func (tm *TypeMap) interfaceRuntimeType(tstr string, i *types.Interface) (global, ptr llvm.Value) {
rtype := tm.makeRtype(i, reflect.Interface)
interfaceType := llvm.ConstNull(tm.runtimeInterfaceType)
global, ptr = tm.makeRuntimeTypeGlobal(interfaceType)
tm.types.record(tstr, global, ptr)
interfaceType = llvm.ConstInsertValue(interfaceType, rtype, []uint32{0})
methodset := i.MethodSet()
imethods := make([]llvm.Value, methodset.Len())
for index := 0; index < methodset.Len(); index++ {
method := methodset.At(index).Obj()
imethod := llvm.ConstNull(tm.runtimeImethod)
name := tm.globalStringPtr(method.Name())
name = llvm.ConstBitCast(name, tm.runtimeImethod.StructElementTypes()[0])
//pkgpath := tm.globalStringPtr(tm.functions.objectdata[method].Package.Path())
//pkgpath = llvm.ConstBitCast(name, tm.runtimeImethod.StructElementTypes()[1])
mtyp := tm.ToRuntime(method.Type())
imethod = llvm.ConstInsertValue(imethod, name, []uint32{0})
//imethod = llvm.ConstInsertValue(imethod, pkgpath, []uint32{1})
imethod = llvm.ConstInsertValue(imethod, mtyp, []uint32{2})
imethods[index] = imethod
}
imethodsSliceType := tm.runtimeInterfaceType.StructElementTypes()[1]
imethodsSlice := tm.makeSlice(imethods, imethodsSliceType)
interfaceType = llvm.ConstInsertValue(interfaceType, imethodsSlice, []uint32{1})
global.SetInitializer(interfaceType)
return global, ptr
}
func reorderGlobalConstructors(m llvm.Module) error {
ctors := m.NamedGlobal("llvm.global_ctors")
if ctors.IsNil() {
// No global constructors.
return nil
}
init := ctors.Initializer()
arraylength := init.Type().ArrayLength()
zeroindex := []uint32{0}
// The constructors are ordered within each package, but the packages
// are in reverse order. We must go backwards through the constructors,
// reassigning priorities.
ceiling, npackagectors := -1, -1
for i := arraylength - 1; i >= 0; i-- {
indices := []uint32{uint32(i)}
ctor := llvm.ConstExtractValue(init, indices)
priority := int(llvm.ConstExtractValue(ctor, zeroindex).ZExtValue())
if npackagectors == -1 {
ceiling = arraylength - (i + 1) + priority
npackagectors = priority
}
newpriority := ceiling - (npackagectors - priority)
newpriorityvalue := llvm.ConstInt(llvm.Int32Type(), uint64(newpriority), false)
ctor = llvm.ConstInsertValue(ctor, newpriorityvalue, zeroindex)
if priority == 1 {
npackagectors = -1
}
init = llvm.ConstInsertValue(init, ctor, indices)
}
ctors.SetInitializer(init)
return nil
}
func (tm *TypeMap) interfaceRuntimeType(i *types.Interface) (global, ptr llvm.Value) {
rtype := tm.makeRtype(i, reflect.Interface)
interfaceType := llvm.ConstNull(tm.runtime.interfaceType.llvm)
global, ptr = tm.makeRuntimeTypeGlobal(interfaceType, typeString(i))
tm.types.Set(i, runtimeTypeInfo{global, ptr})
interfaceType = llvm.ConstInsertValue(interfaceType, rtype, []uint32{0})
methodset := tm.MethodSet(i)
imethods := make([]llvm.Value, methodset.Len())
for index := 0; index < methodset.Len(); index++ {
method := methodset.At(index).Obj()
imethod := llvm.ConstNull(tm.runtime.imethod.llvm)
name := tm.globalStringPtr(method.Name())
name = llvm.ConstBitCast(name, tm.runtime.imethod.llvm.StructElementTypes()[0])
mtyp := tm.ToRuntime(method.Type())
imethod = llvm.ConstInsertValue(imethod, name, []uint32{0})
if !ast.IsExported(method.Name()) {
pkgpath := tm.globalStringPtr(method.Pkg().Path())
pkgpath = llvm.ConstBitCast(pkgpath, tm.runtime.imethod.llvm.StructElementTypes()[1])
imethod = llvm.ConstInsertValue(imethod, pkgpath, []uint32{1})
}
imethod = llvm.ConstInsertValue(imethod, mtyp, []uint32{2})
imethods[index] = imethod
}
imethodsSliceType := tm.runtime.interfaceType.llvm.StructElementTypes()[1]
imethodsSlice := tm.makeSlice(imethods, imethodsSliceType)
interfaceType = llvm.ConstInsertValue(interfaceType, imethodsSlice, []uint32{1})
global.SetInitializer(interfaceType)
return global, ptr
}
func (tm *TypeMap) pointerRuntimeType(p *types.Pointer) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(p, reflect.Map)
ptrType := llvm.ConstNull(tm.runtimePtrType)
ptrType = llvm.ConstInsertValue(ptrType, commonType, []uint32{0})
ptrType = llvm.ConstInsertValue(ptrType, tm.ToRuntime(p.Base), []uint32{1})
return tm.makeRuntimeTypeGlobal(ptrType)
}
func (tm *TypeMap) nameRuntimeType(n *types.Name) (global, ptr llvm.Value) {
global, ptr = tm.makeRuntimeType(n.Underlying)
globalInit := global.Initializer()
// Locate the common type.
underlyingRuntimeType := llvm.ConstExtractValue(globalInit, []uint32{1})
commonType := underlyingRuntimeType
if _, ok := n.Underlying.(*types.Basic); !ok {
commonType = llvm.ConstExtractValue(commonType, []uint32{0})
}
// Insert the uncommon type.
uncommonTypeInit := llvm.ConstNull(tm.runtimeUncommonType)
uncommonType := llvm.AddGlobal(tm.module, uncommonTypeInit.Type(), "")
uncommonType.SetInitializer(uncommonTypeInit)
commonType = llvm.ConstInsertValue(commonType, uncommonType, []uint32{8})
// Update the global's initialiser.
if _, ok := n.Underlying.(*types.Basic); !ok {
underlyingRuntimeType = llvm.ConstInsertValue(underlyingRuntimeType, commonType, []uint32{0})
} else {
underlyingRuntimeType = commonType
}
globalInit = llvm.ConstInsertValue(globalInit, underlyingRuntimeType, []uint32{1})
global.SetName("__llgo.reflect." + n.Obj.Name)
return global, ptr
}
func (tm *TypeMap) nameRuntimeType(n *types.Named) (global, ptr llvm.Value) {
name := typeString(n)
path := "runtime"
if pkg := n.Obj().Pkg(); pkg != nil {
path = pkg.Path()
}
if path != tm.pkgpath {
// We're not compiling the package from whence the type came,
// so we'll just create a pointer to it here.
global := llvm.AddGlobal(tm.module, tm.runtime.rtype.llvm, typeSymbol(name))
global.SetInitializer(llvm.ConstNull(tm.runtime.rtype.llvm))
global.SetLinkage(llvm.CommonLinkage)
return global, global
}
// If the underlying type is Basic, then we always create
// a new global. Otherwise, we clone the value returned
// from toRuntime in case it is cached and reused.
underlying := n.Underlying()
if basic, ok := underlying.(*types.Basic); ok {
global, ptr = tm.basicRuntimeType(basic, true)
global.SetName(typeSymbol(name))
} else {
global, ptr = tm.toRuntime(underlying)
clone := llvm.AddGlobal(tm.module, global.Type().ElementType(), typeSymbol(name))
clone.SetInitializer(global.Initializer())
global = clone
ptr = llvm.ConstBitCast(global, llvm.PointerType(tm.runtime.rtype.llvm, 0))
}
global.SetLinkage(llvm.ExternalLinkage)
// Locate the rtype.
