[llvm-lib] Ignore /SUBSYSTEM flag
authorPengxuan Zheng <pzheng@quicinc.com>
Thu, 23 Jun 2022 19:25:54 +0000 (12:25 -0700)
committerPengxuan Zheng <pzheng@quicinc.com>
Tue, 28 Jun 2022 16:47:06 +0000 (09:47 -0700)
commitb5b7e3adcdcd2d640ed665258792de000e0d3097
treeb97209a3d785a4093b1c30dbaa376878890f266c
parenteca6f9160f1f70cf879005527cc44dee63be7793
[llvm-lib] Ignore /SUBSYSTEM flag

It's not clear what Microsoft's LIB.exe actually does based on the official
description of the flag (link below). We can probably ignore it for now.

https://docs.microsoft.com/en-us/cpp/build/reference/managing-a-library?view=msvc-170

Reviewed By: thieta

Differential Revision: https://reviews.llvm.org/D128458
llvm/lib/ToolDrivers/llvm-lib/Options.td