These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libpfm-4.13.0:0/4::gentoo  USE="-static-libs" 1102 KiB

Total: 1 package (1 new), Size of downloads: 1102 KiB