underlyingRuntimeType := global.Initializer()
rtype := underlyingRuntimeType
if rtype.Type() != tm.runtime.rtype.llvm {
rtype = llvm.ConstExtractValue(rtype, []uint32{0})
}
// Insert the uncommon type.
uncommonTypeInit := tm.uncommonType(n, nil)
uncommonType := llvm.AddGlobal(tm.module, uncommonTypeInit.Type(), "")
uncommonType.SetInitializer(uncommonTypeInit)
rtype = llvm.ConstInsertValue(rtype, uncommonType, []uint32{9})
// Replace the rtype's string representation with the one from
// uncommonType. XXX should we have the package name prepended? Probably.
namePtr := llvm.ConstExtractValue(uncommonTypeInit, []uint32{0})
rtype = llvm.ConstInsertValue(rtype, namePtr, []uint32{8})
// Update the global's initialiser. Note that we take a copy
// of the underlying type; we're not updating a shared type.
if underlyingRuntimeType.Type() != tm.runtime.rtype.llvm {
underlyingRuntimeType = llvm.ConstInsertValue(underlyingRuntimeType, rtype, []uint32{0})
} else {
underlyingRuntimeType = rtype
}
global.SetInitializer(underlyingRuntimeType)
return global, ptr
}
func (tm *TypeMap) mapRuntimeType(m *types.Map) (global, ptr llvm.Value) {
rtype := tm.makeRtype(m, reflect.Map)
mapType := llvm.ConstNull(tm.runtime.mapType.llvm)
mapType = llvm.ConstInsertValue(mapType, rtype, []uint32{0})
mapType = llvm.ConstInsertValue(mapType, tm.ToRuntime(m.Key()), []uint32{1})
mapType = llvm.ConstInsertValue(mapType, tm.ToRuntime(m.Elem()), []uint32{2})
return tm.makeRuntimeTypeGlobal(mapType, typeString(m))
}
func (tm *TypeMap) mapRuntimeType(m *types.Map) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(m, reflect.Map)
mapType := llvm.ConstNull(tm.runtimeMapType)
mapType = llvm.ConstInsertValue(mapType, commonType, []uint32{0})
mapType = llvm.ConstInsertValue(mapType, tm.ToRuntime(m.Key), []uint32{1})
mapType = llvm.ConstInsertValue(mapType, tm.ToRuntime(m.Elt), []uint32{2})
return tm.makeRuntimeTypeGlobal(mapType)
}
func (tm *TypeMap) sliceRuntimeType(s *types.Slice) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(s, reflect.Slice)
elemRuntimeType := tm.ToRuntime(s.Elt)
sliceType := llvm.ConstNull(tm.runtimeSliceType)
sliceType = llvm.ConstInsertValue(sliceType, commonType, []uint32{0})
sliceType = llvm.ConstInsertValue(sliceType, elemRuntimeType, []uint32{1})
return tm.makeRuntimeTypeGlobal(sliceType)
}
func (tm *TypeMap) sliceRuntimeType(tstr string, s *types.Slice) (global, ptr llvm.Value) {
rtype := tm.makeRtype(s, reflect.Slice)
sliceType := llvm.ConstNull(tm.runtimeSliceType)
global, ptr = tm.makeRuntimeTypeGlobal(sliceType)
sliceType = llvm.ConstInsertValue(sliceType, rtype, []uint32{0})
elemRuntimeType := tm.ToRuntime(s.Elem())
sliceType = llvm.ConstInsertValue(sliceType, elemRuntimeType, []uint32{1})
global.SetInitializer(sliceType)
return global, ptr
}
func (tm *TypeMap) uncommonType(n *types.Named, ptr bool) llvm.Value {
uncommonTypeInit := llvm.ConstNull(tm.runtimeUncommonType)
namePtr := tm.globalStringPtr(n.Obj().Name())
uncommonTypeInit = llvm.ConstInsertValue(uncommonTypeInit, namePtr, []uint32{0})
_, path := tm.qualifiedName(n)
pkgpathPtr := tm.globalStringPtr(path)
uncommonTypeInit = llvm.ConstInsertValue(uncommonTypeInit, pkgpathPtr, []uint32{1})
methodset := tm.functions.methods(n)
methodfuncs := methodset.nonptr
if ptr {
methodfuncs = methodset.ptr
}
// Store methods.
