hpvm-clang adds no-exceptions by default

hpvm/tools/hpvm-clang/main.py.in

@@ -40,6 +40,9 @@ def compile_hpvm_c(
 ):
     from subprocess import check_output
 
+    # FIXME: Added this because Exceptions are not supported in HPVM.
+    flags = (flags or []) + ["no-exceptions"]
+
     passes = ["LLVMBuildDFG"]
     pass_flags = ["buildDFG"]
     if tensor_target == "tensor":