/// Return the struct value represented by v without the padding fields.
/// Unions will be expanded, with a value for each member.
/// Note: v must be a pointer to a struct, but the return value will be a
/// first-class struct value.
LLValue* DtoUnpaddedStruct(Type* dty, LLValue* v) {
assert(dty->ty == Tstruct);
TypeStruct* sty = static_cast<TypeStruct*>(dty);
VarDeclarations& fields = sty->sym->fields;
LLValue* newval = llvm::UndefValue::get(DtoUnpaddedStructType(dty));
for (unsigned i = 0; i < fields.dim; i++) {
LLValue* fieldptr = DtoIndexAggregate(v, sty->sym, fields[i]);
LLValue* fieldval;
if (fields[i]->type->ty == Tstruct) {
// Nested structs are the only members that can contain padding
fieldval = DtoUnpaddedStruct(fields[i]->type, fieldptr);
} else {
fieldval = DtoLoad(fieldptr);
}
newval = DtoInsertValue(newval, fieldval, i);
}
return newval;
}
/// Return the struct value represented by v without the padding fields.
/// Unions will be expanded, with a value for each member.
/// Note: v must be a pointer to a struct, but the return value will be a
/// first-class struct value.
LLValue* DtoUnpaddedStruct(Type* dty, LLValue* v) {
assert(dty->ty == Tstruct);
TypeStruct* sty = (TypeStruct*) dty;
Array& fields = sty->sym->fields;
LLValue* newval = llvm::UndefValue::get(DtoUnpaddedStructType(dty));
for (unsigned i = 0; i < fields.dim; i++) {
VarDeclaration* vd = (VarDeclaration*) fields.data[i];
LLValue* fieldptr = DtoIndexStruct(v, sty->sym, vd);
LLValue* fieldval;
if (vd->type->ty == Tstruct) {
// Nested structs are the only members that can contain padding
fieldval = DtoUnpaddedStruct(vd->type, fieldptr);
} else {
fieldval = DtoLoad(fieldptr);
}
newval = DtoInsertValue(newval, fieldval, i);
}
return newval;
}
