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
59
60
61
62
63
64
65
66
67
68
69
70
71
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -S | FileCheck %s
define i32 @phi_after_label(i1 %cc) {
; CHECK-LABEL: define i32 @phi_after_label(
; CHECK-SAME: i1 [[CC:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: br i1 [[CC]], label %[[THEN:.*]], label %[[END:.*]]
; CHECK: [[THEN]]:
; CHECK-NEXT: br label %[[END]]
; CHECK: [[END]]:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ 1, %[[THEN]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %cc, label %then, label %end
then:
br label %end
end:
%r = phi i32 [ 0, %entry ], [ 1, %then ]
ret i32 %r
}
define void @phi_before_label(i32 %bound) {
; CHECK-LABEL: define void @phi_before_label(
; CHECK-SAME: i32 [[BOUND:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: br label %[[LOOP:.*]]
; CHECK: [[LOOP]]:
; CHECK-NEXT: [[CTR:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[CTR_NEXT:%.*]], %[[LOOP]] ]
; CHECK-NEXT: [[CTR_NEXT]] = add i32 [[CTR]], 1
; CHECK-NEXT: [[CC:%.*]] = icmp ult i32 [[CTR_NEXT]], [[BOUND]]
; CHECK-NEXT: br i1 [[CC]], label %[[LOOP]], label %[[END:.*]]
; CHECK: [[END]]:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%ctr = phi i32 [ 0, %entry ], [ %ctr.next, %loop ]
%ctr.next = add i32 %ctr, 1
%cc = icmp ult i32 %ctr.next, %bound
br i1 %cc, label %loop, label %end
end:
ret void
}
define i32 @phi_after_label_unnamed(i1 %cc) {
; CHECK-LABEL: define i32 @phi_after_label_unnamed(
; CHECK-SAME: i1 [[CC:%.*]]) {
; CHECK-NEXT: br i1 [[CC]], label %[[BB1:.*]], label %[[BB2:.*]]
; CHECK: [[BB1]]:
; CHECK-NEXT: br label %[[BB2]]
; CHECK: [[BB2]]:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ 0, [[TMP0:%.*]] ], [ 1, %[[BB1]] ]
; CHECK-NEXT: ret i32 [[R]]
;
0:
br i1 %cc, label %1, label %2
1:
br label %2
2:
%r = phi i32 [ 0, %0 ], [ 1, %1 ]
ret i32 %r
}
|
