macOS keeps global system counters for # of times a page was decompressed, swapped, paged, etc:
https://developer.apple.com/documentation/kernel/vm_statistics64_data_t?language=objc

This is all accessed with a single syscall:
https://cs.chromium.org/chromium/src/base/process/process_metrics_ios.cc?type=cs&q=host_statistics&sq=package:chromium&g=0&l=79

On a per-process level, the only available, relevant counter is for total # of pages from the process that have ever been compressed:
https://cs.chromium.org/chromium/src/base/process/process_metrics_mac.cc?type=cs&q=phys_footprint&sq=package:chromium&g=0&l=50