[clang] [MIPS][ISel] Write irrelevant test output to /dev/null (PR #178304)

[Walter Lee via cfe-commits]

https://github.com/googlewalt auto_merge_enabled 
https://github.com/llvm/llvm-project/pull/178304
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits