Improved assembler performance

src/asm/Assembler.go

@@ -1,28 +1,10 @@
 package asm
 
-import (
+import "git.urbach.dev/cli/q/src/data"
-	"maps"
-
-	"git.urbach.dev/cli/q/src/data"
-)
 
 // Assembler contains a list of instructions.
 type Assembler struct {
 	Data         data.Data
 	Instructions []Instruction
-}
+	Param        Param
-
-// Merge combines the contents of this assembler with another one.
-func (a *Assembler) Merge(b Assembler) {
-	maps.Copy(a.Data, b.Data)
-	a.Instructions = append(a.Instructions, b.Instructions...)
-}
-
-// SetData sets the data for the given label.
-func (a *Assembler) SetData(label string, bytes []byte) {
-	if a.Data == nil {
-		a.Data = data.Data{}
-	}
-
-	a.Data.Insert(label, bytes)
 }

src/asm/CanSkip.go

@@ -15,12 +15,12 @@ func (a *Assembler) CanSkip(mnemonic Mnemonic, left cpu.Register, right cpu.Regi
 	last := a.Instructions[len(a.Instructions)-1]
 
 	if mnemonic == MOVE && last.Mnemonic == MOVE {
-		lastData, isRegReg := last.Data.(*RegisterRegister)
+		if last.Type != TypeRegisterRegister {
-
-		if !isRegReg {
 			return false
 		}
 
+		lastData := a.Param.RegisterRegister[last.Index]
+
 		if lastData.Destination == right && lastData.Source == left {
 			return true
 		}

src/asm/CanSkipReturn.go

@@ -12,10 +12,10 @@ func (a *Assembler) CanSkipReturn() bool {
 		return true
 	}
 
-	if last.Mnemonic == CALL {
+	if last.Mnemonic == CALL && last.Type == TypeLabel {
-		label, isLabel := last.Data.(*Label)
+		label := a.Param.Label[last.Index]
 
-		if isLabel && label.String() == "core.exit" {
+		if label.String() == "core.exit" {
 			return true
 		}
 	}

src/asm/DataString.go

@@ -0,0 +1,28 @@
+package asm
+
+func (x Instruction) DataString(a *Assembler) string {
+	switch x.Type {
+	case TypeLabel:
+		return a.Param.Label[x.Index].String()
+	case TypeNumber:
+		return a.Param.Number[x.Index].String()
+	case TypeRegister:
+		return a.Param.Register[x.Index].String()
+	case TypeRegisterLabel:
+		return a.Param.RegisterLabel[x.Index].String()
+	case TypeRegisterNumber:
+		return a.Param.RegisterNumber[x.Index].String()
+	case TypeRegisterRegister:
+		return a.Param.RegisterRegister[x.Index].String()
+	case TypeMemory:
+		return a.Param.Memory[x.Index].String()
+	case TypeMemoryLabel:
+		return a.Param.MemoryLabel[x.Index].String()
+	case TypeMemoryNumber:
+		return a.Param.MemoryNumber[x.Index].String()
+	case TypeMemoryRegister:
+		return a.Param.MemoryRegister[x.Index].String()
+	default:
+		return ""
+	}
+}

src/asm/Index.go

@@ -0,0 +1,3 @@
+package asm
+
+type Index = uint16

src/asm/Instruction.go

@@ -1,9 +1,8 @@
 package asm
 
-import "fmt"
-
 // Instruction represents a single instruction which can be converted to machine code.
 type Instruction struct {
-	Data     fmt.Stringer
 	Mnemonic Mnemonic
+	Type     Type
+	Index    Index
 }

src/asm/Instructions.go

@@ -2,22 +2,12 @@ package asm
 
 // Comment adds a comment at the current position.
 func (a *Assembler) Comment(text string) {
-	a.Instructions = append(a.Instructions, Instruction{
+	a.Label(COMMENT, text)
-		Mnemonic: COMMENT,
-		Data: &Label{
-			Name: text,
-		},
-	})
 }
 
