1 ; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4
2 ; RUN: opt -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 < %s 2>&1 | FileCheck %s
4 define void @f(i32 %n, ptr %ptr) {
7 ; CHECK-NEXT: Determining loop execution counts for: @f
8 ; CHECK-NEXT: Loop %loop: <multiple exits> Unpredictable backedge-taken count.
9 ; CHECK-NEXT: exit count for loop: i32 0
10 ; CHECK-NEXT: exit count for be: ***COULDNOTCOMPUTE***
11 ; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 0
12 ; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is i32 0
13 ; CHECK-NEXT: symbolic max exit count for loop: i32 0
14 ; CHECK-NEXT: symbolic max exit count for be: ***COULDNOTCOMPUTE***
20 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %be ]
21 %iv.inc = add i32 %iv, 1
22 %unswitch_cond_root = icmp ne i32 %iv.inc, 42
23 %us.0 = and i1 %unswitch_cond_root, %unswitch_cond_root
24 %us.1 = and i1 %us.0, %us.0
25 %us.2 = and i1 %us.1, %us.1
26 %us.3 = and i1 %us.2, %us.2
27 %us.4 = and i1 %us.3, %us.3
28 %us.5 = and i1 %us.4, %us.4
29 %us.6 = and i1 %us.5, %us.5
30 %us.7 = and i1 %us.6, %us.6
31 %us.8 = and i1 %us.7, %us.7
32 %us.9 = and i1 %us.8, %us.8
33 %us.10 = and i1 %us.9, %us.9
34 %us.11 = and i1 %us.10, %us.10
35 %us.12 = and i1 %us.11, %us.11
36 %us.13 = and i1 %us.12, %us.12
37 %us.14 = and i1 %us.13, %us.13
38 %us.15 = and i1 %us.14, %us.14
39 %us.16 = and i1 %us.15, %us.15
40 %us.17 = and i1 %us.16, %us.16
41 %us.18 = and i1 %us.17, %us.17
42 %us.19 = and i1 %us.18, %us.18
43 %us.20 = and i1 %us.19, %us.19
44 %us.21 = and i1 %us.20, %us.20
45 %us.22 = and i1 %us.21, %us.21
46 %us.23 = and i1 %us.22, %us.22
47 %us.24 = and i1 %us.23, %us.23
48 %us.25 = and i1 %us.24, %us.24
49 %us.26 = and i1 %us.25, %us.25
50 %us.27 = and i1 %us.26, %us.26
51 %us.28 = and i1 %us.27, %us.27
52 %us.29 = and i1 %us.28, %us.28
53 br i1 %us.29, label %leave, label %be
56 store volatile i32 0, ptr %ptr
57 %becond = icmp ult i32 %iv.inc, %n
58 br i1 %becond, label %leave, label %loop