diff --git a/common.gypi b/common.gypi
index 3b99d4a36e91d4..c16db57a5e7438 100644
--- a/common.gypi
+++ b/common.gypi
@@ -71,6 +71,9 @@
     # Still WIP in V8 7.1
     'v8_enable_pointer_compression': 'false',
 
+    # Explicitly set to false to copy V8's default
+    'v8_enable_31bit_smis_on_64bit_arch': 'false',
+
     # New in V8 7.1
     'v8_enable_embedded_builtins': 'true',
 
diff --git a/deps/v8/gypfiles/d8.gyp b/deps/v8/gypfiles/d8.gyp
index 34a4a6afee2b0d..aa1a631d23fcf1 100644
--- a/deps/v8/gypfiles/d8.gyp
+++ b/deps/v8/gypfiles/d8.gyp
@@ -31,6 +31,8 @@
         '../src/async-hooks-wrapper.h',
         '../src/d8-console.cc',
         '../src/d8-console.h',
+        '../src/d8-platforms.cc',
+        '../src/d8-platforms.h',
         '../src/d8.cc',
         '../src/d8.h',
       ],
diff --git a/deps/v8/gypfiles/features.gypi b/deps/v8/gypfiles/features.gypi
index 28ae99dac810b1..48e51a76e2121b 100644
--- a/deps/v8/gypfiles/features.gypi
+++ b/deps/v8/gypfiles/features.gypi
@@ -51,10 +51,21 @@
 
     'v8_enable_gdbjit%': 0,
 
+    # Build-time flag for enabling nojit mode.
+    # TODO(v8:7777): Remove the build-time flag once the --jitless runtime flag
+    # does everything we need.
+    'v8_enable_jitless_mode%': 0,
+
+    # Enable code-generation-time checking of types in the CodeStubAssembler.
     'v8_enable_verify_csa%': 0,
 
     'v8_object_print%': 0,
 
+    # Lite mode disables a number of performance optimizations to reduce memory
+    # at the cost of performance.
+    # Sets --DV8_LITE_MODE.
+    'v8_enable_lite_mode%': 0,
+
     'v8_enable_verify_heap%': 0,
 
     'v8_trace_maps%': 0,
@@ -111,17 +122,17 @@
 
     'v8_enable_pointer_compression%': 'false',
 
-    'v8_enable_embedded_builtins%': 'true',
+    'v8_enable_31bit_smis_on_64bit_arch%': 'false',
 
-    'v8_perf_prof_unwinding_info%': 0,
+    'v8_enable_embedded_builtins%': 'true',
 
     'v8_enable_fast_mksnapshot%': 0,
   },
 
   'conditions': [
     # V8's predicate inverted since we default to 'true' and set 'false' for unsupported cases.
-    #      v8_use_snapshot         &&  v8_current_cpu != "x86" &&    !is_aix &&  (  !is_win || is_clang)
-    ['not (v8_use_snapshot=="true" and v8_target_arch !="ia32" and OS!="aix" and (OS!="win" or clang==1))', {
+    #      !is_aix
+    ['not (OS!="aix")', {
       'variables': {
         'v8_enable_embedded_builtins': 'false',
       }
@@ -138,6 +149,9 @@
       ['v8_promise_internal_field_count!=0', {
         'defines': ['V8_PROMISE_INTERNAL_FIELD_COUNT=<(v8_promise_internal_field_count)'],
       }],
+      ['v8_enable_lite_mode==1', {
+        'defines': ['V8_LITE_MODE',],
+      }],
       ['v8_enable_gdbjit==1', {
         'defines': ['ENABLE_GDB_JIT_INTERFACE',],
       }],
@@ -200,12 +214,17 @@
       ['v8_enable_pointer_compression=="true"', {
         'defines': ['V8_COMPRESS_POINTERS',],
       }],
+      ['v8_enable_31bit_smis_on_64bit_arch=="true"', {
+        'defines': ['V8_31BIT_SMIS_ON_64BIT_ARCH',],
+      }],
       ['v8_enable_embedded_builtins=="true"', {
         'defines': [
           'V8_EMBEDDED_BUILTINS',
-          'V8_EMBEDDED_BYTECODE_HANDLERS',
         ],
       }],
+      ['v8_enable_jitless_mode==1', {
+        'defines': ['V8_JITLESS_MODE',],
+      }],
     ],  # conditions
     'defines': [
       'V8_GYP_BUILD',
diff --git a/deps/v8/gypfiles/inspector.gypi b/deps/v8/gypfiles/inspector.gypi
index be42ea8b783ff8..840c092efe3976 100644
--- a/deps/v8/gypfiles/inspector.gypi
+++ b/deps/v8/gypfiles/inspector.gypi
@@ -28,12 +28,11 @@
       '<(SHARED_INTERMEDIATE_DIR)/include/inspector/Schema.h',
     ],
 
-    'inspector_injected_script_source': '../src/inspector/injected-script-source.js',
-    'inspector_generated_injected_script': '<(SHARED_INTERMEDIATE_DIR)/src/inspector/injected-script-source.h',
-
     'inspector_all_sources': [
       '../include/v8-inspector.h',
       '../include/v8-inspector-protocol.h',
+      '../src/inspector/custom-preview.cc',
+      '../src/inspector/custom-preview.h',
       '../src/inspector/injected-script.cc',
       '../src/inspector/injected-script.h',
       '../src/inspector/inspected-context.cc',
@@ -60,18 +59,12 @@
       '../src/inspector/v8-debugger-agent-impl.h',
       '../src/inspector/v8-debugger-script.cc',
       '../src/inspector/v8-debugger-script.h',
-      '../src/inspector/v8-function-call.cc',
-      '../src/inspector/v8-function-call.h',
       '../src/inspector/v8-heap-profiler-agent-impl.cc',
       '../src/inspector/v8-heap-profiler-agent-impl.h',
-      '../src/inspector/v8-injected-script-host.cc',
-      '../src/inspector/v8-injected-script-host.h',
       '../src/inspector/v8-inspector-impl.cc',
       '../src/inspector/v8-inspector-impl.h',
       '../src/inspector/v8-inspector-session-impl.cc',
