CONFIG_OPENRISC_HAVE_INST_CMOV is not available for thedefaultarchitecture x86.
Result is shown for architecture openrisc

Have instruction l.cmov for conditional move

configname: CONFIG_OPENRISC_HAVE_INST_CMOV

Linux Kernel Configuration
└─>Processor type and features
└─>Class II Instructions
└─>Have instruction l.cmov for conditional move
In linux kernel since version 5.2 (release Date: 2019-07-07)  
This config enables gcc to generate l.cmov instructions when compiling
the kernel which in general will improve performance and reduce the
binary size.

Select this if your implementation has support for the Class II
l.cmov conistional move instruction.

Say N if you are unsure.