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Andarwinux · Mar 21, 2024 · c230bc2 · c230bc2
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diff --git a/.github/workflows/llvm_clang.yml b/.github/workflows/llvm_clang.yml
@@ -18,10 +18,16 @@ jobs:
     strategy:
       fail-fast: false
     container:
-        image: docker://ghcr.io/shinchiro/archlinux:latest
+        image: cachyos/cachyos-v3:latest
     steps:
       - name: Setup git config
         run: |
+          sudo pacman -Syu --noconfirm
+          sudo pacman -S --noconfirm --needed base-devel git gyp ninja cmake ragel yasm nasm asciidoc enca gperf unzip xz llvm clang lld libc++ libc++abi python-pip curl wget python-cairo mimalloc ccache
+          mkdir -p /home/opt/7zip
+          wget -qO - https://www.7-zip.org/a/7z2301-linux-x64.tar.xz | tar -xJf - -C /home/opt/7zip 7zzs
+          sudo ln -s /home/opt/7zip/7zzs /usr/bin/7z
+          pip3 install -U --break-system-packages setuptools rst2pdf mako jsonschema meson
           git config --global user.name "github-actions"
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git config --global pull.rebase true
@@ -33,103 +39,125 @@ jobs:
         with:
           ref: master
 
-      - name: Loading clang root
-        id: clang_root_cache
-        uses: actions/cache/restore@main
-        with:
-          path: clang_root
-          key: ${{ secrets.CACHE_VERSION }}-clang_root-${{ github.run_id }}
-          restore-keys: ${{ secrets.CACHE_VERSION }}-clang_root
-
-      - name: Loading x86_64 toolchain
-        id: x86_64_cache
-        uses: actions/cache/restore@main
-        with:
-          path: build_x86_64
-          key: ${{ secrets.CACHE_VERSION }}-clang-x86_64_toolchain-${{ github.run_id }}
-          restore-keys: ${{ secrets.CACHE_VERSION }}-clang-x86_64_toolchain
-
-      - name: Loading x86_64_v3 toolchain
-        id: x86_64_v3_cache
-        uses: actions/cache/restore@main
-        with:
-          path: build_x86_64_v3
-          key: ${{ secrets.CACHE_VERSION }}-clang-x86_64_v3_toolchain-${{ github.run_id }}
-          restore-keys: ${{ secrets.CACHE_VERSION }}-clang-x86_64_v3_toolchain
-
-      - name: Loading i686 toolchain
-        id: i686_cache
-        uses: actions/cache/restore@main
-        with:
-          path: build_i686
-          key: ${{ secrets.CACHE_VERSION }}-clang-i686_toolchain-${{ github.run_id }}
-          restore-keys: ${{ secrets.CACHE_VERSION }}-clang-i686_toolchain
-
-      - name: Loading aarch64 toolchain
-        id: aarch64_cache
-        if: false
-        uses: actions/cache/restore@main
-        with:
-          path: build_aarch64
-          key: ${{ secrets.CACHE_VERSION }}-clang-aarch64_toolchain-${{ github.run_id }}
-          restore-keys: ${{ secrets.CACHE_VERSION }}-clang-aarch64_toolchain
-
-      - name: Loading repository cache
-        id: repository_cache
-        if: false
-        uses: actions/cache/restore@main
-        with:
-          path: src_packages
-          key: ${{ secrets.CACHE_VERSION }}-repository-${{ github.run_id }}
-          restore-keys: ${{ secrets.CACHE_VERSION }}-repository
-
       - name: Running custom command
         if: ${{ github.event.inputs.command != '' }}
         continue-on-error: true
         run: ${{ github.event.inputs.command }}
 
-      - name: Building LLVM
-        if: ${{ steps.clang_root_cache.outputs.cache-matched-key == '' }}
+      - name: Building LLVM with ThinLTO and IR Profile Instrumentation
         run: |
-          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=GEN -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
           ninja -C build_x86_64 llvm
-          ninja -C build_x86_64 rustup
-          ninja -C build_x86_64 cargo-clean
+          ninja -C build_x86_64 llvm-fullclean || true
 
       - name: Building x86_64 toolchain
-        if: ${{ steps.x86_64_cache.outputs.cache-matched-key == '' }}
         run: |
-          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=GEN -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
           ninja -C build_x86_64 llvm-clang
+          rm -rf build_x86_64/toolchain/{mingw-w64-headers,mingw-w64-crt,winpthreads,llvm-libcxx,llvm-compiler-rt-builtin}-prefix || true
+
+      - name: Building aarch64 toolchain
+        run: |
+          cmake -DTARGET_ARCH=aarch64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=GEN -DGCC_ARCH=armv8.2-a -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_aarch64/aarch64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_aarch64 -S $PWD
+          ninja -C build_aarch64 llvm-clang
+          rm -rf build_aarch64/toolchain/{mingw-w64-headers,mingw-w64-crt,winpthreads,llvm-libcxx,llvm-compiler-rt-builtin}-prefix || true
 
