1 ;RUN: opt < %s -loop-reroll -S | FileCheck %s
2 ;void foo(float * restrict a, float * restrict b, int n) {
3 ; for(int i = 0; i < n; i+=4) {
10 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
11 target triple = "armv4t--linux-gnueabi"
13 ; Function Attrs: nounwind
14 define void @foo(float* noalias nocapture %a, float* noalias nocapture readonly %b, i32 %n) #0 !dbg !4 {
18 tail call void @llvm.dbg.value(metadata float* %a, metadata !12, metadata !22), !dbg !23
19 tail call void @llvm.dbg.value(metadata float* %b, metadata !13, metadata !22), !dbg !24
20 tail call void @llvm.dbg.value(metadata i32 %n, metadata !14, metadata !22), !dbg !25
21 tail call void @llvm.dbg.value(metadata i32 0, metadata !15, metadata !22), !dbg !26
22 %cmp.30 = icmp sgt i32 %n, 0, !dbg !27
23 br i1 %cmp.30, label %for.body.preheader, label %for.cond.cleanup, !dbg !29
25 for.body.preheader: ; preds = %entry
26 br label %for.body, !dbg !30
28 for.cond.cleanup.loopexit: ; preds = %for.body
29 br label %for.cond.cleanup, !dbg !32
31 for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
34 for.body: ; preds = %for.body.preheader, %for.body
36 ;CHECK: %indvar = phi i32 [ %indvar.next, %for.body ], [ 0, {{.*}} ]
41 ;CHECK: call void @llvm.dbg.value
42 ;CHECK: %indvar.next = add i32 %indvar, 1
43 ;CHECK: icmp eq i32 %indvar
44 %i.031 = phi i32 [ %add13, %for.body ], [ 0, %for.body.preheader ]
45 %arrayidx = getelementptr inbounds float, float* %b, i32 %i.031, !dbg !30
46 %0 = bitcast float* %arrayidx to i32*, !dbg !30
47 %1 = load i32, i32* %0, align 4, !dbg !30, !tbaa !33
48 %arrayidx1 = getelementptr inbounds float, float* %a, i32 %i.031, !dbg !37
49 %2 = bitcast float* %arrayidx1 to i32*, !dbg !38
50 store i32 %1, i32* %2, align 4, !dbg !38, !tbaa !33
51 %add = or i32 %i.031, 1, !dbg !39
52 %arrayidx2 = getelementptr inbounds float, float* %b, i32 %add, !dbg !40
53 %3 = bitcast float* %arrayidx2 to i32*, !dbg !40
54 %4 = load i32, i32* %3, align 4, !dbg !40, !tbaa !33
55 %arrayidx4 = getelementptr inbounds float, float* %a, i32 %add, !dbg !41
56 %5 = bitcast float* %arrayidx4 to i32*, !dbg !42
57 store i32 %4, i32* %5, align 4, !dbg !42, !tbaa !33
58 %add5 = or i32 %i.031, 2, !dbg !43
59 %arrayidx6 = getelementptr inbounds float, float* %b, i32 %add5, !dbg !44
60 %6 = bitcast float* %arrayidx6 to i32*, !dbg !44
61 %7 = load i32, i32* %6, align 4, !dbg !44, !tbaa !33
62 %arrayidx8 = getelementptr inbounds float, float* %a, i32 %add5, !dbg !45
63 %8 = bitcast float* %arrayidx8 to i32*, !dbg !46
64 store i32 %7, i32* %8, align 4, !dbg !46, !tbaa !33
65 %add9 = or i32 %i.031, 3, !dbg !47
66 %arrayidx10 = getelementptr inbounds float, float* %b, i32 %add9, !dbg !48
67 %9 = bitcast float* %arrayidx10 to i32*, !dbg !48
68 %10 = load i32, i32* %9, align 4, !dbg !48, !tbaa !33
69 %arrayidx12 = getelementptr inbounds float, float* %a, i32 %add9, !dbg !49
70 %11 = bitcast float* %arrayidx12 to i32*, !dbg !50
71 store i32 %10, i32* %11, align 4, !dbg !50, !tbaa !33
72 %add13 = add nuw nsw i32 %i.031, 4, !dbg !51
73 tail call void @llvm.dbg.value(metadata i32 %add13, metadata !15, metadata !22), !dbg !26