       '../src/inspector/v8-inspector-session-impl.h',
-      '../src/inspector/v8-internal-value-type.cc',
-      '../src/inspector/v8-internal-value-type.h',
       '../src/inspector/v8-profiler-agent-impl.cc',
       '../src/inspector/v8-profiler-agent-impl.h',
       '../src/inspector/v8-regex.cc',
@@ -84,6 +77,8 @@
       '../src/inspector/v8-stack-trace-impl.h',
       '../src/inspector/v8-value-utils.cc',
       '../src/inspector/v8-value-utils.h',
+      '../src/inspector/value-mirror.cc',
+      '../src/inspector/value-mirror.h',
       '../src/inspector/wasm-translation.cc',
       '../src/inspector/wasm-translation.h',
     ]
@@ -102,7 +97,7 @@
       ],
       'action': [
         'python',
-        '<(protocol_path)/CheckProtocolCompatibility.py',
+        '<(protocol_path)/check_protocol_compatibility.py',
         '--stamp', '<@(_outputs)',
         '<(inspector_path)/js_protocol.json',
       ],
@@ -128,23 +123,5 @@
       ],
       'message': 'Generating inspector protocol sources from protocol json',
     },
-    {
-      'action_name': 'convert_js_to_cpp_char_array',
-      'inputs': [
-        '<(inspector_path)/build/xxd.py',
-        '<(inspector_injected_script_source)',
-      ],
-      'outputs': [
-        '<(inspector_generated_injected_script)',
-      ],
-      'process_outputs_as_sources': 1,
-      'action': [
-        'python',
-        '<(inspector_path)/build/xxd.py',
-        'InjectedScriptSource_js',
-        '<(inspector_path)/injected-script-source.js',
-        '<@(_outputs)'
-      ],
-    },
   ],
 }
diff --git a/deps/v8/gypfiles/v8.gyp b/deps/v8/gypfiles/v8.gyp
index 7acd2ac9413dec..df4f4ca542552c 100644
--- a/deps/v8/gypfiles/v8.gyp
+++ b/deps/v8/gypfiles/v8.gyp
@@ -18,25 +18,36 @@
       "../src/builtins/array.tq",
       "../src/builtins/array-copywithin.tq",
       "../src/builtins/array-foreach.tq",
+      "../src/builtins/array-join.tq",
       "../src/builtins/array-lastindexof.tq",
+      "../src/builtins/array-of.tq",
       "../src/builtins/array-reverse.tq",
+      "../src/builtins/array-slice.tq",
       "../src/builtins/array-splice.tq",
       "../src/builtins/array-unshift.tq",
+      "../src/builtins/collections.tq",
       "../src/builtins/typed-array.tq",
       "../src/builtins/data-view.tq",
+      "../src/builtins/object.tq",
+      "../src/builtins/object-fromentries.tq",
+      "../src/builtins/iterator.tq",
+      "../src/builtins/typed-array.tq",
       "../third_party/v8/builtins/array-sort.tq",
     ],
-    'torque_modules': [
+    'torque_namespaces': [
       "base",
       "array",
+      "collections",
+      "iterator",
+      "object",
       "typed-array",
       "data-view",
     ],
     # Since there is no foreach in GYP we manualy unroll the following:
-    # foreach(module, torque_modules) {
+    # foreach(namespace, torque_namespaces) {
     #   outputs += [
-    #     "$target_gen_dir/torque-generated/builtins-$module-from-dsl-gen.cc",
-    #     "$target_gen_dir/torque-generated/builtins-$module-from-dsl-gen.h",
+    #     "$target_gen_dir/torque-generated/builtins-$namespace-from-dsl-gen.cc",
+    #     "$target_gen_dir/torque-generated/builtins-$namespace-from-dsl-gen.h",
     #   ]
     # }
     'torque_outputs': [
@@ -44,6 +55,12 @@
       '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-base-from-dsl-gen.h',
       '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-array-from-dsl-gen.cc',
       '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-array-from-dsl-gen.h',
+      '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-collections-from-dsl-gen.cc',
+      '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-collections-from-dsl-gen.h',
+      '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-iterator-from-dsl-gen.cc',
+      '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-iterator-from-dsl-gen.h',
+      '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-object-from-dsl-gen.cc',
+      '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-object-from-dsl-gen.h',
       '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-typed-array-from-dsl-gen.cc',
       '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-typed-array-from-dsl-gen.h',
       '<(SHARED_INTERMEDIATE_DIR)/torque-generated/builtins-data-view-from-dsl-gen.cc',
@@ -131,6 +148,10 @@
               'v8_target_cpu=<(v8_target_arch)',
               'v8_use_snapshot=<(v8_use_snapshot)',
               'v8_use_siphash=<(v8_use_siphash)',
+              'v8_enable_embedded_builtins=<(v8_enable_embedded_builtins)',
+              'v8_enable_jitless_mode=<(v8_enable_jitless_mode)',
+              'v8_enable_verify_csa=<(v8_enable_verify_csa)',
+              'v8_enable_lite_mode=<(v8_enable_lite_mode)',
             ]
