source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/TypeBasedAliasAnalysis/aliastest.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 1.4 KB
Line 
1; RUN: opt < %s -tbaa -basicaa -gvn -S | FileCheck %s
2
3; Test that basic alias queries work.
4
5; CHECK: @test0_yes
6; CHECK: add i8 %x, %x
7define i8 @test0_yes(i8* %a, i8* %b) nounwind {
8  %x = load i8, i8* %a, !tbaa !1
9  store i8 0, i8* %b, !tbaa !2
10  %y = load i8, i8* %a, !tbaa !1
11  %z = add i8 %x, %y
12  ret i8 %z
13}
14
15; CHECK: @test0_no
16; CHECK: add i8 %x, %y
17define i8 @test0_no(i8* %a, i8* %b) nounwind {
18  %x = load i8, i8* %a, !tbaa !3
19  store i8 0, i8* %b, !tbaa !4
20  %y = load i8, i8* %a, !tbaa !3
21  %z = add i8 %x, %y
22  ret i8 %z
23}
24
25; Test that basic invariant-memory queries work.
26
27; CHECK: @test1_yes
28; CHECK: add i8 %x, %x
29define i8 @test1_yes(i8* %a, i8* %b) nounwind {
30  %x = load i8, i8* %a, !tbaa !5
31  store i8 0, i8* %b
32  %y = load i8, i8* %a, !tbaa !5
33  %z = add i8 %x, %y
34  ret i8 %z
35}
36
37; CHECK: @test1_no
38; CHECK: add i8 %x, %y
39define i8 @test1_no(i8* %a, i8* %b) nounwind {
40  %x = load i8, i8* %a, !tbaa !6
41  store i8 0, i8* %b
42  %y = load i8, i8* %a, !tbaa !6
43  %z = add i8 %x, %y
44  ret i8 %z
45}
46
47; Root note.
48!0 = !{ }
49; Some type.
50!1 = !{!7, !7, i64 0}
51; Some other non-aliasing type.
52!2 = !{!8, !8, i64 0}
53
54; Some type.
55!3 = !{!9, !9, i64 0}
56; Some type in a different type system.
57!4 = !{!10, !10, i64 0}
58
59; Invariant memory.
60!5 = !{!11, !11, i64 0, i1 1}
61; Not invariant memory.
62!6 = !{!11, !11, i64 0, i1 0}
63!7 = !{ !"foo", !0 }
64!8 = !{ !"bar", !0 }
65!9 = !{ !"foo", !0 }
66!10 = !{ !"bar", !"different" }
67!11 = !{ !"qux", !0}
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