tree 3c236a2973eabca1b01fdf23ce52426dfbffc51c
parent b42051fd2e6c121cf63a492f4f48206d1c20274b
author Luís Ferreira <contact@lsferreira.net> 1635290607 -0700
committer Copybara-Service <copybara-worker@google.com> 1635290864 -0700

[Demangle] Add prepend functionality to OutputString

Implement the functionallity of prepend, required by D demangler.
Please read discussion https://reviews.llvm.org/D111414 for context.
See also https://reviews.llvm.org/D111947 .

Reviewed By: dblaikie, Geod24

Differential Revision: https://reviews.llvm.org/D111948

GitOrigin-RevId: 2d77b272a8f9b5b89b022628ca30b6b896a8f725