[all-commits] [llvm/llvm-project] cd9352: [Debuginfod] Prune cache after fetch.

[Daniel Thornburgh via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cd935224c02fd65719ae9fd42dc89bf7b599697f
      https://github.com/llvm/llvm-project/commit/cd935224c02fd65719ae9fd42dc89bf7b599697f
  Author: Daniel Thornburgh <dthorn at google.com>
  Date:   2023-03-10 (Fri, 10 Mar 2023)

  Changed paths:
    M llvm/lib/Debuginfod/Debuginfod.cpp
    A llvm/test/tools/llvm-debuginfod-find/cache.test

  Log Message:
  -----------
  [Debuginfod] Prune cache after fetch.

Previously, the size of the debuginfod cache would grow without bound.
This change prunes the cache after a successful debuginfod lookup, as is
done in libdebuginfod.

The cache pruning behavior is configured by a new
DEBUGINFOD_CACHE_POLICY environment variable. The semantics of this are
the same as --thinlto_cache_policy.

Reviewed By: gulfem

Differential Revision: https://reviews.llvm.org/D145618