Implement C++ support for vector and extended vector types. This

involves extending implicit conversion sequences to model vector
conversions and vector splats, along with teaching the C++ conditional
operator-checking code about vector types.

Fixes <rdar://problem/7983501>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104081 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 102 insertions, 0 deletions

diff --git a/test/SemaCXX/vector.cpp b/test/SemaCXX/vector.cpp
new file mode 100644
index 0000000000..ddbe902839
--- /dev/null
+++ b/test/SemaCXX/vector.cpp
@@ -0,0 +1,102 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -verify %s
+typedef char char16 __attribute__ ((__vector_size__ (16)));
+typedef long long longlong16 __attribute__ ((__vector_size__ (16)));
+typedef char char16_e __attribute__ ((__ext_vector_type__ (16)));
+typedef long long longlong16_e __attribute__ ((__ext_vector_type__ (2)));
+
+#if 1
+// Test overloading and function calls with vector types.
+void f0(char16);
+
+void f0_test(char16 c16, longlong16 ll16, char16_e c16e, longlong16_e ll16e) {
+  f0(c16);
+  f0(ll16);
+  f0(c16e);
+  f0(ll16e);
+}
+
+int &f1(char16); // expected-note 2{{candidate function}}
+float &f1(longlong16); // expected-note 2{{candidate function}}
+
+void f1_test(char16 c16, longlong16 ll16, char16_e c16e, longlong16_e ll16e) {
+  int &ir1 = f1(c16);
+  float &fr1 = f1(ll16);
+  f1(c16e); // expected-error{{call to 'f1' is ambiguous}}
+  f1(ll16e); // expected-error{{call to 'f1' is ambiguous}}
+}
+
+void f2(char16_e); // expected-note{{no known conversion from 'longlong16_e' to 'char16_e' for 1st argument}}
+
+void f2_test(char16 c16, longlong16 ll16, char16_e c16e, longlong16_e ll16e) {
+  f2(c16);
+  f2(ll16);
+  f2(c16e);
+  f2(ll16e); // expected-error{{no matching function}}
+  f2('a');
+  f2(17);
+}
+#endif
+
+// Test the conditional operator with vector types.
+void conditional(bool Cond, char16 c16, longlong16 ll16, char16_e c16e, 
+                 longlong16_e ll16e) {
+  // Conditional operators with the same type.
+  __typeof__(Cond? c16 : c16) *c16p1 = &c16;
+  __typeof__(Cond? ll16 : ll16) *ll16p1 = &ll16;
+  __typeof__(Cond? c16e : c16e) *c16ep1 = &c16e;
+  __typeof__(Cond? ll16e : ll16e) *ll16ep1 = &ll16e;
+
+  // Conditional operators with similar types.
+  __typeof__(Cond? c16 : c16e) *c16ep2 = &c16e;
+  __typeof__(Cond? c16e : c16) *c16ep3 = &c16e;
+  __typeof__(Cond? ll16 : ll16e) *ll16ep2 = &ll16e;
+  __typeof__(Cond? ll16e : ll16) *ll16ep3 = &ll16e;
+
+  // Conditional operators with incompatible types.
+  (void)(Cond? c16 : ll16); // expected-error{{can't convert between vector values}}
+  (void)(Cond? ll16e : c16e); // expected-error{{can't convert between vector values}}
+  (void)(Cond? ll16e : c16); // expected-error{{can't convert between vector values}}
+}
+
+// Test C++ cast'ing of vector types.
+void casts(longlong16 ll16, longlong16_e ll16e) {
+  // C-style casts.
+  (void)(char16)ll16;
+  (void)(char16_e)ll16;
+  (void)(longlong16)ll16;
+  (void)(longlong16_e)ll16;
+  (void)(char16)ll16e;
+  (void)(char16_e)ll16e;
+  (void)(longlong16)ll16e;
+  (void)(longlong16_e)ll16e;
+
+  // Function-style casts.
+  (void)char16(ll16);
+  (void)char16_e(ll16);
+  (void)longlong16(ll16);
+  (void)longlong16_e(ll16);
+  (void)char16(ll16e);
+  (void)char16_e(ll16e);
+  (void)longlong16(ll16e);
+  (void)longlong16_e(ll16e);
+
+  // static_cast
+  (void)static_cast<char16>(ll16);
+  (void)static_cast<char16_e>(ll16);
+  (void)static_cast<longlong16>(ll16);
+  (void)static_cast<longlong16_e>(ll16);
+  (void)static_cast<char16>(ll16e);
+  (void)static_cast<char16_e>(ll16e); // expected-error{{static_cast from 'longlong16_e' to 'char16_e' is not allowed}}
+  (void)static_cast<longlong16>(ll16e);
+  (void)static_cast<longlong16_e>(ll16e);
+
+  // reinterpret_cast
+  (void)reinterpret_cast<char16>(ll16);
+  (void)reinterpret_cast<char16_e>(ll16);
+  (void)reinterpret_cast<longlong16>(ll16);
+  (void)reinterpret_cast<longlong16_e>(ll16);
+  (void)reinterpret_cast<char16>(ll16e);
+  (void)reinterpret_cast<char16_e>(ll16e);
+  (void)reinterpret_cast<longlong16>(ll16e);
+  (void)reinterpret_cast<longlong16_e>(ll16e);
+}