Fixed incorrect number of history entries

src/asm/CanSkip.go

@@ -2,8 +2,12 @@ package asm
 
 import "git.akyoto.dev/cli/q/src/cpu"
 
-// unnecessary returns true if the register/register operation can be skipped.
-func (a *Assembler) unnecessary(mnemonic Mnemonic, left cpu.Register, right cpu.Register) bool {
+// CanSkip returns true if the register/register operation can be skipped.
+func (a *Assembler) CanSkip(mnemonic Mnemonic, left cpu.Register, right cpu.Register) bool {
+	if mnemonic == MOVE && left == right {
+		return true
+	}
+
 	if len(a.Instructions) == 0 {
 		return false
 	}

src/asm/CanSkipReturn.go

@@ -0,0 +1,16 @@
+package asm
+
+// CanSkipReturn returns true if the return operation can be skipped.
+func (a *Assembler) CanSkipReturn() bool {
+	if len(a.Instructions) == 0 {
+		return false
+	}
+
+	lastMnemonic := a.Instructions[len(a.Instructions)-1].Mnemonic
+
+	if lastMnemonic == RETURN || lastMnemonic == JUMP {
+		return true
+	}
+
+	return false
+}

src/asm/Instructions.go

@@ -32,14 +32,6 @@ func (a *Assembler) DLLCall(name string) {
 
 // Return returns back to the caller.
 func (a *Assembler) Return() {
-	if len(a.Instructions) > 0 {
-		lastMnemonic := a.Instructions[len(a.Instructions)-1].Mnemonic
-
-		if lastMnemonic == RETURN || lastMnemonic == JUMP {
-			return
-		}
-	}
-
 	a.Instructions = append(a.Instructions, Instruction{Mnemonic: RETURN})
 }
 

src/asm/RegisterRegister.go

@@ -19,10 +19,6 @@ func (data *RegisterRegister) String() string {
 
 // RegisterRegister adds an instruction using two registers.
 func (a *Assembler) RegisterRegister(mnemonic Mnemonic, left cpu.Register, right cpu.Register) {
-	if a.unnecessary(mnemonic, left, right) {
-		return
-	}
-
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
 		Data: &RegisterRegister{