diff --git a/tools/v8_gypfiles/features.gypi b/tools/v8_gypfiles/features.gypi
index 3c383fd32f3b7f..7e71e9c46790ab 100644
--- a/tools/v8_gypfiles/features.gypi
+++ b/tools/v8_gypfiles/features.gypi
@@ -133,6 +133,9 @@
     # as per the --native-code-counters flag.
     'v8_enable_snapshot_native_code_counters%': 0,
 
+    # Use pre-generated static root pointer values from static-roots.h.
+    'v8_enable_static_roots%': 0,
+
     # Enable code-generation-time checking of types in the CodeStubAssembler.
     'v8_enable_verify_csa%': 0,
 
@@ -168,10 +171,6 @@
     # Enables various testing features.
     'v8_enable_test_features%': 0,
 
-    # Enable the Maglev compiler.
-    # Sets -dV8_ENABLE_MAGLEV
-    'v8_enable_maglev%': 0,
-
     # With post mortem support enabled, metadata is embedded into libv8 that
     # describes various parameters of the VM for use by debuggers. See
     # tools/gen-postmortem-metadata.py for details.
@@ -278,9 +277,19 @@
     # Sets --DV8_LITE_MODE.
     'v8_enable_lite_mode%': 0,
 
+    # Enable the Turbofan compiler.
+    # Sets -dV8_ENABLE_TURBOFAN
+    'v8_enable_turbofan%': 1,
+
+    # Enable the Maglev compiler.
+    # Sets -dV8_ENABLE_MAGLEV
+    'v8_enable_maglev%': 0,
+
     # Include support for WebAssembly. If disabled, the 'WebAssembly' global
     # will not be available, and embedder APIs to generate WebAssembly modules
-    # will fail.
+    # will fail. Also, asm.js will not be translated to WebAssembly and will be
+    # executed as standard JavaScript instead.
+    # Sets -dV8_ENABLE_WEBASSEMBLY.
     'v8_enable_webassembly%': 1,
 