methods := make([]llvm.Value, len(methodfuncs))
for i, mfunc := range methodfuncs {
ftyp := mfunc.Type().(*types.Signature)
method := llvm.ConstNull(tm.runtimeMethod)
name := tm.globalStringPtr(mfunc.Name())
name = llvm.ConstBitCast(name, tm.runtimeMethod.StructElementTypes()[0])
// name
method = llvm.ConstInsertValue(method, name, []uint32{0})
// pkgPath
method = llvm.ConstInsertValue(method, pkgpathPtr, []uint32{1})
// mtyp (method type, no receiver)
{
ftyp := types.NewSignature(nil, nil, ftyp.Params(), ftyp.Results(), ftyp.IsVariadic())
mtyp := tm.ToRuntime(ftyp)
method = llvm.ConstInsertValue(method, mtyp, []uint32{2})
}
// typ (function type, with receiver)
typ := tm.ToRuntime(ftyp)
method = llvm.ConstInsertValue(method, typ, []uint32{3})
// tfn (standard method/function pointer for plain method calls)
tfn := tm.resolver.Resolve(tm.functions.objectdata[mfunc].Ident).LLVMValue()
tfn = llvm.ConstExtractValue(tfn, []uint32{0})
tfn = llvm.ConstPtrToInt(tfn, tm.target.IntPtrType())
// ifn (single-word receiver function pointer for interface calls)
ifn := tfn
if !ptr && tm.Sizeof(ftyp.Recv().Type()) > int64(tm.target.PointerSize()) {
mfunc := methodset.lookup(mfunc.Name(), true)
ifn = tm.resolver.Resolve(tm.functions.objectdata[mfunc].Ident).LLVMValue()
ifn = llvm.ConstExtractValue(ifn, []uint32{0})
ifn = llvm.ConstPtrToInt(ifn, tm.target.IntPtrType())
}
method = llvm.ConstInsertValue(method, ifn, []uint32{4})
method = llvm.ConstInsertValue(method, tfn, []uint32{5})
methods[i] = method
}
methodsSliceType := tm.runtimeUncommonType.StructElementTypes()[2]
methodsSlice := tm.makeSlice(methods, methodsSliceType)
uncommonTypeInit = llvm.ConstInsertValue(uncommonTypeInit, methodsSlice, []uint32{2})
return uncommonTypeInit
}
func (tm *TypeMap) nameRuntimeType(n *types.Named) (global, ptr llvm.Value) {
var path string
if data, ok := tm.functions.objectdata[n.Obj()]; ok {
path = pkgpath(data.Package)
}
if path == "" {
// Set to "runtime", so the builtin types have a home.
path = "runtime"
}
globalname := "__llgo.type." + path + "." + n.Obj().Name()
if path != tm.pkgpath {
// We're not compiling the package from whence the type came,
// so we'll just create a pointer to it here.
global := llvm.AddGlobal(tm.module, tm.runtimeType, globalname)
global.SetInitializer(llvm.ConstNull(tm.runtimeType))
global.SetLinkage(llvm.CommonLinkage)
return global, global
}
underlying := n.Underlying()
if name, ok := underlying.(*types.Named); ok {
underlying = name.Underlying()
}
global, ptr = tm.toRuntime(underlying)
// Locate the rtype.
underlyingRuntimeType := global.Initializer()
rtype := underlyingRuntimeType
if rtype.Type() != tm.runtimeType {
rtype = llvm.ConstExtractValue(rtype, []uint32{0})
}
// Insert the uncommon type.
uncommonTypeInit := tm.uncommonType(n, false)
uncommonType := llvm.AddGlobal(tm.module, uncommonTypeInit.Type(), "")
uncommonType.SetInitializer(uncommonTypeInit)
rtype = llvm.ConstInsertValue(rtype, uncommonType, []uint32{9})
// Replace the rtype's string representation with the one from
// uncommonType. XXX should we have the package name prepended? Probably.
