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

[Schrodinger ZHU Yifan via llvm-commits]

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

Add the following workflows:

- `fullbuild` on aarch64 ubuntu
- `overlay` on windows 2025
- `overlay` on aarch64 ubuntu

>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] [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