[ref model] fix const/pad/clamp attribute serialization

This changes to use native type serialization and deserialization
for pad_const, clamp min_val/max_val and const data attribute values
whereby fp16 values are stored as 2 bytes each, fp8 values are stored
in 1 byte each, etc.

Signed-off-by: Tai Ly <tai.ly@arm.com>
Change-Id: Ia95d320fe8c546ce1d1ccc035d6e9bcaadcc9ca3

1 files changed, 18 insertions, 17 deletions

diff --git a/verif/generator/tosa_test_gen.py b/verif/generator/tosa_test_gen.py
index c5ac0f9..38ab3f4 100644
--- a/verif/generator/tosa_test_gen.py
+++ b/verif/generator/tosa_test_gen.py
@@ -3,7 +3,6 @@
 import json
 import logging
 import os
-import struct
 from copy import deepcopy
 from datetime import datetime
 from pathlib import Path
@@ -1390,20 +1389,14 @@ class TosaTestGen:
             return None
 
         attr = ts.TosaSerializerAttribute()
-        if a.dtype in (DType.BF16, DType.FP16, DType.FP32):
-            if a.dtype == DType.FP16:
-                # Non-tensor fp16 ops take fp16 values as fp32 in reference_model
-                min_val = min_val.astype(np.float32)
-                max_val = max_val.astype(np.float32)
-            min_val_as_bytes = struct.pack("<f", min_val)
-            max_val_as_bytes = struct.pack("<f", max_val)
-        elif a.dtype in (DType.INT8, DType.INT16):
-            min_val_as_bytes = struct.pack("<i", min_val)
-            max_val_as_bytes = struct.pack("<i", max_val)
-        else:
-            # to avoid internal error for incorrect input types
-            min_val_as_bytes = struct.pack("<i", 0)
-            max_val_as_bytes = struct.pack("<i", 0)
+        min_val_as_bytes = ts.TosaSerializer.convertDataToUint8Vec(a.dtype, [min_val])
+        max_val_as_bytes = ts.TosaSerializer.convertDataToUint8Vec(a.dtype, [max_val])
+
+        # align to 8 bytes
+        while (len(min_val_as_bytes) % 8) != 0:
+            min_val_as_bytes.append(0)
+        while (len(max_val_as_bytes) % 8) != 0:
+            max_val_as_bytes.append(0)
 
         attr.ClampAttribute(self.ser.builder, min_val_as_bytes, max_val_as_bytes)
 
@@ -1550,9 +1543,17 @@ class TosaTestGen:
 
         # get pad_const_val_as_bytes from either pad_const_float or pad_const_int
         if gtu.dtypeIsFloat(a.dtype):
-            pad_const_val_as_bytes = struct.pack("<f", pad_const_float)
+            pad_const_val_as_bytes = ts.TosaSerializer.convertDataToUint8Vec(
+                a.dtype, [pad_const_float]
+            )
         else:
-            pad_const_val_as_bytes = struct.pack("<i", pad_const_int)
+            pad_const_val_as_bytes = ts.TosaSerializer.convertDataToUint8Vec(
+                a.dtype, [pad_const_int]
+            )
+
+        # align to 8 bytes
+        while (len(pad_const_val_as_bytes) % 8) != 0:
+            pad_const_val_as_bytes.append(0)
 
         attr = ts.TosaSerializerAttribute()
         attr.PadAttribute(self.ser.builder, pad_const_val_as_bytes)