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Commit 23cecaff authored by Jayke Meijer's avatar Jayke Meijer
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Fixed bug in copyprop.

parent cad60b16
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......@@ -211,11 +211,12 @@ def copy_propagation(block):
if moves_to[i] == s[0]:
moves_from[i] = s[1]
break
elif len(s) == 3 and s[0] in moves_to:
# The result gets overwritten, so remove the data from the list.
elif len(s) == 3 and (s[0] in moves_to or s[0] in moves_from):
# One of the registers getss overwritten, so remove the data from
# the list.
i = 0
while i < len(moves_to):
if moves_to[i] == s[0]:
if moves_to[i] == s[0] or moves_to[i] == s[1]:
del moves_to[i]
del moves_from[i]
else:
......
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