1; RUN: opt < %s -analyze -block-freq | FileCheck %s
2; RUN: opt < %s -passes='print<block-freq>' -disable-output 2>&1 | FileCheck %s
3
4; CHECK-LABEL: Printing analysis {{.*}} for function 'nested_loop_with_branches'
5; CHECK-NEXT: block-frequency-info: nested_loop_with_branches
6define void @nested_loop_with_branches(i32 %a) {
7; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]]
8entry:
9  %v0 = call i1 @foo0(i32 %a)
10  br i1 %v0, label %exit, label %outer, !prof !0
11
12; CHECK-NEXT: outer: float = 12.0,
13outer:
14  %i = phi i32 [ 0, %entry ], [ %i.next, %inner.end ], [ %i.next, %no_inner ]
15  %i.next = add i32 %i, 1
16  %do_inner = call i1 @foo1(i32 %i)
17  br i1 %do_inner, label %no_inner, label %inner, !prof !0
18
19; CHECK-NEXT: inner: float = 36.0,
20inner:
21  %j = phi i32 [ 0, %outer ], [ %j.next, %inner.end ]
22  %side = call i1 @foo3(i32 %j)
23  br i1 %side, label %left, label %right, !prof !0
24
25; CHECK-NEXT: left: float = 9.0,
26left:
27  %v4 = call i1 @foo4(i32 %j)
28  br label %inner.end
29
30; CHECK-NEXT: right: float = 27.0,
31right:
32  %v5 = call i1 @foo5(i32 %j)
33  br label %inner.end
34
35; CHECK-NEXT: inner.end: float = 36.0,
36inner.end:
37  %stay_inner = phi i1 [ %v4, %left ], [ %v5, %right ]
38  %j.next = add i32 %j, 1
39  br i1 %stay_inner, label %inner, label %outer, !prof !1
40
41; CHECK-NEXT: no_inner: float = 3.0,
42no_inner:
43  %continue = call i1 @foo6(i32 %i)
44  br i1 %continue, label %outer, label %exit, !prof !1
45
46; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]]
47exit:
48  ret void
49}
50
51declare i1 @foo0(i32)
52declare i1 @foo1(i32)
53declare i1 @foo2(i32)
54declare i1 @foo3(i32)
55declare i1 @foo4(i32)
56declare i1 @foo5(i32)
57declare i1 @foo6(i32)
58
59!0 = !{!"branch_weights", i32 1, i32 3}
60!1 = !{!"branch_weights", i32 3, i32 1}
61