namePtr := llvm.ConstExtractValue(uncommonTypeInit, []uint32{0})
rtype = llvm.ConstInsertValue(rtype, namePtr, []uint32{8})
// Update the global's initialiser. Note that we take a copy
// of the underlying type; we're not updating a shared type.
if underlyingRuntimeType.Type() != tm.runtimeType {
underlyingRuntimeType = llvm.ConstInsertValue(underlyingRuntimeType, rtype, []uint32{0})
} else {
underlyingRuntimeType = rtype
}
global.SetName(globalname)
global.SetInitializer(underlyingRuntimeType)
return global, ptr
}
func (tm *TypeMap) arrayRuntimeType(a *types.Array) (global, ptr llvm.Value) {
rtype := tm.makeRtype(a, reflect.Array)
elemRuntimeType := tm.ToRuntime(a.Elem())
sliceRuntimeType := tm.ToRuntime(types.NewSlice(a.Elem()))
uintptrlen := llvm.ConstInt(tm.target.IntPtrType(), uint64(a.Len()), false)
arrayType := llvm.ConstNull(tm.runtime.arrayType.llvm)
arrayType = llvm.ConstInsertValue(arrayType, rtype, []uint32{0})
arrayType = llvm.ConstInsertValue(arrayType, elemRuntimeType, []uint32{1})
arrayType = llvm.ConstInsertValue(arrayType, sliceRuntimeType, []uint32{2})
arrayType = llvm.ConstInsertValue(arrayType, uintptrlen, []uint32{3})
return tm.makeRuntimeTypeGlobal(arrayType, typeString(a))
}
func (tm *TypeMap) arrayRuntimeType(a *types.Array) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(a, reflect.Array)
elemRuntimeType := tm.ToRuntime(a.Elt)
sliceRuntimeType := tm.ToRuntime(&types.Slice{Elt: a.Elt})
uintptrlen := llvm.ConstInt(tm.target.IntPtrType(), uint64(a.Len), false)
arrayType := llvm.ConstNull(tm.runtimeArrayType)
arrayType = llvm.ConstInsertValue(arrayType, commonType, []uint32{0})
arrayType = llvm.ConstInsertValue(arrayType, elemRuntimeType, []uint32{1})
arrayType = llvm.ConstInsertValue(arrayType, sliceRuntimeType, []uint32{2})
arrayType = llvm.ConstInsertValue(arrayType, uintptrlen, []uint32{3})
return tm.makeRuntimeTypeGlobal(arrayType)
}
func (tm *TypeMap) mapRuntimeType(m *types.Map) llvm.Value {
result := llvm.AddGlobal(tm.module, tm.runtimeMapType, "")
elementTypes := tm.runtimeCommonType.StructElementTypes()
ptr := llvm.ConstBitCast(result, elementTypes[9])
commonType := tm.makeCommonType(m, reflect.Map)
commonType = llvm.ConstInsertValue(commonType, ptr, []uint32{9})
init := llvm.ConstNull(tm.runtimeMapType)
init = llvm.ConstInsertValue(init, commonType, []uint32{0})
result.SetInitializer(init)
// TODO set key, elem
return result
}
func (tm *TypeMap) funcRuntimeType(f *types.Signature) (global, ptr llvm.Value) {
rtype := tm.makeRtype(f, reflect.Func)
funcType := llvm.ConstNull(tm.runtimeFuncType)
funcType = llvm.ConstInsertValue(funcType, rtype, []uint32{0})
// dotdotdot
if f.IsVariadic() {
variadic := llvm.ConstInt(llvm.Int1Type(), 1, false)
funcType = llvm.ConstInsertValue(funcType, variadic, []uint32{1})
}
// TODO in
//funcType = llvm.ConstInsertValue(funcType, tm.ToRuntime(p.Elt()), []uint32{2})
// TODO out
//funcType = llvm.ConstInsertValue(funcType, tm.ToRuntime(p.Elt()), []uint32{3})
return tm.makeRuntimeTypeGlobal(funcType)
}