 // DLLCall calls a function in a DLL file.
 func (a *Assembler) DLLCall(name string) {
-	a.Instructions = append(a.Instructions, Instruction{
+	a.Label(DLLCALL, name)
-		Mnemonic: DLLCALL,
-		Data: &Label{
-			Name: name,
-		},
-	})
 }
 
 // Return returns back to the caller.

src/asm/Label.go

@@ -14,8 +14,11 @@ func (data *Label) String() string {
 func (a *Assembler) Label(mnemonic Mnemonic, name string) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &Label{
+		Type:     TypeLabel,
+		Index:    Index(len(a.Param.Label)),
+	})
+
+	a.Param.Label = append(a.Param.Label, Label{
 		Name: name,
-		},
 	})
 }

src/asm/Memory.go

@@ -56,6 +56,9 @@ func (mem *Memory) String() string {
 func (a *Assembler) Memory(mnemonic Mnemonic, address Memory) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data:     &address,
+		Type:     TypeMemory,
+		Index:    Index(len(a.Param.Memory)),
 	})
+
+	a.Param.Memory = append(a.Param.Memory, address)
 }

src/asm/MemoryLabel.go

@@ -15,9 +15,12 @@ func (data *MemoryLabel) String() string {
 func (a *Assembler) MemoryLabel(mnemonic Mnemonic, address Memory, label string) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &MemoryLabel{
+		Type:     TypeMemoryLabel,
+		Index:    Index(len(a.Param.MemoryLabel)),
+	})
+
+	a.Param.MemoryLabel = append(a.Param.MemoryLabel, MemoryLabel{
 		Address: address,
 		Label:   label,
-		},
 	})
 }

src/asm/MemoryNumber.go

@@ -17,9 +17,12 @@ func (data *MemoryNumber) String() string {
 func (a *Assembler) MemoryNumber(mnemonic Mnemonic, address Memory, number int) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &MemoryNumber{
+		Type:     TypeMemoryNumber,
+		Index:    Index(len(a.Param.MemoryNumber)),
+	})
+
+	a.Param.MemoryNumber = append(a.Param.MemoryNumber, MemoryNumber{
 		Address: address,
 		Number:  number,
-		},
 	})
 }

src/asm/MemoryRegister.go

@@ -21,9 +21,12 @@ func (data *MemoryRegister) String() string {
 func (a *Assembler) MemoryRegister(mnemonic Mnemonic, address Memory, register cpu.Register) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &MemoryRegister{
+		Type:     TypeMemoryRegister,
+		Index:    Index(len(a.Param.MemoryRegister)),
+	})
+
+	a.Param.MemoryRegister = append(a.Param.MemoryRegister, MemoryRegister{
 		Address:  address,
 		Register: register,
-		},
 	})
 }

src/asm/Merge.go

@@ -0,0 +1,46 @@
+package asm
+
+import "maps"
+
+// Merge combines the contents of this assembler with another one.
+func (a *Assembler) Merge(b *Assembler) {
+	maps.Copy(a.Data, b.Data)
+	from := len(a.Instructions)
+	a.Instructions = append(a.Instructions, b.Instructions...)
+
+	for i := from; i < len(a.Instructions); i++ {
+		switch a.Instructions[i].Type {
+		case TypeLabel:
+			a.Instructions[i].Index += Index(len(a.Param.Label))
+		case TypeNumber:
+			a.Instructions[i].Index += Index(len(a.Param.Number))
+		case TypeRegister:
+			a.Instructions[i].Index += Index(len(a.Param.Register))
+		case TypeRegisterLabel:
+			a.Instructions[i].Index += Index(len(a.Param.RegisterLabel))
+		case TypeRegisterNumber:
+			a.Instructions[i].Index += Index(len(a.Param.RegisterNumber))
+		case TypeRegisterRegister:
+			a.Instructions[i].Index += Index(len(a.Param.RegisterRegister))
+		case TypeMemory:
+			a.Instructions[i].Index += Index(len(a.Param.Memory))
+		case TypeMemoryLabel:
+			a.Instructions[i].Index += Index(len(a.Param.MemoryLabel))
+		case TypeMemoryNumber:
+			a.Instructions[i].Index += Index(len(a.Param.MemoryNumber))
+		case TypeMemoryRegister:
+			a.Instructions[i].Index += Index(len(a.Param.MemoryRegister))
+		}
+	}
+
+	a.Param.Label = append(a.Param.Label, b.Param.Label...)
+	a.Param.Number = append(a.Param.Number, b.Param.Number...)
+	a.Param.Register = append(a.Param.Register, b.Param.Register...)
+	a.Param.RegisterLabel = append(a.Param.RegisterLabel, b.Param.RegisterLabel...)
+	a.Param.RegisterNumber = append(a.Param.RegisterNumber, b.Param.RegisterNumber...)
+	a.Param.RegisterRegister = append(a.Param.RegisterRegister, b.Param.RegisterRegister...)
+	a.Param.Memory = append(a.Param.Memory, b.Param.Memory...)
+	a.Param.MemoryLabel = append(a.Param.MemoryLabel, b.Param.MemoryLabel...)
+	a.Param.MemoryNumber = append(a.Param.MemoryNumber, b.Param.MemoryNumber...)
+	a.Param.MemoryRegister = append(a.Param.MemoryRegister, b.Param.MemoryRegister...)
+}

