1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
2; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution -scalar-evolution-classify-expressions=0 | FileCheck %s
3; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
4
5@mode_table = global [4 x i32] zeroinitializer          ; <[4 x i32]*> [#uses=1]
6
7define i8 @f() {
8; CHECK-LABEL: 'f'
9; CHECK-NEXT:  Determining loop execution counts for: @f
10; CHECK-NEXT:  Loop %bb: <multiple exits> Unpredictable backedge-taken count.
11; CHECK-NEXT:    exit count for bb: ***COULDNOTCOMPUTE***
12; CHECK-NEXT:    exit count for bb2: 1
13; CHECK-NEXT:  Loop %bb: max backedge-taken count is 1
14; CHECK-NEXT:  Loop %bb: Unpredictable predicated backedge-taken count.
15;
16entry:
17  tail call i32 @fegetround( )          ; <i32>:0 [#uses=1]
18  br label %bb
19
20bb:             ; preds = %bb4, %entry
21  %mode.0 = phi i8 [ 0, %entry ], [ %indvar.next, %bb4 ]                ; <i8> [#uses=4]
22  zext i8 %mode.0 to i32                ; <i32>:1 [#uses=1]
23  getelementptr [4 x i32], [4 x i32]* @mode_table, i32 0, i32 %1           ; <i32*>:2 [#uses=1]
24  load i32, i32* %2, align 4         ; <i32>:3 [#uses=1]
25  icmp eq i32 %3, %0            ; <i1>:4 [#uses=1]
26  br i1 %4, label %bb1, label %bb2
27
28bb1:            ; preds = %bb
29  ret i8 %mode.0
30
31bb2:            ; preds = %bb
32  icmp eq i8 %mode.0, 1         ; <i1>:5 [#uses=1]
33  br i1 %5, label %bb5, label %bb4
34
35bb4:            ; preds = %bb2
36  %indvar.next = add i8 %mode.0, 1              ; <i8> [#uses=1]
37  br label %bb
38
39bb5:            ; preds = %bb2
40  tail call void @raise_exception( ) noreturn
41  unreachable
42}
43
44declare i32 @fegetround()
45
46declare void @raise_exception() noreturn
47