func (tm *TypeMap) structRuntimeType(s *types.Struct) llvm.Value {
result := llvm.AddGlobal(tm.module, tm.runtimeStructType, "")
elementTypes := tm.runtimeCommonType.StructElementTypes()
ptr := llvm.ConstBitCast(result, elementTypes[9])
commonType := tm.makeCommonType(s, reflect.Struct)
commonType = llvm.ConstInsertValue(commonType, ptr, []uint32{9})
init := llvm.ConstNull(tm.runtimeStructType)
init = llvm.ConstInsertValue(init, commonType, []uint32{0})
result.SetInitializer(init)
// TODO set fields
//panic("unimplemented")
return result
}
func (tm *TypeMap) mapRuntimeType(m *types.Map) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(m, reflect.Map)
mapType := llvm.ConstNull(tm.runtimeMapType)
mapType = llvm.ConstInsertValue(mapType, commonType, []uint32{0})
// TODO set key, elem
return tm.makeRuntimeTypeGlobal(mapType)
}
func (tm *TypeMap) structRuntimeType(s *types.Struct) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(s, reflect.Struct)
structType := llvm.ConstNull(tm.runtimeStructType)
structType = llvm.ConstInsertValue(structType, commonType, []uint32{0})
// TODO set fields
return tm.makeRuntimeTypeGlobal(structType)
}
func (tm *TypeMap) structRuntimeType(tstr string, s *types.Struct) (global, ptr llvm.Value) {
rtype := tm.makeRtype(s, reflect.Struct)
structType := llvm.ConstNull(tm.runtimeStructType)
structType = llvm.ConstInsertValue(structType, rtype, []uint32{0})
global, ptr = tm.makeRuntimeTypeGlobal(structType)
// TODO set fields, reset initialiser
return
}
func (tm *TypeMap) interfaceRuntimeType(i *types.Interface) (global, ptr llvm.Value) {
commonType := tm.makeCommonType(i, reflect.Interface)
interfaceType := llvm.ConstNull(tm.runtimeInterfaceType)
interfaceType = llvm.ConstInsertValue(interfaceType, commonType, []uint32{0})
// TODO set methods
//interfaceType = llvm.ConstInsertValue(interfaceType, methods, []uint32{1})
return tm.makeRuntimeTypeGlobal(interfaceType)
}
func (tm *TypeMap) nameRuntimeType(n *types.Name) llvm.Value {
underlyingRuntimeType := tm.ToRuntime(n.Underlying).Initializer()
result := llvm.AddGlobal(tm.module, underlyingRuntimeType.Type(), "")
result.SetName("__llgo.reflect." + n.Obj.Name)
elementTypes := tm.runtimeCommonType.StructElementTypes()
ptr := llvm.ConstBitCast(result, elementTypes[9])
commonType := llvm.ConstInsertValue(underlyingRuntimeType, ptr, []uint32{9})
uncommonTypeInit := llvm.ConstNull(tm.runtimeUncommonType) // TODO
uncommonType := llvm.AddGlobal(tm.module, uncommonTypeInit.Type(), "")
uncommonType.SetInitializer(uncommonTypeInit)
commonType = llvm.ConstInsertValue(commonType, uncommonType, []uint32{8})
// TODO set string, uncommonType.
result.SetInitializer(commonType)
return result
}
func (tm *TypeMap) chanRuntimeType(c *types.Chan) (global, ptr llvm.Value) {
rtype := tm.makeRtype(c, reflect.Chan)
chanType := llvm.ConstNull(tm.runtimeChanType)
chanType = llvm.ConstInsertValue(chanType, rtype, []uint32{0})
chanType = llvm.ConstInsertValue(chanType, tm.ToRuntime(c.Elem()), []uint32{1})
// go/ast and reflect disagree on values for direction.