     # Enable advanced BigInt algorithms, costing about 10-30 KiB binary size
@@ -428,6 +437,9 @@
       ['v8_enable_cet_shadow_stack==1', {
         'defines': ['V8_ENABLE_CET_SHADOW_STACK',],
       }],
+      ['v8_enable_static_roots==1', {
+        'defines': ['V8_STATIC_ROOTS',],
+      }],
       ['v8_use_zlib==1', {
         'defines': ['V8_USE_ZLIB',],
       }],
@@ -437,6 +449,9 @@
       ['v8_enable_maglev==1', {
         'defines': ['V8_ENABLE_MAGLEV',],
       }],
+      ['v8_enable_turbofan==1', {
+        'defines': ['V8_ENABLE_TURBOFAN',],
+      }],
       ['v8_enable_swiss_name_dictionary==1', {
         'defines': ['V8_ENABLE_SWISS_NAME_DICTIONARY',],
       }],
diff --git a/tools/v8_gypfiles/inspector.gypi b/tools/v8_gypfiles/inspector.gypi
index 4a423bd9e8a21f..28cdaa8319340d 100644
--- a/tools/v8_gypfiles/inspector.gypi
+++ b/tools/v8_gypfiles/inspector.gypi
@@ -45,6 +45,8 @@
     'inspector_all_sources': [
       '<(V8_ROOT)/include/v8-inspector.h',
       '<(V8_ROOT)/include/v8-inspector-protocol.h',
+      '<(V8_ROOT)/src/inspector/crc32.cc',
+      '<(V8_ROOT)/src/inspector/crc32.h',
       '<(V8_ROOT)/src/inspector/custom-preview.cc',
       '<(V8_ROOT)/src/inspector/custom-preview.h',
       '<(V8_ROOT)/src/inspector/injected-script.cc',
diff --git a/tools/v8_gypfiles/v8.gyp b/tools/v8_gypfiles/v8.gyp
index 34af094ea61e0d..e6651b89fb69d4 100644
--- a/tools/v8_gypfiles/v8.gyp
+++ b/tools/v8_gypfiles/v8.gyp
@@ -21,7 +21,6 @@
     'torque_outputs_inl_inc': ['<!@pymod_do_main(ForEachFormat "<(SHARED_INTERMEDIATE_DIR)/torque-generated/%s-inl.inc" <@(torque_files_replaced))'],
     'torque_outputs_cc': ['<!@pymod_do_main(ForEachFormat "<(SHARED_INTERMEDIATE_DIR)/torque-generated/%s.cc" <@(torque_files_replaced))'],
     'torque_outputs_inc': ['<!@pymod_do_main(ForEachFormat "<(SHARED_INTERMEDIATE_DIR)/torque-generated/%s.inc" <@(torque_files_replaced))'],
-    'v8_compiler_sources': ['<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources = ")'],
     'conditions': [
       ['v8_enable_i18n_support==1', {
         'torque_files': [
@@ -32,9 +31,6 @@
         'torque_files': [
           '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "torque_files =.*?v8_enable_webassembly.*?torque_files \\+= ")',
         ],
-        'v8_compiler_sources': [
-          '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_enable_webassembly.*?v8_compiler_sources \\+= ")',
-        ],
       }],
     ],
   },
@@ -678,7 +674,67 @@
       },
     },  # v8_internal_headers
     {
-      'target_name': 'v8_compiler_opt',
+      'target_name': 'v8_compiler_sources',
+      'type': 'none',
+      'toolsets': ['host', 'target'],
+      'direct_dependent_settings': {
+        'sources': ['<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources = ")'],
+        'conditions': [
+          ['v8_target_arch=="ia32"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"x86\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="x64"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"x64\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="arm"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"arm\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="arm64"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"arm64\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="mips64" or v8_target_arch=="mips64el"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"mips64\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="ppc"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"ppc\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="ppc64"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"ppc64\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="s390x"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"s390x\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_target_arch=="riscv64"', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_current_cpu == \\"riscv64\\".*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+          ['v8_enable_webassembly==1', {
+            'sources': [
+              '<!@pymod_do_main(GN-scraper "<(V8_ROOT)/BUILD.gn"  "v8_compiler_sources =.*?v8_enable_webassembly.*?v8_compiler_sources \\+= ")',
+            ],
+          }],
+        ],
+      }
+    },  # v8_compiler_sources
+    {
+      'target_name': 'v8_compiler_for_mksnapshot_source_set',
       'type': 'static_library',
       'toolsets': ['host', 'target'],
       'dependencies': [
@@ -690,7 +746,6 @@
         'v8_libbase',
         'v8_shared_internal_headers',
       ],
-      'sources': ['<@(v8_compiler_sources)'],
       'conditions': [
         ['OS=="win"', {
           'msvs_precompiled_header': '<(V8_ROOT)/../../tools/msvs/pch/v8_pch.h',
@@ -700,8 +755,13 @@
             '<(_msvs_precompiled_source)',
           ],
         }],
+        ['v8_enable_turbofan==1', {
+          'dependencies': ['v8_compiler_sources'],
+        }, {
+          'sources': ['<(V8_ROOT)/src/compiler/turbofan-disabled.cc'],
+        }],
       ],
-    },  # v8_compiler_opt
+    },  # v8_compiler_for_mksnapshot_source_set
     {
       'target_name': 'v8_compiler',
       'type': 'static_library',
@@ -716,8 +776,12 @@
         'v8_shared_internal_headers',
         'v8_turboshaft',
       ],
-      'sources': ['<@(v8_compiler_sources)'],
       'conditions': [
+        ['v8_enable_turbofan==1', {
