From cc65ae0445a097148c710f68f6001db951db8b44 Mon Sep 17 00:00:00 2001
From: Alexander Frick <Alex313031@gmail.com>
Date: Sat, 10 Jun 2023 16:22:08 -0500
Subject: [PATCH]  update other build.gns

---
 arm/build/config/compiler/BUILD.gn        |  63 +++---
 arm/build/config/win/BUILD.gn             |   5 +-
 arm/raspi/build/config/compiler/BUILD.gn  |  63 +++---
 other/AVX2/build/config/compiler/BUILD.gn |  90 ++++----
 other/AVX2/build/config/win/BUILD.gn      |   5 +-
 other/AVX2/v8/BUILD.gn                    | 252 ++++++++++++++--------
 other/SSE2/build/config/compiler/BUILD.gn |  28 +--
 other/SSE2/build/config/win/BUILD.gn      |   5 +-
 other/SSE3/build/config/compiler/BUILD.gn |  91 ++++----
 other/SSE3/build/config/win/BUILD.gn      |   5 +-
 other/SSE3/v8/BUILD.gn                    | 252 ++++++++++++++--------
 11 files changed, 465 insertions(+), 394 deletions(-)

diff --git a/arm/build/config/compiler/BUILD.gn b/arm/build/config/compiler/BUILD.gn
index b4ac78ee..5e998db7 100644
--- a/arm/build/config/compiler/BUILD.gn
+++ b/arm/build/config/compiler/BUILD.gn
@@ -581,11 +581,6 @@ config("compiler") {
     }
   }
 
-  # Rust compiler setup (for either clang or rustc).
-  if (enable_rust) {
-    defines += [ "RUST_ENABLED" ]
-  }
-
   # C11/C++11 compiler flags setup.
   # ---------------------------
   if (is_linux || is_chromeos || is_android || (is_nacl && is_clang) ||
@@ -714,14 +709,10 @@ config("compiler") {
       # of "all" which means number of hardware threads) is faster.
       ldflags += [ "-Wl,--thinlto-jobs=all" ]
       if (is_apple) {
-        _object_path_suffix = ""
-        if (is_ios) {
-          _object_path_suffix = ",persist"
-        }
         ldflags += [
           "-Wl,-cache_path_lto," +
               rebase_path("$root_out_dir/thinlto-cache", root_build_dir),
-          "-Wcrl,object_path_lto" + _object_path_suffix,
+          "-Wcrl,object_path_lto",
         ]
       } else {
         ldflags +=
@@ -734,9 +725,8 @@ config("compiler") {
         # ARM was originally set lower than x86 to keep the size
         # bloat of ThinLTO to <10%, but that's potentially no longer true.
         # FIXME(inglorion): maybe tune these?
-        if (target_cpu == "arm" || target_cpu == "arm64") {
-          import_instr_limit = 30
-        }
+        # TODO(b/271459198): Revert limit on amd64 to 30 when fixed.
+        import_instr_limit = 30
       } else if (is_android) {
         # TODO(crbug.com/1308318): Investigate if we can get the > 6% perf win
         # of import_instr_limit 30 with a binary size hit smaller than ~2 MiB.
@@ -899,9 +889,10 @@ config("compiler") {
     # to compile dylibs on Android, such as for constructing unit test APKs.
     "-Cdefault-linker-libraries",
 
-    # Turn warnings into the "deny" lint level, which produce compiler errors.
-    # The equivalent of -Werror for clang/gcc.
-    "-Dwarnings",
+    # Require `unsafe` blocks even in `unsafe` fns. This is intended to become
+    # an error by default eventually; see
+    # https://github.com/rust-lang/rust/issues/71668
+    "-Dunsafe_op_in_unsafe_fn",
 
     # To make Rust .d files compatible with ninja
     "-Zdep-info-omit-d-target",
@@ -920,12 +911,8 @@ config("compiler") {
   if (rust_abi_target != "") {
     rustflags += [ "--target=$rust_abi_target" ]
   }
-  if (!use_thin_lto || !use_chromium_rust_toolchain) {
-    # Don't include bitcode if it won't be used, or can't be used. When
-    # use_thin_lto is true, we will try to apply LTO to any objects that have
-    # the appropriate bitcode. But we have to use Chromium's toolchain in order
-    # to use LTO with rust code. Chromium's rustc will have an LLVM backend that
-    # matches the C++ clang compiler.
+  if (!use_thin_lto) {
+    # Don't include bitcode if it won't be used.
     rustflags += [ "-Cembed-bitcode=no" ]
   }
   if (is_official_build) {
@@ -1341,7 +1328,7 @@ config("compiler_codegen") {
     configs += [ "//build/config/nacl:compiler_codegen" ]
   }
 
-  if (current_cpu == "arm64" && !is_win) {
+  if (current_cpu == "arm64" && !is_win && is_clang) {
     # Disable outlining everywhere on arm64 except Win. For more information see
     # crbug.com/931297 for Android and crbug.com/1410297 for iOS.
     # TODO(crbug.com/1411363): Enable this on Windows if possible.
@@ -1770,6 +1757,15 @@ config("chromium_code") {
       cflags += [ "-Wextra" ]
     }
 
