[llvm][release] Add links to automatically built packages

.github/workflows/release-tasks.yml

@@ -111,3 +111,31 @@ jobs:
     # Called workflows don't have access to secrets by default, so we need to explicitly pass secrets that we use.
     secrets:
       RELEASE_TASKS_USER_TOKEN: ${{ secrets.RELEASE_TASKS_USER_TOKEN }}
+
+  uncomment-download-links:
+    name: Uncomment download links
+    runs-on: ubuntu-24.04
+    permissions:
+      contents: write # For updating the release message.
+    needs:
+      - validate-tag
+      - release-create
+      - release-binaries
+
+    steps:
+      - name: Install Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install python3-github
+
+      - name: Checkout LLVM
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        with:
+          sparse-checkout: llvm/utils/release/github-upload-release.py
+          sparse-checkout-cone-mode: false
+
+      - name: Uncomment Download Links
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        run: |
+          ./llvm/utils/release/./github-upload-release.py --token "$GITHUB_TOKEN" --release ${{ needs.validate-tag.outputs.release-version }} uncomment_download_links

llvm/utils/release/github-upload-release.py

@@ -45,19 +45,39 @@ def create_release(repo, release, tag=None, name=None, message=None):
         # Note that these lines are not length limited because if we do so, GitHub
         # assumes that should be how it is laid out on the page. We want GitHub to
         # do the reflowing for us instead.
+        #
+        # Once all the atuomatic binary builds have completed, the HTML comments
+        # with UPPERCASE markers in them will be removed to reveal the download
+        # links later. Other lines are surrounded in <!-- --> for release uploaders
+        # to manually uncomment when they upload that package.
         message = dedent(
             """\
-LLVM {release} Release
+## LLVM {release} Release
 
-## Package Types
+<!-- AUTOMATIC_DOWNLOAD_LINKS_BEGIN
+* [Linux x86_64](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-Linux-X64.tar.xz) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-Linux-X64.tar.xz.jsonl))
+* [Linux Arm64](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-Linux-ARM64.tar.xz) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-Linux-ARM64.tar.xz.jsonl))
+AUTOMATIC_DOWNLOAD_LINKS_END -->
+<!-- * [Linux Armv7-a](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/clang+llvm-{release}-armv7a-linux-gnueabihf.tar.gz) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}}/clang+llvm-{release}-armv7a-linux-gnueabihf.tar.gz.sig)) -->
 
-Each platform has one binary release package. The file name starts with either `LLVM-` or `clang+llvm-` and ends with the platform's name. For example, `LLVM-{release}-Linux-ARM64.tar.xz` contains LLVM binaries for Arm64 Linux.
+<!-- AUTOMATIC_DOWNLOAD_LINKS_BEGIN
+* [macOS Apple Silicon](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-macOS-ARM64.tar.xz) (ARM64) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-macOS-ARM64.tar.xz.jsonl))
+* [macOS Intel](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-macOS-X64.tar.xz) (x86-64) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-macOS-X64.tar.xz.jsonl))
+AUTOMATIC_DOWNLOAD_LINKS_END -->
+
+<!-- * Windows x64 (64-bit): [installer](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-win64.exe) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-win64.exe.sig)), [archive](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/clang+llvm-{release}-x86_64-pc-windows-msvc.tar.xz) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/clang+llvm-{release}-x86_64-pc-windows-msvc.tar.xz.sig)) -->
+<!-- * Windows x86 (32-bit): [installer](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-win32.exe) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-win32.exe.sig)) -->
+<!-- * Windows on Arm (ARM64): [installer](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-woa64.exe) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/LLVM-{release}-woa64.exe.sig)), [archive](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/clang+llvm-{release}-aarch64-pc-windows-msvc.tar.xz) ([signature](https://github.com/llvm/llvm-project/releases/download/llvmorg-{release}/clang+llvm-{release}-aarch64-pc-windows-msvc.tar.xz.sig)) -->
 
-Except for Windows. Where `LLVM-*.exe` is an installer intended for using LLVM as a toolchain and `clang+llvm-` contains the contents of the installer, plus libraries and tools not normally used in a toolchain. You most likely want the `LLVM-` installer, unless you are developing software which itself uses LLVM, in which case choose `clang+llvm-`.
+Download links will appear here once builds have completed. <!-- AUTOMATIC_DOWNLOAD_LINKS_PLACEHOLDER -->
+
+For any other variants of platform and architecture, check the full list of release packages at the bottom of this release page. If you do not find a release package for your platform, you may be able to find a community built package on the LLVM Discourse forum thread for this release. Remember that these are built by volunteers and may not always be available. If you rely on a platform or configuration that is not one of the defaults, we suggest you use the binaries that your platform provides, or build your own release packages.
+
+## Package Types
 
-If you do not find a release package for your platform, you may be able to find a community built package on the LLVM Discourse forum thread for this release. Remember that these are built by volunteers and may not always be available.
+Each platform has one binary release package. The file name starts with either `LLVM-` or `clang+llvm-` and ends with the platform's name. For example, `LLVM-{release}-Linux-ARM64.tar.xz` contains LLVM binaries for Arm64 Linux.
 
-If you rely on a platform or configuration that is not one of the defaults, we suggest you use the binaries that your platform provides, or build your own release packages.
+Except for Windows. Where `LLVM-*.exe` is an installer intended for using LLVM as a toolchain and the archive `clang+llvm-` contains the contents of the installer, plus libraries and tools not normally used in a toolchain. You most likely want the `LLVM-` installer, unless you are developing software which itself uses LLVM, in which case choose `clang+llvm-`.
 
 In addition, source archives are available:
 * `<sub-project>-{release}.src.tar.xz` are archives of the sources of specific sub-projects of `llvm-project` (except for `test-suite` which is an archive of the [LLVM Test Suite](https://github.com/llvm/llvm-test-suite)).
@@ -95,9 +115,35 @@ def upload_files(repo, release, files):
         print("Done")
 
 
+def uncomment_download_links(repo, release):
+    release = repo.get_release("llvmorg-{}".format(release))
+
+    new_message = []
+    to_remove = [
+        "AUTOMATIC_DOWNLOAD_LINKS_BEGIN",
+        "AUTOMATIC_DOWNLOAD_LINKS_END",
+        "AUTOMATIC_DOWNLOAD_LINKS_PLACEHOLDER",
+    ]
+    for line in release.body.splitlines():
+        for comment in to_remove:
+            if comment in line:
+                break
+        else:
+            new_message.append(line)
+
+    release.update_release(
+        name=release.title,
+        message="\n".join(new_message),
+        draft=release.draft,
+        prerelease=release.prerelease,
+    )
+
+
 parser = argparse.ArgumentParser()
 parser.add_argument(
-    "command", type=str, choices=["create", "upload", "check-permissions"]
+    "command",
+    type=str,
+    choices=["create", "upload", "check-permissions", "uncomment_download_links"],
 )
 
 # All args
@@ -137,3 +183,5 @@ def upload_files(repo, release, files):
     create_release(llvm_repo, args.release)
 if args.command == "upload":
     upload_files(llvm_repo, args.release, args.files)
+if args.command == "uncomment_download_links":
+    uncomment_download_links(llvm_repo, args.release)