lcfOS: python/ppci/ir2tree.py comparison

Half of use of burg spec for arm

comparison

equal deleted inserted replaced

-:8c569fbe60e4
+:44f336460c2a
+from tree import Tree
+from . import ir
+f_map = {}    # Mapping from types to tree creation functions
+def register(tp):
+""" Register a function for type tp """
+def reg_f(f):
+f_map[tp] = f
+return f
+return reg_f
+@register(ir.Binop)
+def binop_to_tree(e):
+names = {'+':'ADDI32', '-':'SUBI32', '|':'ORI32', '<<':'SHLI32',
+'*':'MULI32'}
+op = names[e.operation]
+return Tree(op, makeTree(e.a), makeTree(e.b))
+@register(ir.Temp)
+def temp_to_tree(e):
+t = Tree('REGI32')
+t.value = e
+return t
+@register(ir.Const)
+def const_to_tree(e):
+t = Tree('CONSTI32')
+t.value = e.value
+return t
+@register(ir.Mem)
+def mem_to_tree(e):
+return Tree('MEMI32', makeTree(e.e))
+@register(ir.Call)
+def call_to_tree(e):
+return Tree('CALL')
+def makeTree(ir_node):
+""" Transform an ir node into a tree usable for matching """
+return f_map[type(ir_node)](ir_node)

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