74 %cmp = icmp slt i32 %add13, %n, !dbg !27
75 br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !dbg !29
78 ; Function Attrs: nounwind readnone
79 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
81 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" }
82 attributes #1 = { nounwind readnone }
85 !llvm.module.flags = !{!17, !18, !19, !20}
88 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
89 !1 = !DIFile(filename: "test.c", directory: "/home/weimingz/llvm-build/release/community-tip")
91 !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)
92 !5 = !DISubroutineType(types: !6)
93 !6 = !{null, !7, !7, !10}
94 !7 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !8)
95 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32, align: 32)
96 !9 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
97 !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
98 !11 = !{!12, !13, !14, !15}
99 !12 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 1, type: !7)
100 !13 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 1, type: !7)
101 !14 = !DILocalVariable(name: "n", arg: 3, scope: !4, file: !1, line: 1, type: !10)
102 !15 = !DILocalVariable(name: "i", scope: !16, file: !1, line: 2, type: !10)
103 !16 = distinct !DILexicalBlock(scope: !4, file: !1, line: 2, column: 3)
104 !17 = !{i32 2, !"Dwarf Version", i32 4}
105 !18 = !{i32 2, !"Debug Info Version", i32 3}
106 !19 = !{i32 1, !"wchar_size", i32 4}
107 !20 = !{i32 1, !"min_enum_size", i32 4}
108 !21 = !{!"clang version 3.8.0"}
109 !22 = !DIExpression()
110 !23 = !DILocation(line: 1, column: 27, scope: !4)
111 !24 = !DILocation(line: 1, column: 47, scope: !4)
112 !25 = !DILocation(line: 1, column: 54, scope: !4)
113 !26 = !DILocation(line: 2, column: 11, scope: !16)
114 !27 = !DILocation(line: 2, column: 20, scope: !28)
115 !28 = distinct !DILexicalBlock(scope: !16, file: !1, line: 2, column: 3)
116 !29 = !DILocation(line: 2, column: 3, scope: !16)
117 !30 = !DILocation(line: 3, column: 12, scope: !31)
118 !31 = distinct !DILexicalBlock(scope: !28, file: !1, line: 2, column: 31)
119 !32 = !DILocation(line: 8, column: 1, scope: !4)
120 !33 = !{!34, !34, i64 0}
121 !34 = !{!"float", !35, i64 0}
122 !35 = !{!"omnipotent char", !36, i64 0}
123 !36 = !{!"Simple C/C++ TBAA"}
124 !37 = !DILocation(line: 3, column: 5, scope: !31)
125 !38 = !DILocation(line: 3, column: 10, scope: !31)
126 !39 = !DILocation(line: 4, column: 17, scope: !31)
127 !40 = !DILocation(line: 4, column: 14, scope: !31)
128 !41 = !DILocation(line: 4, column: 5, scope: !31)
129 !42 = !DILocation(line: 4, column: 12, scope: !31)
130 !43 = !DILocation(line: 5, column: 17, scope: !31)
131 !44 = !DILocation(line: 5, column: 14, scope: !31)
132 !45 = !DILocation(line: 5, column: 5, scope: !31)
133 !46 = !DILocation(line: 5, column: 12, scope: !31)
134 !47 = !DILocation(line: 6, column: 17, scope: !31)
135 !48 = !DILocation(line: 6, column: 14, scope: !31)
136 !49 = !DILocation(line: 6, column: 5, scope: !31)
137 !50 = !DILocation(line: 6, column: 12, scope: !31)
138 !51 = !DILocation(line: 2, column: 26, scope: !28)