// NewCallInst returns a new call instruction based on the given function return
// type, function name and function arguments.
func NewCallInst(result, gname, args interface{}) (*instruction.Call, error) {
name, err := getGlobalName(gname)
if err != nil {
return nil, errutil.Err(err)
}
if result, ok := result.(types.Type); ok {
switch args := args.(type) {
case []value.Value:
return instruction.NewCall(result, name, args)
case nil:
return instruction.NewCall(result, name, nil)
default:
return nil, errutil.Newf("invalid function arguments type; expected []value.Value, got %T", args)
}
}
return nil, errutil.Newf("invalid function return type; expected types.Type, got %T", result)
}
// callExpr lowers the given identifier to LLVM IR, emitting code to f.
func (m *Module) callExpr(f *Function, callExpr *ast.CallExpr) value.Value {
typ := toIrType(callExpr.Name.Decl.Type())
sig, ok := typ.(*irtypes.Func)
if !ok {
panic(fmt.Sprintf("invalid function type; expected *types.Func, got %T", typ))
}
params := sig.Params()
result := sig.Result()
var args []value.Value
// TODO: Add support for variadic arguments.
for i, arg := range callExpr.Args {
expr := m.expr(f, arg)
expr = m.convert(f, expr, params[i].Type())
args = append(args, expr)
}
callInst, err := instruction.NewCall(result, callExpr.Name.String(), args)
if err != nil {
panic(fmt.Sprintf("unable to create call instruction; %v", err))
}
return f.emitInst(callInst)
}
// fixValueInst replaces dummy values within the given value instruction with
// their corresponding local variables.
func (m dummyMap) fixValueInst(oldValInst instruction.ValueInst) instruction.ValueInst {
switch oldValInst := oldValInst.(type) {
// Binary Operations
case *instruction.Add:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewAdd(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FAdd:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewFAdd(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.Sub:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewSub(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FSub:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewFSub(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.Mul:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewMul(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FMul:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewFMul(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.UDiv:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewUDiv(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.SDiv:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewSDiv(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FDiv:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewFDiv(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.URem:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewURem(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.SRem:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewSRem(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FRem:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewFRem(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
// Bitwise Binary Operations
case *instruction.ShL:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewShL(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.LShR:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewLShR(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.AShR:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewAShR(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.And:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewAnd(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.Or:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewOr(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.Xor:
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewXor(x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
// Vector Operations
case *instruction.ExtractElement:
panic("irx.dummyMap.fixValueInst: ExtractElement not yet implemented")
case *instruction.InsertElement:
panic("irx.dummyMap.fixValueInst: InsertElement not yet implemented")
case *instruction.ShuffleVector:
panic("irx.dummyMap.fixValueInst: ShuffleVector not yet implemented")
// Aggregate Operations
case *instruction.ExtractValue:
panic("irx.dummyMap.fixValueInst: ExtractValue not yet implemented")
case *instruction.InsertValue:
panic("irx.dummyMap.fixValueInst: InsertValue not yet implemented")
// Memory Access and Addressing Operations
case *instruction.Alloca:
// Nothing to do; alloca contains no dummy values.
return oldValInst
case *instruction.Load:
srcAddr := m.fixValue(oldValInst.SrcAddr())
inst, err := instruction.NewLoad(srcAddr)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.CmpXchg:
panic("irx.dummyMap.fixValueInst: CmpXchg not yet implemented")
case *instruction.AtomicRMW:
panic("irx.dummyMap.fixValueInst: AtomicRMW not yet implemented")
case *instruction.GetElementPtr:
srcAddr := m.fixValue(oldValInst.SrcAddr())
var indices []value.Value
for _, oldIndex := range oldValInst.Indices() {
index := m.fixValue(oldIndex)
indices = append(indices, index)
}
inst, err := instruction.NewGetElementPtr(srcAddr, indices)
if err != nil {
panic(errutil.Err(err))
}
return inst
// Conversion Operations
case *instruction.Trunc:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewTrunc(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.ZExt:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewZExt(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.SExt:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewSExt(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FPTrunc:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewFPTrunc(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FPExt:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewFPExt(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FPToUI:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewFPToUI(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FPToSI:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewFPToSI(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.UIToFP:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewUIToFP(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.SIToFP:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewSIToFP(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.PtrToInt:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewPtrToInt(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.IntToPtr:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewIntToPtr(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.BitCast:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewBitCast(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.AddrSpaceCast:
from := m.fixValue(oldValInst.From())
to := oldValInst.RetType()
inst, err := instruction.NewAddrSpaceCast(from, to)
if err != nil {
panic(errutil.Err(err))
}
return inst
// Other Operations
case *instruction.ICmp:
cond := oldValInst.Cond()
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewICmp(cond, x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.FCmp:
panic("irx.dummyMap.fixValueInst: FCmp not yet implemented")
case *instruction.PHI:
oldIncs := oldValInst.Incs()
var incs []*instruction.Incoming
for _, oldInc := range oldIncs {
val := m.fixValue(oldInc.Value())
pred := m.fixNamedValue(oldInc.Pred())
inc, err := instruction.NewIncoming(val, pred)
if err != nil {
panic(errutil.Err(err))
}
incs = append(incs, inc)
}
inst, err := instruction.NewPHI(incs)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.Select:
cond := m.fixValue(oldValInst.Cond())
x := m.fixValue(oldValInst.X())
y := m.fixValue(oldValInst.Y())
inst, err := instruction.NewSelect(cond, x, y)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.Call:
result := oldValInst.RetType()
// TODO: Fix value of callee if the type of Callee changes from string to
// value.Value.
callee := oldValInst.Callee()
var args []value.Value
for _, oldArg := range oldValInst.Args() {
arg := m.fixValue(oldArg)
args = append(args, arg)
}
inst, err := instruction.NewCall(result, callee, args)
if err != nil {
panic(errutil.Err(err))
}
return inst
case *instruction.VAArg:
panic("irx.dummyMap.fixValueInst: VAArg not yet implemented")
case *instruction.LandingPad:
panic("irx.dummyMap.fixValueInst: LandingPad not yet implemented")
case *instruction.CatchPad:
panic("irx.dummyMap.fixValueInst: CatchPad not yet implemented")
case *instruction.CleanupPad:
panic("irx.dummyMap.fixValueInst: CleanupPad not yet implemented")
default:
panic("irx.dummyMap.fixValueInst: not yet implemented")
}
}