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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -use-dbg-addr -passes='sroa<preserve-cfg>' -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-PRESERVE-CFG
; RUN: opt -use-dbg-addr -passes='sroa<modify-cfg>' -S < %s | FileCheck %s --check-prefixes=CHECK,CHECK-MODIFY-CFG
; ModuleID = '<stdin>'
source_filename = "newvars.c"
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc19.0.24215"
%struct.Pair = type { i32, i32 }
@pair = internal global %struct.Pair zeroinitializer
; Function Attrs: nounwind uwtable
define void @if_else(i32 %cond, i32 %a, i32 %b) !dbg !8 {
; CHECK-LABEL: @if_else(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[A:%.*]], metadata [[META20:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg [[DBG21:![0-9]+]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[B:%.*]], metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg [[DBG21]]
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[COND:%.*]], 0, !dbg [[DBG22:![0-9]+]]
; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]], !dbg [[DBG24:![0-9]+]]
; CHECK: if.then:
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 0, metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg [[DBG21]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[A]], metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg [[DBG21]]
; CHECK-NEXT: br label [[IF_END:%.*]], !dbg [[DBG25:![0-9]+]]
; CHECK: if.else:
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[B]], metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg [[DBG21]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 0, metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg [[DBG21]]
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[P_SROA_4_0:%.*]] = phi i32 [ [[A]], [[IF_THEN]] ], [ 0, [[IF_ELSE]] ], !dbg [[DBG27:![0-9]+]]
; CHECK-NEXT: [[P_SROA_0_0:%.*]] = phi i32 [ 0, [[IF_THEN]] ], [ [[B]], [[IF_ELSE]] ], !dbg [[DBG27]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[P_SROA_0_0]], metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg [[DBG21]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[P_SROA_4_0]], metadata [[META20]], metadata !DIExpression(DW_OP_LLVM_fragment, 32, 32)), !dbg [[DBG21]]
; CHECK-NEXT: store i32 [[P_SROA_0_0]], ptr @pair, align 4, !dbg [[DBG28:![0-9]+]]
; CHECK-NEXT: store i32 [[P_SROA_4_0]], ptr getelementptr inbounds (i8, ptr @pair, i64 4), align 4, !dbg [[DBG28]]
; CHECK-NEXT: ret void
;
entry:
%p = alloca %struct.Pair, align 4
call void @llvm.dbg.addr(metadata ptr %p, metadata !20, metadata !DIExpression()), !dbg !26
store i32 %a, ptr %p, align 4, !dbg !28
%y = getelementptr inbounds %struct.Pair, ptr %p, i32 0, i32 1, !dbg !34
store i32 %b, ptr %y, align 4, !dbg !35
%tobool = icmp ne i32 %cond, 0, !dbg !37
br i1 %tobool, label %if.then, label %if.else, !dbg !39
if.then: ; preds = %entry
store i32 0, ptr %p, align 4, !dbg !42
%y2 = getelementptr inbounds %struct.Pair, ptr %p, i32 0, i32 1, !dbg !43
store i32 %a, ptr %y2, align 4, !dbg !44
br label %if.end, !dbg !45
if.else: ; preds = %entry
store i32 %b, ptr %p, align 4, !dbg !48
%y4 = getelementptr inbounds %struct.Pair, ptr %p, i32 0, i32 1, !dbg !49
store i32 0, ptr %y4, align 4, !dbg !50
br label %if.end
if.end: ; preds = %if.else, %if.then
call void @llvm.memcpy.p0.p0.i64(ptr align 4 @pair, ptr align 4 %p, i64 8, i1 false), !dbg !51
ret void
}
; Function Attrs: argmemonly nounwind
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #2
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.addr(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "newvars.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 2}
!6 = !{i32 7, !"PIC Level", i32 2}
!7 = !{!"clang version 6.0.0 "}
!8 = distinct !DISubprogram(name: "if_else", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !16)
!9 = !DISubroutineType(types: !10)
!10 = !{!11, !14, !14, !14}
!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Pair", file: !1, line: 1, size: 64, elements: !12)
!12 = !{!13, !15}
!13 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !11, file: !1, line: 1, baseType: !14, size: 32)
!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!15 = !DIDerivedType(tag: DW_TAG_member, name: "y", scope: !11, file: !1, line: 1, baseType: !14, size: 32, offset: 32)
!16 = !{!17, !18, !19, !20}
!17 = !DILocalVariable(name: "b", arg: 3, scope: !8, file: !1, line: 2, type: !14)
!18 = !DILocalVariable(name: "a", arg: 2, scope: !8, file: !1, line: 2, type: !14)
!19 = !DILocalVariable(name: "cond", arg: 1, scope: !8, file: !1, line: 2, type: !14)
!20 = !DILocalVariable(name: "p", scope: !8, file: !1, line: 3, type: !11)
!22 = !DILocation(line: 2, column: 42, scope: !8)
!23 = !DILocation(line: 2, column: 35, scope: !8)
!24 = !DILocation(line: 2, column: 25, scope: !8)
!25 = !DILocation(line: 3, column: 3, scope: !8)
!26 = !DILocation(line: 3, column: 15, scope: !8)
!27 = !DILocation(line: 4, column: 5, scope: !8)
!28 = !DILocation(line: 4, column: 7, scope: !8)
!29 = !{!30, !31, i64 0}
!30 = !{!"Pair", !31, i64 0, !31, i64 4}
!31 = !{!"int", !32, i64 0}
!32 = !{!"omnipotent char", !33, i64 0}
!33 = !{!"Simple C/C++ TBAA"}
!34 = !DILocation(line: 5, column: 5, scope: !8)
!35 = !DILocation(line: 5, column: 7, scope: !8)
!36 = !{!30, !31, i64 4}
!37 = !DILocation(line: 6, column: 7, scope: !38)
!38 = distinct !DILexicalBlock(scope: !8, file: !1, line: 6, column: 7)
!39 = !DILocation(line: 6, column: 7, scope: !8)
!40 = !DILocation(line: 7, column: 7, scope: !41)
!41 = distinct !DILexicalBlock(scope: !38, file: !1, line: 6, column: 13)
!42 = !DILocation(line: 7, column: 9, scope: !41)
!43 = !DILocation(line: 8, column: 7, scope: !41)
!44 = !DILocation(line: 8, column: 9, scope: !41)
!45 = !DILocation(line: 9, column: 3, scope: !41)
!46 = !DILocation(line: 10, column: 7, scope: !47)
!47 = distinct !DILexicalBlock(scope: !38, file: !1, line: 9, column: 10)
!48 = !DILocation(line: 10, column: 9, scope: !47)
!49 = !DILocation(line: 11, column: 7, scope: !47)
!50 = !DILocation(line: 11, column: 9, scope: !47)
!51 = !DILocation(line: 13, column: 10, scope: !8)
!52 = !{i64 0, i64 4, !53, i64 4, i64 4, !53}
!53 = !{!31, !31, i64 0}
!54 = !DILocation(line: 14, column: 1, scope: !8)
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK-MODIFY-CFG: {{.*}}
; CHECK-PRESERVE-CFG: {{.*}}
|
