[Bug middle-end/63556] gcc should dedup string postfixes

[sch...@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63556

--- Comment #2 from Andreas Schwab <sch...@linux-m68k.org> ---
This is done by the linker, as part of the merge section handling.

Contents of section .rodata:
 4005b0 01000200 78616263 00                 ....xabc.