[llvm-objcopy] Match GNU behaviour regarding file symbols
authorYi Kong <yikong@google.com>
Tue, 24 Mar 2020 07:38:48 +0000 (15:38 +0800)
committerYi Kong <yikong@google.com>
Tue, 21 Apr 2020 03:30:04 +0000 (11:30 +0800)
commit7c65e88d0bc85ff2732a4e23c397ff842b97b828
tree95501cdb3d90f632befd4073642d111608d354e9
parentc031378ce01b8485ba0ef486654bc9393c4ac024
[llvm-objcopy] Match GNU behaviour regarding file symbols

GNU objcopy removes STT_FILE symbols for strip-debug operations, and
keeps them for --discard-all operation. Match their behaviour for
llvm-objcopy.

Bug: https://github.com/android/ndk/issues/1212

Differential Revision: https://reviews.llvm.org/D76675
llvm/test/tools/llvm-objcopy/ELF/keep-file-symbols.test
llvm/test/tools/llvm-objcopy/ELF/strip-debug.test
llvm/tools/llvm-objcopy/CopyConfig.cpp
llvm/tools/llvm-objcopy/ELF/ELFObjcopy.cpp