Improve handling of vector casts in C++.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82072 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/vector-casts.cpp b/test/SemaCXX/vector-casts.cpp
new file mode 100644
index 0000000..5b08043
--- /dev/null
+++ b/test/SemaCXX/vector-casts.cpp
@@ -0,0 +1,40 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+typedef int __v2si __attribute__((__vector_size__(8)));
+typedef short __v4hi __attribute__((__vector_size__(8)));
+typedef short __v8hi __attribute__((__vector_size__(16)));
+
+struct S { };
+
+void f() {
+ __v2si v2si;
+ __v4hi v4hi;
+ __v8hi v8hi;
+ unsigned long long ll;
+ unsigned char c;
+ S s;
+
+ (void)reinterpret_cast<__v2si>(v4hi);
+ (void)(__v2si)v4hi;
+ (void)reinterpret_cast<__v4hi>(v2si);
+ (void)(__v4hi)v2si;
+ (void)reinterpret_cast<unsigned long long>(v2si);
+ (void)(unsigned long long)v2si;
+ (void)reinterpret_cast<__v2si>(ll);
+ (void)(__v2si)(ll);
+
+ (void)reinterpret_cast<S>(v2si); // expected-error {{reinterpret_cast from '__v2si' to 'struct S' is not allowed}}
+ (void)(S)v2si; // expected-error {{C-style cast from '__v2si' to 'struct S' is not allowed}}
+ (void)reinterpret_cast<__v2si>(s); // expected-error {{reinterpret_cast from 'struct S' to '__v2si' is not allowed}}
+ (void)(__v2si)s; // expected-error {{C-style cast from 'struct S' to '__v2si' is not allowed}}
+
+ (void)reinterpret_cast<unsigned char>(v2si); // expected-error {{reinterpret_cast from vector '__v2si' to scalar 'unsigned char' of different size}}
+ (void)(unsigned char)v2si; // expected-error {{C-style cast from vector '__v2si' to scalar 'unsigned char' of different size}}
+ (void)reinterpret_cast<__v2si>(c); // expected-error {{reinterpret_cast from scalar 'unsigned char' to vector '__v2si' of different size}}
+
+ (void)reinterpret_cast<__v8hi>(v4hi); // expected-error {{reinterpret_cast from vector '__v4hi' to vector '__v8hi' of different size}}
+ (void)(__v8hi)v4hi; // expected-error {{C-style cast from vector '__v4hi' to vector '__v8hi' of different size}}
+ (void)reinterpret_cast<__v4hi>(v8hi); // expected-error {{reinterpret_cast from vector '__v8hi' to vector '__v4hi' of different size}}
+ (void)(__v4hi)v8hi; // expected-error {{C-style cast from vector '__v8hi' to vector '__v4hi' of different size}}
+}
+
+