[llvm-objcopy] Add support for -g as an alias for --strip-debug

This change adds an option -g to llvm-objcopy which is an alias for the existing option --strip-debug.

This fixes PR40003.

Reviewed by: alexshap

Differential Revision: https://reviews.llvm.org/D57217

llvm-svn: 352182

2 files changed, 6 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-objcopy/ELF/strip-debug.test b/llvm/test/tools/llvm-objcopy/ELF/strip-debug.test
index b88744e5f42..d7079f6abcb 100644
--- a/llvm/test/tools/llvm-objcopy/ELF/strip-debug.test
+++ b/llvm/test/tools/llvm-objcopy/ELF/strip-debug.test
@@ -6,6 +6,10 @@
 # Verify that the previous run of llvm-objcopy has not modified the input.
 # RUN: cmp %t %t3
 
+# RUN: llvm-objcopy -g %t %t2g
+# Verify that --strip-debug and -g produce the same output
+# RUN: cmp %t2 %t2g
+
 # RUN: llvm-strip --strip-debug %t3
 # RUN: cmp %t2 %t3
 
diff --git a/llvm/tools/llvm-objcopy/ObjcopyOpts.td b/llvm/tools/llvm-objcopy/ObjcopyOpts.td
index 1f7e64e4091..57d8bf177b8 100644
--- a/llvm/tools/llvm-objcopy/ObjcopyOpts.td
+++ b/llvm/tools/llvm-objcopy/ObjcopyOpts.td
@@ -95,6 +95,8 @@ def strip_all_gnu : Flag<["-", "--"], "strip-all-gnu">,
                     HelpText<"Compatible with GNU objcopy's --strip-all">;
 def strip_debug : Flag<["-", "--"], "strip-debug">,
                   HelpText<"Remove all debug information">;
+def g : Flag<["-"], "g">, Alias<strip_debug>,
+        HelpText<"Alias for --strip-debug">;
 def strip_dwo : Flag<["-", "--"], "strip-dwo">,
                 HelpText<"Remove all DWARF .dwo sections from file">;
 def strip_sections : Flag<["-", "--"], "strip-sections">,