[SYCL] Test multi-target compilation for SYCL2020 spec constants (#584)

Signed-off-by: Artem Gindinson <[email protected]>

Author: Artem Gindinson

SYCL/SpecConstants/2020/non_native/multiple-targets.cpp

@@ -0,0 +1,14 @@
+// REQUIRES: opencl-aot, cpu
+// UNSUPPORTED: cuda
+
+// RUN: %clangxx -fsycl -fsycl-targets=spir64,spir64_x86_64 %S/Inputs/common.cpp -o %t_spv_cpu.out
+// RUN: %CPU_RUN_PLACEHOLDER %t_spv_cpu.out
+// RUN: %GPU_RUN_PLACEHOLDER %t_spv_cpu.out
+// Ensure that image ordering does not impact the execution
+// RUN: %clangxx -fsycl -fsycl-targets=spir64_x86_64,spir64 %S/Inputs/common.cpp -o %t_cpu_spv.out
+// RUN: %CPU_RUN_PLACEHOLDER %t_cpu_spv.out
+// RUN: %GPU_RUN_PLACEHOLDER %t_cpu_spv.out
+
+// This test checks correctness of SYCL2020 specialization constants' handling
+// whenever targets with both native and non-native support are present for the
+// fat binary.