[SYCL] Fix test failure due to size discrepancy of pointers

in 32 and 64 bit environment. Fix uses regex to specify size
in diagnostic.

Signed-off-by: Elizabeth Andrews <[email protected]>

Author: elizabethandrews

clang/test/SemaSYCL/args-size-overflow.cpp

@@ -10,7 +10,7 @@ queue q;
 using Accessor =
     accessor<int, 1, cl::sycl::access::mode::read_write, cl::sycl::access::target::global_buffer>;
 
-// expected-warning@Inputs/sycl.hpp:220 {{size of kernel arguments (7994 bytes) may exceed the supported maximum of 2048 bytes on some devices}}
+// expected-warning-re@Inputs/sycl.hpp:220 {{size of kernel arguments ({{.*}} bytes) may exceed the supported maximum of 2048 bytes on some devices}}
 
 void use() {
   struct S {
@@ -25,4 +25,4 @@ void use() {
     // expected-note@+1 {{in instantiation of function template specialization}}
     h.single_task<class Foo>(L);
   });
-}
+}