Hal Finkel | 8eae3ad | 2014-10-06 14:42:56 +0000 | [diff] [blame] | 1 | ; This testcase ensures that CFL AA responds conservatively when we union |
| 2 | ; groups of pointers together through ternary/conditional operations |
| 3 | ; Derived from: |
| 4 | ; void foo(bool c) { |
| 5 | ; char a, b; |
| 6 | ; char *m = c ? &a : &b; |
| 7 | ; *m; |
| 8 | ; } |
| 9 | ; |
| 10 | |
| 11 | ; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s |
| 12 | |
| 13 | %T = type { i32, [10 x i8] } |
| 14 | |
| 15 | ; CHECK: Function: test |
| 16 | |
| 17 | define void @test(i1 %C) { |
| 18 | ; CHECK: 10 Total Alias Queries Performed |
| 19 | ; CHECK: 4 no alias responses |
| 20 | %M = alloca %T*, align 8 ; NoAlias with %A, %B, %MS, %AP |
| 21 | %A = alloca %T, align 8 |
| 22 | %B = alloca %T, align 8 |
| 23 | |
| 24 | %MS = select i1 %C, %T* %B, %T* %A |
| 25 | |
| 26 | store %T* %MS, %T** %M |
| 27 | |
| 28 | %AP = load %T** %M ; PartialAlias with %A, %B |
| 29 | |
| 30 | ret void |
| 31 | } |