           },
           'conditions': [
@@ -166,7 +187,7 @@
           # The dependency on v8_base should come from a transitive
           # dependency however the Android toolchain requires libv8_base.a
           # to appear before libv8_snapshot.a so it's listed explicitly.
-          'dependencies': ['v8_base', 'v8_snapshot'],
+          'dependencies': ['v8_base', 'v8_init', 'v8_snapshot'],
         }],
         ['v8_use_snapshot=="true" and v8_use_external_startup_data==1 and want_separate_host_toolset==0', {
           'dependencies': ['v8_base', 'v8_external_snapshot'],
@@ -266,6 +287,7 @@
         '../src/builtins/builtins-lazy-gen.h',
         '../src/builtins/builtins-math-gen.cc',
         '../src/builtins/builtins-math-gen.h',
+        '../src/builtins/builtins-microtask-queue-gen.cc',
         '../src/builtins/builtins-number-gen.cc',
         '../src/builtins/builtins-object-gen.cc',
         '../src/builtins/builtins-promise-gen.cc',
@@ -286,6 +308,8 @@
         '../src/builtins/growable-fixed-array-gen.cc',
         '../src/builtins/growable-fixed-array-gen.h',
         '../src/builtins/setup-builtins-internal.cc',
+        '../src/code-stub-assembler.cc',
+        '../src/code-stub-assembler.h',
         '../src/heap/setup-heap-internal.cc',
         '../src/ic/accessor-assembler.cc',
         '../src/ic/accessor-assembler.h',
@@ -434,11 +458,11 @@
           'conditions': [
             ['v8_enable_embedded_builtins == "true"', {
               # In this case we use `embedded_variant "Default"`
-              # and `suffix = ''` for the template `embedded${suffix}.cc`.
-              'outputs': [ '<(INTERMEDIATE_DIR)/embedded.cc' ],
+              # and `suffix = ''` for the template `embedded${suffix}.S`.
+              'outputs': [ '<(INTERMEDIATE_DIR)/embedded.S' ],
               'variables': {
                 'mksnapshot_flags':  [
-                  '--embedded_src', '<(INTERMEDIATE_DIR)/embedded.cc',
+                  '--embedded_src', '<(INTERMEDIATE_DIR)/embedded.S',
                   '--embedded_variant', 'Default',
                 ],
               },
@@ -560,6 +584,8 @@
         '../include//v8-value-serializer-version.h',
         '../include//v8-version-string.h',
         '../include//v8-version.h',
+        '../include//v8-wasm-trap-handler-posix.h',
+        '../include//v8-wasm-trap-handler-win.h',
         '../include//v8.h',
         '../include//v8config.h',
         '../src/accessors.cc',
@@ -590,8 +616,6 @@
         '../src/asmjs/asm-scanner.h',
         '../src/asmjs/asm-types.cc',
         '../src/asmjs/asm-types.h',
-        '../src/asmjs/switch-logic.cc',
-        '../src/asmjs/switch-logic.h',
         '../src/assembler-arch-inl.h',
         '../src/assembler-arch.h',
         '../src/assembler-inl.h',
@@ -607,17 +631,12 @@
         '../src/ast/ast-value-factory.h',
         '../src/ast/ast.cc',
         '../src/ast/ast.h',
-        '../src/ast/context-slot-cache.cc',
-        '../src/ast/context-slot-cache.h',
         '../src/ast/modules.cc',
         '../src/ast/modules.h',
         '../src/ast/prettyprinter.cc',
         '../src/ast/prettyprinter.h',
-        '../src/ast/scopes-inl.h',
         '../src/ast/scopes.cc',
         '../src/ast/scopes.h',
-        '../src/ast/source-range-ast-visitor.cc',
-        '../src/ast/source-range-ast-visitor.h',
         '../src/ast/variables.cc',
         '../src/ast/variables.h',
         '../src/bailout-reason.cc',
@@ -667,6 +686,7 @@
         '../src/builtins/builtins-typed-array.cc',
         '../src/builtins/builtins-utils-inl.h',
         '../src/builtins/builtins-utils.h',
+        '../src/builtins/builtins-weak-refs.cc',
         '../src/builtins/builtins.cc',
         '../src/builtins/builtins.h',
         '../src/builtins/constants-table-builder.cc',
@@ -685,8 +705,6 @@
         '../src/code-factory.h',
         '../src/code-reference.cc',
         '../src/code-reference.h',
-        '../src/code-stub-assembler.cc',
-        '../src/code-stub-assembler.h',
         '../src/code-stubs-utils.h',
         '../src/code-stubs.cc',
         '../src/code-stubs.h',
@@ -698,16 +716,10 @@
         '../src/compilation-cache.h',
         '../src/compilation-statistics.cc',
         '../src/compilation-statistics.h',
-        '../src/compiler-dispatcher/compiler-dispatcher-job.cc',
-        '../src/compiler-dispatcher/compiler-dispatcher-job.h',
-        '../src/compiler-dispatcher/compiler-dispatcher-tracer.cc',
-        '../src/compiler-dispatcher/compiler-dispatcher-tracer.h',
         '../src/compiler-dispatcher/compiler-dispatcher.cc',
         '../src/compiler-dispatcher/compiler-dispatcher.h',
         '../src/compiler-dispatcher/optimizing-compile-dispatcher.cc',
         '../src/compiler-dispatcher/optimizing-compile-dispatcher.h',
-        '../src/compiler-dispatcher/unoptimized-compile-job.cc',
-        '../src/compiler-dispatcher/unoptimized-compile-job.h',
         '../src/compiler.cc',
         '../src/compiler.h',
         '../src/compiler/access-builder.cc',
@@ -716,7 +728,34 @@
         '../src/compiler/access-info.h',
         '../src/compiler/all-nodes.cc',
         '../src/compiler/all-nodes.h',
+        '../src/compiler/allocation-builder-inl.h',
         '../src/compiler/allocation-builder.h',
+        '../src/compiler/backend/code-generator-impl.h',
+        '../src/compiler/backend/code-generator.cc',
