1 ; RUN: opt -S -loop-rotate -verify-memoryssa < %s | FileCheck %s
3 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
4 declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
6 define i32 @tak(i32 %x, i32 %y, i32 %z) nounwind ssp !dbg !0 {
7 ; CHECK-LABEL: define i32 @tak(
9 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %x
10 ; CHECK: tail call void @llvm.dbg.value(metadata i32 %call
15 tailrecurse: ; preds = %if.then, %entry
16 %x.tr = phi i32 [ %x, %entry ], [ %call, %if.then ]
17 %y.tr = phi i32 [ %y, %entry ], [ %call9, %if.then ]
18 %z.tr = phi i32 [ %z, %entry ], [ %call14, %if.then ]
19 tail call void @llvm.dbg.value(metadata i32 %x.tr, metadata !6, metadata !DIExpression()), !dbg !7
20 tail call void @llvm.dbg.value(metadata i32 %y.tr, metadata !8, metadata !DIExpression()), !dbg !9
21 tail call void @llvm.dbg.value(metadata i32 %z.tr, metadata !10, metadata !DIExpression()), !dbg !11
22 %cmp = icmp slt i32 %y.tr, %x.tr, !dbg !12
23 br i1 %cmp, label %if.then, label %if.end, !dbg !12
25 if.then: ; preds = %tailrecurse
26 %sub = sub nsw i32 %x.tr, 1, !dbg !14
27 %call = tail call i32 @tak(i32 %sub, i32 %y.tr, i32 %z.tr), !dbg !14
28 %sub6 = sub nsw i32 %y.tr, 1, !dbg !14
29 %call9 = tail call i32 @tak(i32 %sub6, i32 %z.tr, i32 %x.tr), !dbg !14
30 %sub11 = sub nsw i32 %z.tr, 1, !dbg !14
31 %call14 = tail call i32 @tak(i32 %sub11, i32 %x.tr, i32 %y.tr), !dbg !14
34 if.end: ; preds = %tailrecurse
35 br label %return, !dbg !16
37 return: ; preds = %if.end
38 ret i32 %z.tr, !dbg !17
41 define i32 @tak2(i32 %x, i32 %y, i32 %z) nounwind ssp !dbg !21 {
42 ; CHECK-LABEL: define i32 @tak2(
44 ; CHECK: tail call void @llvm.dbg.value(metadata i32 %x.tr
45 ; CHECK: tail call void @llvm.dbg.value(metadata i32 undef
50 tailrecurse: ; preds = %if.then, %entry
51 %x.tr = phi i32 [ %x, %entry ], [ %call, %if.then ]
52 %y.tr = phi i32 [ %y, %entry ], [ %call9, %if.then ]
53 %z.tr = phi i32 [ %z, %entry ], [ %call14, %if.then ]
54 %cmp = icmp slt i32 %y.tr, %x.tr, !dbg !22
55 br i1 %cmp, label %if.then, label %if.end, !dbg !22
57 if.then: ; preds = %tailrecurse
58 tail call void @llvm.dbg.value(metadata i32 %x.tr, metadata !36, metadata !DIExpression()), !dbg !37
59 tail call void @llvm.dbg.value(metadata i32 %y.tr, metadata !38, metadata !DIExpression()), !dbg !39
60 tail call void @llvm.dbg.value(metadata i32 %z.tr, metadata !40, metadata !DIExpression()), !dbg !41
61 %sub = sub nsw i32 %x.tr, 1, !dbg !24
62 %call = tail call i32 @tak(i32 %sub, i32 %y.tr, i32 %z.tr), !dbg !24
63 %sub6 = sub nsw i32 %y.tr, 1, !dbg !24
64 %call9 = tail call i32 @tak(i32 %sub6, i32 %z.tr, i32 %x.tr), !dbg !24
65 %sub11 = sub nsw i32 %z.tr, 1, !dbg !24
66 %call14 = tail call i32 @tak(i32 %sub11, i32 %x.tr, i32 %y.tr), !dbg !24
69 if.end: ; preds = %tailrecurse
70 tail call void @llvm.dbg.value(metadata i32 %x.tr, metadata !36, metadata !DIExpression()), !dbg !37
71 tail call void @llvm.dbg.value(metadata i32 %y.tr, metadata !38, metadata !DIExpression()), !dbg !39
72 tail call void @llvm.dbg.value(metadata i32 %z.tr, metadata !40, metadata !DIExpression()), !dbg !41
73 br label %return, !dbg !26
75 return: ; preds = %if.end
76 ret i32 %z.tr, !dbg !27
79 @channelColumns = external global i64
80 @horzPlane = external global i8*, align 8
82 define void @FindFreeHorzSeg(i64 %startCol, i64 %row, i64* %rowStart) {
83 ; Ensure that the loop increment basic block is rotated into the tail of the
84 ; body, even though it contains a debug intrinsic call.
