[llvm] [libc++] Move the check-generated-files job to Github Actions (PR #68920)

[Louis Dionne via llvm-commits]

https://github.com/ldionne updated https://github.com/llvm/llvm-project/pull/68920

>From d1c371b9783777d90647b5d93b16266fe053287f Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2 at gmail.com>
Date: Thu, 12 Oct 2023 10:29:40 -0700
Subject: [PATCH] [libc++] Move the check-generated-files job to Github Actions

This allows running these quick checks faster than in our Buildkite
pipeline, which has much more latency. This will also avoid blocking
the rest of the testing pipeline in case the generated-files checks
are failing.
---
 .../libcxx-check-generated-files.yml          | 25 +++++++++++++++++++
 libcxx/utils/ci/buildkite-pipeline.yml        | 19 --------------
 2 files changed, 25 insertions(+), 19 deletions(-)
 create mode 100644 .github/workflows/libcxx-check-generated-files.yml

diff --git a/.github/workflows/libcxx-check-generated-files.yml b/.github/workflows/libcxx-check-generated-files.yml
new file mode 100644
index 000000000000000..1e81d06af266db2
--- /dev/null
+++ b/.github/workflows/libcxx-check-generated-files.yml
@@ -0,0 +1,25 @@
+name: "Check libc++ generated files"
+on:
+  pull_request:
+    paths:
+      - 'libcxx/**'
+
+jobs:
+  check_generated_files:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fetch LLVM sources
+        uses: actions/checkout at v4
+        with:
+          fetch-depth: 2
+
+      - name: Install clang-format
+        uses: aminya/setup-cpp at v1
+        with:
+          clangformat: 17.0.1
+
+      - name: Install Ninja
+        uses: llvm/actions/install-ninja
+
+      - name: Check generated files
+        run: libcxx/utils/ci/run-buildbot check-generated-output
diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index 7a125d16af59493..460c5a8c4301dc4 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -26,31 +26,12 @@ env:
     # LLVM POST-BRANCH bump version
     # LLVM POST-BRANCH add compiler test for ToT - 1, e.g. "Clang 17"
     # LLVM RELEASE bump remove compiler ToT - 3, e.g. "Clang 15"
-    LLVM_STABLE_VERSION: "17" # Used for tooling, update after the RELEASE.
     LLVM_HEAD_VERSION: "18"   # Used compiler, update POST-BRANCH.
     GCC_STABLE_VERSION: "13"
 steps:
   #
   # Light pre-commit tests for things like forgetting to update generated files.
   #
-  - label: "Generated output"
-    command: "libcxx/utils/ci/run-buildbot check-generated-output"
-    artifact_paths:
-      - "**/generated_output.patch"
-      - "**/generated_output.status"
-    env:
-        CC: "clang-${LLVM_HEAD_VERSION}"
-        CXX: "clang++-${LLVM_HEAD_VERSION}"
-        CLANG_FORMAT: "/usr/bin/clang-format-${LLVM_STABLE_VERSION}"
-    agents:
-      queue: "libcxx-builders"
-      os: "linux"
-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
-          limit: 2
-    timeout_in_minutes: 120
-
   - label: "Documentation"
     command: "libcxx/utils/ci/run-buildbot documentation"
     artifact_paths: