Final answer:
Yes, aggregate types exist in x86-64 as a software-level concept, such as structures and arrays in high-level programming languages, not as a direct feature of the x86-64 architecture.
Step-by-step explanation:
In the context of programming and computer architecture, aggregate types are a concept that refers to a data type that is a collection of other types. In the x86-64 architecture, which is a designation for the 64-bit version of the x86 instruction set, the idea of aggregate types is not tied to the hardware itself but rather to the software and programming languages that run on that hardware.
The x86-64 architecture does support operations on various data types, but it doesn't define higher-level constructs like aggregate types. These are instead part of higher-level languages such as C or C++, which can be compiled down to x86-64 instructions. For instance, structures (structs) and arrays in C or C++ are examples of aggregate types that can be used when writing programs for x86-64 systems.
Therefore, the answer is yes, aggregate types do exist in the context of x86-64 systems, but as a software-level concept rather than a hardware-level feature.