Add more testing cases for tbaa.struct

Testing cases for structs of structs and unions of structs.

llvm-svn: 177612

diff --git a/clang/test/CodeGen/tbaa-struct.cpp b/clang/test/CodeGen/tbaa-struct.cpp
index 8b30aa0..12a6f4d 100644 (file)
--- a/clang/test/CodeGen/tbaa-struct.cpp
+++ b/clang/test/CodeGen/tbaa-struct.cpp
@@ -14,4 +14,33 @@ void copy(struct A *a, struct A *b) {
 
 // CHECK: target datalayout = "{{.*}}p:[[P:64|32]]
 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 16, i32 4, i1 false), !tbaa.struct [[TS:!.*]]
+
+struct B {
+  char c1;
+  struct A a;
+  int ii;
+};
+
+void copy2(struct B *a, struct B *b) {
+  *a = *b;
+}
+
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 24, i32 4, i1 false), !tbaa.struct [[TS2:!.*]]
+
+typedef _Complex int T2;
+typedef _Complex char T5;
+typedef _Complex int T7;
+typedef struct T4 { T5 field0; T7 field1; } T4;
+typedef union T1 { T2 field0; T4 field1; } T1;
+
+void copy3 (T1 *a, T1 *b) {
+  *a = *b;
+}
+
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i[[P]](i8* %{{.*}}, i8* %{{.*}}, i[[P]] 12, i32 4, i1 false), !tbaa.struct [[TS3:!.*]]
+
 // CHECK: [[TS]] = metadata !{i64 0, i64 2, metadata !{{.*}}, i64 4, i64 4, metadata !{{.*}}, i64 8, i64 1, metadata !{{.*}}, i64 12, i64 4, metadata !{{.*}}}
+// (offset, size) = (0,1) char; (4,2) short; (8,4) int; (12,1) char; (16,4) int; (20,4) int
+// CHECK: [[TS2]] = metadata !{i64 0, i64 1, metadata !{{.*}}, i64 4, i64 2, metadata !{{.*}}, i64 8, i64 4, metadata !{{.*}}, i64 12, i64 1, metadata !{{.*}}, i64 16, i64 4, metadata {{.*}}, i64 20, i64 4, metadata {{.*}}}
+// (offset, size) = (0,8) char; (0,2) char; (4,8) char
+// CHECK: [[TS3]] = metadata !{i64 0, i64 8, metadata !{{.*}}, i64 0, i64 2, metadata !{{.*}}, i64 4, i64 8, metadata !{{.*}}}