update diag message

Signed-off-by: Soumi Manna <[email protected]>

Author: smanna12

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -11433,8 +11433,8 @@ def err_invalid_std_type_in_sycl_kernel : Error<"%0 is an invalid kernel name, "
 def err_sycl_kernel_incorrectly_named : Error<
   "%select{%1 should be globally visible"
   "|unscoped enum %1 requires fixed underlying type"
-  "|unnamed type %1 is not valid in a SYCL kernel name, provide a kernel name "
-  "or enable unnamed kernel lambdas via -fsycl-unnamed-lambda"
+  "|unnamed type %1 is invalid; provide a kernel name, or use "
+  "'-fsycl-unnamed-lambda' to enable unnamed kernel lambdas"
   "}0">;
 
 def err_sycl_kernel_not_function_object

clang/lib/Sema/SemaSYCL.cpp

@@ -3690,7 +3690,7 @@ class SYCLKernelNameTypeVisitor
           if (UnnamedLambdaUsed) {
             S.Diag(KernelInvocationFuncLoc,
                    diag::err_sycl_kernel_incorrectly_named)
-                << /* unnamed type is not valid in a SYCL kernel name */ 2
+                << /* unnamed type is invalid */ 2
                 << KernelNameType;
             IsInvalid = true;
             return;

clang/test/SemaSYCL/unnamed-kernel.cpp

@@ -150,7 +150,7 @@ struct MyWrapper {
 int main() {
   cl::sycl::queue q;
 #ifndef __SYCL_UNNAMED_LAMBDA__
-  // expected-error-re@#KernelSingleTask {{unnamed type '(lambda at {{.*}}unnamed-kernel.cpp{{.*}}' is not valid in a SYCL kernel name, provide a kernel name or enable unnamed kernel lambdas via -fsycl-unnamed-lambda}}
+  // expected-error-re@#KernelSingleTask {{unnamed type '(lambda at {{.*}}unnamed-kernel.cpp{{.*}}' is invalid; provide a kernel name, or use '-fsycl-unnamed-lambda' to enable unnamed kernel lambdas}}
   // expected-note@+2{{in instantiation of function template specialization}}
 #endif
   q.submit([&](cl::sycl::handler &h) { h.single_task([] {}); });