CANN: Add x86 build ci (#12950)

* CANN: Add x86 build ci

* CANN: fix code format

.github/workflows/build.yml

@@ -1767,15 +1767,16 @@ jobs:
     defaults:
       run:
         shell: bash -el {0}
-    runs-on: ubuntu-24.04-arm
     strategy:
       matrix:
+        arch: [x86, aarch64]
         cann:
           - '8.1.RC1.alpha001-910b-openeuler22.03-py3.10'
         device:
           - 'ascend910b3'
         build:
           - 'Release'
+    runs-on: ${{ matrix.arch == 'aarch64' && 'ubuntu-24.04-arm' || 'ubuntu-24.04' }}
     container: ascendai/cann:${{ matrix.cann }}
     steps:
       - name: Checkout

ggml/src/ggml-cann/ggml-cann.cpp

@@ -329,6 +329,7 @@ struct ggml_cann_pool_buf_prio : public ggml_cann_pool {
      * @param size Size of the buffer to free.
      */
     void free(void* ptr, size_t size) override {
+        GGML_UNUSED(size);
         auto it = buffer_pool.find(ptr);
         if (it == buffer_pool.end()) {
             GGML_ABORT("cann pool[%d]: buffer %p not found in pool\n", device, ptr);
@@ -531,6 +532,7 @@ struct ggml_cann_pool_buf : public ggml_cann_pool {
      * @param size Size of the buffer to free.
      */
     void free(void* ptr, size_t size) override {
+        GGML_UNUSED(size);
         for (int i = 0; i < MAX_BUFFERS; ++i) {
             ggml_cann_buffer& b = buffer_pool[i];
             if (b.ptr != ptr) {