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
72
73
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=dse -S | FileCheck --check-prefix=NO-LIMIT %s
; RUN: opt < %s -passes=dse -dse-memoryssa-scanlimit=0 -S | FileCheck --check-prefix=LIMIT-0 %s
; RUN: opt < %s -passes=dse -dse-memoryssa-scanlimit=2 -S | FileCheck --check-prefix=LIMIT-2 %s
; RUN: opt < %s -passes=dse -dse-memoryssa-scanlimit=3 -S | FileCheck --check-prefix=LIMIT-3 %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
define void @test2(ptr noalias %P, ptr noalias %Q, ptr noalias %R) {
; NO-LIMIT-LABEL: @test2(
; NO-LIMIT-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; NO-LIMIT: bb1:
; NO-LIMIT-NEXT: br label [[BB3:%.*]]
; NO-LIMIT: bb2:
; NO-LIMIT-NEXT: br label [[BB3]]
; NO-LIMIT: bb3:
; NO-LIMIT-NEXT: store i32 0, ptr [[Q:%.*]], align 4
; NO-LIMIT-NEXT: store i32 0, ptr [[R:%.*]], align 4
; NO-LIMIT-NEXT: store i32 0, ptr [[P:%.*]], align 4
; NO-LIMIT-NEXT: ret void
;
; LIMIT-0-LABEL: @test2(
; LIMIT-0-NEXT: store i32 1, ptr [[P:%.*]], align 4
; LIMIT-0-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; LIMIT-0: bb1:
; LIMIT-0-NEXT: br label [[BB3:%.*]]
; LIMIT-0: bb2:
; LIMIT-0-NEXT: br label [[BB3]]
; LIMIT-0: bb3:
; LIMIT-0-NEXT: store i32 0, ptr [[Q:%.*]], align 4
; LIMIT-0-NEXT: store i32 0, ptr [[R:%.*]], align 4
; LIMIT-0-NEXT: store i32 0, ptr [[P]], align 4
; LIMIT-0-NEXT: ret void
;
; LIMIT-2-LABEL: @test2(
; LIMIT-2-NEXT: store i32 1, ptr [[P:%.*]], align 4
; LIMIT-2-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; LIMIT-2: bb1:
; LIMIT-2-NEXT: br label [[BB3:%.*]]
; LIMIT-2: bb2:
; LIMIT-2-NEXT: br label [[BB3]]
; LIMIT-2: bb3:
; LIMIT-2-NEXT: store i32 0, ptr [[Q:%.*]], align 4
; LIMIT-2-NEXT: store i32 0, ptr [[R:%.*]], align 4
; LIMIT-2-NEXT: store i32 0, ptr [[P]], align 4
; LIMIT-2-NEXT: ret void
;
; LIMIT-3-LABEL: @test2(
; LIMIT-3-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; LIMIT-3: bb1:
; LIMIT-3-NEXT: br label [[BB3:%.*]]
; LIMIT-3: bb2:
; LIMIT-3-NEXT: br label [[BB3]]
; LIMIT-3: bb3:
; LIMIT-3-NEXT: store i32 0, ptr [[Q:%.*]], align 4
; LIMIT-3-NEXT: store i32 0, ptr [[R:%.*]], align 4
; LIMIT-3-NEXT: store i32 0, ptr [[P:%.*]], align 4
; LIMIT-3-NEXT: ret void
;
store i32 1, ptr %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb3
bb3:
store i32 0, ptr %Q
store i32 0, ptr %R
store i32 0, ptr %P
ret void
}
|
