Some CPU architectures, such as the MIPS and Alpha, do not use a dedicated flag register. Others do not implicitly set and/or read flags. Such machines either do not pass implicit status information between instructions at all, or they pass it in an explicitly selected general purpose register.
What are some examples of CPU architectures that do not use a dedicated flag register?
Some examples of CPU architectures that do not use a dedicated flag register include MIPS and Alpha.