var dir reflect.ChanDir
if c.Dir()&ast.SEND != 0 {
dir = reflect.SendDir
}
if c.Dir()&ast.RECV != 0 {
dir |= reflect.RecvDir
}
uintptrdir := llvm.ConstInt(tm.target.IntPtrType(), uint64(dir), false)
chanType = llvm.ConstInsertValue(chanType, uintptrdir, []uint32{2})
return tm.makeRuntimeTypeGlobal(chanType)
}
func (tm *TypeMap) makeSlice(values []llvm.Value, slicetyp llvm.Type) llvm.Value {
ptrtyp := slicetyp.StructElementTypes()[0]
var globalptr llvm.Value
if len(values) > 0 {
array := llvm.ConstArray(ptrtyp.ElementType(), values)
globalptr = llvm.AddGlobal(tm.module, array.Type(), "")
globalptr.SetInitializer(array)
globalptr = llvm.ConstBitCast(globalptr, ptrtyp)
} else {
globalptr = llvm.ConstNull(ptrtyp)
}
len_ := llvm.ConstInt(tm.inttype, uint64(len(values)), false)
slice := llvm.ConstNull(slicetyp)
slice = llvm.ConstInsertValue(slice, globalptr, []uint32{0})
slice = llvm.ConstInsertValue(slice, len_, []uint32{1})
slice = llvm.ConstInsertValue(slice, len_, []uint32{2})
return slice
}
func (tm *TypeMap) basicRuntimeType(b *types.Basic) llvm.Value {
commonType := tm.makeCommonType(b, reflect.Kind(b.Kind))
result := llvm.AddGlobal(tm.module, commonType.Type(), "")
elementTypes := tm.runtimeCommonType.StructElementTypes()
ptr := llvm.ConstBitCast(result, elementTypes[9])
commonType = llvm.ConstInsertValue(commonType, ptr, []uint32{9})
result.SetInitializer(commonType)
return result
}
func (tm *TypeMap) funcRuntimeType(f *types.Signature) (global, ptr llvm.Value) {
rtype := tm.makeRtype(f, reflect.Func)
funcType := llvm.ConstNull(tm.runtime.funcType.llvm)
global, ptr = tm.makeRuntimeTypeGlobal(funcType, typeString(f))
tm.types.Set(f, runtimeTypeInfo{global, ptr})
funcType = llvm.ConstInsertValue(funcType, rtype, []uint32{0})
// dotdotdot
if f.Variadic() {
variadic := llvm.ConstInt(llvm.Int1Type(), 1, false)
funcType = llvm.ConstInsertValue(funcType, variadic, []uint32{1})
}
// in
intypes := tm.rtypeSlice(f.Params())
funcType = llvm.ConstInsertValue(funcType, intypes, []uint32{2})
// out
outtypes := tm.rtypeSlice(f.Results())
funcType = llvm.ConstInsertValue(funcType, outtypes, []uint32{3})
global.SetInitializer(funcType)
return global, ptr
}
func (c *compiler) makeFunc(ident *ast.Ident, ftyp *types.Signature) *LLVMValue {
fname := ident.String()
if ftyp.Recv() == nil && fname == "init" {
// Make "init" functions anonymous.
fname = ""
} else {
var pkgname string
if recv := ftyp.Recv(); recv != nil {
var recvname string
switch recvtyp := recv.Type().(type) {
case *types.Pointer:
if named, ok := recvtyp.Elem().(*types.Named); ok {
obj := named.Obj()
recvname = "*" + obj.Name()
pkgname = obj.Pkg().Path()
}
case *types.Named:
named := recvtyp
obj := named.Obj()
recvname = obj.Name()
pkgname = obj.Pkg().Path()
}
if recvname != "" {
fname = fmt.Sprintf("%s.%s", recvname, fname)
} else {
// If the receiver is an unnamed struct, we're
// synthesising a method for an unnamed struct
// type. There's no meaningful name to give the
// function, so leave it up to LLVM.
fname = ""
}
} else {
obj := c.typeinfo.Objects[ident]
pkgname = obj.Pkg().Path()
}
if fname != "" {
fname = pkgname + "." + fname
}
}
// gcimporter may produce multiple AST objects for the same function.
