tree 78605f45fae46d7fd4d3d877fa671fe9ad3f6aee
parent 613f64ea2a7e686429ef67d577548d856e7ff253
author Nathan Sidwell <nathan@acm.org> 1645027404 -0800
committer Copybara-Service <copybara-worker@google.com> 1646154263 -0800

[demangler] Improve buffer hysteresis

Improve demangler buffer hysteresis.  If we needed more than double
the buffer, the original code would allocate exactly the amount
needed, and thus consequently the next request would also realloc.
We're very unlikely to get into wanting more than double, after the
first allocation, as it would require the user to have used an
identifier larger than the hysteresis.  With machine generated code
that's possible, but unlikely.

Reviewed By: ChuanqiXu

Differential Revision: https://reviews.llvm.org/D119972

GitOrigin-RevId: 024495e62660a51edd060b57a95ca68d584d3b43