-      - name: Building x86_64-v3 toolchain
-        if: ${{ steps.x86_64_v3_cache.outputs.cache-matched-key == '' }}
+      - name: PGO training with shaderc x86_64
         run: |
-          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DCOMPILER_TOOLCHAIN=clang -DGCC_ARCH=x86-64-v3 -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64_v3/x86_64_v3-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64_v3 -S $PWD
-          ninja -C build_x86_64_v3 llvm-clang
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=GEN -DCLANG_PACKAGES_LTO=ON -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          ninja -C build_x86_64 shaderc
+          ninja -C build_x86_64 shaderc-fullclean || true
+          rm -rf $PWD/build_x86_64/x86_64-w64-mingw32/thinlto || true
 
-      - name: Building i686 toolchain
-        if: ${{ steps.i686_cache.outputs.cache-matched-key == '' }}
+      - name: PGO training with shaderc aarch64
         run: |
-          cmake -DTARGET_ARCH=i686-w64-mingw32 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_i686/i686-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_i686 -S $PWD
-          ninja -C build_i686 llvm-clang
+          cmake -DTARGET_ARCH=aarch64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=GEN -DCLANG_PACKAGES_LTO=ON -DGCC_ARCH=armv8.2-a -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_aarch64/aarch64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_aarch64 -S $PWD
+          ninja -C build_aarch64 shaderc
+          ninja -C build_aarch64 shaderc-fullclean || true
+          rm -rf $PWD/build_aarch64/aarch64-w64-mingw32/thinlto || true
 
-      - name: Building aarch64 toolchain
-        if: false
+      - name: Merging IR profraw to profdata
+        run: |
+          llvm-profdata merge $PWD/clang_root/profiles/*.profraw -o llvm-ir.profdata
+          rm -rf $PWD/clang_root/profiles/* || true
+
+      - name: Building LLVM with ThinLTO and CSIR Profile Instrumentation
+        run: |
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=CSGEN -DLLVM_PROFDATA_FILE=llvm-ir.profdata -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          ninja -C build_x86_64 llvm
+          ninja -C build_x86_64 llvm-fullclean || true
+
+      - name: Re-Building x86_64 toolchain
+        run: |
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=CSGEN -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          ninja -C build_x86_64 llvm-clang
+          rm -rf build_x86_64/toolchain/{mingw-w64-headers,mingw-w64-crt,winpthreads,llvm-libcxx,llvm-compiler-rt-builtin}-prefix || true
+
+      - name: Re-Building aarch64 toolchain
         run: |
-          cmake -DTARGET_ARCH=aarch64-w64-mingw32 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_aarch64/aarch64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_aarch64 -S $PWD
+          cmake -DTARGET_ARCH=aarch64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=CSGEN -DGCC_ARCH=armv8.2-a -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_aarch64/aarch64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_aarch64 -S $PWD
           ninja -C build_aarch64 llvm-clang
+          rm -rf build_aarch64/toolchain/{mingw-w64-headers,mingw-w64-crt,winpthreads,llvm-libcxx,llvm-compiler-rt-builtin}-prefix || true
+
+      - name: CSPGO training with shaderc x86_64
+        run: |
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=CSGEN -DCLANG_PACKAGES_LTO=ON -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          ninja -C build_x86_64 shaderc
+          ninja -C build_x86_64 shaderc-fullclean || true
+          rm -rf $PWD/build_x86_64/x86_64-w64-mingw32/thinlto || true
+
+      - name: CSPGO training with shaderc aarch64
+        run: |
+          cmake -DTARGET_ARCH=aarch64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=CSGEN -DCLANG_PACKAGES_LTO=ON -DGCC_ARCH=armv8.2-a -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_aarch64/aarch64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_aarch64 -S $PWD
+          ninja -C build_aarch64 shaderc
+          ninja -C build_aarch64 shaderc-fullclean || true
+          rm -rf $PWD/build_aarch64/aarch64-w64-mingw32/thinlto || true
+
+      - name: Merging CSIR profraw to profdata
+        run: |
+          llvm-profdata merge $PWD/clang_root/profiles/*.profraw llvm-ir.profdata -o llvm-csir.profdata
+          rm -rf $PWD/clang_root/profiles/* || true
+          echo "llvm-csir_path=$(echo $PWD/llvm-csir.profdata)" >> $GITHUB_ENV
+
+      - name: Building LLVM with ThinLTO and CSPGO
+        run: |
+          cmake -DTARGET_ARCH=x86_64-w64-mingw32 -DLLVM_ENABLE_LTO=Thin -DLLVM_ENABLE_PGO=USE -DLLVM_PROFDATA_FILE=llvm-csir.profdata -DGCC_ARCH=x86-64-v3 -DCOMPILER_TOOLCHAIN=clang -DCMAKE_INSTALL_PREFIX=$PWD/clang_root -DMINGW_INSTALL_PREFIX=$PWD/build_x86_64/x86_64-w64-mingw32 -DSINGLE_SOURCE_LOCATION=$PWD/src_packages -DRUSTUP_LOCATION=$PWD/clang_root/install_rustup -G Ninja -B build_x86_64 -S $PWD
+          ninja -C build_x86_64 llvm
+          ninja -C build_x86_64 llvm-fullclean || true
+          echo "llvm_path=$(echo $PWD/clang_root/bin/llvm)" >> $GITHUB_ENV
+
+      - name: Upload llvm
+        uses: ncipollo/release-action@v1
+        with:
+          prerelease: false
+          artifacts: ${{ env.llvm_path }}
+          replacesArtifacts: true
+          tag: llvm
+          name: llvm
+          allowUpdates: true
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Upload llvm profdata
+        uses: ncipollo/release-action@v1
+        with:
+          prerelease: false
+          artifacts: ${{ env.llvm-csir_path }}
+          replacesArtifacts: true
+          tag: llvm-profdata
+          name: llvm-profdata
+          allowUpdates: true
+          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Cleanup
         run: |
-          rm -rf {build_i686,build_x86_64,build_x86_64_v3,build_aarch64}/{toolchain,packages} || true
+          rm -rf {build_x86_64,build_aarch64}/{toolchain,packages} || true
+          rm -rf $PWD/clang_root/llvm-thinlto || true
 
