llvm-symbolizer: implement -x flag and strip_path_prefix

[GoogleCodeExporter]

A handy improvement to llvm-symbolizer might be to implement the -x flag
similar to addr2line, so that the following syntax works:

% (echo 0xabc; echo 0xcde) | llvm-symbolizer -x a.out 

Another improvement is to implement --strip_path_prefix flag 
equivalent to that in sanitizers.

Original issue reported on code.google.com by konstant...@gmail.com on 14 Nov 2013 at 9:08

[GoogleCodeExporter]

Correction: addr2line flag is names "-e" or "--exe"

Original comment by samso...@google.com on 14 Nov 2013 at 9:14

[GoogleCodeExporter]

I've added --obj flag to llvm-symbolizer in r197988. I don't like the idea of 
adding a "--strip_path_prefix" flag - it doesn't look like a right thing for 
general-purpose tool.  Why can't we do "s/<path_prefix>//" in the user?

Original comment by samso...@google.com on 24 Dec 2013 at 7:41

[GoogleCodeExporter]

ok, let's see if someone asks for --strip_path_prefix (and has a reason)
Thanks! 

Original comment by konstant...@gmail.com on 25 Dec 2013 at 6:53

• Changed state: Fixed