1# RUN: llc -mtriple thumbv7 -verify-machineinstrs -run-pass arm-ldst-opt %s -o - | FileCheck %s
2--- |
3  ; ModuleID = '/Volumes/Data/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll'
4  target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
5  target triple = "thumbv7"
6
7  %struct.s = type opaque
8
9  ; Function Attrs: nounwind
10  define arm_aapcscc i32 @f(%struct.s* %s, i32 %u, i8* %b, i32 %n) #0 !dbg !4 {
11  entry:
12    tail call void @llvm.dbg.value(metadata %struct.s* %s, i64 0, metadata !18, metadata !27), !dbg !28
13    tail call void @llvm.dbg.value(metadata i32 %u, i64 0, metadata !19, metadata !27), !dbg !28
14    tail call void @llvm.dbg.value(metadata i8* %b, i64 0, metadata !20, metadata !27), !dbg !28
15    tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !21, metadata !27), !dbg !28
16    %cmp = icmp ult i32 %n, 4, !dbg !29
17    br i1 %cmp, label %return, label %if.end, !dbg !31
18
19  if.end:                                           ; preds = %entry
20    tail call arm_aapcscc void @g(%struct.s* %s, i8* %b, i32 %n) #3, !dbg !32
21    br label %return, !dbg !33
22
23  return:                                           ; preds = %if.end, %entry
24    %retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ]
25    ret i32 %retval.0, !dbg !34
26  }
27
28  declare arm_aapcscc void @g(%struct.s*, i8*, i32) #1
29
30  ; Function Attrs: nounwind readnone
31  declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
32
33  attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
34  attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
35  attributes #2 = { nounwind readnone }
36  attributes #3 = { nounwind }
37
38  !llvm.dbg.cu = !{!0}
39  !llvm.module.flags = !{!22, !23, !24, !25}
40  !llvm.ident = !{!26}
41
42  !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0  (llvm/trunk 237059)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
43  !1 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm")
44  !2 = !{}
45  !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !17)
46  !5 = !DISubroutineType(types: !6)
47  !6 = !{!7, !8, !11, !12, !16}
48  !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
49  !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)
50  !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "s", file: !1, line: 5, baseType: !10)
51  !10 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 5, flags: DIFlagFwdDecl)
52  !11 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
53  !12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32, align: 32)
54  !13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !14)
55  !14 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !1, line: 2, baseType: !15)
56  !15 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
57  !16 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !1, line: 3, baseType: !11)
58  !17 = !{!18, !19, !20, !21}
59  !18 = !DILocalVariable(name: "s", arg: 1, scope: !4, file: !1, line: 9, type: !8)
60  !19 = !DILocalVariable(name: "u", arg: 2, scope: !4, file: !1, line: 9, type: !11)
61  !20 = !DILocalVariable(name: "b", arg: 3, scope: !4, file: !1, line: 9, type: !12)
62  !21 = !DILocalVariable(name: "n", arg: 4, scope: !4, file: !1, line: 9, type: !16)
63  !22 = !{i32 2, !"Dwarf Version", i32 4}
64  !23 = !{i32 2, !"Debug Info Version", i32 3}
65  !24 = !{i32 1, !"wchar_size", i32 4}
66  !25 = !{i32 1, !"min_enum_size", i32 4}
67  !26 = !{!"clang version 3.7.0  (llvm/trunk 237059)"}
68  !27 = !DIExpression()
69  !28 = !DILocation(line: 9, scope: !4)
70  !29 = !DILocation(line: 10, scope: !30)
71  !30 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10)
72  !31 = !DILocation(line: 10, scope: !4)
73  !32 = !DILocation(line: 13, scope: !4)
74  !33 = !DILocation(line: 14, scope: !4)
75  !34 = !DILocation(line: 15, scope: !4)
76
77...