+        '../src/compiler/backend/code-generator.h',
+        '../src/compiler/backend/frame-elider.cc',
+        '../src/compiler/backend/frame-elider.h',
+        '../src/compiler/backend/gap-resolver.cc',
+        '../src/compiler/backend/gap-resolver.h',
+        '../src/compiler/backend/instruction-codes.h',
+        '../src/compiler/backend/instruction-scheduler.cc',
+        '../src/compiler/backend/instruction-scheduler.h',
+        '../src/compiler/backend/instruction-selector-impl.h',
+        '../src/compiler/backend/instruction-selector.cc',
+        '../src/compiler/backend/instruction-selector.h',
+        '../src/compiler/backend/instruction.cc',
+        '../src/compiler/backend/instruction.h',
+        '../src/compiler/backend/jump-threading.cc',
+        '../src/compiler/backend/jump-threading.h',
+        '../src/compiler/backend/live-range-separator.cc',
+        '../src/compiler/backend/live-range-separator.h',
+        '../src/compiler/backend/move-optimizer.cc',
+        '../src/compiler/backend/move-optimizer.h',
+        '../src/compiler/backend/register-allocator-verifier.cc',
+        '../src/compiler/backend/register-allocator-verifier.h',
+        '../src/compiler/backend/register-allocator.cc',
+        '../src/compiler/backend/register-allocator.h',
+        '../src/compiler/backend/unwinding-info-writer.h',
         '../src/compiler/basic-block-instrumentor.cc',
         '../src/compiler/basic-block-instrumentor.h',
         '../src/compiler/branch-elimination.cc',
@@ -732,9 +771,6 @@
         '../src/compiler/checkpoint-elimination.h',
         '../src/compiler/code-assembler.cc',
         '../src/compiler/code-assembler.h',
-        '../src/compiler/code-generator-impl.h',
-        '../src/compiler/code-generator.cc',
-        '../src/compiler/code-generator.h',
         '../src/compiler/common-node-cache.cc',
         '../src/compiler/common-node-cache.h',
         '../src/compiler/common-operator-reducer.cc',
@@ -760,15 +796,11 @@
         '../src/compiler/escape-analysis-reducer.h',
         '../src/compiler/escape-analysis.cc',
         '../src/compiler/escape-analysis.h',
-        '../src/compiler/frame-elider.cc',
-        '../src/compiler/frame-elider.h',
         '../src/compiler/frame-states.cc',
         '../src/compiler/frame-states.h',
         '../src/compiler/frame.cc',
         '../src/compiler/frame.h',
         '../src/compiler/functional-list.h',
-        '../src/compiler/gap-resolver.cc',
-        '../src/compiler/gap-resolver.h',
         '../src/compiler/graph-assembler.cc',
         '../src/compiler/graph-assembler.h',
         '../src/compiler/graph-reducer.cc',
@@ -779,14 +811,6 @@
         '../src/compiler/graph-visualizer.h',
         '../src/compiler/graph.cc',
         '../src/compiler/graph.h',
-        '../src/compiler/instruction-codes.h',
-        '../src/compiler/instruction-scheduler.cc',
-        '../src/compiler/instruction-scheduler.h',
-        '../src/compiler/instruction-selector-impl.h',
-        '../src/compiler/instruction-selector.cc',
-        '../src/compiler/instruction-selector.h',
-        '../src/compiler/instruction.cc',
-        '../src/compiler/instruction.h',
         '../src/compiler/int64-lowering.cc',
         '../src/compiler/int64-lowering.h',
         '../src/compiler/js-call-reducer.cc',
@@ -817,12 +841,8 @@
         '../src/compiler/js-type-hint-lowering.h',
         '../src/compiler/js-typed-lowering.cc',
         '../src/compiler/js-typed-lowering.h',
-        '../src/compiler/jump-threading.cc',
-        '../src/compiler/jump-threading.h',
         '../src/compiler/linkage.cc',
         '../src/compiler/linkage.h',
-        '../src/compiler/live-range-separator.cc',
-        '../src/compiler/live-range-separator.h',
         '../src/compiler/load-elimination.cc',
         '../src/compiler/load-elimination.h',
         '../src/compiler/loop-analysis.cc',
@@ -841,8 +861,6 @@
         '../src/compiler/machine-operator.h',
         '../src/compiler/memory-optimizer.cc',
         '../src/compiler/memory-optimizer.h',
-        '../src/compiler/move-optimizer.cc',
-        '../src/compiler/move-optimizer.h',
         '../src/compiler/node-aux-data.h',
         '../src/compiler/node-cache.cc',
         '../src/compiler/node-cache.h',
@@ -880,10 +898,6 @@
         '../src/compiler/redundancy-elimination.h',
         '../src/compiler/refs-map.cc',
         '../src/compiler/refs-map.h',
-        '../src/compiler/register-allocator-verifier.cc',
-        '../src/compiler/register-allocator-verifier.h',
-        '../src/compiler/register-allocator.cc',
-        '../src/compiler/register-allocator.h',
         '../src/compiler/representation-change.cc',
         '../src/compiler/representation-change.h',
         '../src/compiler/schedule.cc',
@@ -914,7 +928,6 @@
         '../src/compiler/typer.h',
         '../src/compiler/types.cc',
         '../src/compiler/types.h',
-        '../src/compiler/unwinding-info-writer.h',
         '../src/compiler/value-numbering-reducer.cc',
         '../src/compiler/value-numbering-reducer.h',
         '../src/compiler/verifier.cc',
@@ -923,6 +936,9 @@
         '../src/compiler/wasm-compiler.h',
         '../src/compiler/zone-stats.cc',
         '../src/compiler/zone-stats.h',
+        '../src/constant-pool.cc',
+        '../src/constant-pool.h',
+        '../src/constants-arch.h',
         '../src/contexts-inl.h',
         '../src/contexts.cc',
