1; RUN: llc < %s -mtriple=thumbv7-apple-ios -relocation-model=pic -disable-fp-elim -mcpu=cortex-a8 | FileCheck %s
2; rdar://10676853
3
4%struct.Dict_node_struct = type { i8*, %struct.Word_file_struct*, %struct.Exp_struct*, %struct.Dict_node_struct*, %struct.Dict_node_struct* }
5%struct.Word_file_struct = type { [60 x i8], i32, %struct.Word_file_struct* }
6%struct.Exp_struct = type { i8, i8, i8, i8, %union.anon }
7%union.anon = type { %struct.E_list_struct* }
8%struct.E_list_struct = type { %struct.E_list_struct*, %struct.Exp_struct* }
9
10@lookup_list = external hidden unnamed_addr global %struct.Dict_node_struct*, align 4
11
12declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
13
14define hidden fastcc void @rdictionary_lookup(%struct.Dict_node_struct* %dn, i8* nocapture %s) nounwind ssp {
15; CHECK-LABEL: rdictionary_lookup:
16entry:
17  br label %tailrecurse
18
19tailrecurse:                                      ; preds = %if.then10, %entry
20  %dn.tr = phi %struct.Dict_node_struct* [ %dn, %entry ], [ %9, %if.then10 ]
21  %cmp = icmp eq %struct.Dict_node_struct* %dn.tr, null
22  br i1 %cmp, label %if.end11, label %if.end
23
24if.end:                                           ; preds = %tailrecurse
25  %string = getelementptr inbounds %struct.Dict_node_struct* %dn.tr, i32 0, i32 0
26  %0 = load i8** %string, align 4
27  br label %while.cond.i
28
29while.cond.i:                                     ; preds = %while.body.i, %if.end
30  %1 = phi i8* [ %s, %if.end ], [ %incdec.ptr.i, %while.body.i ]
31  %storemerge.i = phi i8* [ %0, %if.end ], [ %incdec.ptr6.i, %while.body.i ]
32  %2 = load i8* %1, align 1
33  %cmp.i = icmp eq i8 %2, 0
34  %.pre.i = load i8* %storemerge.i, align 1
35  br i1 %cmp.i, label %lor.lhs.false.i, label %land.end.i
36
37land.end.i:                                       ; preds = %while.cond.i
38  %cmp4.i = icmp eq i8 %2, %.pre.i
39  br i1 %cmp4.i, label %while.body.i, label %while.end.i
40
41while.body.i:                                     ; preds = %land.end.i
42  %incdec.ptr.i = getelementptr inbounds i8* %1, i32 1
43  %incdec.ptr6.i = getelementptr inbounds i8* %storemerge.i, i32 1
44  br label %while.cond.i
45
46while.end.i:                                      ; preds = %land.end.i
47  %cmp8.i = icmp eq i8 %2, 42
48  br i1 %cmp8.i, label %if.end3, label %lor.lhs.false.i
49
50lor.lhs.false.i:                                  ; preds = %while.end.i, %while.cond.i
51  %3 = phi i8 [ %2, %while.end.i ], [ 0, %while.cond.i ]
52  %cmp11.i = icmp eq i8 %.pre.i, 42
53  br i1 %cmp11.i, label %if.end3, label %dict_match.exit
54
55dict_match.exit:                                  ; preds = %lor.lhs.false.i
56  %cmp14.i = icmp eq i8 %3, 46
57  %conv16.i = sext i8 %3 to i32
58  %.conv16.i = select i1 %cmp14.i, i32 0, i32 %conv16.i
59  %cmp18.i = icmp eq i8 %.pre.i, 46
60  %conv22.i = sext i8 %.pre.i to i32
61  %cond24.i = select i1 %cmp18.i, i32 0, i32 %conv22.i
62  %sub.i = sub nsw i32 %.conv16.i, %cond24.i
63  %cmp1 = icmp sgt i32 %sub.i, -1
64  br i1 %cmp1, label %if.end3, label %if.then10
65
66if.end3:                                          ; preds = %dict_match.exit, %lor.lhs.false.i, %while.end.i
67; CHECK: %if.end3
68; CHECK: cmp
69; CHECK-NOT: cbnz
70  %storemerge1.i3 = phi i32 [ %sub.i, %dict_match.exit ], [ 0, %lor.lhs.false.i ], [ 0, %while.end.i ]
71  %right = getelementptr inbounds %struct.Dict_node_struct* %dn.tr, i32 0, i32 4
72  %4 = load %struct.Dict_node_struct** %right, align 4
73  tail call fastcc void @rdictionary_lookup(%struct.Dict_node_struct* %4, i8* %s)
74  %cmp4 = icmp eq i32 %storemerge1.i3, 0
75  br i1 %cmp4, label %if.then5, label %if.end8
76
77if.then5:                                         ; preds = %if.end3
78  %call6 = tail call fastcc i8* @xalloc(i32 20)
79  %5 = bitcast i8* %call6 to %struct.Dict_node_struct*
80  %6 = bitcast %struct.Dict_node_struct* %dn.tr to i8*
81  tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %call6, i8* %6, i32 16, i32 4, i1 false)
82  %7 = load %struct.Dict_node_struct** @lookup_list, align 4
83  %right7 = getelementptr inbounds i8* %call6, i32 16
84  %8 = bitcast i8* %right7 to %struct.Dict_node_struct**
85  store %struct.Dict_node_struct* %7, %struct.Dict_node_struct** %8, align 4
86  store %struct.Dict_node_struct* %5, %struct.Dict_node_struct** @lookup_list, align 4
87  br label %if.then10
88
89if.end8:                                          ; preds = %if.end3
90  %cmp9 = icmp slt i32 %storemerge1.i3, 1
91  br i1 %cmp9, label %if.then10, label %if.end11
92
93if.then10:                                        ; preds = %if.end8, %if.then5, %dict_match.exit
94  %left = getelementptr inbounds %struct.Dict_node_struct* %dn.tr, i32 0, i32 3
95  %9 = load %struct.Dict_node_struct** %left, align 4
96  br label %tailrecurse
97
98if.end11:                                         ; preds = %if.end8, %tailrecurse
99  ret void
100}
101
102; Materializable
103declare hidden fastcc i8* @xalloc(i32) nounwind ssp
104