src/asm/Number.go

@@ -18,8 +18,11 @@ func (data *Number) String() string {
 func (a *Assembler) Number(mnemonic Mnemonic, number int) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &Number{
+		Type:     TypeNumber,
+		Index:    Index(len(a.Param.Number)),
+	})
+
+	a.Param.Number = append(a.Param.Number, Number{
 		Number: number,
-		},
 	})
 }

src/asm/Param.go

@@ -0,0 +1,15 @@
+package asm
+
+// Param stores all the parameters for the instructions.
+type Param struct {
+	Label            []Label
+	Number           []Number
+	Register         []Register
+	RegisterLabel    []RegisterLabel
+	RegisterNumber   []RegisterNumber
+	RegisterRegister []RegisterRegister
+	Memory           []Memory
+	MemoryLabel      []MemoryLabel
+	MemoryNumber     []MemoryNumber
+	MemoryRegister   []MemoryRegister
+}

src/asm/Register.go

@@ -18,8 +18,11 @@ func (data *Register) String() string {
 func (a *Assembler) Register(mnemonic Mnemonic, register cpu.Register) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &Register{
+		Type:     TypeRegister,
+		Index:    Index(len(a.Param.Register)),
+	})
+
+	a.Param.Register = append(a.Param.Register, Register{
 		Register: register,
-		},
 	})
 }

src/asm/RegisterLabel.go

@@ -18,12 +18,15 @@ func (data *RegisterLabel) String() string {
 }
 
 // RegisterLabel adds an instruction with a register and a label.
-func (a *Assembler) RegisterLabel(mnemonic Mnemonic, reg cpu.Register, label string) {
+func (a *Assembler) RegisterLabel(mnemonic Mnemonic, register cpu.Register, label string) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &RegisterLabel{
+		Type:     TypeRegisterLabel,
-			Register: reg,
+		Index:    Index(len(a.Param.RegisterLabel)),
+	})
+
+	a.Param.RegisterLabel = append(a.Param.RegisterLabel, RegisterLabel{
+		Register: register,
 		Label:    label,
-		},
 	})
 }

src/asm/RegisterNumber.go

@@ -18,12 +18,15 @@ func (data *RegisterNumber) String() string {
 }
 
 // RegisterNumber adds an instruction with a register and a number.
-func (a *Assembler) RegisterNumber(mnemonic Mnemonic, reg cpu.Register, number int) {
+func (a *Assembler) RegisterNumber(mnemonic Mnemonic, register cpu.Register, number int) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &RegisterNumber{
+		Type:     TypeRegisterNumber,
-			Register: reg,
+		Index:    Index(len(a.Param.RegisterNumber)),
+	})
+
+	a.Param.RegisterNumber = append(a.Param.RegisterNumber, RegisterNumber{
+		Register: register,
 		Number:   number,
-		},
 	})
 }

