Add basic support for adding !tbaa.struct metadata on llvm.memcpy calls for
struct assignment.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164853 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/tbaa-struct.cpp b/test/CodeGen/tbaa-struct.cpp
new file mode 100644
index 0000000..6bff337
--- /dev/null
+++ b/test/CodeGen/tbaa-struct.cpp
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 -emit-llvm -o - -O1 %s | FileCheck %s
+//
+// Check that we generate !tbaa.struct metadata for struct copies.
+struct A {
+ short s;
+ int i;
+ char c;
+ int j;
+};
+
+void copy(struct A *a, struct A *b) {
+ *a = *b;
+}
+
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* %{{.*}}, i64 16, i32 4, i1 false), !tbaa.struct [[TS:!.*]]
+// CHECK: [[TS]] = metadata !{i64 0, i64 2, metadata !{{.*}}, i64 4, i64 4, metadata !{{.*}}, i64 8, i64 1, metadata !{{.*}}, i64 12, i64 4, metadata !{{.*}}}