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
|
; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
; If GEP base doesn't alias Z, then GEP doesn't alias Z.
; rdar://7282591
@Y = common global i32 0
@Z = common global i32 0
; CHECK: Function: foo
; CHECK: NoAlias: i32* %P, i32* @Z
define void @foo(i32 %cond) nounwind {
entry:
%a = alloca i32
%tmp = icmp ne i32 %cond, 0
br i1 %tmp, label %bb, label %bb1
bb:
%b = getelementptr i32* %a, i32 0
br label %bb2
bb1:
br label %bb2
bb2:
%P = phi i32* [ %b, %bb ], [ @Y, %bb1 ]
%tmp1 = load i32* @Z, align 4
store i32 123, i32* %P, align 4
%tmp2 = load i32* @Z, align 4
br label %return
return:
ret void
}
|
