var runtime.x86HasPOPCNT 2 uses runtime (current package) cpuflags.go#L27: x86HasPOPCNT bool proc.go#L583: x86HasPOPCNT = cpu.X86.HasPOPCNT
The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)