Codecompass_parse consume huge ram when parse big project like llvm

[hunterzju]

fantastic work! I have problem when parse llvm-project (enable mlir project) build with RelWithDebInfo in the latest runtime-pgsql docker container: the ** Codecompass_parse ** process comsume huge ram space, I have 64G ram and manual create 64G swap space, but it still isn't enough. The top command says it use 160+g ram space.

I wanna is there something wrong I use it or bug?