Fixed register allocation on function calls

src/core/CompileCall.go

@@ -3,7 +3,6 @@ package core
 import (
 	"fmt"
 
-	"git.akyoto.dev/cli/q/src/asm"
 	"git.akyoto.dev/cli/q/src/errors"
 	"git.akyoto.dev/cli/q/src/expression"
 	"git.akyoto.dev/cli/q/src/types"
@@ -103,33 +102,6 @@ func (f *Function) CompileCall(root *expression.Expression) (*Function, error) {
 		}
 	}
 
-	for _, register := range f.CPU.Output[:len(fn.Output)] {
-		f.SaveRegister(register)
-	}
-
-	for _, register := range f.CPU.General {
-		if f.RegisterIsUsed(register) {
-			f.Register(asm.PUSH, register)
-		}
-	}
-
-	f.Call(fn.UniqueName)
-
-	for _, register := range registers {
-		if register == f.CPU.Output[0] && root.Parent != nil {
-			continue
-		}
-
-		f.FreeRegister(register)
-	}
-
-	for i := len(f.CPU.General) - 1; i >= 0; i-- {
-		register := f.CPU.General[i]
-
-		if f.RegisterIsUsed(register) {
-			f.Register(asm.POP, register)
-		}
-	}
-
+	f.CallSafe(fn, registers)
 	return fn, nil
 }