pprInstr (CALL (Left imm) _) = (<>) (ptext (sLit "\tcall ")) (pprImm imm)
pprInstr (CALL (Right reg) _) = (<>) (ptext (sLit "\tcall *")) (pprReg archWordSize reg)
pprInstr (CALL (Left imm) _) = (<>) (ptext (sLit "\tcall ")) (pprImm imm)
pprInstr (CALL (Right reg) _) = (<>) (ptext (sLit "\tcall *")) (pprReg archWordSize reg)