         '../src/contexts.h',
@@ -944,6 +960,8 @@
         '../src/debug/debug-frames.cc',
         '../src/debug/debug-frames.h',
         '../src/debug/debug-interface.h',
+        '../src/debug/debug-property-iterator.cc',
+        '../src/debug/debug-property-iterator.h',
         '../src/debug/debug-scope-iterator.cc',
         '../src/debug/debug-scope-iterator.h',
         '../src/debug/debug-scopes.cc',
@@ -961,6 +979,7 @@
         '../src/deoptimize-reason.h',
         '../src/deoptimizer.cc',
         '../src/deoptimizer.h',
+        '../src/detachable-vector.cc',
         '../src/detachable-vector.h',
         '../src/disasm.h',
         '../src/disassembler.cc',
@@ -1082,6 +1101,7 @@
         '../src/heap/scavenger-inl.h',
         '../src/heap/scavenger.cc',
         '../src/heap/scavenger.h',
+        '../src/heap/slot-set.cc',
         '../src/heap/slot-set.h',
         '../src/heap/spaces-inl.h',
         '../src/heap/spaces.cc',
@@ -1112,8 +1132,6 @@
         '../src/icu_util.h',
         '../src/identity-map.cc',
         '../src/identity-map.h',
-        '../src/instruction-stream.cc',
-        '../src/instruction-stream.h',
         '../src/interface-descriptors.cc',
         '../src/interface-descriptors.h',
         '../src/interpreter/block-coverage-builder.h',
@@ -1161,8 +1179,9 @@
         '../src/interpreter/interpreter-intrinsics.h',
         '../src/interpreter/interpreter.cc',
         '../src/interpreter/interpreter.h',
-        '../src/intl.cc',
-        '../src/intl.h',
+        '../src/isolate-allocator.cc',
+        '../src/isolate-allocator.h',
+        '../src/isolate-data.h',
         '../src/isolate-inl.h',
         '../src/isolate.cc',
         '../src/isolate.h',
@@ -1200,8 +1219,11 @@
         '../src/math-random.h',
         '../src/maybe-handles-inl.h',
         '../src/maybe-handles.h',
+        '../src/message-template.h',
         '../src/messages.cc',
         '../src/messages.h',
+        '../src/microtask-queue.cc',
+        '../src/microtask-queue.h',
         '../src/msan.h',
         '../src/objects-body-descriptors-inl.h',
         '../src/objects-body-descriptors.h',
@@ -1226,13 +1248,21 @@
         '../src/objects/debug-objects.h',
         '../src/objects/descriptor-array.h',
         '../src/objects/dictionary.h',
+        '../src/objects/embedder-data-array-inl.h',
+        '../src/objects/embedder-data-array.cc',
+        '../src/objects/embedder-data-array.h',
+        '../src/objects/embedder-data-slot-inl.h',
+        '../src/objects/embedder-data-slot.h',
         '../src/objects/fixed-array-inl.h',
         '../src/objects/fixed-array.h',
         '../src/objects/frame-array-inl.h',
         '../src/objects/frame-array.h',
         '../src/objects/hash-table-inl.h',
         '../src/objects/hash-table.h',
-        '../src/objects/intl-objects-inl.h',
+        '../src/objects/heap-object-inl.h',
+        '../src/objects/heap-object.h',
+        '../src/objects/instance-type-inl.h',
+        '../src/objects/instance-type.h',
         '../src/objects/intl-objects.cc',
         '../src/objects/intl-objects.h',
         '../src/objects/js-array-buffer-inl.h',
@@ -1278,9 +1308,14 @@
         '../src/objects/js-relative-time-format-inl.h',
         '../src/objects/js-relative-time-format.cc',
         '../src/objects/js-relative-time-format.h',
+        '../src/objects/js-segment-iterator-inl.h',
+        '../src/objects/js-segment-iterator.cc',
+        '../src/objects/js-segment-iterator.h',
         '../src/objects/js-segmenter-inl.h',
         '../src/objects/js-segmenter.cc',
         '../src/objects/js-segmenter.h',
+        '../src/objects/js-weak-refs-inl.h',
+        '../src/objects/js-weak-refs.h',
         '../src/objects/literal-objects-inl.h',
         '../src/objects/literal-objects.cc',
         '../src/objects/literal-objects.h',
@@ -1291,9 +1326,6 @@
         '../src/objects/maybe-object-inl.h',
         '../src/objects/maybe-object.h',
         '../src/objects/microtask-inl.h',
-        '../src/objects/microtask-queue-inl.h',
-        '../src/objects/microtask-queue.cc',
-        '../src/objects/microtask-queue.h',
         '../src/objects/microtask.h',
         '../src/objects/module-inl.h',
         '../src/objects/module.cc',
@@ -1320,6 +1352,9 @@
         '../src/objects/script.h',
         '../src/objects/shared-function-info-inl.h',
         '../src/objects/shared-function-info.h',
+        '../src/objects/slots-atomic-inl.h',
+        '../src/objects/slots-inl.h',
+        '../src/objects/slots.h',
         '../src/objects/stack-frame-info-inl.h',
         '../src/objects/stack-frame-info.h',
         '../src/objects/string-inl.h',
@@ -1333,7 +1368,6 @@
         '../src/optimized-compilation-info.h',
         '../src/ostreams.cc',
         '../src/ostreams.h',
-        '../src/parsing/duplicate-finder.h',
         '../src/parsing/expression-classifier.h',
         '../src/parsing/expression-scope-reparenter.cc',
         '../src/parsing/expression-scope-reparenter.h',
@@ -1365,6 +1399,7 @@
         '../src/pending-compilation-error-handler.h',
         '../src/perf-jit.cc',
         '../src/perf-jit.h',
+        '../src/pointer-with-payload.h',
         '../src/profiler/allocation-tracker.cc',
         '../src/profiler/allocation-tracker.h',
         '../src/profiler/circular-queue-inl.h',
@@ -1398,6 +1433,7 @@
         '../src/property.cc',