+    if (treat_warnings_as_errors) {
+      # Turn rustc warnings into the "deny" lint level, which produce compiler
+      # errors. The equivalent of -Werror for clang/gcc.
+      #
+      # Note we apply the actual lint flags in config("compiler"). All warnings
+      # are suppressed in third-party crates.
+      rustflags = [ "-Dwarnings" ]
+    }
+
     # In Chromium code, we define __STDC_foo_MACROS in order to get the
     # C99 macros on Mac and Linux.
     defines = [
@@ -1809,8 +1805,8 @@ config("chromium_code") {
     ]
 
     # TODO(thakis): Enable this more often, https://crbug.com/346399
-    # use_libfuzzer: https://crbug.com/1063180
-    if ((!is_nacl || is_nacl_saigo) && !use_libfuzzer) {
+    # use_fuzzing_engine_with_lpm: https://crbug.com/1063180
+    if ((!is_nacl || is_nacl_saigo) && !use_fuzzing_engine_with_lpm) {
       cflags += [ "-Wunreachable-code-aggressive" ]
     }
 
@@ -2395,10 +2391,12 @@ if (is_clang && is_a_target_toolchain) {
     if (is_android || is_castos) {
       _clang_sample_profile = "//chrome/android/profiles/afdo.prof"
     } else {
-      assert(chromeos_afdo_platform == "atom" ||
-                 chromeos_afdo_platform == "bigcore" ||
-                 chromeos_afdo_platform == "arm",
-             "Only atom, bigcore and arm are valid Chrome OS profiles.")
+      assert(
+          chromeos_afdo_platform == "atom" ||
+              chromeos_afdo_platform == "bigcore" ||
+              chromeos_afdo_platform == "arm" ||
+              chromeos_afdo_platform == "arm-exp",
+          "Only 'atom', 'bigcore', 'arm' and 'arm-exp' are valid ChromeOS profiles.")
       _clang_sample_profile =
           "//chromeos/profiles/${chromeos_afdo_platform}.afdo.prof"
     }
@@ -2752,9 +2750,12 @@ if (is_chromeos_ash && is_chromeos_device) {
 if (is_android || (is_chromeos_ash && is_chromeos_device)) {
   # Use orderfile for linking Chrome on Android and Chrome OS.
   # This config enables using an orderfile for linking in LLD.
-  # TODO: Consider using call graph sort instead, at least on Android.
   config("chrome_orderfile_config") {
-    if (chrome_orderfile_path != "" && !enable_call_graph_profile_sort) {
+    # Don't try to use an orderfile with call graph sorting, except on Android,
+    # where we care about memory used by code, so we still want to mandate
+    # ordering.
+    if (chrome_orderfile_path != "" &&
+        (is_android || !enable_call_graph_profile_sort)) {
       assert(use_lld)
       _rebased_orderfile = rebase_path(chrome_orderfile_path, root_build_dir)
       ldflags = [
diff --git a/arm/build/config/win/BUILD.gn b/arm/build/config/win/BUILD.gn
index bdc6e56e..2897ee03 100644
--- a/arm/build/config/win/BUILD.gn
+++ b/arm/build/config/win/BUILD.gn
@@ -300,10 +300,7 @@ config("runtime_library") {
   }
 }
 
-# Chromium supports running on Windows 7, but if these constants are set to
-# Windows 7, then newer APIs aren't made available by the Windows SDK.
-# So we set this to Windows 10 and then are careful to check at runtime
-# to only call newer APIs when they're available.
+# Chromium only supports Windowes 10+.
 # Some third-party libraries assume that these defines set what version of
 # Windows is available at runtime. Targets using these libraries need to
 # manually override this config for their compiles.
diff --git a/arm/raspi/build/config/compiler/BUILD.gn b/arm/raspi/build/config/compiler/BUILD.gn
index e777fbf9..e320774a 100644
--- a/arm/raspi/build/config/compiler/BUILD.gn
+++ b/arm/raspi/build/config/compiler/BUILD.gn
@@ -581,11 +581,6 @@ config("compiler") {
     }
   }
 
