 6, column: 3, scope: !39)
159  !41 = distinct !{!41, !42}
160  !42 = !DILocation(line: 6, column: 3, scope: !16)
161  !43 = !DILocation(line: 11, column: 2, scope: !8)
162  !44 = !DILocation(line: 12, column: 1, scope: !8)
163
164...
165---
166name:            func
167alignment:       2
168exposesReturnsTwice: false
169legalized:       false
170regBankSelected: false
171selected:        false
172tracksRegLiveness: false
173liveins:
174  - { reg: '%r0' }
175calleeSavedRegisters: [ '%lr', '%d8', '%d9', '%d10', '%d11', '%d12', '%d13',
176                        '%d14', '%d15', '%q4', '%q5', '%q6', '%q7', '%r4',
177                        '%r5', '%r6', '%r7', '%r8', '%r9', '%r10', '%r11',
178                        '%s16', '%s17', '%s18', '%s19', '%s20', '%s21',
179                        '%s22', '%s23', '%s24', '%s25', '%s26', '%s27',
180                        '%s28', '%s29', '%s30', '%s31', '%d8_d10', '%d9_d11',
181                        '%d10_d12', '%d11_d13', '%d12_d14', '%d13_d15',
182                        '%q4_q5', '%q5_q6', '%q6_q7', '%q4_q5_q6_q7', '%r4_r5',
183                        '%r6_r7', '%r8_r9', '%r10_r11', '%d8_d9_d10', '%d9_d10_d11',
184                        '%d10_d11_d12', '%d11_d12_d13', '%d12_d13_d14',
185                        '%d13_d14_d15', '%d8_d10_d12', '%d9_d11_d13', '%d10_d12_d14',
186                        '%d11_d13_d15', '%d8_d10_d12_d14', '%d9_d11_d13_d15',
187                        '%d9_d10', '%d11_d12', '%d13_d14', '%d9_d10_d11_d12',
188                        '%d11_d12_d13_d14' ]
189frameInfo:
190  isFrameAddressTaken: false
191  isReturnAddressTaken: false
192  hasStackMap:     false
193  hasPatchPoint:   false
194  stackSize:       24
195  offsetAdjustment: 0
196  maxAlignment:    4
197  adjustsStack:    true
198  hasCalls:        true
199  maxCallFrameSize: 0
200  hasOpaqueSPAdjustment: false
201  hasVAStart:      false
202  hasMustTailInVarArgFunc: false
203stack:
204  - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '%lr' }
205  - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '%r11' }
206  - { id: 2, type: spill-slot, offset: -12, size: 4, alignment: 4, callee-saved-register: '%r7' }
207  - { id: 3, type: spill-slot, offset: -16, size: 4, alignment: 4, callee-saved-register: '%r6' }
208  - { id: 4, type: spill-slot, offset: -20, size: 4, alignment: 4, callee-saved-register: '%r5' }
209  - { id: 5, type: spill-slot, offset: -24, size: 4, alignment: 4, callee-saved-register: '%r4' }
210body:             |
211  bb.0.entry:
212    successors: %bb.5.if.end, %bb.1.if.then
213    liveins: %r0, %r4, %r5, %r6, %r7, %r11, %lr
214
215    %sp = frame-setup STMDB_UPD %sp, 14, _, killed %r4, killed %r5, killed %r6, killed %r7, killed %r11, killed %lr
216    frame-setup CFI_INSTRUCTION def_cfa_offset 24
217    frame-setup CFI_INSTRUCTION offset %lr, -4
218    frame-setup CFI_INSTRUCTION offset %r11, -8
219    frame-setup CFI_INSTRUCTION offset %r7, -12
220    frame-setup CFI_INSTRUCTION offset %r6, -16
221    frame-setup CFI_INSTRUCTION offset %r5, -20
222    frame-setup CFI_INSTRUCTION offset %r4, -24
223    DBG_VALUE debug-use %r0, debug-use _, !13, !20, debug-location !21
224    %r4 = MOVr killed %r0, 14, _, _
225    DBG_VALUE debug-use %r4, debug-use _, !13, !20, debug-location !21
226    %r0 = MOVi 10, 14, _, _, debug-location !22
227    %r1 = MOVi 11, 14, _, _, debug-location !22
228    BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def %r0, debug-location !22
229    %r5 = MOVr killed %r0, 14, _, _, debug-location !22
230    DBG_VALUE debug-use %r5, debug-use _, !14, !20, debug-location !23
231    CMPri %r4, 0, 14, _, implicit-def %cpsr, debug-location !25
232    Bcc %bb.5.if.end, 0, killed %cpsr
233
234  bb.1.if.then:
235    successors: %bb.3.for.cond
236    liveins: %r4, %r5
237
238    %r0 = MOVi 12, 14, _, _, debug-location !26
239    %r1 = MOVi 13, 14, _, _, debug-location !26
240    BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def %r0, debug-location !26
241    %r6 = MOVr killed %r0, 14, _, _, debug-location !26
242    DBG_VALUE debug-use %r6, debug-use _, !15, !20, debug-location !27
243    %r7 = MOVi 1, 14, _, _
244    DBG_VALUE 1, 0, !18, !20, debug-location !28
245    B %bb.3.for.cond
246
247  bb.2.for.body:
248    successors: %bb.3.for.cond
249    liveins: %r4, %r5, %r6, %r7
250
251    %r1 = ADDrr %r5, %r7, 14, _, _, debug-location !36
252    %r0 = MOVr %r7, 14, _, _, debug-location !36
253    BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def dead %r0, debug-location !36
254    %r7 = ADDri killed %r7, 1, 14, _, _, debug-location !38
255    DBG_VALUE debug-use %r7, debug-use _, !18, !20, debug-location !28
256
257  bb.3.for.cond:
258    successors: %bb.2.for.body, %bb.4.for.cond.cleanup
259    liveins: %r4, %r5, %r6, %r7
260
261    DBG_VALUE debug-use %r7, debug-use _, !18, !20, debug-location !28
262    CMPrr %r7, %r4, 14, _, implicit-def %cpsr, debug-location !33
263    Bcc %bb.2.for.body, 11, killed %cpsr, debug-location !33
264
265  bb.4.for.cond.cleanup:
266    successors: %bb.5.if.end
267    liveins: %r4, %r5, %r6
268
269    %r0 = MOVr %r5, 14, _, _, debug-location !34
270    %r1 = MOVr killed %r6, 14, _, _, debug-location !34
271    BL @func2, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit killed %r0, implicit killed %r1, implicit-def %sp, implicit-def dead %r0, debug-location !34
272
273  bb.5.if.end:
274    liveins: %r4, %r5
275
276    %r0 = MOVr killed %r5, 14, _, _, debug-location !43
277    %r1 = MOVr killed %r4, 14, _, _, debug-location !43
278    %sp = LDMIA_UPD %sp, 14, _, def %r4, def %r5, def %r6, def %r7, def %r11, def %lr, debug-location !43
279    TAILJMPd @func2, implicit %sp, implicit %sp, implicit killed %r0, implicit killed %r1, debug-location !43
280
281...
282