Mercurial > lcfOS

comparison python/ppci/codegen/canon.py @ 364:c49459768aaa

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Work on globals
author Windel Bouwman
date Wed, 19 Mar 2014 20:24:03 +0100
parents 5477e499b039
children 988f3fb861e4
comparison
equal deleted inserted replaced
363:396e5cefba13 364:c49459768aaa
59 elif isinstance(exp, ir.Parameter): 59 elif isinstance(exp, ir.Parameter):
60 return frame.parMap[exp] 60 return frame.parMap[exp]
61 elif isinstance(exp, ir.LocalVariable): 61 elif isinstance(exp, ir.LocalVariable):
62 offset = frame.allocVar(exp) 62 offset = frame.allocVar(exp)
63 return ir.Add(frame.fp, ir.Const(offset)) 63 return ir.Add(frame.fp, ir.Const(offset))
64 elif isinstance(exp, ir.GlobalVariable):
65 #frame.load_global_address(ir.label_name(exp))
66 return exp
64 elif isinstance(exp, ir.Mem): 67 elif isinstance(exp, ir.Mem):
65 exp.e = rewriteExp(exp.e, frame) 68 exp.e = rewriteExp(exp.e, frame)
66 return exp 69 return exp
67 elif isinstance(exp, ir.Addr): 70 elif isinstance(exp, ir.Addr):
68 exp.e = rewriteExp(exp.e, frame) 71 exp.e = rewriteExp(exp.e, frame)
72 # Rewrite call into eseq: 75 # Rewrite call into eseq:
73 t = newTemp() 76 t = newTemp()
74 return ir.Eseq(ir.Move(t, exp), t) 77 return ir.Eseq(ir.Move(t, exp), t)
75 else: 78 else:
76 raise NotImplementedError('NI: {}, {}'.format(exp, type(exp))) 79 raise NotImplementedError('NI: {}, {}'.format(exp, type(exp)))
77 80
78 # The flatten functions pull out seq instructions to the sequence list. 81 # The flatten functions pull out seq instructions to the sequence list.
79 82
80 def flattenExp(exp): 83 def flattenExp(exp):
81 if isinstance(exp, ir.Binop): 84 if isinstance(exp, ir.Binop):
82 exp.a, sa = flattenExp(exp.a) 85 exp.a, sa = flattenExp(exp.a)
87 elif isinstance(exp, ir.Const): 90 elif isinstance(exp, ir.Const):
88 return exp, [] 91 return exp, []
89 elif isinstance(exp, ir.Mem): 92 elif isinstance(exp, ir.Mem):
90 exp.e, s = flattenExp(exp.e) 93 exp.e, s = flattenExp(exp.e)
91 return exp, s 94 return exp, s
95 elif isinstance(exp, ir.GlobalVariable):
96 return exp, []
92 elif isinstance(exp, ir.Addr): 97 elif isinstance(exp, ir.Addr):
93 exp.e, s = flattenExp(exp.e) 98 exp.e, s = flattenExp(exp.e)
94 return exp, s 99 return exp, s
95 elif isinstance(exp, ir.Eseq): 100 elif isinstance(exp, ir.Eseq):
96 s = flattenStmt(exp.stmt) 101 s = flattenStmt(exp.stmt)