Lower branch cycles to two.

src/main/scala/EXBarrier.scala

@@ -11,7 +11,6 @@ class EXBarrierIO extends Bundle {
   val writeEnable = Bool()
   val memRead = Bool()
   val memWrite = Bool()
-  val branch = Bool()
   val jump = Bool()
 }
 
@@ -21,11 +20,16 @@ class EXBarrier extends MultiIOModule {
       val in = Input(new EXBarrierIO)
       val out = Output(new EXBarrierIO)
       val flush = Output(Bool())
+      val branchAddr = Output(UInt(32.W))
+      val branchIn = Input(Bool())
+      val branchOut = Output(Bool())
     })
 
   val delay = Reg(new EXBarrierIO)
   delay := io.in
   io.out := delay
 
-  io.flush := io.in.branch
+  io.flush := io.branchIn
+  io.branchOut := io.branchIn
+  io.branchAddr := io.in.ALUResult
 }