ToExtern and WriteRAM call output() automatically to avoid removed by the optimization.

Author: shtaxxx

veriloggen/stream/stypes.py

@@ -3089,6 +3089,8 @@ class ToExtern(_UnaryOperator):
     def __init__(self, right):
         _UnaryOperator.__init__(self, right)
 
+        self.output_tmp()
+
         self.graph_label = 'ToExtern'
         self.graph_shape = 'box'
 
@@ -3263,6 +3265,12 @@ def __init__(self, addr, data, reset, when=None,
 
         _SpecialOperator.__init__(self, *args)
 
+        self.width = 1
+        self.point = 0
+        self.signed = True
+
+        self.output_tmp()
+
         self.graph_label = 'WriteRAM' if ram_name is None else ('WriteRAM\n%s' % ram_name)
         self.graph_shape = 'box'
 

veriloggen/thread/stream.py

@@ -404,9 +404,6 @@ def write_RAM(self, name, addr, data, when=None):
         var.write_ram_sel = self.module.Reg('_%s_write_ram_sel' % prefix,
                                             self.ram_sel_width, initval=0)
 
-        # to avoid to be removed by optimizations
-        self.sink(var, 'dummy_sink_%s' % name)
-
         return var
 
     def set_source(self, fsm, name, ram, offset, size, stride=1, port=0):