Method instCall

cmd/ll2go/instruction.go:507–537

instCall converts the given LLVM IR call instruction to a corresponding Go statement.

(inst *ir.InstCall)

// instCall converts the given LLVM IR call instruction to a corresponding Go
// statement.
func (d *decompiler) instCall(inst *ir.InstCall) ast.Stmt {
	var callee ast.Expr
	switch c := inst.Callee.(type) {
	case *ir.Function:
		// global function identifier.
		callee = d.globalIdent(c.Name)
	case *irtypes.Param:
		// local function identifier.
		callee = d.localIdent(c.Name)
	case *constant.ExprBitCast:
		callee = d.value(c)
	case *ir.InstBitCast:
		callee = d.value(c)
	case *ir.InstLoad:
		callee = d.value(c)
	default:
		panic(fmt.Sprintf("support for callee type %T not yet implemented", c))
	}
	var args []ast.Expr
	for _, a := range inst.Args {
		args = append(args, d.value(a))
	}
	expr := &ast.CallExpr{
		Fun:  callee,
		Args: args,
	}
	if irtypes.Equal(inst.Sig.Ret, irtypes.Void) {
		return &ast.ExprStmt{X: expr}
	}
	return d.assign(inst.Name, expr)
}

// binaryOp converts the given LLVM IR binary operation to a corresponding Go
// expression.