1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
| # RUN: llc -mtriple thumbv7 -verify-machineinstrs -run-pass arm-ldst-opt %s -o - | FileCheck %s
--- |
; ModuleID = '/Volumes/Data/llvm/test/CodeGen/ARM/sched-it-debug-nodes.ll'
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7"
%struct.s = type opaque
; Function Attrs: nounwind
define arm_aapcscc i32 @f(%struct.s* %s, i32 %u, i8* %b, i32 %n) #0 !dbg !4 {
entry:
tail call void @llvm.dbg.value(metadata %struct.s* %s, i64 0, metadata !18, metadata !27), !dbg !28
tail call void @llvm.dbg.value(metadata i32 %u, i64 0, metadata !19, metadata !27), !dbg !28
tail call void @llvm.dbg.value(metadata i8* %b, i64 0, metadata !20, metadata !27), !dbg !28
tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !21, metadata !27), !dbg !28
%cmp = icmp ult i32 %n, 4, !dbg !29
br i1 %cmp, label %return, label %if.end, !dbg !31
if.end: ; preds = %entry
tail call arm_aapcscc void @g(%struct.s* %s, i8* %b, i32 %n) #3, !dbg !32
br label %return, !dbg !33
return: ; preds = %if.end, %entry
%retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ]
ret i32 %retval.0, !dbg !34
}
declare arm_aapcscc void @g(%struct.s*, i8*, i32) #1
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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" }
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" }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!22, !23, !24, !25}
!llvm.ident = !{!26}
!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)
!1 = !DIFile(filename: "<stdin>", directory: "/Users/compnerd/Source/llvm")
!2 = !{}
!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)
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !8, !11, !12, !16}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)
!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "s", file: !1, line: 5, baseType: !10)
!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 5, flags: DIFlagFwdDecl)
!11 = !DIBasicType(name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32, align: 32)
!13 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !14)
!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint8_t", file: !1, line: 2, baseType: !15)
!15 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
!16 = !DIDerivedType(tag: DW_TAG_typedef, name: "size_t", file: !1, line: 3, baseType: !11)
!17 = !{!18, !19, !20, !21}
!18 = !DILocalVariable(name: "s", arg: 1, scope: !4, file: !1, line: 9, type: !8)
!19 = !DILocalVariable(name: "u", arg: 2, scope: !4, file: !1, line: 9, type: !11)
!20 = !DILocalVariable(name: "b", arg: 3, scope: !4, file: !1, line: 9, type: !12)
!21 = !DILocalVariable(name: "n", arg: 4, scope: !4, file: !1, line: 9, type: !16)
!22 = !{i32 2, !"Dwarf Version", i32 4}
!23 = !{i32 2, !"Debug Info Version", i32 3}
!24 = !{i32 1, !"wchar_size", i32 4}
!25 = !{i32 1, !"min_enum_size", i32 4}
!26 = !{!"clang version 3.7.0 (llvm/trunk 237059)"}
!27 = !DIExpression()
!28 = !DILocation(line: 9, scope: !4)
!29 = !DILocation(line: 10, scope: !30)
!30 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10)
!31 = !DILocation(line: 10, scope: !4)
!32 = !DILocation(line: 13, scope: !4)
!33 = !DILocation(line: 14, scope: !4)
!34 = !DILocation(line: 15, scope: !4)
...
---
name: f
alignment: 2
exposesReturnsTwice: false
tracksRegLiveness: true
liveins:
- { reg: '$r0' }
- { reg: '$r1' }
- { reg: '$r2' }
- { reg: '$r3' }
calleeSavedRegisters: [ '$lr', '$d8', '$d9', '$d10', '$d11', '$d12', '$d13',
'$d14', '$d15', '$q4', '$q5', '$q6', '$q7', '$r4',
'$r5', '$r6', '$r7', '$r8', '$r9', '$r10', '$r11',
'$s16', '$s17', '$s18', '$s19', '$s20', '$s21',
'$s22', '$s23', '$s24', '$s25', '$s26', '$s27',
'$s28', '$s29', '$s30', '$s31', '$d8_d10', '$d9_d11',
'$d10_d12', '$d11_d13', '$d12_d14', '$d13_d15',
'$q4_q5', '$q5_q6', '$q6_q7', '$q4_q5_q6_q7', '$r4_r5',
'$r6_r7', '$r8_r9', '$r10_r11', '$d8_d9_d10', '$d9_d10_d11',
'$d10_d11_d12', '$d11_d12_d13', '$d12_d13_d14',
'$d13_d14_d15', '$d8_d10_d12', '$d9_d11_d13', '$d10_d12_d14',
'$d11_d13_d15', '$d8_d10_d12_d14', '$d9_d11_d13_d15',
'$d9_d10', '$d11_d12', '$d13_d14', '$d9_d10_d11_d12',
'$d11_d12_d13_d14' ]
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 8
offsetAdjustment: 0
maxAlignment: 4
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
stack:
- { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', callee-saved-restored: false }
- { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r7', callee-saved-restored: true }
body: |
bb.0.entry:
liveins: $r0, $r1, $r2, $r3, $lr, $r7
DBG_VALUE $r0, $noreg, !18, !27, debug-location !28
DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
DBG_VALUE $r2, $noreg, !20, !27, debug-location !28
DBG_VALUE $r3, $noreg, !21, !27, debug-location !28
t2CMPri $r3, 4, 14, $noreg, implicit-def $cpsr, debug-location !31
t2Bcc %bb.2.if.end, 2, killed $cpsr
bb.1:
liveins: $lr, $r7
DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
$r0 = t2MOVi -1, 14, $noreg, $noreg
DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
tBX_RET 14, $noreg, implicit $r0, debug-location !34
bb.2.if.end:
liveins: $r0, $r2, $r3, $r7, $lr
$sp = frame-setup t2STMDB_UPD $sp, 14, $noreg, killed $r7, killed $lr
frame-setup CFI_INSTRUCTION def_cfa_offset 8
frame-setup CFI_INSTRUCTION offset $lr, -4
frame-setup CFI_INSTRUCTION offset $r7, -8
DBG_VALUE $r0, $noreg, !18, !27, debug-location !28
DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
DBG_VALUE $r2, $noreg, !20, !27, debug-location !28
DBG_VALUE $r3, $noreg, !21, !27, debug-location !28
$r1 = COPY killed $r2, debug-location !32
DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
$r2 = COPY killed $r3, debug-location !32
tBL 14, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit-def $sp, debug-location !32
$r0 = t2MOVi 0, 14, $noreg, $noreg
$sp = t2LDMIA_UPD $sp, 14, $noreg, def $r7, def $lr
tBX_RET 14, $noreg, implicit $r0, debug-location !34
# Verify that the DBG_VALUE is ignored.
# CHECK: $sp = t2LDMIA_RET $sp, 14, $noreg, def $r7, def $pc, implicit $r0
...
|