1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
| ; This code is virtually identical to last-call-bonus.ll, but the callsites
; to the internal functions are cold, thereby preventing the last call to
; static bonus from being applied.
; RUN: opt < %s -passes='function(require<opt-remark-emit>,unroll),require<profile-summary>,cgscc(inline)' -unroll-threshold=15000 -inline-threshold=250 -S | FileCheck %s
; CHECK-LABEL: define internal i32 @baz
define internal i32 @baz() {
entry:
br label %bb1
bb1:
%ind = phi i32 [ 0, %entry ], [ %inc, %bb1 ]
call void @extern()
%inc = add nsw i32 %ind, 1
%cmp = icmp sgt i32 %inc, 510
br i1 %cmp, label %ret, label %bb1
ret:
ret i32 0
}
; CHECK-LABEL: define internal i32 @bar
define internal i32 @bar(i1 %b) {
entry:
br label %bb1
bb1:
%ind = phi i32 [ 0, %entry ], [ %inc, %bb1 ]
call void @extern()
%inc = add nsw i32 %ind, 1
%cmp = icmp sgt i32 %inc, 510
br i1 %cmp, label %for.exit, label %bb1
for.exit:
br i1 %b, label %bb2, label %ret, !prof !0
bb2:
; CHECK: call i32 @baz
call i32 @baz()
br label %ret
ret:
ret i32 0
}
; CHECK-LABEL: define i32 @foo
define i32 @foo(i1 %b) {
entry:
br i1 %b, label %bb1, label %ret, !prof !0
bb1:
; CHECK: call i32 @bar
call i32 @bar(i1 %b)
br label %ret
ret:
ret i32 0
}
declare void @extern()
!0 = !{!"branch_weights", i32 1, i32 2500}
|