feat: [NPP02-5848] sync with Google XNNPACK upstream

.github/workflows/build.yml

@@ -253,6 +253,67 @@ jobs:
         run: ccache -s
         shell: bash
 
+  gn-windows-x86_64:
+    runs-on: 'windows-2022-8core'
+    timeout-minutes: 30
+    env:
+      DEPOT_TOOLS_WIN_TOOLCHAIN: 0
+    steps:
+      - name: Setup ccache
+        uses: hendrikmuhs/ccache-action@v1.2
+        with:
+          key: ${{ github.job }}
+          max-size: "500M"
+          save: ${{ inputs.update-caches }}
+      - name: Install Depot Tools
+        uses: newkdev/setup-depot-tools@v1.0.1
+      - name: Write .gclient
+        shell: powershell
+        run: |
+          Set-Content -Path .gclient -Value "
+          solutions = [
+            { 'name': 'XNNPACK',
+              'url': 'https://github.com/google/XNNPACK',
+              'deps_file': 'DEPS',
+              'managed': False,
+              'custom_deps': {},
+            },
+          ]
+          "
+        working-directory: ${{ github.workspace }}
+      - name: Setup build environment
+        shell: bash
+        run: |
+          echo "VCVARSALL=$(vswhere -products \* -latest -property installationPath)\\VC\\Auxiliary\\Build\\vcvarsall.bat" >> $GITHUB_ENV
+      - name: Sync to commit and run hooks
+        shell: powershell
+        run: gclient sync -vv --revision $env:GITHUB_SHA
+      - name: Write LASTCHANGE files
+        shell: powershell
+        run: |
+          $LastChangeContents = @(
+            "LASTCHANGE=$env:GITHUB_SHA-$env:GITHUB_REF_NAME"
+            "LASTCHANGE_YEAR=$(git log -1 --pretty=%Y)"
+          )
+
+          Set-Content -Path build/util/LASTCHANGE -Value $LastChangeContents
+          $UnixTime = git log -1 --pretty=%ct
+          Set-Content -Path build/util/LASTCHANGE.committime -Value $UnixTime
+        working-directory: ${{ github.workspace }}\XNNPACK
+      - name: Generate build files (x64, dchecks)
+        run: |
+          gn gen --check --args="is_debug=false symbol_level=0 dcheck_always_on=true cc_wrapper=\`"ccache\`" target_cpu=\`"x64\`"" out/x64.dchecks
+        working-directory: ${{ github.workspace }}\XNNPACK
+        shell: powershell
+      - name: Build all targets (x64 Release + debug checks)
+        run: |
+          autoninja -C out/x64.dchecks
+        working-directory: ${{ github.workspace }}\XNNPACK
+      - name: Run tests (x64)
+        run: |
+          python3 scripts/run-gn-tests.py out/x64.dchecks
+        working-directory: ${{ github.workspace }}\XNNPACK
+
   cmake-macos-arm64:
     runs-on: macos-latest
     timeout-minutes: 60

BUILD.gn

@@ -97,8 +97,10 @@ declare_args() {
   # Enables AVX2 support for x86 processors
   xnnpack_enable_avx2 = target_cpu == "x64" || target_cpu == "x86"
 
-  # Enables AVX512 support for x86 processors
-  xnnpack_enable_avx512 = target_cpu == "x64" || target_cpu == "x86"
+  # Enables AVX-512 support for x86 processors. Temporarily switched
+  # off on Windows because some AVX-512 assembly kernels contain unsupported
+  # syntax. TODO: crbug.com/523327327 - Re-enable this.
+  xnnpack_enable_avx512 = target_cpu == "x64" && !is_win
 
   # Enables VNNI extensions, which are separate from AVX512-VNNI
   xnnpack_enable_avx_vnni = target_cpu == "x64" || target_cpu == "x86"
@@ -177,7 +179,6 @@ config("xnnpack_private_config") {
       "XNN_ENABLE_ARM_I8MM=1",
       "XNN_ENABLE_ASSEMBLY=1",
       "XNN_ENABLE_ARM_FP16_VECTOR=1",
-      "XNN_ENABLE_RNDNU16=1",
     ]
     if (xnnpack_enable_arm_kleidiai) {
       defines += [ "XNN_ENABLE_KLEIDIAI=1" ]
@@ -918,6 +919,7 @@ xnnpack_source_set("scalar_microkernels") {
   deps = [
     ":microkernel_defs",
     ":microkernel_headers",
+    "//third_party/fxdiv",
   ]
   sources = ALL_SCALAR_MICROKERNEL_SRCS
 }
@@ -965,6 +967,7 @@ xnnpack_source_set("xnnpack") {
     ":scalar_microkernels",
     ":subgraph",
     ":table",
+    "//third_party/fxdiv",
   ]
   if (xnnpack_enable_arm_kleidiai) {
     deps += [ "//third_party/kleidiai" ]
@@ -1025,7 +1028,7 @@ xnnpack_source_set("xnnpack") {
     if (xnnpack_enable_avx512) {
       deps += [ ":avx512_microkernels" ]
     }
-    if (current_cpu == "x64") {
+    if (!is_win) {
       sources += AMD64_ASM_MICROKERNEL_SRCS
     }
     sources += ALL_SSE_MICROKERNEL_SRCS

DEPS

@@ -318,6 +318,13 @@ deps = {
 }
 
 hooks = [
+  {
+    # Update the Windows toolchain if necessary.
+    'name': 'win_toolchain',
+    'pattern': '.',
+    'condition': 'checkout_win',
+    'action': ['python3', 'build/vs_toolchain.py', 'update', '--force'],
+  },
   {
     # Update the Mac toolchain if necessary.
     'name': 'mac_toolchain',