src/asm/RegisterRegister.go

@@ -21,9 +21,12 @@ func (data *RegisterRegister) String() string {
 func (a *Assembler) RegisterRegister(mnemonic Mnemonic, left cpu.Register, right cpu.Register) {
 	a.Instructions = append(a.Instructions, Instruction{
 		Mnemonic: mnemonic,
-		Data: &RegisterRegister{
+		Type:     TypeRegisterRegister,
+		Index:    Index(len(a.Param.RegisterRegister)),
+	})
+
+	a.Param.RegisterRegister = append(a.Param.RegisterRegister, RegisterRegister{
 		Destination: left,
 		Source:      right,
-		},
 	})
 }

src/asm/SetData.go

@@ -0,0 +1,12 @@
+package asm
+
+import "git.urbach.dev/cli/q/src/data"
+
+// SetData sets the data for the given label.
+func (a *Assembler) SetData(label string, bytes []byte) {
+	if a.Data == nil {
+		a.Data = data.Data{}
+	}
+
+	a.Data.Insert(label, bytes)
+}

src/asm/Type.go

@@ -0,0 +1,17 @@
+package asm
+
+type Type uint8
+
+const (
+	TypeNone Type = iota
+	TypeLabel
+	TypeNumber
+	TypeRegister
+	TypeRegisterLabel
+	TypeRegisterNumber
+	TypeRegisterRegister
+	TypeMemory
+	TypeMemoryLabel
+	TypeMemoryNumber
+	TypeMemoryRegister
+)

src/asm/bench_test.go

@@ -0,0 +1,36 @@
+package asm_test
+
+import (
+	"testing"
+
+	"git.urbach.dev/cli/q/src/asm"
+)
+
+func BenchmarkMerge(b *testing.B) {
+	n := 100
+	all := make([]*asm.Assembler, 0, n)
+
+	for range n {
+		f := &asm.Assembler{}
+		f.Number(asm.PUSH, 1)
+		f.Number(asm.PUSH, 2)
+		f.Number(asm.PUSH, 3)
+		all = append(all, f)
+	}
+
+	for b.Loop() {
+		final := asm.Assembler{}
+
+		for _, f := range all {
+			final.Merge(f)
+		}
+	}
+}
+
+func BenchmarkNumber(b *testing.B) {
+	a := asm.Assembler{}
+
+	for b.Loop() {
+		a.Number(asm.PUSH, 42)
+	}
+}

src/asmc/Finalize.go

@@ -7,7 +7,7 @@ import (
 )
 
 // Finalize generates the final machine code.
-func Finalize(a asm.Assembler, dlls dll.List) ([]byte, []byte) {
+func Finalize(a *asm.Assembler, dlls dll.List) ([]byte, []byte) {
 	data, dataLabels := a.Data.Finalize()
 
 	if config.TargetOS == config.Windows && len(data) == 0 {
@@ -15,6 +15,7 @@ func Finalize(a asm.Assembler, dlls dll.List) ([]byte, []byte) {
 	}
 
 	c := compiler{
+		assembler:    a,
 		code:         make([]byte, 0, len(a.Instructions)*8),
 		codeLabels:   make(map[string]Address, 32),
 		codePointers: make([]*pointer, 0, len(a.Instructions)*8),

src/asmc/call.go

@@ -8,8 +8,9 @@ import (
 )
 
 func (c *compiler) call(x asm.Instruction) {
-	switch data := x.Data.(type) {
+	switch x.Type {
-	case *asm.Label:
+	case asm.TypeLabel:
+		data := c.assembler.Param.Label[x.Index]
 		c.code = x86.Call(c.code, 0x00_00_00_00)
 		size := 4
 
@@ -32,10 +33,12 @@ func (c *compiler) call(x asm.Instruction) {
 
 		c.codePointers = append(c.codePointers, pointer)
 
-	case *asm.Register:
+	case asm.TypeRegister:
+		data := c.assembler.Param.Register[x.Index]
 		c.code = x86.CallRegister(c.code, data.Register)
 
