| Dan Gohman | c289769 | 2010-12-13 23:51:08 +0000 | [diff] [blame^] | 1 | // RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -disable-llvm-optzns -o %t %s |
| 2 | // RUN: FileCheck < %t %s |
| 3 | |
| 4 | // Types with the may_alias attribute should be considered equivalent |
| 5 | // to char for aliasing. |
| 6 | |
| 7 | typedef int __attribute__((may_alias)) aliasing_int; |
| 8 | |
| 9 | void test0(aliasing_int *ai, int *i) |
| 10 | { |
| 11 | *ai = 0; |
| 12 | *i = 1; |
| 13 | } |
| 14 | |
| 15 | // CHECK: store i32 0, i32* %tmp, !tbaa !1 |
| 16 | // CHECK: store i32 1, i32* %tmp1, !tbaa !3 |
| 17 | |
| 18 | // CHECK: !0 = metadata !{metadata !"any pointer", metadata !1} |
| 19 | // CHECK: !1 = metadata !{metadata !"omnipotent char", metadata !2} |
| 20 | // CHECK: !2 = metadata !{metadata !"Simple C/C++ TBAA", null} |
| 21 | // CHECK: !3 = metadata !{metadata !"int", metadata !1} |