         '../src/property.h',
         '../src/prototype.h',
+        '../src/ptr-compr.h',
         '../src/regexp/bytecodes-irregexp.h',
         '../src/regexp/interpreter-irregexp.cc',
         '../src/regexp/interpreter-irregexp.h',
@@ -1461,6 +1497,7 @@
         '../src/runtime/runtime-typedarray.cc',
         '../src/runtime/runtime-utils.h',
         '../src/runtime/runtime-wasm.cc',
+        '../src/runtime/runtime-weak-refs.cc',
         '../src/runtime/runtime.cc',
         '../src/runtime/runtime.h',
         '../src/safepoint-table.cc',
@@ -1470,23 +1507,14 @@
         '../src/simulator-base.cc',
         '../src/simulator-base.h',
         '../src/simulator.h',
-        '../src/snapshot/builtin-deserializer-allocator.cc',
-        '../src/snapshot/builtin-deserializer-allocator.h',
-        '../src/snapshot/builtin-deserializer.cc',
-        '../src/snapshot/builtin-deserializer.h',
-        '../src/snapshot/builtin-serializer-allocator.cc',
-        '../src/snapshot/builtin-serializer-allocator.h',
-        '../src/snapshot/builtin-serializer.cc',
-        '../src/snapshot/builtin-serializer.h',
         '../src/snapshot/code-serializer.cc',
         '../src/snapshot/code-serializer.h',
-        '../src/snapshot/default-deserializer-allocator.cc',
-        '../src/snapshot/default-deserializer-allocator.h',
-        '../src/snapshot/default-serializer-allocator.cc',
-        '../src/snapshot/default-serializer-allocator.h',
+        '../src/snapshot/deserializer-allocator.cc',
+        '../src/snapshot/deserializer-allocator.h',
         '../src/snapshot/deserializer.cc',
         '../src/snapshot/deserializer.h',
-        '../src/snapshot/macros.h',
+        '../src/snapshot/embedded-data.cc',
+        '../src/snapshot/embedded-data.h',
         '../src/snapshot/natives-common.cc',
         '../src/snapshot/natives.h',
         '../src/snapshot/object-deserializer.cc',
@@ -1495,7 +1523,15 @@
         '../src/snapshot/partial-deserializer.h',
         '../src/snapshot/partial-serializer.cc',
         '../src/snapshot/partial-serializer.h',
+        '../src/snapshot/read-only-deserializer.cc',
+        '../src/snapshot/read-only-deserializer.h',
+        '../src/snapshot/read-only-serializer.cc',
+        '../src/snapshot/read-only-serializer.h',
         '../src/snapshot/references.h',
+        '../src/snapshot/roots-serializer.cc',
+        '../src/snapshot/roots-serializer.h',
+        '../src/snapshot/serializer-allocator.cc',
+        '../src/snapshot/serializer-allocator.h',
         '../src/snapshot/serializer-common.cc',
         '../src/snapshot/serializer-common.h',
         '../src/snapshot/serializer.cc',
@@ -1529,10 +1565,13 @@
         '../src/string-stream.h',
         '../src/strtod.cc',
         '../src/strtod.h',
+        '../src/task-utils.cc',
+        '../src/task-utils.h',
         '../src/third_party/siphash/halfsiphash.cc',
         '../src/third_party/siphash/halfsiphash.h',
         '../src/third_party/utf8-decoder/utf8-decoder.h',
-        '../src/torque-assembler.h',
+        '../src/thread-id.cc',
+        '../src/thread-id.h',
         '../src/tracing/trace-event.cc',
         '../src/tracing/trace-event.h',
         '../src/tracing/traced-value.cc',
@@ -1551,7 +1590,6 @@
         '../src/turbo-assembler.h',
         '../src/type-hints.cc',
         '../src/type-hints.h',
-        '../src/unicode-cache-inl.h',
         '../src/unicode-cache.h',
         '../src/unicode-decoder.cc',
         '../src/unicode-decoder.h',
@@ -1560,6 +1598,7 @@
         '../src/unicode.h',
         '../src/unoptimized-compilation-info.cc',
         '../src/unoptimized-compilation-info.h',
+        '../src/unwinder.cc',
         '../src/uri.cc',
         '../src/uri.h',
         '../src/utils-inl.h',
@@ -1587,12 +1626,15 @@
         '../src/wasm/baseline/liftoff-compiler.cc',
         '../src/wasm/baseline/liftoff-compiler.h',
         '../src/wasm/baseline/liftoff-register.h',
+        '../src/wasm/compilation-environment.h',
         '../src/wasm/decoder.h',
         '../src/wasm/function-body-decoder-impl.h',
         '../src/wasm/function-body-decoder.cc',
         '../src/wasm/function-body-decoder.h',
         '../src/wasm/function-compiler.cc',
         '../src/wasm/function-compiler.h',
+        '../src/wasm/graph-builder-interface.cc',
+        '../src/wasm/graph-builder-interface.h',
         '../src/wasm/jump-table-assembler.cc',
         '../src/wasm/jump-table-assembler.h',
         '../src/wasm/leb-helper.h',
@@ -1621,6 +1663,7 @@
         '../src/wasm/wasm-feature-flags.h',
         '../src/wasm/wasm-features.cc',
         '../src/wasm/wasm-features.h',
+        '../src/wasm/wasm-import-wrapper-cache-inl.h',
         '../src/wasm/wasm-interpreter.cc',
         '../src/wasm/wasm-interpreter.h',
         '../src/wasm/wasm-js.cc',
@@ -1668,10 +1711,10 @@
         }],
         ['v8_target_arch=="ia32"', {
           'sources': [
-            '../src/compiler/ia32/code-generator-ia32.cc',
-            '../src/compiler/ia32/instruction-codes-ia32.h',
-            '../src/compiler/ia32/instruction-scheduler-ia32.cc',
-            '../src/compiler/ia32/instruction-selector-ia32.cc',
+            '../src/compiler/backend/ia32/code-generator-ia32.cc',
+            '../src/compiler/backend/ia32/instruction-codes-ia32.h',
+            '../src/compiler/backend/ia32/instruction-scheduler-ia32.cc',
