================
@@ -0,0 +1,36 @@
+// REQUIRES: spirv-registered-target
+// RUN: %clang_cc1 -fsyntax-only -verify -std=gnu++11 -triple spirv64
-Wno-unused-value %s
+
+// __spirv_event_t is an opaque type: it cannot be initialized from, converted
+// to, or cast from other types, nor used in arithmetic. It cannot be used in
+// constant evaluation.
+void foo() {
+ int n = 100;
+ __spirv_event_t v = 0; // expected-error {{cannot initialize a variable of
type '__spirv_event_t' with an rvalue of type 'int'}}
+ static_cast<__spirv_event_t>(n); // expected-error {{static_cast from 'int'
to '__spirv_event_t' is not allowed}}
+ reinterpret_cast<__spirv_event_t>(n); // expected-error {{reinterpret_cast
from 'int' to '__spirv_event_t' is not allowed}}
+ (void)(v + v); // expected-error {{invalid operands to binary expression
('__spirv_event_t' and '__spirv_event_t')}}
+ int x(v); // expected-error {{cannot initialize a variable of type 'int'
with an lvalue of type '__spirv_event_t'}}
+ __spirv_event_t k;
+ int *ip = (int *)k; // expected-error {{cannot cast from type
'__spirv_event_t' to pointer type 'int *'}}
+ constexpr __spirv_event_t e; // expected-error {{constexpr variable cannot
have non-literal type 'const __spirv_event_t'}}
+}
+
+template <__spirv_event_t V> void baz(); // expected-error {{a non-type
template parameter cannot have type '__spirv_event_t'}}
+
+// __spirv_event_t can be used as a function parameter, a template argument,
and
+// a struct field.
+template <class T> void bar(T);
+void use(__spirv_event_t r) { bar(r); }
----------------
AaronBallman wrote:
Can you also add test coverage showing that we correctly handle specializations
with this type?
Can it be a return type for a function?
https://github.com/llvm/llvm-project/pull/207077
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