sam.hadow/Random-access-machine
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merge instructions

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Sam Hadow
2024-05-13 10:26:13 +02:00
parent f2204df7d7
commit 0c6cf984c9
3 changed files with 43 additions and 1 deletions
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33
src/ram.py
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@@ -185,3 +185,36 @@ class Ram(object):
for instr in new_instr:
print(instr)
self.instr = new_instr
def predecessors(self, node):
graph_edges = self.generate_graph()
return [edge[0] for edge in graph_edges if edge[1] == node]
def merge_instructions(self):
for (n,instr) in enumerate(self.instr):
if instr['op'] == Ram.op and (instr['args'][0] == 'ADD' or instr['args'][0] == 'MULT'):
registry = instr['args'][3]
op = instr['args'][0]
if (instr['args'][1] == registry and instr['args'][2][0] == 'value') or (instr['args'][2] == registry and instr['args'][1][0] == 'value'):
predecessors = self.predecessors(n)
if len(predecessors) == 1:
predecessor_instr = self.instr[predecessors[0]]
if predecessor_instr['op'] == Ram.op:
if op == predecessor_instr['args'][0] and predecessor_instr['args'][1][0] == 'value' and predecessor_instr['args'][2][0] == 'value' and predecessor_instr['args'][3] == registry:
if op == 'ADD':
value_int = predecessor_instr['args'][1][1] + predecessor_instr['args'][2][1]
if instr['args'][1][0] == 'value':
value_int += instr['args'][1][1]
else:
value_int += instr['args'][2][1]
self.instr[n] = {"op": Ram.op, "args": (op, ('value', value_int), ('value', 0), registry)}
elif op == 'MULT':
value_int = predecessor_instr['args'][1][1] * predecessor_instr['args'][2][1]
if instr['args'][1][0] == 'value':
value_int *= instr['args'][1][1]
else:
value_int *= instr['args'][2][1]
self.instr[n] = {"op": Ram.op, "args": (op, ('value', value_int), ('value', 1), registry)}
self.instr.pop(predecessors[0])
for instr in self.instr:
print(instr)