85 ; CHECK-LABEL: define void @FindFreeHorzSeg(
87 ; CHECK-NEXT: tail call void @llvm.dbg.value
90 ; CHECK: phi i64 [ %{{[^,]*}}, %{{[^,]*}} ]
91 ; CHECK-NEXT: br label %for.end
98 %i.0 = phi i64 [ %startCol, %entry ], [ %dec, %for.inc ]
99 %cmp = icmp eq i64 %i.0, 0
100 br i1 %cmp, label %for.end, label %for.body
103 %0 = load i64, i64* @channelColumns, align 8
104 %mul = mul i64 %0, %row
105 %add = add i64 %mul, %i.0
106 %1 = load i8*, i8** @horzPlane, align 8
107 %arrayidx = getelementptr inbounds i8, i8* %1, i64 %add
108 %2 = load i8, i8* %arrayidx, align 1
109 %tobool = icmp eq i8 %2, 0
110 br i1 %tobool, label %for.inc, label %for.end
113 %dec = add i64 %i.0, -1
114 tail call void @llvm.dbg.value(metadata i64 %dec, metadata !DILocalVariable(scope: !0), metadata !DIExpression()), !dbg !DILocation(scope: !0)
118 %add1 = add i64 %i.0, 1
119 store i64 %add1, i64* %rowStart, align 8
123 !llvm.module.flags = !{!20}
126 !0 = distinct !DISubprogram(name: "tak", line: 32, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !18, scope: !1, type: !3)
127 !1 = !DIFile(filename: "/Volumes/Lalgate/cj/llvm/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame/recursive.c", directory: "/Volumes/Lalgate/cj/D/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame")
128 !2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 125492)", isOptimized: true, emissionKind: FullDebug, file: !18)
129 !3 = !DISubroutineType(types: !4)
131 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
132 !6 = !DILocalVariable(name: "x", line: 32, arg: 1, scope: !0, file: !1, type: !5)
133 !7 = !DILocation(line: 32, column: 13, scope: !0)
134 !8 = !DILocalVariable(name: "y", line: 32, arg: 2, scope: !0, file: !1, type: !5)
135 !9 = !DILocation(line: 32, column: 20, scope: !0)
136 !10 = !DILocalVariable(name: "z", line: 32, arg: 3, scope: !0, file: !1, type: !5)
137 !11 = !DILocation(line: 32, column: 27, scope: !0)
138 !12 = !DILocation(line: 33, column: 3, scope: !13)
139 !13 = distinct !DILexicalBlock(line: 32, column: 30, file: !18, scope: !0)
140 !14 = !DILocation(line: 34, column: 5, scope: !15)
141 !15 = distinct !DILexicalBlock(line: 33, column: 14, file: !18, scope: !13)
142 !16 = !DILocation(line: 36, column: 3, scope: !13)
143 !17 = !DILocation(line: 37, column: 1, scope: !13)
144 !18 = !DIFile(filename: "/Volumes/Lalgate/cj/llvm/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame/recursive.c", directory: "/Volumes/Lalgate/cj/D/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame")
145 !20 = !{i32 1, !"Debug Info Version", i32 3}
146 !21 = distinct !DISubprogram(name: "tak", line: 32, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !2, file: !18, scope: !1, type: !3)
147 !22 = !DILocation(line: 33, column: 3, scope: !23)
148 !23 = distinct !DILexicalBlock(line: 32, column: 30, file: !18, scope: !21)
149 !24 = !DILocation(line: 34, column: 5, scope: !25)
150 !25 = distinct !DILexicalBlock(line: 33, column: 14, file: !18, scope: !23)
151 !26 = !DILocation(line: 36, column: 3, scope: !23)
152 !27 = !DILocation(line: 37, column: 1, scope: !23)
153 !36 = !DILocalVariable(name: "x", line: 32, arg: 1, scope: !21, file: !1, type: !5)
154 !37 = !DILocation(line: 32, column: 13, scope: !21)
155 !38 = !DILocalVariable(name: "y", line: 32, arg: 2, scope: !21, file: !1, type: !5)
156 !39 = !DILocation(line: 32, column: 20, scope: !21)
157 !40 = !DILocalVariable(name: "z", line: 32, arg: 3, scope: !21, file: !1, type: !5)
158 !41 = !DILocation(line: 32, column: 27, scope: !21)