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module X64Optimiser(x64Optimise) where
import Defs
import X64
x64Optimise :: Asm -> Error Asm
x64Optimise (Asm funcs) = return $ Asm [(name, concat $ map goI inss) | (name, inss) <- funcs]
where
goI :: Ins -> [Ins]
goI (MOV (RegMem a) (RegMem b)) | a == b = []
goI (MOVi (RegMem a) (Imm (XImm 0))) | isXReg a = [XOR (RegMem a) (RegMemImm a)]
goI (MOVi64 (Reg a) (Imm (XImm 0))) = [XOR (RegMem a) (RegMemImm a)]
goI (MOVSX (Reg a) (RegMem b)) | a == b = []
goI ins = [ins]
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