blob: e997374e92d9d5c06d8b99d2c5a9c4a415f71363 (
plain)
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
|
; This testcase ensures that CFL AA responds conservatively when we union
; groups of pointers together through ternary/conditional operations
; Derived from:
; void foo(bool c) {
; char a, b;
; char *m = c ? &a : &b;
; *m;
; }
;
; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
%T = type { i32, [10 x i8] }
; CHECK: Function: test
define void @test(i1 %C) {
; CHECK: 10 Total Alias Queries Performed
; CHECK: 4 no alias responses
%M = alloca %T*, align 8 ; NoAlias with %A, %B, %MS, %AP
%A = alloca %T, align 8
%B = alloca %T, align 8
%MS = select i1 %C, %T* %B, %T* %A
store %T* %MS, %T** %M
%AP = load %T*, %T** %M ; PartialAlias with %A, %B
ret void
}
|
