1; REQUIRES: asserts
2; RUN: opt -mcpu=z13 -S -loop-simplifycfg -enable-mssa-loop-dependency -enable-loop-simplifycfg-term-folding -verify-memoryssa 2>&1 < %s | FileCheck %s
3target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
4
5@global = external dso_local local_unnamed_addr global i8, align 2
6@global.1 = external dso_local local_unnamed_addr global i32, align 4
7@global.2 = external dso_local local_unnamed_addr global i32, align 4
8@global.3 = external dso_local local_unnamed_addr global i16, align 2
9@global.4 = external dso_local local_unnamed_addr global i32, align 4
10
11; CHECK-LABEL: @test_01(
12
13define internal fastcc void @test_01() unnamed_addr {
14bb:
15  %tmp = load i32, i32* @global.2, align 4
16  %tmp1 = icmp eq i32 %tmp, 0
17  br i1 %tmp1, label %bb3, label %bb2
18
19bb2:                                              ; preds = %bb
20  br label %bb7
21
22bb3:                                              ; preds = %bb
23  br label %bb4
24
25bb4:                                              ; preds = %bb6, %bb3
26  br i1 true, label %bb5, label %bb6
27
28bb5:                                              ; preds = %bb4
29  store i16 0, i16* @global.3, align 2
30  br label %bb6
31
32bb6:                                              ; preds = %bb5, %bb4
33  br label %bb4
34
35bb7:                                              ; preds = %bb7, %bb2
36  %tmp8 = phi i32 [ 1, %bb7 ], [ 0, %bb2 ]
37  %tmp9 = icmp eq i32 %tmp8, 0
38  br i1 %tmp9, label %bb7, label %bb10
39
40bb10:                                             ; preds = %bb7
41  br label %bb11
42
43bb11:                                             ; preds = %bb13, %bb10
44  %tmp12 = icmp ult i32 %tmp, 6
45  br i1 %tmp12, label %bb13, label %bb14
46
47bb13:                                             ; preds = %bb11
48  store i32 0, i32* @global.1, align 4
49  br label %bb11
50
51bb14:                                             ; preds = %bb11
52  ret void
53}
54
55@global.5 = external dso_local local_unnamed_addr global i16, align 2
56
57declare dso_local void @spam() local_unnamed_addr
58
59declare dso_local void @blam() local_unnamed_addr
60
61declare dso_local i64 @quux.1() local_unnamed_addr
62
63declare dso_local void @bar() local_unnamed_addr
64
65; CHECK-LABEL: @test_02(
66
67define dso_local void @test_02(i8 signext %arg) local_unnamed_addr {
68bb:
69  br label %bb1
70
71bb1:                                              ; preds = %bb16, %bb
72  %tmp = phi i8 [ %arg, %bb ], [ %tmp17, %bb16 ]
73  %tmp2 = load i16, i16* @global.5, align 2
74  %tmp3 = icmp ugt i16 %tmp2, 56
75  br i1 %tmp3, label %bb4, label %bb18
76
77bb4:                                              ; preds = %bb1
78  %tmp5 = tail call i64 @quux.1()
79  %tmp6 = icmp eq i64 %tmp5, 0
80  br i1 %tmp6, label %bb13, label %bb7
81
82bb7:                                              ; preds = %bb4
83  br label %bb8
84
85bb8:                                              ; preds = %bb8, %bb7
86  %tmp9 = phi i32 [ 26, %bb7 ], [ %tmp10, %bb8 ]
87  tail call void @bar()
88  %tmp10 = add nsw i32 %tmp9, -1
89  %tmp11 = icmp eq i32 %tmp10, 12
90  br i1 %tmp11, label %bb12, label %bb8
91
92bb12:                                             ; preds = %bb8
93  br i1 false, label %bb14, label %bb16
94
95bb13:                                             ; preds = %bb4
96  tail call void @spam()
97  br label %bb14
98
99bb14:                                             ; preds = %bb13, %bb12
100  %tmp15 = phi i8 [ -23, %bb12 ], [ %tmp, %bb13 ]
101  tail call void @blam()
102  br label %bb16
103
104bb16:                                             ; preds = %bb14, %bb12
105  %tmp17 = phi i8 [ %tmp15, %bb14 ], [ -23, %bb12 ]
106  br label %bb1
107
108bb18:                                             ; preds = %bb1
109  ret void
110}
111