llvm-project/clang/test/SemaCXX/vector-casts.cpp

41 lines
2.0 KiB
C++

// RUN: %clang_cc1 -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 { }; // expected-note 2 {{candidate constructor}}
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 'S' is not allowed}}
(void)(S)v2si; // expected-error {{no matching conversion for C-style cast from '__v2si' to 'S'}}
(void)reinterpret_cast<__v2si>(s); // expected-error {{reinterpret_cast from 'S' to '__v2si' is not allowed}}
(void)(__v2si)s; // expected-error {{cannot convert 'S' to '__v2si' without a conversion operator}}
(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}}
}