[all-commits] [llvm/llvm-project] 19ef02: [libc++][ci] Use ccache in the jobs that build Clang

[Louis Dionne via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 19ef02e3f4f82a439a94479589a9f1244d0b1b06
      https://github.com/llvm/llvm-project/commit/19ef02e3f4f82a439a94479589a9f1244d0b1b06
  Author: Louis Dionne <ldionne.2 at gmail.com>
  Date:   2023-05-30 (Tue, 30 May 2023)

  Changed paths:
    M libcxx/utils/ci/buildkite-pipeline-clang.yml
    M libcxx/utils/ci/run-buildbot

  Log Message:
  -----------
  [libc++][ci] Use ccache in the jobs that build Clang

This is an attempt to reduce the time taken by the Bootstrapping
build job and the Clang CI job that builds the compiler from scratch.

Differential Revision: https://reviews.llvm.org/D150908