       - name: Collecting logs
         if: always()
         run: |
-          mkdir -p build_x86_64_logs build_i686_logs build_aarch64_logs
+          mkdir -p build_x86_64_logs build_aarch64_logs
           cp -fr $(find build_x86_64 -type f -iname "*-*.log") build_x86_64_logs || true
-          cp -fr $(find build_i686 -type f -iname "*-*.log") build_i686_logs || true
           cp -fr $(find build_aarch64 -type f -iname "*-*.log") build_aarch64_logs || true
           7z a -m0=lzma2 -mx=9 -ms=on logs.7z build*logs
 
@@ -146,55 +174,3 @@ jobs:
         with:
           path: clang_root
           key: ${{ secrets.CACHE_VERSION }}-clang_root-${{ github.run_id }}
-
-      - name: Saving x86_64 toolchain
-        uses: actions/cache/save@main
-        with:
-          path: build_x86_64
-          key: ${{ secrets.CACHE_VERSION }}-clang-x86_64_toolchain-${{ github.run_id }}
-
-      - name: Saving x86_64_v3 toolchain
-        uses: actions/cache/save@main
-        with:
-          path: build_x86_64_v3
-          key: ${{ secrets.CACHE_VERSION }}-clang-x86_64_v3_toolchain-${{ github.run_id }}
-
-      - name: Saving i686 toolchain
-        uses: actions/cache/save@main
-        with:
-          path: build_i686
-          key: ${{ secrets.CACHE_VERSION }}-clang-i686_toolchain-${{ github.run_id }}
-
-      - name: Saving aarch64 toolchain
-        if: false
-        uses: actions/cache/save@main
-        with:
-          path: build_aarch64
-          key: ${{ secrets.CACHE_VERSION }}-clang-aarch64_toolchain-${{ github.run_id }}
-
-      - name: Saving repository cache
-        if: false
-        uses: actions/cache/save@main
-        with:
-          path: src_packages
-          key: ${{ secrets.CACHE_VERSION }}-repository-${{ github.run_id }}
-
-  call_workflow:
-    name: Run mpv_clang
-    runs-on: ubuntu-latest
-    needs: build_llvm
-    env:
-      GH_TOKEN: ${{ github.token }}
-    steps:
-      - name: Run mpv_clang.yml
-        run: |
-          curl -u shinchiro:$GH_TOKEN -X POST -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/shinchiro/mpv-winbuild-cmake/actions/workflows/mpv_clang.yml/dispatches -d @- <<EOF
-          {
-            "ref": "master",
-            "inputs": {
-              "sourceforge": "false",
-              "github_release": "false",
-              "mpv_tarball": "false"
-            }
-          }
-          EOF
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -28,7 +28,7 @@ endif()
 if(TARGET_CPU STREQUAL "x86_64")
     set(TARGET_CPU_FAMILY "x86_64")
     set(TARGET_BITS 64)
-    set(GCC_ARCH "x86-64" CACHE STRING "Target architecture for x86_64")
+    set(GCC_ARCH "x86-64-v3" CACHE STRING "Target architecture for x86_64")
     string(REGEX MATCH "-v3" x86_64_LEVEL ${GCC_ARCH})
 elseif(TARGET_CPU STREQUAL "i686")
     set(TARGET_CPU_FAMILY "x86")
@@ -39,6 +39,12 @@ elseif(TARGET_CPU STREQUAL "aarch64")
     set(GCC_ARCH "armv8.2-a" CACHE STRING "Target architecture for aarch64")
 endif()
 
