Add -fsycl-use-footer to tests and include missing header to int footer

Author: dm-vodopyanov

clang/lib/Sema/SemaSYCL.cpp

@@ -4897,6 +4897,7 @@ bool SYCLIntegrationFooter::emit(raw_ostream &OS) {
   for (const VarDecl *VD : SpecConstants) {
     VD = VD->getCanonicalDecl();
     std::string TopShim = EmitSpecIdShims(OS, ShimCounter, VD);
+    OS << "#include <CL/sycl/detail/defines_elementary.hpp>\n";
     OS << "__SYCL_INLINE_NAMESPACE(cl) {\n";
     OS << "namespace sycl {\n";
     OS << "namespace detail {\n";

sycl/test/on-device/basic_tests/specialization_constants/non_native/accelerator.cpp

@@ -1,6 +1,6 @@
 // REQUIRES: aoc, accelerator
 
-// RUN: %clangxx -fsycl -fsycl-targets=spir64_fpga-unknown-unknown-sycldevice %S/Inputs/common.cpp -o %t.out
+// RUN: %clangxx -fsycl -fsycl-use-footer -fsycl-targets=spir64_fpga-unknown-unknown-sycldevice %S/Inputs/common.cpp -o %t.out
 // RUN: %ACC_RUN_PLACEHOLDER %t.out
 
 // This test checks correctness of SYCL2020 non-native specialization constants

sycl/test/on-device/basic_tests/specialization_constants/non_native/cpu.cpp

@@ -1,6 +1,6 @@
 // REQUIRES: opencl-aot, cpu
 
-// RUN: %clangxx -fsycl -fsycl-targets=spir64_x86_64-unknown-unknown-sycldevice %S/Inputs/common.cpp -o %t.out
+// RUN: %clangxx -fsycl -fsycl-use-footer -fsycl-targets=spir64_x86_64-unknown-unknown-sycldevice %S/Inputs/common.cpp -o %t.out
 // RUN: %CPU_RUN_PLACEHOLDER %t.out
 
 // This test checks correctness of SYCL2020 non-native specialization constants

sycl/test/on-device/basic_tests/specialization_constants/non_native/cuda.cpp

@@ -1,6 +1,6 @@
 // REQUIRES: cuda
 
-// RUN: %clangxx -fsycl -fsycl-targets=nvptx64-unknown-unknown-sycldevice %S/Inputs/common.cpp -o %t.out
+// RUN: %clangxx -fsycl -fsycl-use-footer -fsycl-targets=nvptx64-unknown-unknown-sycldevice %S/Inputs/common.cpp -o %t.out
 // RUN: env SYCL_DEVICE_FILTER=cuda %t.out
 
 // TODO: enable this test then compile-time error in sycl-post-link is fixed

sycl/test/on-device/basic_tests/specialization_constants/non_native/gpu.cpp

@@ -2,7 +2,7 @@
 // UNSUPPORTED: cuda
 // CUDA is not compatible with SPIR.
 
-// RUN: %clangxx -fsycl -fsycl-targets=spir64_gen-unknown-unknown-sycldevice -Xsycl-target-backend=spir64_gen-unknown-unknown-sycldevice "-device *" %S/Inputs/common.cpp -o %t.out
+// RUN: %clangxx -fsycl -fsycl-use-footer -fsycl-targets=spir64_gen-unknown-unknown-sycldevice -Xsycl-target-backend=spir64_gen-unknown-unknown-sycldevice "-device *" %S/Inputs/common.cpp -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out
 
 // This test checks correctness of SYCL2020 non-native specialization constants