[SYCL-MLIR] Turn off warnings (#1605)

Signed-off-by: Tsang, Whitney <[email protected]>

Author: whitneywhtsang

SYCL/lit.cfg.py

@@ -388,11 +388,11 @@
     config.recursiveExpansionLimit = 10
 
 if config.sycl_be == 'ext_oneapi_cuda' or (config.sycl_be == 'ext_oneapi_hip' and config.hip_platform == 'NVIDIA'):
-    config.substitutions.append( ('%sycl_triple',  "nvptx64-nvidia-cuda-syclmlir" ) )
+    config.substitutions.append( ('%sycl_triple',  "nvptx64-nvidia-cuda-syclmlir -w" ) )
 elif config.sycl_be == 'ext_oneapi_hip' and config.hip_platform == 'AMD':
-    config.substitutions.append( ('%sycl_triple',  "amdgcn-amd-amdhsa-syclmlir" ) )
+    config.substitutions.append( ('%sycl_triple',  "amdgcn-amd-amdhsa-syclmlir -w" ) )
 else:
-    config.substitutions.append( ('%sycl_triple',  "spir64-unknown-unknown-syclmlir" ) )
+    config.substitutions.append( ('%sycl_triple',  "spir64-unknown-unknown-syclmlir -w" ) )
 
 if find_executable('sycl-ls'):
     config.available_features.add('sycl-ls')