[SYCL] Add feature macro for the matrix extension (#3564)

Add feature macro for the matrix interface and its first implementation for AMX

Author: yubingex007-a11y

sycl/include/CL/sycl/ONEAPI/intel_matrix/matrix.hpp

@@ -14,6 +14,10 @@
 
 #pragma once
 
+#include <CL/sycl/feature_test.hpp>
+
+#if (SYCL_EXT_ONEAPI_MATRIX == 1)
 #if defined(__AMXTILE__) && defined(__AMXINT8__) && defined(__AMXBF16__)
 #include <CL/sycl/ONEAPI/intel_matrix/matrix-amx.hpp>
 #endif
+#endif

sycl/include/CL/sycl/feature_test.hpp

@@ -12,7 +12,9 @@ namespace sycl {
 
 // Feature test macro definitions
 
+// TODO: Move these feature-test macros to compiler driver.
 #define SYCL_EXT_INTEL_DEVICE_INFO 1
+#define SYCL_EXT_ONEAPI_MATRIX 1
 
 } // namespace sycl
 } // __SYCL_INLINE_NAMESPACE(cl)

sycl/test/on-device/extensions/matrix-amx-bf16-test.cpp

@@ -1,5 +1,6 @@
 // RUN: %clangxx -march=sapphirerapids -fsycl -O2 %s -o %t.out
 #include <CL/sycl.hpp>
+#if (SYCL_EXT_ONEAPI_MATRIX == 1)
 #include <iostream>
 
 using namespace cl::sycl;
@@ -182,3 +183,4 @@ int main() {
     std::cout << "\n";
   }
 }
+#endif

sycl/test/on-device/extensions/matrix-amx-int8-test.cpp

@@ -1,5 +1,6 @@
 // RUN: %clangxx -march=sapphirerapids -fsycl -O2 %s -o %t.out
 #include <CL/sycl.hpp>
+#if (SYCL_EXT_ONEAPI_MATRIX == 1)
 #include <iostream>
 
 using namespace cl::sycl;
@@ -167,3 +168,4 @@ int main() {
     std::cout << "\n";
   }
 }
+#endif