+if(GCC_ARCH MATCHES "86" OR GCC_ARCH MATCHES "arm")
+    set(M_TUNE "generic" CACHE STRING "mtune")
+else()
+    set(M_TUNE ${GCC_ARCH} CACHE STRING "mtune")
+endif()
+
 processorcount(CPU_COUNT)
 if(CPU_COUNT EQUAL 0)
     set(CPU_COUNT 1)
@@ -66,22 +72,45 @@ set(MINGW_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX}/${TARGET_ARCH} CACHE STRING "Ta
 set(SINGLE_SOURCE_LOCATION "" CACHE STRING "Repository or tarball stored path")
 set(RUSTUP_LOCATION "${CMAKE_CURRENT_BINARY_DIR}/install_rustup" CACHE STRING "Rust toolchain path")
 set(LLVM_ENABLE_LTO "OFF" CACHE STRING "OFF, ON, Thin and Full")
-option(CLANG_PACKAGES_LTO "Build each package with ThinLTO." OFF)
+set(LLVM_ENABLE_PGO "OFF" CACHE STRING "OFF, GEN, CSGEN, USE")
+if(LLVM_ENABLE_PGO STREQUAL "GEN" OR LLVM_ENABLE_PGO STREQUAL "CSGEN")
+    set(LLVM_PROFILE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/profiles/" CACHE PATH "")
+endif()
+if(LLVM_ENABLE_PGO STREQUAL "USE" OR LLVM_ENABLE_PGO STREQUAL "CSGEN")
+    set(LLVM_PROFDATA_FILE "" CACHE FILEPATH "")
+    if(NOT (EXISTS ${LLVM_PROFDATA_FILE}))
+        set(LLVM_ENABLE_PGO OFF)
+    endif()
+endif()
+option(CLANG_PACKAGES_LTO "Build each package with ThinLTO." ON)
+set(CLANG_PACKAGES_PGO "OFF" CACHE STRING "OFF, GEN, USE")
+if(CLANG_PACKAGES_PGO STREQUAL "GEN")
+    set(CLANG_PACKAGES_PROFILE_DATA_DIR "profiles/" CACHE STRING "")
+elseif(CLANG_PACKAGES_PGO STREQUAL "USE")
+    set(CLANG_PACKAGES_PROFDATA_FILE "" CACHE FILEPATH "")
+    if(NOT (EXISTS ${CLANG_PACKAGES_PROFDATA_FILE}))
+        set(CLANG_PACKAGES_PGO OFF)
+    endif()
+endif()
 option(ENABLE_CCACHE "Enable ccache" OFF)
 if(ENABLE_CCACHE)
+    option(LLVM_ENABLE_CCACHE "Build LLVM with ccache" ON)
     find_program(CCACHE_EXISTS ccache NO_CACHE)
     configure_file(${CMAKE_CURRENT_SOURCE_DIR}/ccache_conf.in ${MINGW_INSTALL_PREFIX}/ccache/ccache.conf @ONLY)
     if(NOT CCACHE_EXISTS)
         set(ENABLE_CCACHE OFF)
+        set(LLVM_ENABLE_CCACHE OFF)
     endif()
+else()
+    set(LLVM_ENABLE_CCACHE OFF)
 endif()
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/toolchain.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/toolchain.cmake @ONLY)
 set(TOOLCHAIN_FILE ${CMAKE_CURRENT_BINARY_DIR}/toolchain.cmake)
 set(CLANG_FLAGS "" CACHE STRING "These flags will be added to the end of the clang args")
 set(LLD_FLAGS "" CACHE STRING "These flags will be added to the end of the lld args")
 set(GCC_FLAGS "" CACHE STRING "These flags will be added to the end of the gcc args")
 set(BFD_FLAGS "" CACHE STRING "These flags will be added to the end of the bfd args")
-set(COMPILER_TOOLCHAIN "gcc" CACHE STRING "gcc or clang")
+set(COMPILER_TOOLCHAIN "clang" CACHE STRING "gcc or clang")
 if(COMPILER_TOOLCHAIN STREQUAL "gcc")
     if(TARGET_ARCH STREQUAL "aarch64-w64-mingw32")
         message(FATAL_ERROR "The target architecture is unavailable for this toolchain.")