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
|
;RUN: opt < %s -passes=loop-reroll -S | FileCheck %s
;void foo(ptr restrict a, ptr restrict b, int n) {
; for(int i = 0; i < n; i+=4) {
; a[i] = b[i];
; a[i+1] = b[i+1];
; a[i+2] = b[i+2];
; a[i+3] = b[i+3];
; }
;}
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "armv4t--linux-gnueabi"
; Function Attrs: nounwind
define void @foo(ptr noalias nocapture %a, ptr noalias nocapture readonly %b, i32 %n) #0 !dbg !4 {
entry:
;CHECK-LABEL: @foo
tail call void @llvm.dbg.value(metadata ptr %a, metadata !12, metadata !22), !dbg !23
tail call void @llvm.dbg.value(metadata ptr %b, metadata !13, metadata !22), !dbg !24
tail call void @llvm.dbg.value(metadata i32 %n, metadata !14, metadata !22), !dbg !25
tail call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !22), !dbg !26
%cmp.30 = icmp sgt i32 %n, 0, !dbg !27
br i1 %cmp.30, label %for.body.preheader, label %for.cond.cleanup, !dbg !29
for.body.preheader: ; preds = %entry
br label %for.body, !dbg !30
for.cond.cleanup.loopexit: ; preds = %for.body
br label %for.cond.cleanup, !dbg !32
for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
ret void, !dbg !32
for.body: ; preds = %for.body.preheader, %for.body
;CHECK: for.body:
;CHECK: %indvar = phi i32 [ %indvar.next, %for.body ], [ 0, {{.*}} ]
;CHECK: load
;CHECK: store
;CHECK-NOT: load
;CHECK-NOT: store
;CHECK: call void @llvm.dbg.value
;CHECK: %indvar.next = add i32 %indvar, 1
;CHECK: icmp eq i32 %indvar
%i.031 = phi i32 [ %add13, %for.body ], [ 0, %for.body.preheader ]
%arrayidx = getelementptr inbounds float, ptr %b, i32 %i.031, !dbg !30
%0 = load i32, ptr %arrayidx, align 4, !dbg !30, !tbaa !33
%arrayidx1 = getelementptr inbounds float, ptr %a, i32 %i.031, !dbg !37
store i32 %0, ptr %arrayidx1, align 4, !dbg !38, !tbaa !33
%add = or i32 %i.031, 1, !dbg !39
%arrayidx2 = getelementptr inbounds float, ptr %b, i32 %add, !dbg !40
%1 = load i32, ptr %arrayidx2, align 4, !dbg !40, !tbaa !33
%arrayidx4 = getelementptr inbounds float, ptr %a, i32 %add, !dbg !41
store i32 %1, ptr %arrayidx4, align 4, !dbg !42, !tbaa !33
%add5 = or i32 %i.031, 2, !dbg !43
%arrayidx6 = getelementptr inbounds float, ptr %b, i32 %add5, !dbg !44
%2 = load i32, ptr %arrayidx6, align 4, !dbg !44, !tbaa !33
%arrayidx8 = getelementptr inbounds float, ptr %a, i32 %add5, !dbg !45
store i32 %2, ptr %arrayidx8, align 4, !dbg !46, !tbaa !33
%add9 = or i32 %i.031, 3, !dbg !47
%arrayidx10 = getelementptr inbounds float, ptr %b, i32 %add9, !dbg !48
%3 = load i32, ptr %arrayidx10, align 4, !dbg !48, !tbaa !33
%arrayidx12 = getelementptr inbounds float, ptr %a, i32 %add9, !dbg !49
store i32 %3, ptr %arrayidx12, align 4, !dbg !50, !tbaa !33
%add13 = add nuw nsw i32 %i.031, 4, !dbg !51
tail call void @llvm.dbg.value(metadata i32 %add13, metadata !15, metadata !22), !dbg !26
%cmp = icmp slt i32 %add13, %n, !dbg !27
br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !29
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="arm7tdmi" "target-features"="+strict-align" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!17, !18, !19, !20}
!llvm.ident = !{!21}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "test.c", directory: "/home/weimingz/llvm-build/release/community-tip")
!2 = !{}
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7, !7, !10}
!7 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !8)
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)
!9 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!11 = !{!12, !13, !14, !15}
!12 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 1, type: !7)
!13 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 1, type: !7)
!14 = !DILocalVariable(name: "n", arg: 3, scope: !4, file: !1, line: 1, type: !10)
!15 = !DILocalVariable(name: "i", scope: !16, file: !1, line: 2, type: !10)
!16 = distinct !DILexicalBlock(scope: !4, file: !1, line: 2, column: 3)
!17 = !{i32 2, !"Dwarf Version", i32 4}
!18 = !{i32 2, !"Debug Info Version", i32 3}
!19 = !{i32 1, !"wchar_size", i32 4}
!20 = !{i32 1, !"min_enum_size", i32 4}
!21 = !{!"clang version 3.8.0"}
!22 = !DIExpression()
!23 = !DILocation(line: 1, column: 27, scope: !4)
!24 = !DILocation(line: 1, column: 47, scope: !4)
!25 = !DILocation(line: 1, column: 54, scope: !4)
!26 = !DILocation(line: 2, column: 11, scope: !16)
!27 = !DILocation(line: 2, column: 20, scope: !28)
!28 = distinct !DILexicalBlock(scope: !16, file: !1, line: 2, column: 3)
!29 = !DILocation(line: 2, column: 3, scope: !16)
!30 = !DILocation(line: 3, column: 12, scope: !31)
!31 = distinct !DILexicalBlock(scope: !28, file: !1, line: 2, column: 31)
!32 = !DILocation(line: 8, column: 1, scope: !4)
!33 = !{!34, !34, i64 0}
!34 = !{!"float", !35, i64 0}
!35 = !{!"omnipotent char", !36, i64 0}
!36 = !{!"Simple C/C++ TBAA"}
!37 = !DILocation(line: 3, column: 5, scope: !31)
!38 = !DILocation(line: 3, column: 10, scope: !31)
!39 = !DILocation(line: 4, column: 17, scope: !31)
!40 = !DILocation(line: 4, column: 14, scope: !31)
!41 = !DILocation(line: 4, column: 5, scope: !31)
!42 = !DILocation(line: 4, column: 12, scope: !31)
!43 = !DILocation(line: 5, column: 17, scope: !31)
!44 = !DILocation(line: 5, column: 14, scope: !31)
!45 = !DILocation(line: 5, column: 5, scope: !31)
!46 = !DILocation(line: 5, column: 12, scope: !31)
!47 = !DILocation(line: 6, column: 17, scope: !31)
!48 = !DILocation(line: 6, column: 14, scope: !31)
!49 = !DILocation(line: 6, column: 5, scope: !31)
!50 = !DILocation(line: 6, column: 12, scope: !31)
!51 = !DILocation(line: 2, column: 26, scope: !28)
|
