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
|
; RUN: opt < %s -aa-pipeline=tbaa,basic-aa -passes=gvn -S | FileCheck %s
; Test that basic alias queries work.
; CHECK: @test0_yes
; CHECK: add i8 %x, %x
define i8 @test0_yes(ptr %a, ptr %b) nounwind {
%x = load i8, ptr %a, !tbaa !1
store i8 0, ptr %b, !tbaa !2
%y = load i8, ptr %a, !tbaa !1
%z = add i8 %x, %y
ret i8 %z
}
; CHECK: @test0_no
; CHECK: add i8 %x, %y
define i8 @test0_no(ptr %a, ptr %b) nounwind {
%x = load i8, ptr %a, !tbaa !3
store i8 0, ptr %b, !tbaa !4
%y = load i8, ptr %a, !tbaa !3
%z = add i8 %x, %y
ret i8 %z
}
; Test that basic invariant-memory queries work.
; CHECK: @test1_yes
; CHECK: add i8 %x, %x
define i8 @test1_yes(ptr %a, ptr %b) nounwind {
%x = load i8, ptr %a, !tbaa !5
store i8 0, ptr %b
%y = load i8, ptr %a, !tbaa !5
%z = add i8 %x, %y
ret i8 %z
}
; CHECK: @test1_no
; CHECK: add i8 %x, %y
define i8 @test1_no(ptr %a, ptr %b) nounwind {
%x = load i8, ptr %a, !tbaa !6
store i8 0, ptr %b
%y = load i8, ptr %a, !tbaa !6
%z = add i8 %x, %y
ret i8 %z
}
; Root note.
!0 = !{ }
; Some type.
!1 = !{!7, !7, i64 0}
; Some other non-aliasing type.
!2 = !{!8, !8, i64 0}
; Some type.
!3 = !{!9, !9, i64 0}
; Some type in a different type system.
!4 = !{!10, !10, i64 0}
; Invariant memory.
!5 = !{!11, !11, i64 0, i1 1}
; Not invariant memory.
!6 = !{!11, !11, i64 0, i1 0}
!7 = !{ !"foo", !0 }
!8 = !{ !"bar", !0 }
!9 = !{ !"foo", !0 }
!10 = !{ !"bar", !12 }
!11 = !{ !"qux", !0}
!12 = !{!"different"}
|