-	case *asm.Memory:
+	case asm.TypeMemory:
+		data := c.assembler.Param.Memory[x.Index]
 		c.code = x86.CallAtMemory(c.code, data.Base, data.Offset)
 	}
 }

src/asmc/compileARM.go

@@ -13,8 +13,9 @@ import (
 func (c *compiler) compileARM(x asm.Instruction) {
 	switch x.Mnemonic {
 	case asm.CALL:
-		switch data := x.Data.(type) {
+		switch x.Type {
-		case *asm.Label:
+		case asm.TypeLabel:
+			label := c.assembler.Param.Label[x.Index]
 			position := Address(len(c.code))
 			c.append(arm.Call(0))
 
@@ -25,10 +26,10 @@ func (c *compiler) compileARM(x asm.Instruction) {
 			}
 
 			pointer.Resolve = func() Address {
-				destination, exists := c.codeLabels[data.Name]
+				destination, exists := c.codeLabels[label.Name]
 
 				if !exists {
-					panic(fmt.Sprintf("unknown jump label %s", data.Name))
+					panic(fmt.Sprintf("unknown jump label %s", label.Name))
 				}
 
 				distance := (destination - position) / 4
@@ -39,13 +40,16 @@ func (c *compiler) compileARM(x asm.Instruction) {
 		}
 
 	case asm.LABEL:
-		c.codeLabels[x.Data.(*asm.Label).Name] = Address(len(c.code))
+		label := c.assembler.Param.Label[x.Index]
+		c.codeLabels[label.Name] = Address(len(c.code))
 		c.append(0xa9be7bfd)
 		c.append(0x910003fd)
 
 	case asm.LOAD:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.MemoryRegister:
+		case asm.TypeMemoryRegister:
+			operands := c.assembler.Param.MemoryRegister[x.Index]
+
 			if operands.Address.OffsetRegister == math.MaxUint8 {
 				c.append(arm.LoadRegister(operands.Register, operands.Address.Base, int16(operands.Address.Offset), operands.Address.Length))
 			} else {
@@ -55,14 +59,17 @@ func (c *compiler) compileARM(x asm.Instruction) {
 		}
 
 	case asm.MOVE:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.append(arm.MoveRegisterRegister(operands.Destination, operands.Source))
 
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.append(arm.MoveRegisterNumber(operands.Register, operands.Number))
 
-		case *asm.RegisterLabel:
+		case asm.TypeRegisterLabel:
+			operands := c.assembler.Param.RegisterLabel[x.Index]
 			position := Address(len(c.code))
 			c.append(arm.LoadAddress(operands.Register, 0))
 

src/asmc/compileX86.go

@@ -8,40 +8,49 @@ import (
 func (c *compiler) compileX86(x asm.Instruction) {
 	switch x.Mnemonic {
 	case asm.ADD:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.AddRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.AddRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 
 	case asm.AND:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.AndRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.AndRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 
 	case asm.SUB:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.SubRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.SubRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 
 	case asm.MUL:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.MulRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.MulRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 
 	case asm.DIV:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			if operands.Destination != x86.RAX {
 				c.code = x86.MoveRegisterRegister(c.code, x86.RAX, operands.Destination)
 			}
@@ -55,8 +64,9 @@ func (c *compiler) compileX86(x asm.Instruction) {
 		}
 
 	case asm.MODULO:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			if operands.Destination != x86.RAX {
 				c.code = x86.MoveRegisterRegister(c.code, x86.RAX, operands.Destination)
 			}
@@ -76,10 +86,12 @@ func (c *compiler) compileX86(x asm.Instruction) {
 		return
 
 	case asm.COMPARE:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.CompareRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.CompareRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 
@@ -90,7 +102,7 @@ func (c *compiler) compileX86(x asm.Instruction) {
 		c.jump(x)
 
 	case asm.LABEL:
-		label := x.Data.(*asm.Label)
+		label := c.assembler.Param.Label[x.Index]
 		c.codeLabels[label.Name] = Address(len(c.code))
 
 	case asm.LOAD:
@@ -100,30 +112,36 @@ func (c *compiler) compileX86(x asm.Instruction) {
 		c.move(x)
 
 	case asm.NEGATE:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.Register:
+		case asm.TypeRegister:
+			operands := c.assembler.Param.Register[x.Index]
 			c.code = x86.NegateRegister(c.code, operands.Register)
 		}
 