+            '../src/compiler/backend/ia32/instruction-selector-ia32.cc',
             '../src/debug/ia32/debug-ia32.cc',
             '../src/ia32/assembler-ia32-inl.h',
             '../src/ia32/assembler-ia32.cc',
@@ -1697,12 +1740,12 @@
         }],
         ['v8_target_arch=="x64"', {
           'sources': [
-            '../src/compiler/x64/code-generator-x64.cc',
-            '../src/compiler/x64/instruction-codes-x64.h',
-            '../src/compiler/x64/instruction-scheduler-x64.cc',
-            '../src/compiler/x64/instruction-selector-x64.cc',
-            '../src/compiler/x64/unwinding-info-writer-x64.cc',
-            '../src/compiler/x64/unwinding-info-writer-x64.h',
+            '../src/compiler/backend/x64/code-generator-x64.cc',
+            '../src/compiler/backend/x64/instruction-codes-x64.h',
+            '../src/compiler/backend/x64/instruction-scheduler-x64.cc',
+            '../src/compiler/backend/x64/instruction-selector-x64.cc',
+            '../src/compiler/backend/x64/unwinding-info-writer-x64.cc',
+            '../src/compiler/backend/x64/unwinding-info-writer-x64.h',
             '../src/debug/x64/debug-x64.cc',
             '../src/regexp/x64/regexp-macro-assembler-x64.cc',
             '../src/regexp/x64/regexp-macro-assembler-x64.h',
@@ -1728,14 +1771,17 @@
             '../src/x64/sse-instr.h',
           ],
         }],
-        ['v8_target_arch=="x64" and OS=="linux"', {
+        ['v8_target_arch=="x64" and (OS=="linux" or OS=="mac")', {
             'sources': [
-              '../src/trap-handler/handler-inside-linux.cc',
-              '../src/trap-handler/handler-outside-linux.cc',
+              '../src/trap-handler/handler-inside-posix.cc',
+              '../src/trap-handler/handler-inside-posix.h',
+              '../src/trap-handler/handler-outside-posix.cc',
             ],
         }],
         ['v8_target_arch=="x64" and OS=="win"', {
             'sources': [
+              '../src/trap-handler/handler-inside-win.cc',
+              '../src/trap-handler/handler-inside-win.h',
               '../src/trap-handler/handler-outside-win.cc',
             ],
         }],
@@ -1760,12 +1806,12 @@
             '../src/arm/macro-assembler-arm.h',
             '../src/arm/simulator-arm.cc',
             '../src/arm/simulator-arm.h',
-            '../src/compiler/arm/code-generator-arm.cc',
-            '../src/compiler/arm/instruction-codes-arm.h',
-            '../src/compiler/arm/instruction-scheduler-arm.cc',
-            '../src/compiler/arm/instruction-selector-arm.cc',
-            '../src/compiler/arm/unwinding-info-writer-arm.cc',
-            '../src/compiler/arm/unwinding-info-writer-arm.h',
+            '../src/compiler/backend/arm/code-generator-arm.cc',
+            '../src/compiler/backend/arm/instruction-codes-arm.h',
+            '../src/compiler/backend/arm/instruction-scheduler-arm.cc',
+            '../src/compiler/backend/arm/instruction-selector-arm.cc',
+            '../src/compiler/backend/arm/unwinding-info-writer-arm.cc',
+            '../src/compiler/backend/arm/unwinding-info-writer-arm.h',
             '../src/debug/arm/debug-arm.cc',
             '../src/regexp/arm/regexp-macro-assembler-arm.cc',
             '../src/regexp/arm/regexp-macro-assembler-arm.h',
@@ -1805,12 +1851,12 @@
             '../src/arm64/simulator-logic-arm64.cc',
             '../src/arm64/utils-arm64.cc',
             '../src/arm64/utils-arm64.h',
-            '../src/compiler/arm64/code-generator-arm64.cc',
-            '../src/compiler/arm64/instruction-codes-arm64.h',
-            '../src/compiler/arm64/instruction-scheduler-arm64.cc',
-            '../src/compiler/arm64/instruction-selector-arm64.cc',
-            '../src/compiler/arm64/unwinding-info-writer-arm64.cc',
-            '../src/compiler/arm64/unwinding-info-writer-arm64.h',
+            '../src/compiler/backend/arm64/code-generator-arm64.cc',
+            '../src/compiler/backend/arm64/instruction-codes-arm64.h',
+            '../src/compiler/backend/arm64/instruction-scheduler-arm64.cc',
+            '../src/compiler/backend/arm64/instruction-selector-arm64.cc',
+            '../src/compiler/backend/arm64/unwinding-info-writer-arm64.cc',
+            '../src/compiler/backend/arm64/unwinding-info-writer-arm64.h',
             '../src/debug/arm64/debug-arm64.cc',
             '../src/regexp/arm64/regexp-macro-assembler-arm64.cc',
             '../src/regexp/arm64/regexp-macro-assembler-arm64.h',
@@ -1819,10 +1865,10 @@
         }],
         ['v8_target_arch=="mips" or v8_target_arch=="mipsel"', {
           'sources': [
-            '../src/compiler/mips/code-generator-mips.cc',
-            '../src/compiler/mips/instruction-codes-mips.h',
-            '../src/compiler/mips/instruction-scheduler-mips.cc',
-            '../src/compiler/mips/instruction-selector-mips.cc',
+            '../src/compiler/backend/mips/code-generator-mips.cc',
+            '../src/compiler/backend/mips/instruction-codes-mips.h',
+            '../src/compiler/backend/mips/instruction-scheduler-mips.cc',
+            '../src/compiler/backend/mips/instruction-selector-mips.cc',
             '../src/debug/mips/debug-mips.cc',
             '../src/mips/assembler-mips-inl.h',
             '../src/mips/assembler-mips.cc',
@@ -1849,10 +1895,10 @@
         }],
         ['v8_target_arch=="mips64" or v8_target_arch=="mips64el"', {
           'sources': [
