1; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
2
3; CHECK: %tmp9 = shl i64 %tmp8, 33
4; CHECK-NEXT: --> {{.*}} Exits: (-8589934592 + (8589934592 * (zext i32 %arg2 to i64)))
5; CHECK: %tmp10 = ashr exact i64 %tmp9, 32
6; CHECK-NEXT: --> {{.*}} Exits: (sext i32 (-2 + (2 * %arg2)) to i64)
7; CHECK: %tmp11 = getelementptr inbounds i32, i32* %arg, i64 %tmp10
8; CHECK-NEXT: --> {{.*}} Exits: ((4 * (sext i32 (-2 + (2 * %arg2)) to i64))<nsw> + %arg)
9; CHECK:  %tmp14 = or i64 %tmp10, 1
10; CHECK-NEXT: --> {{.*}} Exits: (1 + (sext i32 (-2 + (2 * %arg2)) to i64))<nsw>
11; CHECK: %tmp15 = getelementptr inbounds i32, i32* %arg, i64 %tmp14
12; CHECK-NEXT: --> {{.*}} Exits: (4 + (4 * (sext i32 (-2 + (2 * %arg2)) to i64))<nsw> + %arg)
13; CHECK:Loop %bb7: backedge-taken count is (-1 + (zext i32 %arg2 to i64))<nsw>
14; CHECK-NEXT:Loop %bb7: max backedge-taken count is -1
15; CHECK-NEXT:Loop %bb7: Predicated backedge-taken count is (-1 + (zext i32 %arg2 to i64))<nsw>
16
17define void @foo(i32* nocapture %arg, i32 %arg1, i32 %arg2) {
18bb:
19  %tmp = icmp sgt i32 %arg2, 0
20  br i1 %tmp, label %bb3, label %bb6
21
22bb3:                                              ; preds = %bb
23  %tmp4 = zext i32 %arg2 to i64
24  br label %bb7
25
26bb5:                                              ; preds = %bb7
27  br label %bb6
28
29bb6:                                              ; preds = %bb5, %bb
30  ret void
31
32bb7:                                              ; preds = %bb7, %bb3
33  %tmp8 = phi i64 [ %tmp18, %bb7 ], [ 0, %bb3 ]
34  %tmp9 = shl i64 %tmp8, 33
35  %tmp10 = ashr exact i64 %tmp9, 32
36  %tmp11 = getelementptr inbounds i32, i32* %arg, i64 %tmp10
37  %tmp12 = load i32, i32* %tmp11, align 4
38  %tmp13 = sub nsw i32 %tmp12, %arg1
39  store i32 %tmp13, i32* %tmp11, align 4
40  %tmp14 = or i64 %tmp10, 1
41  %tmp15 = getelementptr inbounds i32, i32* %arg, i64 %tmp14
42  %tmp16 = load i32, i32* %tmp15, align 4
43  %tmp17 = mul nsw i32 %tmp16, %arg1
44  store i32 %tmp17, i32* %tmp15, align 4
45  %tmp18 = add nuw nsw i64 %tmp8, 1
46  %tmp19 = icmp eq i64 %tmp18, %tmp4
47  br i1 %tmp19, label %bb5, label %bb7
48}
49
50; CHECK: %t10 = ashr exact i128 %t9, 1
51; CHECK-NEXT: --> {{.*}} Exits: (sext i127 (-633825300114114700748351602688 + (633825300114114700748351602688 * (zext i32 %arg5 to i127))) to i128)
52; CHECK: %t14 = or i128 %t10, 1
53; CHECK-NEXT: --> {{.*}} Exits: (1 + (sext i127 (-633825300114114700748351602688 + (633825300114114700748351602688 * (zext i32 %arg5 to i127))) to i128))<nsw>
54; CHECK: Loop %bb7: backedge-taken count is (-1 + (zext i32 %arg5 to i128))<nsw>
55; CHECK-NEXT: Loop %bb7: max backedge-taken count is -1
56; CHECK-NEXT: Loop %bb7: Predicated backedge-taken count is (-1 + (zext i32 %arg5 to i128))<nsw>
57
58define void @goo(i32* nocapture %arg3, i32 %arg4, i32 %arg5) {
59bb:
60  %t = icmp sgt i32 %arg5, 0
61  br i1 %t, label %bb3, label %bb6
62
63bb3:                                              ; preds = %bb
64  %t4 = zext i32 %arg5 to i128
65  br label %bb7
66
67bb5:                                              ; preds = %bb7
68  br label %bb6
69
70bb6:                                              ; preds = %bb5, %bb
71  ret void
72
73bb7:                                              ; preds = %bb7, %bb3
74  %t8 = phi i128 [ %t18, %bb7 ], [ 0, %bb3 ]
75  %t9 = shl i128 %t8, 100
76  %t10 = ashr exact i128 %t9, 1
77  %t11 = getelementptr inbounds i32, i32* %arg3, i128 %t10
78  %t12 = load i32, i32* %t11, align 4
79  %t13 = sub nsw i32 %t12, %arg4
80  store i32 %t13, i32* %t11, align 4
81  %t14 = or i128 %t10, 1
82  %t15 = getelementptr inbounds i32, i32* %arg3, i128 %t14
83  %t16 = load i32, i32* %t15, align 4
84  %t17 = mul nsw i32 %t16, %arg4
85  store i32 %t17, i32* %t15, align 4
86  %t18 = add nuw nsw i128 %t8, 1
87  %t19 = icmp eq i128 %t18, %t4
88  br i1 %t19, label %bb5, label %bb7
89}
90