Don't update BTB when garbage was fetched
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@ -655,7 +655,7 @@ class Control(implicit conf: RocketConfiguration) extends Component
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Mux(!ex_reg_btb_hit, PC_EX, // mispredicted taken branch
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PC_EX4))))) // mispredicted not taken branch
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io.imem.req.bits.mispredict := !take_pc_wb && take_pc_ex
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io.imem.req.bits.mispredict := !take_pc_wb && take_pc_ex && !ex_reg_xcpt
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io.imem.req.bits.taken := !ex_reg_btb_hit || ex_reg_jalr
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io.imem.req.valid := take_pc
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