 	case asm.OR:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.OrRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.OrRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 
 	case asm.POP:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.Register:
+		case asm.TypeRegister:
+			operands := c.assembler.Param.Register[x.Index]
 			c.code = x86.PopRegister(c.code, operands.Register)
 		}
 
 	case asm.PUSH:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.Number:
+		case asm.TypeNumber:
+			operands := c.assembler.Param.Number[x.Index]
 			c.code = x86.PushNumber(c.code, int32(operands.Number))
-		case *asm.Register:
+		case asm.TypeRegister:
+			operands := c.assembler.Param.Register[x.Index]
 			c.code = x86.PushRegister(c.code, operands.Register)
 		}
 
@@ -131,14 +149,16 @@ func (c *compiler) compileX86(x asm.Instruction) {
 		c.code = x86.Return(c.code)
 
 	case asm.SHIFTL:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.ShiftLeftNumber(c.code, operands.Register, byte(operands.Number)&0b111111)
 		}
 
 	case asm.SHIFTRS:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.ShiftRightSignedNumber(c.code, operands.Register, byte(operands.Number)&0b111111)
 		}
 
@@ -149,10 +169,12 @@ func (c *compiler) compileX86(x asm.Instruction) {
 		c.code = x86.Syscall(c.code)
 
 	case asm.XOR:
-		switch operands := x.Data.(type) {
+		switch x.Type {
-		case *asm.RegisterNumber:
+		case asm.TypeRegisterNumber:
+			operands := c.assembler.Param.RegisterNumber[x.Index]
 			c.code = x86.XorRegisterNumber(c.code, operands.Register, operands.Number)
-		case *asm.RegisterRegister:
+		case asm.TypeRegisterRegister:
+			operands := c.assembler.Param.RegisterRegister[x.Index]
 			c.code = x86.XorRegisterRegister(c.code, operands.Destination, operands.Source)
 		}
 

src/asmc/compiler.go

@@ -1,8 +1,12 @@
 package asmc
 
-import "git.urbach.dev/cli/q/src/dll"
+import (
+	"git.urbach.dev/cli/q/src/asm"
+	"git.urbach.dev/cli/q/src/dll"
+)
 
 type compiler struct {
+	assembler    *asm.Assembler
 	code         []byte
 	data         []byte
 	codeLabels   map[string]Address

src/asmc/dllCall.go

@@ -8,10 +8,10 @@ import (
 )
 
 func (c *compiler) dllCall(x asm.Instruction) {
+	label := c.assembler.Param.Label[x.Index]
 	c.code = x86.CallAt(c.code, 0x00_00_00_00)
 	next := Address(len(c.code))
 	position := next - 4
-	label := x.Data.(*asm.Label)
 
 	pointer := &pointer{
 		Position: Address(position),

src/asmc/jump.go

@@ -25,8 +25,8 @@ func (c *compiler) jump(x asm.Instruction) {
 		c.code = x86.Jump8(c.code, 0x00)
 	}
 
+	label := c.assembler.Param.Label[x.Index]
 	size := 1
-	label := x.Data.(*asm.Label)
 
 	pointer := &pointer{
 		Position: Address(len(c.code) - size),

src/asmc/load.go

@@ -8,8 +8,10 @@ import (
 )
 
 func (c *compiler) load(x asm.Instruction) {
-	switch operands := x.Data.(type) {
+	switch x.Type {
-	case *asm.MemoryRegister:
+	case asm.TypeMemoryRegister:
+		operands := c.assembler.Param.MemoryRegister[x.Index]
+
 		if operands.Address.OffsetRegister == math.MaxUint8 {
 			c.code = x86.LoadRegister(c.code, operands.Register, operands.Address.Base, operands.Address.Offset, operands.Address.Length)
 		} else {

src/asmc/move.go

@@ -8,14 +8,17 @@ import (
 )
 
 func (c *compiler) move(x asm.Instruction) {
-	switch operands := x.Data.(type) {
+	switch x.Type {
-	case *asm.RegisterNumber:
+	case asm.TypeRegisterNumber:
+		operands := c.assembler.Param.RegisterNumber[x.Index]
 		c.code = x86.MoveRegisterNumber(c.code, operands.Register, operands.Number)
 
