1 ; RUN: opt -S -loop-rotate < %s | FileCheck %s
3 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
4 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
6 define i32 @tak(i32 %x, i32 %y, i32 %z) nounwind ssp {
7 ; CHECK-LABEL: define i32 @tak(
9 ; CHECK-NEXT: call void @llvm.dbg.value(metadata !{i32 %x}
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 !{}), !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
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
33 if.end: ; preds = %tailrecurse
34 br label %return, !dbg !16
36 return: ; preds = %if.end
37 ret i32 %z.tr, !dbg !17
40 @channelColumns = external global i64
41 @horzPlane = external global i8*, align 8
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(
48 ; CHECK-NEXT: tail call void @llvm.dbg.value
49 ; CHECK-NEXT: br i1 %tobool, label %for.cond, label %[[LOOP_EXIT:[^,]*]]
50 ; CHECK: [[LOOP_EXIT]]:
51 ; CHECK-NEXT: phi i64 [ %{{[^,]*}}, %{{[^,]*}} ]
52 ; CHECK-NEXT: br label %for.end
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
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
74 %dec = add i64 %i.0, -1
75 tail call void @llvm.dbg.value(metadata !{i64 %dec}, i64 0, metadata !{metadata !"undef"}, metadata !{})
79 %add1 = add i64 %i.0, 1
80 store i64 %add1, i64* %rowStart, align 8
84 !llvm.module.flags = !{!20}
87 !0 = metadata !{metadata !"0x2e\00tak\00tak\00\0032\000\001\000\006\00256\000\000", metadata !18, metadata !1, metadata !3, null, i32 (i32, i32, i32)* @tak, null, null, null} ; [ DW_TAG_subprogram ] [line 32] [def] [scope 0] [tak]
88 !1 = metadata !{metadata !"0x29", metadata !18} ; [ DW_TAG_file_type ]
89 !2 = metadata !{metadata !"0x11\0012\00clang version 2.9 (trunk 125492)\001\00\000\00\000", metadata !18, metadata !19, metadata !19, null, null, null} ; [ DW_TAG_compile_unit ]
90 !3 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !18, metadata !1, null, metadata !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
91 !4 = metadata !{metadata !5}
92 !5 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, metadata !2} ; [ DW_TAG_base_type ]
93 !6 = metadata !{metadata !"0x101\00x\0032\000", metadata !0, metadata !1, metadata !5} ; [ DW_TAG_arg_variable ]
94 !7 = metadata !{i32 32, i32 13, metadata !0, null}
95 !8 = metadata !{metadata !"0x101\00y\0032\000", metadata !0, metadata !1, metadata !5} ; [ DW_TAG_arg_variable ]
96 !9 = metadata !{i32 32, i32 20, metadata !0, null}
97 !10 = metadata !{metadata !"0x101\00z\0032\000", metadata !0, metadata !1, metadata !5} ; [ DW_TAG_arg_variable ]
98 !11 = metadata !{i32 32, i32 27, metadata !0, null}
99 !12 = metadata !{i32 33, i32 3, metadata !13, null}
100 !13 = metadata !{metadata !"0xb\0032\0030\006", metadata !18, metadata !0} ; [ DW_TAG_lexical_block ]
101 !14 = metadata !{i32 34, i32 5, metadata !15, null}
102 !15 = metadata !{metadata !"0xb\0033\0014\007", metadata !18, metadata !13} ; [ DW_TAG_lexical_block ]
103 !16 = metadata !{i32 36, i32 3, metadata !13, null}
104 !17 = metadata !{i32 37, i32 1, metadata !13, null}
105 !18 = metadata !{metadata !"/Volumes/Lalgate/cj/llvm/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame/recursive.c", metadata !"/Volumes/Lalgate/cj/D/projects/llvm-test/SingleSource/Benchmarks/BenchmarkGame"}
106 !19 = metadata !{i32 0}
107 !20 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}