diff options
Diffstat (limited to 'test/CodeGen/may-alias.c')
| -rw-r--r-- | test/CodeGen/may-alias.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/may-alias.c b/test/CodeGen/may-alias.c new file mode 100644 index 0000000..f3ea792 --- /dev/null +++ b/test/CodeGen/may-alias.c @@ -0,0 +1,21 @@ +// RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -disable-llvm-optzns -o %t %s +// RUN: FileCheck < %t %s + +// Types with the may_alias attribute should be considered equivalent +// to char for aliasing. + +typedef int __attribute__((may_alias)) aliasing_int; + +void test0(aliasing_int *ai, int *i) +{ + *ai = 0; + *i = 1; +} + +// CHECK: store i32 0, i32* %{{.*}}, !tbaa !1 +// CHECK: store i32 1, i32* %{{.*}}, !tbaa !3 + +// CHECK: !0 = metadata !{metadata !"any pointer", metadata !1} +// CHECK: !1 = metadata !{metadata !"omnipotent char", metadata !2} +// CHECK: !2 = metadata !{metadata !"Simple C/C++ TBAA", null} +// CHECK: !3 = metadata !{metadata !"int", metadata !1} |
