[llvm] [libc][workflow] improve ci coverage with windows-2024 and arm ubuntu (PR #123745)

[Schrodinger ZHU Yifan via llvm-commits]

https://github.com/SchrodingerZhu updated https://github.com/llvm/llvm-project/pull/123745

>From 6ef0df0d884a6fa5a38aac92a845cd6542f7ba96 Mon Sep 17 00:00:00 2001
From: Schrodinger ZHU Yifan <i at zhuyi.fan>
Date: Tue, 21 Jan 2025 12:33:14 +0000
Subject: [PATCH 1/2] [libc][workflow] improve ci coverage with windows-2024
 and arm ubuntu

---
 .github/workflows/libc-fullbuild-tests.yml | 8 ++++++--
 .github/workflows/libc-overlay-tests.yml   | 8 ++++++++
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/libc-fullbuild-tests.yml b/.github/workflows/libc-fullbuild-tests.yml
index 58e15ce29546ef..1db69665ae186d 100644
--- a/.github/workflows/libc-fullbuild-tests.yml
+++ b/.github/workflows/libc-fullbuild-tests.yml
@@ -11,12 +11,16 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-24.04
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         include:
-          - c_compiler: clang
+          - os: ubuntu-24.04
+            c_compiler: clang
+            cpp_compiler: clang++
+          - os: ubuntu-24.04-arm
+            c_compiler: clang
             cpp_compiler: clang++
           # TODO: add back gcc build when it is fixed
           # - c_compiler: gcc
diff --git a/.github/workflows/libc-overlay-tests.yml b/.github/workflows/libc-overlay-tests.yml
index 8b59d76aed4a88..62c99742f7a6cc 100644
--- a/.github/workflows/libc-overlay-tests.yml
+++ b/.github/workflows/libc-overlay-tests.yml
@@ -22,10 +22,18 @@ jobs:
             compiler:
               c_compiler: clang
               cpp_compiler: clang++
+          - os: ubuntu-24.04-arm
+            compiler:
+              c_compiler: clang
+              cpp_compiler: clang++
           - os: windows-2022
             compiler:
               c_compiler: clang-cl
               cpp_compiler: clang-cl
+          - os: windows-2025
+            compiler:
+              c_compiler: clang-cl
+              cpp_compiler: clang-cl
           - os: macos-14
             compiler:
               c_compiler: clang

>From d26214b353f5a00fbb7c75cd61a4a3a0d25b8aad Mon Sep 17 00:00:00 2001
From: Schrodinger ZHU Yifan <i at zhuyi.fan>
Date: Tue, 21 Jan 2025 12:42:12 +0000
Subject: [PATCH 2/2] skip ccache on arm64

---
 .github/workflows/libc-fullbuild-tests.yml | 7 +++++++
 .github/workflows/libc-overlay-tests.yml   | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/.github/workflows/libc-fullbuild-tests.yml b/.github/workflows/libc-fullbuild-tests.yml
index 1db69665ae186d..9cb1dd32b1e2a8 100644
--- a/.github/workflows/libc-fullbuild-tests.yml
+++ b/.github/workflows/libc-fullbuild-tests.yml
@@ -36,6 +36,7 @@ jobs:
     # frequent small object writes.
     - name: Setup ccache
       uses: hendrikmuhs/ccache-action at v1.2
+      if: runner.arch == 'X64'
       with:
         max-size: 1G
         key: libc_fullbuild_${{ matrix.c_compiler }}
@@ -46,10 +47,16 @@ jobs:
     # - Debian has a multilib setup, so we need to symlink the asm directory.
     #   For more information, see https://wiki.debian.org/Multiarch/LibraryPathOverview
     - name: Prepare dependencies (Ubuntu)
+      shell: bash
       run: |
         sudo apt-get update
         sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build linux-libc-dev
         sudo ln -sf /usr/include/$(uname -p)-linux-gnu/asm /usr/include/asm
+        if [[ $(uname -m) == 'aarch64' ]]; then
+          wget https://github.com/mozilla/sccache/releases/download/v0.9.1/sccache-v0.9.1-aarch64-unknown-linux-musl.tar.gz
+          tar xvaf sccache-v0.9.1-aarch64-unknown-linux-musl.tar.gz
+          sudo cp sccache-v0.9.1-aarch64-unknown-linux-musl/sccache /usr/bin
+        fi
 
     - name: Set reusable strings
       id: strings
diff --git a/.github/workflows/libc-overlay-tests.yml b/.github/workflows/libc-overlay-tests.yml
index 62c99742f7a6cc..1fc77860a3cfe4 100644
--- a/.github/workflows/libc-overlay-tests.yml
+++ b/.github/workflows/libc-overlay-tests.yml
@@ -51,6 +51,7 @@ jobs:
     # frequent small object writes.
     - name: Setup ccache
       uses: hendrikmuhs/ccache-action at v1
+      if: runner.arch == 'X64'
       with:
         max-size: 1G
         key: libc_overlay_build_${{ matrix.os }}_${{ matrix.compiler.c_compiler }}
@@ -62,6 +63,11 @@ jobs:
       run: |
         sudo apt-get update
         sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build
+        if [[ $(uname -m) == 'aarch64' ]]; then
+          wget https://github.com/mozilla/sccache/releases/download/v0.9.1/sccache-v0.9.1-aarch64-unknown-linux-musl.tar.gz
+          tar xvaf sccache-v0.9.1-aarch64-unknown-linux-musl.tar.gz
+          sudo cp sccache-v0.9.1-aarch64-unknown-linux-musl/sccache /usr/bin
+        fi
     
     # Chocolatey is shipped with Windows runners. Windows Server 2025 recommends WinGet.
     # Consider migrating to WinGet when Windows Server 2025 is available.