llvmftyp := c.types.ToLLVM(ftyp)
var fn llvm.Value
if fname != "" {
fn = c.module.Module.NamedFunction(fname)
}
if fn.IsNil() {
llvmfptrtyp := llvmftyp.StructElementTypes()[0].ElementType()
fn = llvm.AddFunction(c.module.Module, fname, llvmfptrtyp)
}
fn = llvm.ConstInsertValue(llvm.ConstNull(llvmftyp), fn, []uint32{0})
return c.NewValue(fn, ftyp)
}
func (tm *TypeMap) chanRuntimeType(c *types.Chan) (global, ptr llvm.Value) {
rtype := tm.makeRtype(c, reflect.Chan)
chanType := llvm.ConstNull(tm.runtime.chanType.llvm)
chanType = llvm.ConstInsertValue(chanType, rtype, []uint32{0})
chanType = llvm.ConstInsertValue(chanType, tm.ToRuntime(c.Elem()), []uint32{1})
// go/ast and reflect disagree on values for direction.
var dir reflect.ChanDir
switch c.Dir() {
case types.SendOnly:
dir = reflect.SendDir
case types.RecvOnly:
dir = reflect.RecvDir
case types.SendRecv:
dir = reflect.SendDir | reflect.RecvDir
}
uintptrdir := llvm.ConstInt(tm.target.IntPtrType(), uint64(dir), false)
chanType = llvm.ConstInsertValue(chanType, uintptrdir, []uint32{2})
return tm.makeRuntimeTypeGlobal(chanType, typeString(c))
}
func (tm *TypeMap) makeRuntimeTypeGlobal(v llvm.Value) (global, ptr llvm.Value) {
runtimeTypeValue := llvm.ConstNull(tm.runtimeType)
initType := llvm.StructType([]llvm.Type{tm.runtimeType, v.Type()}, false)
global = llvm.AddGlobal(tm.module, initType, "")
ptr = llvm.ConstBitCast(global, llvm.PointerType(tm.runtimeType, 0))
// Set ptrToThis in v's commonType.
if v.Type() == tm.runtimeCommonType {
v = llvm.ConstInsertValue(v, ptr, []uint32{9})
} else {
commonType := llvm.ConstExtractValue(v, []uint32{0})
commonType = llvm.ConstInsertValue(commonType, ptr, []uint32{9})
v = llvm.ConstInsertValue(v, commonType, []uint32{0})
}
init := llvm.Undef(initType)
//runtimeTypeValue = llvm.ConstInsertValue() TODO
init = llvm.ConstInsertValue(init, runtimeTypeValue, []uint32{0})
init = llvm.ConstInsertValue(init, v, []uint32{1})
global.SetInitializer(init)
return
}
func (tm *TypeMap) makeCommonType(t types.Type, k reflect.Kind) llvm.Value {
// Not sure if there's an easier way to do this, but if you just
// use ConstStruct, you end up getting a different llvm.Type.
lt := tm.ToLLVM(t)
typ := llvm.ConstNull(tm.runtimeCommonType)
elementTypes := tm.runtimeCommonType.StructElementTypes()
// Size.
size := llvm.SizeOf(lt)
if size.Type().IntTypeWidth() > elementTypes[0].IntTypeWidth() {
size = llvm.ConstTrunc(size, elementTypes[0])
}
typ = llvm.ConstInsertValue(typ, size, []uint32{0})
// TODO hash
// TODO padding
// Alignment.
align := llvm.ConstTrunc(llvm.AlignOf(lt), llvm.Int8Type())
typ = llvm.ConstInsertValue(typ, align, []uint32{3}) // var
typ = llvm.ConstInsertValue(typ, align, []uint32{4}) // field
// Kind.
kind := llvm.ConstInt(llvm.Int8Type(), uint64(k), false)
typ = llvm.ConstInsertValue(typ, kind, []uint32{5})
// Algorithm table.
alg := tm.makeAlgorithmTable(t)
algptr := llvm.AddGlobal(tm.module, alg.Type(), "")
algptr.SetInitializer(alg)
algptr = llvm.ConstBitCast(algptr, elementTypes[6])
typ = llvm.ConstInsertValue(typ, algptr, []uint32{6})
// TODO string
return typ
}
