1; RUN: opt -S -loop-rotate < %s | FileCheck %s 2 3declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 4declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 5 6define i32 @tak(i32 %x, i32 %y, i32 %z) nounwind ssp { 7; CHECK-LABEL: define i32 @tak( 8; CHECK: entry 9; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %x 10 11entry: 12 br label %tailrecurse 13 14tailrecurse: ; 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 !{}), !dbg !7 19 tail call void @llvm.dbg.value(metadata i32 %y.tr, i64 0, metadata !8, metadata !{}), !dbg !9 20 tail call void @llvm.dbg.value(metadata i32 %z.tr, i64 0, metadata !10, metadata !{}), !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 24if.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 33if.end: ; preds = %tailrecurse 34 br label %return, !dbg !16 35 36return: ; 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 43define 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 55entry: 56 br label %for.cond 57 58for.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 63for.body: 64 %0 = load i64* @channelColumns, align 8 65 %mul = mul i64 %0, %row 66 %add = add i64 %mul, %i.0 67 %1 = load i8** @horzPlane, align 8 68 %arrayidx = getelementptr inbounds i8* %1, i64 %add 69 %2 = load i8* %arrayidx, align 1 70 %tobool = icmp eq i8 %2, 0 71 br i1 %tobool, label %for.inc, label %for.end 72 73for.inc: 74 %dec = add i64 %i.0, -1 75 tail call void @llvm.dbg.value(metadata i64 %dec, i64 0, metadata !{!"undef"}, metadata !{}) 76 br label %for.cond 77 78for.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 = !{!"0x2e\00tak\00tak\00\0032\000\001\000\006\00256\000\000", !18, !1, !3, null, i32 (i32, i32, i32)* @tak, null, null, null} ; [ DW_TAG_subprogram ] [line 32] [def] [scope 0] [tak] 88!1 = !{!"0x29", !18} ; [ DW_TAG_file_type ] 89!2 = !{!"0x11\0012\00clang version 2.9 (trunk 125492)\001\00\000\00\000", !18, !19, !19, null, null, null} ; [ DW_TAG_compile_unit ] 90!3 = !{!"0x15\00\000\000\000\000\000\000", !18, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 91!4 = !{!5} 92!5 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !2} ; [ DW_TAG_base_type ] 93!6 = !{!"0x101\00x\0032\000", !0, !1, !5} ; [ DW_TAG_arg_variable ] 94!7 = !MDLocation(line: 32, column: 13, scope: !0) 95!8 = !{!"0x101\00y\0032\000", !0, !1, !5} ; [ DW_TAG_arg_variable ] 96!9 = !MDLocation(line: 32, column: 20, scope: !0) 97!10 = !{!"0x101\00z\0032\000", !0, !1, !5} ; [ DW_TAG_arg_variable ] 98!11 = !MDLocation(line: 32, column: 27, scope: !0) 99!12 = !MDLocation(line: 33, column: 3, scope: !13) 100!13 = !{!"0xb\0032\0030\006", !18, !0} ; [ DW_TAG_lexical_block ] 101!14 = !MDLocation(line: 34, column: 5, scope: !15) 102!15 = !{!"0xb\0033\0014\007", !18, !13} ; [ DW_TAG_lexical_block ] 103!16 = !MDLocation(line: 36, column: 3, scope: !13) 104!17 = !MDLocation(line: 37, column: 1, scope: !13) 105!18 = !{!"/Volumes/Lalgate/cj/llvm/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame/recursive.c", !"/Volumes/Lalgate/cj/D/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame"} 106!19 = !{i32 0} 107!20 = !{i32 1, !"Debug Info Version", i32 2} 108