Simplified file structure

src/register/SaveRegister.go

@@ -0,0 +1,29 @@
+package register
+
+import (
+	"slices"
+
+	"git.akyoto.dev/cli/q/src/asm"
+	"git.akyoto.dev/cli/q/src/cpu"
+)
+
+// SaveRegister attempts to move a variable occupying this register to another register.
+func (f *Machine) SaveRegister(register cpu.Register) {
+	if !f.RegisterIsUsed(register) {
+		return
+	}
+
+	if slices.Contains(f.CPU.General, register) {
+		return
+	}
+
+	variable := f.VariableByRegister(register)
+
+	if variable == nil || variable.Alive == 0 {
+		return
+	}
+
+	newRegister := f.NewRegister()
+	f.RegisterRegister(asm.MOVE, newRegister, register)
+	variable.Register = newRegister
+}