+1 for removing unused code and being able to upgrade to GCC9 Dayue Gao
Zhao Chun <zh...@apache.org> 于2020年2月15日周六 下午4:55写道： > Hi everyone, > > At present, there are many LLVM related codes in code base, but these codes > are not really used. During my attempt to upgrade GCC, I found that the > higher version of GCC is not compatible with the LLVM 3.4.2 version > currently used by Doris. I propose to delete all LLVM related code in the > code. With this deletion, we can gain the following benefits > > 1. Remove irrelevant code to make our code more refined > 2. Ability to upgrade our toolchain from GCC7 to GCC9 or higher > 3. In the future we will be able to use later versions of LLVM. The APIs of > the LLVM versions are not compatible, and there is no way to smoothly > upgrade to a higher version. And a large amount of code that is no longer > used will become a constraint on our future use of higher versions of LLVM. > > Since our LLVM code is not really used, this operation will not bring other > harm. > > Looking forward to your feedback, if there is no objection, I will > gradually complete this operation later. > > Thanks, > Zhao Chun >
