[llvm] [Github][CI] Upload artifacts directory for premerge workflow (PR #135538)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/135538

The premerge pipeline currently creates an artifacts directory with some
statistics that gets uploaded on the buildkite side for later
inspection. This patch adds support for this on the Github side by using
the upload artifacts action.


>From 1b3e309986d9db726b9589717f82f74673ee719a Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Sun, 13 Apr 2025 10:53:35 +0000
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.4
---
 .github/workflows/premerge.yaml | 7 +++++++
 bolt/CMakeLists.txt             | 1 +
 2 files changed, 8 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index b7d2c7154762e..51333d9c4c397 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -65,6 +65,13 @@ jobs:
           export CXX=/opt/llvm/bin/clang++
 
           ./.ci/monolithic-linux.sh "${projects_to_build}" "${project_check_targets}" "${runtimes_to_build}" "${runtimes_check_targets}"
+            - name: "Upload artifact"
+      - name: Upload Artifacts
+        uses: actions/upload-artifact at 65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
+        with:
+          name: Premerge Artifacts
+          path: artifacts/
+          retention-days: 5
 
   premerge-checks-windows:
     name: Windows Premerge Checks (Test Only - Please Ignore Results)
diff --git a/bolt/CMakeLists.txt b/bolt/CMakeLists.txt
index f5ffa81227064..b5e202156fc60 100644
--- a/bolt/CMakeLists.txt
+++ b/bolt/CMakeLists.txt
@@ -1,3 +1,4 @@
+# testing
 cmake_minimum_required(VERSION 3.20.0)
 
 set(LLVM_SUBPROJECT_TITLE "BOLT")