RFC: Speeding up libstdc++.so with --dynamic-list-data

[Andrew Haley]

H. J. Lu writes:
 > I am enclosing a patch to implement a new linker swicth,
 > --dynamic-list-data. It is -Bsymbolic for function symbols only.
 > I tried it with C, C++, Java and Fortran on Linux/ia32, Linux/x86-64
 > and Linux/ia64. There are only a few regressions. The function calls
 > within the new resulting DSOs will bind locally. It speeds up
 > the enclosed C++ testcase by
 > 
 > 1. 23% on ia64.
 > 2. 6% on ia32.
 > 3. 3% on x86-64.
 > 
 > Should we consider such optimization?

That's a terrible name for the option.  What does it mean?

Andrew.