78---
79name:            f
80alignment:       1
81exposesReturnsTwice: false
82tracksRegLiveness: true
83liveins:
84  - { reg: '$r0' }
85  - { reg: '$r1' }
86  - { reg: '$r2' }
87  - { reg: '$r3' }
88calleeSavedRegisters: [ '$lr', '$d8', '$d9', '$d10', '$d11', '$d12', '$d13',
89                        '$d14', '$d15', '$q4', '$q5', '$q6', '$q7', '$r4',
90                        '$r5', '$r6', '$r7', '$r8', '$r9', '$r10', '$r11',
91                        '$s16', '$s17', '$s18', '$s19', '$s20', '$s21',
92                        '$s22', '$s23', '$s24', '$s25', '$s26', '$s27',
93                        '$s28', '$s29', '$s30', '$s31', '$d8_d10', '$d9_d11',
94                        '$d10_d12', '$d11_d13', '$d12_d14', '$d13_d15',
95                        '$q4_q5', '$q5_q6', '$q6_q7', '$q4_q5_q6_q7', '$r4_r5',
96                        '$r6_r7', '$r8_r9', '$r10_r11', '$d8_d9_d10', '$d9_d10_d11',
97                        '$d10_d11_d12', '$d11_d12_d13', '$d12_d13_d14',
98                        '$d13_d14_d15', '$d8_d10_d12', '$d9_d11_d13', '$d10_d12_d14',
99                        '$d11_d13_d15', '$d8_d10_d12_d14', '$d9_d11_d13_d15',
100                        '$d9_d10', '$d11_d12', '$d13_d14', '$d9_d10_d11_d12',
101                        '$d11_d12_d13_d14' ]
102frameInfo:
103  isFrameAddressTaken: false
104  isReturnAddressTaken: false
105  hasStackMap:     false
106  hasPatchPoint:   false
107  stackSize:       8
108  offsetAdjustment: 0
109  maxAlignment:    4
110  adjustsStack:    true
111  hasCalls:        true
112  maxCallFrameSize: 0
113  hasOpaqueSPAdjustment: false
114  hasVAStart:      false
115  hasMustTailInVarArgFunc: false
116stack:
117  - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', callee-saved-restored: false }
118  - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r7', callee-saved-restored: true }
119body:             |
120  bb.0.entry:
121    liveins: $r0, $r1, $r2, $r3, $lr, $r7
122
123    DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
124    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
125    DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
126    DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
127    t2CMPri $r3, 4, 14, $noreg, implicit-def $cpsr, debug-location !31
128    t2Bcc %bb.2.if.end, 2, killed $cpsr
129
130  bb.1:
131    liveins: $lr, $r7
132
133    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
134    $r0 = t2MOVi -1, 14, $noreg, $noreg
135    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
136    tBX_RET 14, $noreg, implicit $r0, debug-location !34
137
138  bb.2.if.end:
139    liveins: $r0, $r2, $r3, $r7, $lr
140
141    $sp = frame-setup t2STMDB_UPD $sp, 14, $noreg, killed $r7, killed $lr
142    frame-setup CFI_INSTRUCTION def_cfa_offset 8
143    frame-setup CFI_INSTRUCTION offset $lr, -4
144    frame-setup CFI_INSTRUCTION offset $r7, -8
145    DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
146    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
147    DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
148    DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
149    $r1 = COPY killed $r2, debug-location !32
150    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
151    $r2 = COPY killed $r3, debug-location !32
152    tBL 14, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit-def $sp, debug-location !32
153    $r0 = t2MOVi 0, 14, $noreg, $noreg
154    $sp = t2LDMIA_UPD $sp, 14, $noreg, def $r7, def $lr
155    tBX_RET 14, $noreg, implicit $r0, debug-location !34
156# Verify that the DBG_VALUE is ignored.
157# CHECK: $sp = t2LDMIA_RET $sp, 14, $noreg, def $r7, def $pc, implicit $r0
158
159...
160