[PATCH 0/3] Speed up hashing in demangled_names_hash

[Christian Biesinger via gdb-patches]

Use a faster hash function (via an optional dependency) and makes
equality comparison slightly faster (by comparing the length first).

Christian Biesinger (3):
  Store the mangled name as a string_view
  Add a fast_hash function in common-utils
  Use libxxhash for hashing, if present

 gdb/Makefile.in  |   8 +-
 gdb/config.in    |   3 +
 gdb/configure    | 493 +++++++++++++++++++++++++++++++++++++++++++++++
 gdb/configure.ac |  19 ++
 gdb/symtab.c     |  16 +-
 gdb/utils.c      |  15 ++
 gdb/utils.h      |   2 +
 7 files changed, 547 insertions(+), 9 deletions(-)

-- 
2.23.0.444.g18eeb5a265-goog