func (gi *globalInit) update(typ llvm.Type, indices []uint32, val llvm.Value) {
if len(indices) == 0 {
gi.val = val
return
}
if gi.val.C != nil {
gi.val = llvm.ConstInsertValue(gi.val, val, indices)
}
tk := typ.TypeKind()
if len(gi.elems) == 0 {
switch tk {
case llvm.StructTypeKind:
gi.elems = make([]globalInit, typ.StructElementTypesCount())
case llvm.ArrayTypeKind:
gi.elems = make([]globalInit, typ.ArrayLength())
default:
panic("unexpected type")
}
}
var eltyp llvm.Type
switch tk {
case llvm.StructTypeKind:
eltyp = typ.StructElementTypes()[indices[0]]
case llvm.ArrayTypeKind:
eltyp = typ.ElementType()
default:
panic("unexpected type")
}
gi.elems[indices[0]].update(eltyp, indices[1:], val)
}
func (gi *globalInit) build(typ llvm.Type) llvm.Value {
if gi.val.C != nil {
return gi.val
}
if len(gi.elems) == 0 {
return llvm.ConstNull(typ)
}
switch typ.TypeKind() {
case llvm.StructTypeKind:
eltypes := typ.StructElementTypes()
elems := make([]llvm.Value, len(eltypes))
for i, eltyp := range eltypes {
elems[i] = gi.elems[i].build(eltyp)
}
return llvm.ConstStruct(elems, false)
case llvm.ArrayTypeKind:
eltyp := typ.ElementType()
elems := make([]llvm.Value, len(gi.elems))
for i := range gi.elems {
elems[i] = gi.elems[i].build(eltyp)
}
return llvm.ConstArray(eltyp, elems)
default:
panic("unexpected type")
}
}
func (c *Codegen) getUnderlyingType(t llvm.Type) llvm.Type {
for t.TypeKind() == llvm.PointerTypeKind {
t = t.ElementType()
}
return t
}