XFAIL/UNSUPPORTED update - esimd_merge.cpp, preemption.cpp, simd_subscript_operator.cpp

- esimd_merge.cpp - XFAIL for explicit failure

- preemption.cpp - UNSUPPORTED as the test consists of empty kernel
and looks for 'preemption' compilation switch from IGC dump which is
not generated under esimd_emulator

- simd_subscript_operator.cpp - test passes as there is no arithmetic
operation for 'half' type while memory intrinsic is fully supported

Author: dongkyunahn-intel

SYCL/ESIMD/api/esimd_merge.cpp

@@ -8,8 +8,7 @@
 // REQUIRES: gpu
 // UNSUPPORTED: cuda || hip
 // TODO: esimd_emulator fails due to SEGFAULT error from __esimd_svm_scatter
-//       Marked as 'UNSUPPORTED' as test is stuck at SEGFAULT exception
-// UNSUPPORTED: esimd_emulator
+// XFAIL: esimd_emulator
 // RUN: %clangxx -fsycl %s -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out
 

SYCL/ESIMD/api/simd_subscript_operator.cpp

@@ -7,8 +7,6 @@
 //===----------------------------------------------------------------------===//
 // REQUIRES: gpu
 // UNSUPPORTED: cuda || hip
-// TODO: esimd_emulator fails due to unimplemented 'half' type
-// XFAIL: esimd_emulator
 // RUN: %clangxx -fsycl %s -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out
 //

SYCL/ESIMD/preemption.cpp

@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 // REQUIRES: gpu && linux
 // UNSUPPORTED: cuda || hip
+// UNSUPPORTED: esimd_emulator
 // RUN: %clangxx -fsycl %s -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER IGC_DumpToCustomDir=%t.dump IGC_ShaderDumpEnable=1 %t.out
 // RUN: grep enablePreemption %t.dump/*.asm