-            '../src/compiler/mips64/code-generator-mips64.cc',
-            '../src/compiler/mips64/instruction-codes-mips64.h',
-            '../src/compiler/mips64/instruction-scheduler-mips64.cc',
-            '../src/compiler/mips64/instruction-selector-mips64.cc',
+            '../src/compiler/backend/mips64/code-generator-mips64.cc',
+            '../src/compiler/backend/mips64/instruction-codes-mips64.h',
+            '../src/compiler/backend/mips64/instruction-scheduler-mips64.cc',
+            '../src/compiler/backend/mips64/instruction-selector-mips64.cc',
             '../src/debug/mips64/debug-mips64.cc',
             '../src/mips64/assembler-mips64-inl.h',
             '../src/mips64/assembler-mips64.cc',
@@ -1879,10 +1925,10 @@
         }],
         ['v8_target_arch=="ppc" or v8_target_arch=="ppc64"', {
           'sources': [
-            '../src/compiler/ppc/code-generator-ppc.cc',
-            '../src/compiler/ppc/instruction-codes-ppc.h',
-            '../src/compiler/ppc/instruction-scheduler-ppc.cc',
-            '../src/compiler/ppc/instruction-selector-ppc.cc',
+            '../src/compiler/backend/ppc/code-generator-ppc.cc',
+            '../src/compiler/backend/ppc/instruction-codes-ppc.h',
+            '../src/compiler/backend/ppc/instruction-scheduler-ppc.cc',
+            '../src/compiler/backend/ppc/instruction-selector-ppc.cc',
             '../src/debug/ppc/debug-ppc.cc',
             '../src/ppc/assembler-ppc-inl.h',
             '../src/ppc/assembler-ppc.cc',
@@ -1909,10 +1955,10 @@
         }],
         ['v8_target_arch=="s390" or v8_target_arch=="s390x"', {
           'sources': [
-            '../src/compiler/s390/code-generator-s390.cc',
-            '../src/compiler/s390/instruction-codes-s390.h',
-            '../src/compiler/s390/instruction-scheduler-s390.cc',
-            '../src/compiler/s390/instruction-selector-s390.cc',
+            '../src/compiler/backend/s390/code-generator-s390.cc',
+            '../src/compiler/backend/s390/instruction-codes-s390.h',
+            '../src/compiler/backend/s390/instruction-scheduler-s390.cc',
+            '../src/compiler/backend/s390/instruction-selector-s390.cc',
             '../src/debug/s390/debug-s390.cc',
             '../src/regexp/s390/regexp-macro-assembler-s390.cc',
             '../src/regexp/s390/regexp-macro-assembler-s390.h',
@@ -1986,9 +2032,6 @@
           'sources!': [
             '../src/builtins/builtins-intl.cc',
             '../src/char-predicates.cc',
-            '../src/intl.cc',
-            '../src/intl.h',
-            '../src/objects/intl-objects-inl.h',
             '../src/objects/intl-objects.cc',
             '../src/objects/intl-objects.h',
             '../src/objects/js-break-iterator-inl.h',
@@ -2015,6 +2058,9 @@
             '../src/objects/js-relative-time-format-inl.h',
             '../src/objects/js-relative-time-format.cc',
             '../src/objects/js-relative-time-format.h',
+            '../src/objects/js-segment-iterator-inl.h',
+            '../src/objects/js-segment-iterator.cc',
+            '../src/objects/js-segment-iterator.h',
             '../src/objects/js-segmenter-inl.h',
             '../src/objects/js-segmenter.cc',
             '../src/objects/js-segmenter.h',
@@ -2564,7 +2610,7 @@
       'variables': {
         'library_files': [
           '../src/js/macros.py',
-          '../src/messages.h',
+          '../src/message-template.h',
           '../src/js/prologue.js',
           '../src/js/array.js',
           '../src/js/typedarray.js',
@@ -2572,11 +2618,6 @@
         'libraries_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries.bin',
         'libraries_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-extras.bin',
         'libraries_experimental_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
-        'conditions': [
-          ['v8_enable_i18n_support==1', {
-            'library_files': ['../src/js/intl.js'],
-          }],
-        ],
       },
       'actions': [
         {
@@ -2665,8 +2706,6 @@
         '../src/torque/implementation-visitor.h',
         '../src/torque/instructions.cc',
         '../src/torque/instructions.h',
-        '../src/torque/scope.cc',
-        '../src/torque/scope.h',
         '../src/torque/source-positions.cc',
         '../src/torque/source-positions.h',
         '../src/torque/torque-parser.cc',
@@ -2715,12 +2754,17 @@
             '../src/objects/data-handler-inl.h',
             '../src/objects/fixed-array-inl.h',
             '../src/objects/fixed-array.h',
+            '../src/objects/heap-object-inl.h',
+            '../src/objects/heap-object.h',
+            '../src/objects/instance-type.h',
             '../src/objects/js-array-inl.h',
             '../src/objects/js-array.h',
             '../src/objects/js-array-buffer-inl.h',
             '../src/objects/js-array-buffer.h',
             '../src/objects/js-objects-inl.h',
             '../src/objects/js-objects.h',
+            '../src/objects/js-promise-inl.h',
+            '../src/objects/js-promise.h',
             '../src/objects/js-regexp-inl.h',
             '../src/objects/js-regexp.h',
             '../src/objects/js-regexp-string-iterator-inl.h',
@@ -2772,6 +2816,8 @@
         '<(DEPTH)',
       ],
       'sources': [
+        '../src/snapshot/embedded-file-writer.cc',
+        '../src/snapshot/embedded-file-writer.h',
         '../src/snapshot/mksnapshot.cc',
       ],
       'conditions': [