Replace node level check ASSERT_MSG_NODE()/FATAL_ERROR_NODE() with REQUIRE() or ERROR_IF()

- Adding return code enum class: {VALID, UNPREDICTABLE, ERROR}
- Runtime errors (e.g. memory allocation failure) will abort immediately, or will return one of the three return codes
  Part of the codes are re-written to pass REQUIRE() to the top-level (e.g. apply_scale_32/16())
- Update setExpectedFailure() to setExpectedReturnCode() on test generation script
- Update test regression script to interface with reference model change

Signed-off-by: Kevin Cheng <kevin.cheng@arm.com>
Change-Id: Ia063c936bcb2a54d6e379a5bb6801aa72d1186f1
diff --git a/reference_model/src/ops/activation_funcs.h b/reference_model/src/ops/activation_funcs.h
index b051b9d..c834b52 100644
--- a/reference_model/src/ops/activation_funcs.h
+++ b/reference_model/src/ops/activation_funcs.h
@@ -28,8 +28,8 @@
 class OpClamp : public UnaryNode<Rank, Dtype>
 {
 public:
-    OpClamp(TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
-        : UnaryNode<Rank, Dtype>(Op_CLAMP, id_)
+    OpClamp(SubgraphTraverser* sgt_, TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
+        : UnaryNode<Rank, Dtype>(sgt_, Op_CLAMP, id_)
     {
         INIT_ATTRIBUTE(Clamp);
         register_fcn();
@@ -48,8 +48,8 @@
 class OpReluN : public UnaryNode<Rank, Dtype>
 {
 public:
-    OpReluN(TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
-        : UnaryNode<Rank, Dtype>(Op_RELUN, id_)
+    OpReluN(SubgraphTraverser* sgt_, TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
+        : UnaryNode<Rank, Dtype>(sgt_, Op_RELUN, id_)
     {
         INIT_ATTRIBUTE(ReluN);
         register_fcn();
@@ -68,8 +68,8 @@
 class OpSigmoid : public UnaryNode<Rank, Dtype>
 {
 public:
-    OpSigmoid(TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
-        : UnaryNode<Rank, Dtype>(Op_SIGMOID, id_)
+    OpSigmoid(SubgraphTraverser* sgt_, TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
+        : UnaryNode<Rank, Dtype>(sgt_, Op_SIGMOID, id_)
     {
         register_fcn();
     }
@@ -84,8 +84,8 @@
 class OpTanh : public UnaryNode<Rank, Dtype>
 {
 public:
-    OpTanh(TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
-        : UnaryNode<Rank, Dtype>(Op_TANH, id_)
+    OpTanh(SubgraphTraverser* sgt_, TosaAttributeBase* attribute_, TosaQuantInfoBase* qinfo_, uint64_t id_)
+        : UnaryNode<Rank, Dtype>(sgt_, Op_TANH, id_)
     {
         register_fcn();
     }