1; RUN: opt < %s -analyze -block-freq | FileCheck %s
2
3; CHECK-LABEL: Printing analysis {{.*}} for function 'nested_loop_with_branches'
4; CHECK-NEXT: block-frequency-info: nested_loop_with_branches
5define void @nested_loop_with_branches(i32 %a) {
6; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]]
7entry:
8  %v0 = call i1 @foo0(i32 %a)
9  br i1 %v0, label %exit, label %outer, !prof !0
10
11; CHECK-NEXT: outer: float = 12.0,
12outer:
13  %i = phi i32 [ 0, %entry ], [ %i.next, %inner.end ], [ %i.next, %no_inner ]
14  %i.next = add i32 %i, 1
15  %do_inner = call i1 @foo1(i32 %i)
16  br i1 %do_inner, label %no_inner, label %inner, !prof !0
17
18; CHECK-NEXT: inner: float = 36.0,
19inner:
20  %j = phi i32 [ 0, %outer ], [ %j.next, %inner.end ]
21  %side = call i1 @foo3(i32 %j)
22  br i1 %side, label %left, label %right, !prof !0
23
24; CHECK-NEXT: left: float = 9.0,
25left:
26  %v4 = call i1 @foo4(i32 %j)
27  br label %inner.end
28
29; CHECK-NEXT: right: float = 27.0,
30right:
31  %v5 = call i1 @foo5(i32 %j)
32  br label %inner.end
33
34; CHECK-NEXT: inner.end: float = 36.0,
35inner.end:
36  %stay_inner = phi i1 [ %v4, %left ], [ %v5, %right ]
37  %j.next = add i32 %j, 1
38  br i1 %stay_inner, label %inner, label %outer, !prof !1
39
40; CHECK-NEXT: no_inner: float = 3.0,
41no_inner:
42  %continue = call i1 @foo6(i32 %i)
43  br i1 %continue, label %outer, label %exit, !prof !1
44
45; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]]
46exit:
47  ret void
48}
49
50declare i1 @foo0(i32)
51declare i1 @foo1(i32)
52declare i1 @foo2(i32)
53declare i1 @foo3(i32)
54declare i1 @foo4(i32)
55declare i1 @foo5(i32)
56declare i1 @foo6(i32)
57
58!0 = !{!"branch_weights", i32 1, i32 3}
59!1 = !{!"branch_weights", i32 3, i32 1}
60