-	case *asm.RegisterRegister:
+	case asm.TypeRegisterRegister:
+		operands := c.assembler.Param.RegisterRegister[x.Index]
 		c.code = x86.MoveRegisterRegister(c.code, operands.Destination, operands.Source)
 
-	case *asm.RegisterLabel:
+	case asm.TypeRegisterLabel:
+		operands := c.assembler.Param.RegisterLabel[x.Index]
 		start := Address(len(c.code))
 		c.code = x86.LoadAddress(c.code, operands.Register, 0x00_00_00_00)
 		end := Address(len(c.code))

src/asmc/store.go

@@ -9,14 +9,17 @@ import (
 )
 
 func (c *compiler) store(x asm.Instruction) {
-	switch operands := x.Data.(type) {
+	switch x.Type {
-	case *asm.MemoryNumber:
+	case asm.TypeMemoryNumber:
+		operands := c.assembler.Param.MemoryNumber[x.Index]
+
 		if operands.Address.OffsetRegister == math.MaxUint8 {
 			c.code = x86.StoreNumber(c.code, operands.Address.Base, operands.Address.Offset, operands.Address.Length, operands.Number)
 		} else {
 			c.code = x86.StoreDynamicNumber(c.code, operands.Address.Base, operands.Address.OffsetRegister, operands.Address.Length, operands.Number)
 		}
-	case *asm.MemoryLabel:
+	case asm.TypeMemoryLabel:
+		operands := c.assembler.Param.MemoryLabel[x.Index]
 		start := len(c.code)
 
 		if operands.Address.OffsetRegister == math.MaxUint8 {
@@ -27,14 +30,13 @@ func (c *compiler) store(x asm.Instruction) {
 
 		size := 4
 		opSize := len(c.code) - size - start
-		memLabel := x.Data.(*asm.MemoryLabel)
 
 		c.codePointers = append(c.codePointers, &pointer{
 			Position: Address(len(c.code) - size),
 			OpSize:   uint8(opSize),
 			Size:     uint8(size),
 			Resolve: func() Address {
-				destination, exists := c.codeLabels[memLabel.Label]
+				destination, exists := c.codeLabels[operands.Label]
 
 				if !exists {
 					panic("unknown label")
@@ -43,7 +45,9 @@ func (c *compiler) store(x asm.Instruction) {
 				return config.BaseAddress + c.codeStart + destination
 			},
 		})
-	case *asm.MemoryRegister:
+	case asm.TypeMemoryRegister:
+		operands := c.assembler.Param.MemoryRegister[x.Index]
+
 		if operands.Address.OffsetRegister == math.MaxUint8 {
 			c.code = x86.StoreRegister(c.code, operands.Address.Base, operands.Address.Offset, operands.Address.Length, operands.Register)
 		} else {

src/compiler/Compile.go

@@ -105,8 +105,7 @@ func Compile(constants <-chan *core.Constant, files <-chan *fs.File, functions <
 			return result, function.Err
 		}
 
-		result.InstructionCount += len(function.Assembler.Instructions)
+		result.Count(function)
-		result.DataCount += len(function.Assembler.Data)
 	}
 
 	// Check for unused imports in all files

src/compiler/Result.go

@@ -14,6 +14,5 @@ type Result struct {
 	Code      []byte
 	Data      []byte
 	DLLs      dll.List
-	InstructionCount int
+	Statistics
-	DataCount        int
 }

