[SYCL] Add cm-compiler feature

SYCL/OnlineCompiler/online_compiler_L0.cpp

@@ -1,4 +1,4 @@
-// REQUIRES: level_zero, level_zero_dev_kit
+// REQUIRES: level_zero, level_zero_dev_kit, cm-compiler
 
 // RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple -DRUN_KERNELS %level_zero_options %s -o %t.out
 // RUN: %CPU_RUN_PLACEHOLDER %t.out

SYCL/OnlineCompiler/online_compiler_OpenCL.cpp

@@ -1,4 +1,4 @@
-// REQUIRES: opencl, opencl_icd
+// REQUIRES: opencl, opencl_icd, cm-compiler
 
 // RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple %s -DRUN_KERNELS %opencl_lib -o %t.out
 // RUN: %CPU_RUN_PLACEHOLDER %t.out

SYCL/README.md

@@ -139,6 +139,7 @@ unavailable.
  * **cpu**, **gpu**, **host**, **accelerator** - target device;
  * **cuda**, **hip**, **opencl**, **level_zero** - target backend;
  * **sycl-ls** - sycl-ls tool availability;
+ * **cm-compiler** - C for Metal compiler availability;
  * **cl_options** - CL command line options recognized (or not) by compiler;
  * **opencl_icd** - OpenCL ICD loader availability;
  * **aot_tool** - Ahead-of-time compilation tools availability;

SYCL/lit.cfg.py

@@ -326,6 +326,9 @@
 if find_executable('sycl-ls'):
     config.available_features.add('sycl-ls')
 
+if find_executable('cmc'):
+    config.available_features.add('cm-compiler')
+
 # Device AOT compilation tools aren't part of the SYCL project,
 # so they need to be pre-installed on the machine
 aot_tools = ["ocloc", "aoc", "opencl-aot"]