+          'dependencies': ['v8_compiler_sources'],
+        }, {
+          'sources': ['<(V8_ROOT)/src/compiler/turbofan-disabled.cc'],
+        }],
         ['OS=="win"', {
           'msvs_precompiled_header': '<(V8_ROOT)/../../tools/msvs/pch/v8_pch.h',
           'msvs_precompiled_source': '<(V8_ROOT)/../../tools/msvs/pch/v8_pch.cc',
@@ -766,12 +830,12 @@
         'v8_maybe_icu',
       ],
       'conditions': [
-        ['is_component_build and not v8_optimized_debug and v8_enable_fast_mksnapshot', {
+        ['(is_component_build and not v8_optimized_debug and v8_enable_fast_mksnapshot) or v8_enable_turbofan==0', {
           'dependencies': [
-            'v8_compiler_opt',
+            'v8_compiler_for_mksnapshot_source_set',
           ],
           'export_dependent_settings': [
-            'v8_compiler_opt',
+            'v8_compiler_for_mksnapshot_source_set',
           ],
         }, {
            'dependencies': [
@@ -1036,7 +1100,13 @@
       'dependencies': [
         'v8_base_without_compiler',
         'v8_compiler',
-        'v8_turboshaft',
+      ],
+      'conditions': [
+        ['v8_enable_turbofan==1', {
+          'dependencies': [
+            'v8_turboshaft',
+          ],
+        }],
       ],
     },  # v8_base
     {
@@ -1195,7 +1265,6 @@
           'sources': [
             '<(V8_ROOT)/src/base/debug/stack_trace_posix.cc',
             '<(V8_ROOT)/src/base/platform/platform-darwin.cc',
-            '<(V8_ROOT)/src/base/platform/platform-macos.cc',
           ]
         }],
         ['OS == "ios"', {
@@ -1287,11 +1356,6 @@
                 '<(V8_ROOT)/src/base/platform/platform-linux.cc'
               ],
             }],
-            ['_toolset=="host" and host_os=="mac"', {
-              'sources': [
-                '<(V8_ROOT)/src/base/platform/platform-macos.cc'
-              ],
-            }],
             ['_toolset=="target"', {
               'sources': [
                 '<(V8_ROOT)/src/base/platform/platform-qnx.cc'
@@ -1661,47 +1725,47 @@
             'conditions': [
               ['_toolset == "host" and host_arch == "x64" or _toolset == "target" and target_arch=="x64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/x64/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/x64/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "ia32" or _toolset == "target" and target_arch=="ia32"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/ia32/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/ia32/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "arm" or _toolset == "target" and target_arch=="arm"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/arm/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/arm/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "arm64" or _toolset == "target" and target_arch=="arm64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/arm64/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/arm64/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "ppc64" or _toolset == "target" and target_arch=="ppc64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/ppc/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/ppc/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "s390x" or _toolset == "target" and target_arch=="s390x"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/s390/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/s390/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "mips64" or _toolset == "target" and target_arch=="mips64" or _toolset == "host" and host_arch == "mips64el" or _toolset == "target" and target_arch=="mips64el"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/mips64/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/mips64/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "riscv64" or _toolset == "target" and target_arch=="riscv64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/riscv/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/riscv/push_registers_asm.cc',
                 ],
               }],
               ['_toolset == "host" and host_arch == "loong64" or _toolset == "target" and target_arch=="loong64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/loong64/save_registers_asm.cc',
+                  '<(V8_ROOT)/src/heap/base/asm/loong64/push_registers_asm.cc',
                 ],
               }],
             ]
@@ -1710,17 +1774,17 @@
             'conditions': [
               ['_toolset == "host" and host_arch == "x64" or _toolset == "target" and target_arch=="x64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/x64/save_registers_masm.asm',
+                  '<(V8_ROOT)/src/heap/base/asm/x64/push_registers_masm.asm',
                 ],
               }],
               ['_toolset == "host" and host_arch == "ia32" or _toolset == "target" and target_arch=="ia32"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/ia32/save_registers_masm.asm',
+                  '<(V8_ROOT)/src/heap/base/asm/ia32/push_registers_masm.asm',
                 ],
               }],
               ['_toolset == "host" and host_arch == "arm64" or _toolset == "target" and target_arch=="arm64"', {
                 'sources': [
-                  '<(V8_ROOT)/src/heap/base/asm/arm64/save_registers_masm.S',
+                  '<(V8_ROOT)/src/heap/base/asm/arm64/push_registers_masm.S',
                 ],
               }],
             ],