Some improvements:

MSVC fixes;
TurboFan enabled.

.github/workflows/cmake.yml

@@ -0,0 +1,99 @@
+# This starter workflow is for a CMake project running on multiple platforms. There is a different starter workflow if you just want a single platform.
+# See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-single-platform.yml
+name: CMake on multiple platforms
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      # Set fail-fast to false to ensure that feedback is delivered for all matrix combinations. Consider changing this to true when your workflow is stable.
+      fail-fast: false
+
+      # Set up a matrix to run the following 3 configurations:
+      # 1. <Windows, Release, latest MSVC compiler toolchain on the default runner image, default generator>
+      # 2. <Linux, Release, latest GCC compiler toolchain on the default runner image, default generator>
+      # 3. <Linux, Release, latest Clang compiler toolchain on the default runner image, default generator>
+      #
+      # To add more build types (Release, Debug, RelWithDebInfo, etc.) customize the build_type list.
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        build_type: [Release]
+        # c_compiler: [gcc, clang, cl]
+        include:
+          - os: windows-latest
+            c_compiler: cl
+            cpp_compiler: cl
+          - os: ubuntu-latest
+            c_compiler: gcc
+            cpp_compiler: g++
+          - os: macos-latest
+            c_compiler: clang
+            cpp_compiler: clang++
+        # exclude:
+        #   - os: windows-latest
+        #     c_compiler: gcc
+        #   - os: windows-latest
+        #     c_compiler: clang
+        #   - os: ubuntu-latest
+        #     c_compiler: cl
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup CMake
+        uses: lukka/get-cmake@latest
+
+      - name: Setup Windows dev command
+        if: ${{ runner.os == 'Windows' }}
+        uses: ilammy/msvc-dev-cmd@v1
+
+      - name: Set reusable strings
+        # Turn repeated input strings (such as the build output directory) into step outputs. These step outputs can be used throughout the workflow file.
+        id: strings
+        shell: bash
+        run: |
+          echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
+
+      - name: Setup cache
+        id: cache
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.strings.outputs.build-output-dir }}
+          key: ${{ runner.os }}-build
+
+      - name: Configure CMake
+        # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+        # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+        run: >
+          cmake -B ${{ steps.strings.outputs.build-output-dir }}
+          -GNinja
+          -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
+          -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
+          -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
+          -S ${{ github.workspace }}
+
+      - name: Patch
+        if: steps.cache.outputs.cache-hit != 'true'
+        # https://github.com/microsoft/vcpkg/issues/42251
+        # A MSVC issue causes v8 failed to compile
+        shell: bash
+        run: |
+          cd '${{ github.workspace }}'
+          patch -p0 < fix_msvc_19.42.patch
+
+      - name: Build
+        # Build your program with the given configuration. Note that --config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).
+        run: cmake --build ${{ steps.strings.outputs.build-output-dir }} --config ${{ matrix.build_type }}
+
+    # - name: Test
+    #   working-directory: ${{ steps.strings.outputs.build-output-dir }}
+    #   # Execute tests defined by the CMake configuration. Note that --build-config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).
+    #   # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+    #   run: ctest --build-config ${{ matrix.build_type }}

CMakeLists.txt

@@ -13,7 +13,6 @@ if(MSVC)
            v8/src/heap/base/asm/ia32/push_registers_masm.asm
            v8/src/heap/base/asm/x64/push_registers_masm.asm
     PROPERTY LANGUAGE ASM_MASM)
-
 endif()
 
 add_definitions("-DV8_ENABLE_WEBASSEMBLY -DV8_ADVANCED_BIGINT_ALGORITHMS -DV8_ENABLE_WASM_SIMD256_REVEC")
@@ -24,6 +23,14 @@ if(WIN32)
   add_definitions("-D_WIN32_WINNT=0x0602")
 endif()
 
+set(msvc-compile-options /utf-8
+/wd4661 /wd4819 /wd4267 /wd4996 /wd4244
+/wd4005 /wd4146 /wd4715 /wd4530 /wd4838
+/wd4506 /wd4309 /wd4312 /wd4334)
+add_compile_options("$<$<C_COMPILER_ID:MSVC>:${msvc-compile-options}>")
+add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:${msvc-compile-options}>")
+set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT Embedded)
+
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 
@@ -88,6 +95,7 @@ string(CONCAT is-x64 $<OR:
 >)
 
 option(V8_ENABLE_CONCURRENT_MARKING "Enable concurrent marking" ON)
+option(V8_ENABLE_TURBOFAN "Enable TurboFan" ON)
 option(V8_ENABLE_I18N "Enable Internationalization support")
 
 set(
@@ -105,6 +113,7 @@ set(
   $<${is-win}:NOMINMAX>
   $<$<AND:${is-win},${is-x64}>:V8_OS_WIN_X64>
   $<$<BOOL:${V8_ENABLE_CONCURRENT_MARKING}>:V8_CONCURRENT_MARKING>
+  $<$<BOOL:${V8_ENABLE_TURBOFAN}>:V8_ENABLE_TURBOFAN>
   $<${is-win}:V8_OS_WIN32>
 )
 
@@ -502,6 +511,10 @@ file(GLOB_RECURSE compiler-sources
 )
 list(FILTER compiler-sources EXCLUDE REGEX ".*backend/.*/.*[.]cc$")
 
+if(V8_ENABLE_TURBOFAN)
+  list(REMOVE_ITEM compiler-sources v8/src/compiler/turbofan-disabled.cc)
+endif()
+
 add_library(v8_compiler STATIC)
 target_sources(v8_compiler PRIVATE ${compiler-sources})
 target_compile_definitions(v8_compiler PRIVATE ${v8_defines} $<${is-msvc}:_HAS_EXCEPTIONS=0>)