1 ; RUN: opt -S -loop-rotate < %s | FileCheck %s 2 3 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 4 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 5 6 define i32 @tak(i32 %x, i32 %y, i32 %z) nounwind ssp !dbg !0 { 7 ; CHECK-LABEL: define i32 @tak( 8 ; CHECK: entry 9 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %x 10 11 entry: 12 br label %tailrecurse 13 14 tailrecurse: ; preds = %if.then, %entry 15 %x.tr = phi i32 [ %x, %entry ], [ %call, %if.then ] 16 %y.tr = phi i32 [ %y, %entry ], [ %call9, %if.then ] 17 %z.tr = phi i32 [ %z, %entry ], [ %call14, %if.then ] 18 tail call void @llvm.dbg.value(metadata i32 %x.tr, i64 0, metadata !6, metadata !DIExpression()), !dbg !7 19 tail call void @llvm.dbg.value(metadata i32 %y.tr, i64 0, metadata !8, metadata !DIExpression()), !dbg !9 20 tail call void @llvm.dbg.value(metadata i32 %z.tr, i64 0, metadata !10, metadata !DIExpression()), !dbg !11 21 %cmp = icmp slt i32 %y.tr, %x.tr, !dbg !12 22 br i1 %cmp, label %if.then, label %if.end, !dbg !12 23 24 if.then: ; preds = %tailrecurse 25 %sub = sub nsw i32 %x.tr, 1, !dbg !14 26 %call = tail call i32 @tak(i32 %sub, i32 %y.tr, i32 %z.tr), !dbg !14 27 %sub6 = sub nsw i32 %y.tr, 1, !dbg !14 28 %call9 = tail call i32 @tak(i32 %sub6, i32 %z.tr, i32 %x.tr), !dbg !14 29 %sub11 = sub nsw i32 %z.tr, 1, !dbg !14 30 %call14 = tail call i32 @tak(i32 %sub11, i32 %x.tr, i32 %y.tr), !dbg !14 31 br label %tailrecurse 32 33 if.end: ; preds = %tailrecurse 34 br label %return, !dbg !16 35 36 return: ; preds = %if.end 37 ret i32 %z.tr, !dbg !17 38 } 39 40 @channelColumns = external global i64 41 @horzPlane = external global i8*, align 8 42 43 define void @FindFreeHorzSeg(i64 %startCol, i64 %row, i64* %rowStart) { 44 ; Ensure that the loop increment basic block is rotated into the tail of the 45 ; body, even though it contains a debug intrinsic call. 46 ; CHECK-LABEL: define void @FindFreeHorzSeg( 47 ; CHECK: %dec = add 48 ; CHECK-NEXT: tail call void @llvm.dbg.value 49 ; CHECK: %cmp = icmp 50 ; CHECK: br i1 %cmp 51 ; CHECK: phi i64 [ %{{[^,]*}}, %{{[^,]*}} ] 52 ; CHECK-NEXT: br label %for.end 53 54 55 entry: 56 br label %for.cond 57 58 for.cond: 59 %i.0 = phi i64 [ %startCol, %entry ], [ %dec, %for.inc ] 60 %cmp = icmp eq i64 %i.0, 0 61 br i1 %cmp, label %for.end, label %for.body 62 63 for.body: 64 %0 = load i64, i64* @channelColumns, align 8 65 %mul = mul i64 %0, %row 66 %add = add i64 %mul, %i.0 67 %1 = load i8*, i8** @horzPlane, align 8 68 %arrayidx = getelementptr inbounds i8, i8* %1, i64 %add 69 %2 = load i8, i8* %arrayidx, align 1 70 %tobool = icmp eq i8 %2, 0 71 br i1 %tobool, label %for.inc, label %for.end 72 73 for.inc: 74 %dec = add i64 %i.0, -1 75 tail call void @llvm.dbg.value(metadata i64 %dec, i64 0, metadata !DILocalVariable(scope: !0), metadata !DIExpression()), !dbg !DILocation(scope: !0) 76 br label %for.cond 77 78 for.end: 79 %add1 = add i64 %i.0, 1 80 store i64 %add1, i64* %rowStart, align 8 81 ret void 82 } 83 84 !llvm.module.flags = !{!20} 85 !llvm.dbg.sp = !{!0} 86 87 !0 = distinct !DISubprogram(name: "tak", line: 32, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !18, scope: !1, type: !3) 88 !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") 89 !2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 125492)", isOptimized: true, emissionKind: 0, file: !18, enums: !19, retainedTypes: !19) 90 !3 = !DISubroutineType(types: !4) 91 !4 = !{!5} 92 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 93 !6 = !DILocalVariable(name: "x", line: 32, arg: 1, scope: !0, file: !1, type: !5) 94 !7 = !DILocation(line: 32, column: 13, scope: !0) 95 !8 = !DILocalVariable(name: "y", line: 32, arg: 2, scope: !0, file: !1, type: !5) 96 !9 = !DILocation(line: 32, column: 20, scope: !0) 97 !10 = !DILocalVariable(name: "z", line: 32, arg: 3, scope: !0, file: !1, type: !5) 98 !11 = !DILocation(line: 32, column: 27, scope: !0) 99 !12 = !DILocation(line: 33, column: 3, scope: !13) 100 !13 = distinct !DILexicalBlock(line: 32, column: 30, file: !18, scope: !0) 101 !14 = !DILocation(line: 34, column: 5, scope: !15) 102 !15 = distinct !DILexicalBlock(line: 33, column: 14, file: !18, scope: !13) 103 !16 = !DILocation(line: 36, column: 3, scope: !13) 104 !17 = !DILocation(line: 37, column: 1, scope: !13) 105 !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") 106 !19 = !{i32 0} 107 !20 = !{i32 1, !"Debug Info Version", i32 3} 108