src/compiler/Statistics.go

@@ -0,0 +1,35 @@
+package compiler
+
+import "git.urbach.dev/cli/q/src/core"
+
+// Statistics contains counters for all functions in the build.
+type Statistics struct {
+	InstructionCount      int
+	DataCount             int
+	LabelCount            int
+	NumberCount           int
+	RegisterCount         int
+	RegisterLabelCount    int
+	RegisterNumberCount   int
+	RegisterRegisterCount int
+	MemoryCount           int
+	MemoryLabelCount      int
+	MemoryNumberCount     int
+	MemoryRegisterCount   int
+}
+
+// Count adds statistics for this function.
+func (s *Statistics) Count(function *core.Function) {
+	s.InstructionCount += len(function.Assembler.Instructions)
+	s.DataCount += len(function.Assembler.Data)
+	s.LabelCount += len(function.Assembler.Param.Label)
+	s.NumberCount += len(function.Assembler.Param.Number)
+	s.RegisterCount += len(function.Assembler.Param.Register)
+	s.RegisterLabelCount += len(function.Assembler.Param.RegisterLabel)
+	s.RegisterNumberCount += len(function.Assembler.Param.RegisterNumber)
+	s.RegisterRegisterCount += len(function.Assembler.Param.RegisterRegister)
+	s.MemoryCount += len(function.Assembler.Param.Memory)
+	s.MemoryLabelCount += len(function.Assembler.Param.MemoryLabel)
+	s.MemoryNumberCount += len(function.Assembler.Param.MemoryNumber)
+	s.MemoryRegisterCount += len(function.Assembler.Param.MemoryRegister)
+}

src/compiler/finalize.go

@@ -17,6 +17,18 @@ func (r *Result) finalize() {
 	final := asm.Assembler{
 		Instructions: make([]asm.Instruction, 0, r.InstructionCount+8),
 		Data:         make(map[string][]byte, r.DataCount),
+		Param: asm.Param{
+			Label:            make([]asm.Label, 0, r.LabelCount),
+			Number:           make([]asm.Number, 0, r.NumberCount),
+			Register:         make([]asm.Register, 0, r.RegisterCount),
+			RegisterLabel:    make([]asm.RegisterLabel, 0, r.RegisterLabelCount),
+			RegisterNumber:   make([]asm.RegisterNumber, 0, r.RegisterNumberCount),
+			RegisterRegister: make([]asm.RegisterRegister, 0, r.RegisterRegisterCount),
+			Memory:           make([]asm.Memory, 0, r.MemoryCount),
+			MemoryLabel:      make([]asm.MemoryLabel, 0, r.MemoryLabelCount),
+			MemoryNumber:     make([]asm.MemoryNumber, 0, r.MemoryNumberCount),
+			MemoryRegister:   make([]asm.MemoryRegister, 0, r.MemoryRegisterCount),
+		},
 	}
 
 	r.Traversed = make(map[*core.Function]bool, len(r.Functions))
@@ -24,7 +36,7 @@ func (r *Result) finalize() {
 	// This will place the init function immediately after the entry point
 	// and also add everything the init function calls recursively.
 	r.eachFunction(r.Init, r.Traversed, func(f *core.Function) {
-		final.Merge(f.Assembler)
+		final.Merge(&f.Assembler)
 
 		for _, library := range f.DLLs {
 			for _, fn := range library.Functions {
@@ -50,5 +62,5 @@ func (r *Result) finalize() {
 		final.DLLCall("kernel32.ExitProcess")
 	}
 
-	r.Code, r.Data = asmc.Finalize(final, r.DLLs)
+	r.Code, r.Data = asmc.Finalize(&final, r.DLLs)
 }

src/core/PrintInstructions.go

@@ -26,19 +26,16 @@ func (f *Function) PrintInstructions() {
 
 		switch x.Mnemonic {
 		case asm.LABEL:
-			ansi.Yellow.Printf("%-44s", x.Data.String()+":")
+			label := f.Assembler.Param.Label[x.Index]
+			ansi.Yellow.Printf("%-44s", label.String()+":")
 
 		case asm.COMMENT:
-			ansi.Dim.Printf("%-44s", x.Data.String())
+			label := f.Assembler.Param.Label[x.Index]
+			ansi.Dim.Printf("%-44s", label.String())
 
 		default:
 			ansi.Green.Printf("%-12s", x.Mnemonic.String())
-
+			fmt.Printf("%-32s", x.DataString(&f.Assembler))
-			if x.Data != nil {
-				fmt.Printf("%-32s", x.Data.String())
-			} else {
-				fmt.Printf("%-32s", "")
-			}
 		}
 
 		registers := bytes.Buffer{}