1; RUN: opt -basicaa -print-alias-sets -alias-set-saturation-threshold=2 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=NOSAT
2; RUN: opt -basicaa -print-alias-sets -alias-set-saturation-threshold=1 -S -o - < %s 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=SAT
3
4; CHECK-LABEL: 'allmust'
5; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %a, 4)
6; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, 4)
7; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %c, 4)
8; CHECK: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %d, 4)
9define void @allmust() {
10  %a = alloca i32
11  %b = alloca i32
12  %c = alloca i32
13  %d = alloca i32
14  store i32 1, i32* %a
15  store i32 2, i32* %b
16  store i32 3, i32* %c
17  store i32 4, i32* %d
18  ret void
19}
20
21; CHECK-LABEL :'mergemay'
22; NOSAT: AliasSet[{{.*}}, 2] may alias, Mod Pointers: (i32* %a, 4), (i32* %a1, 4)
23; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, 4)
24; SAT: AliasSet[{{.*}}, 2] may alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]]
25; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]]
26; SAT: AliasSet[0x[[FWD]], 2] may alias, Mod/Ref Pointers: (i32* %a, 4), (i32* %a1, 4), (i32* %b, 4)
27define void @mergemay(i32 %k) {
28  %a = alloca i32
29  %b = alloca i32
30  store i32 1, i32* %a
31  store i32 2, i32* %b
32  %a1 = getelementptr i32, i32 *%a, i32 %k
33  store i32 2, i32* %a1
34  ret void
35}
36
37; CHECK-LABEL: 'mergemust'
38; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %a, 4)
39; NOSAT: AliasSet[{{.*}}, 1] must alias, Mod Pointers: (i32* %b, 4)
40; NOSAT: AliasSet[{{.*}}, 2] may alias,  Mod Pointers: (i32* %c, 4), (i32* %d, 4)
41; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD:[0-9a-f]*]]
42; SAT: AliasSet[{{.*}}, 1] must alias, Mod forwarding to 0x[[FWD]]
43; SAT: AliasSet[{{.*}}, 2] may alias,  Mod forwarding to 0x[[FWD]]
44; SAT: AliasSet[0x[[FWD]], 3] may alias, Mod/Ref Pointers: (i32* %a, 4), (i32* %b, 4), (i32* %c, 4), (i32* %d, 4)
45define void @mergemust(i32* %c, i32* %d) {
46  %a = alloca i32
47  %b = alloca i32
48  store i32 1, i32* %a
49  store i32 2, i32* %b
50  store i32 3, i32* %c
51  store i32 4, i32* %d
52  ret void
53}
54