-  # Rust compiler setup (for either clang or rustc).
-  if (enable_rust) {
-    defines += [ "RUST_ENABLED" ]
-  }
-
   # C11/C++11 compiler flags setup.
   # ---------------------------
   if (is_linux || is_chromeos || is_android || (is_nacl && is_clang) ||
@@ -714,14 +709,10 @@ config("compiler") {
       # of "all" which means number of hardware threads) is faster.
       ldflags += [ "-Wl,--thinlto-jobs=all" ]
       if (is_apple) {
-        _object_path_suffix = ""
-        if (is_ios) {
-          _object_path_suffix = ",persist"
-        }
         ldflags += [
           "-Wl,-cache_path_lto," +
               rebase_path("$root_out_dir/thinlto-cache", root_build_dir),
-          "-Wcrl,object_path_lto" + _object_path_suffix,
+          "-Wcrl,object_path_lto",
         ]
       } else {
         ldflags +=
@@ -734,9 +725,8 @@ config("compiler") {
         # ARM was originally set lower than x86 to keep the size
         # bloat of ThinLTO to <10%, but that's potentially no longer true.
         # FIXME(inglorion): maybe tune these?
-        if (target_cpu == "arm" || target_cpu == "arm64") {
-          import_instr_limit = 30
-        }
+        # TODO(b/271459198): Revert limit on amd64 to 30 when fixed.
+        import_instr_limit = 30
       } else if (is_android) {
         # TODO(crbug.com/1308318): Investigate if we can get the > 6% perf win
         # of import_instr_limit 30 with a binary size hit smaller than ~2 MiB.
@@ -890,9 +880,10 @@ config("compiler") {
     # to compile dylibs on Android, such as for constructing unit test APKs.
     "-Cdefault-linker-libraries",
 
-    # Turn warnings into the "deny" lint level, which produce compiler errors.
-    # The equivalent of -Werror for clang/gcc.
-    "-Dwarnings",
+    # Require `unsafe` blocks even in `unsafe` fns. This is intended to become
+    # an error by default eventually; see
+    # https://github.com/rust-lang/rust/issues/71668
+    "-Dunsafe_op_in_unsafe_fn",
 
     # To make Rust .d files compatible with ninja
     "-Zdep-info-omit-d-target",
@@ -911,12 +902,8 @@ config("compiler") {
   if (rust_abi_target != "") {
     rustflags += [ "--target=$rust_abi_target" ]
   }
-  if (!use_thin_lto || !use_chromium_rust_toolchain) {
-    # Don't include bitcode if it won't be used, or can't be used. When
-    # use_thin_lto is true, we will try to apply LTO to any objects that have
-    # the appropriate bitcode. But we have to use Chromium's toolchain in order
-    # to use LTO with rust code. Chromium's rustc will have an LLVM backend that
-    # matches the C++ clang compiler.
+  if (!use_thin_lto) {
+    # Don't include bitcode if it won't be used.
     rustflags += [ "-Cembed-bitcode=no" ]
   }
   if (is_official_build) {
@@ -1314,7 +1301,7 @@ config("compiler_codegen") {
     configs += [ "//build/config/nacl:compiler_codegen" ]
   }
 
-  if (current_cpu == "arm64" && !is_win) {
+  if (current_cpu == "arm64" && !is_win && is_clang) {
     # Disable outlining everywhere on arm64 except Win. For more information see
     # crbug.com/931297 for Android and crbug.com/1410297 for iOS.
     # TODO(crbug.com/1411363): Enable this on Windows if possible.
@@ -1743,6 +1730,15 @@ config("chromium_code") {
       cflags += [ "-Wextra" ]
     }
 
+    if (treat_warnings_as_errors) {
+      # Turn rustc warnings into the "deny" lint level, which produce compiler
+      # errors. The equivalent of -Werror for clang/gcc.
+      #
+      # Note we apply the actual lint flags in config("compiler"). All warnings
+      # are suppressed in third-party crates.
+      rustflags = [ "-Dwarnings" ]
+    }
+
     # In Chromium code, we define __STDC_foo_MACROS in order to get the
     # C99 macros on Mac and Linux.
     defines = [
@@ -1782,8 +1778,8 @@ config("chromium_code") {
     ]
 
     # TODO(thakis): Enable this more often, https://crbug.com/346399
-    # use_libfuzzer: https://crbug.com/1063180
-    if ((!is_nacl || is_nacl_saigo) && !use_libfuzzer) {
+    # use_fuzzing_engine_with_lpm: https://crbug.com/1063180
+    if ((!is_nacl || is_nacl_saigo) && !use_fuzzing_engine_with_lpm) {
       cflags += [ "-Wunreachable-code-aggressive" ]
     }
 
@@ -2333,10 +2329,12 @@ if (is_clang && is_a_target_toolchain) {
     if (is_android || is_castos) {
       _clang_sample_profile = "//chrome/android/profiles/afdo.prof"
     } else {
-      assert(chromeos_afdo_platform == "atom" ||
-                 chromeos_afdo_platform == "bigcore" ||
-                 chromeos_afdo_platform == "arm",
-             "Only atom, bigcore and arm are valid Chrome OS profiles.")
+      assert(
+          chromeos_afdo_platform == "atom" ||
+              chromeos_afdo_platform == "bigcore" ||
+              chromeos_afdo_platform == "arm" ||
+              chromeos_afdo_platform == "arm-exp",
+          "Only 'atom', 'bigcore', 'arm' and 'arm-exp' are valid ChromeOS profiles.")
       _clang_sample_profile =
           "//chromeos/profiles/${chromeos_afdo_platform}.afdo.prof"
     }
@@ -2690,9 +2688,12 @@ if (is_chromeos_ash && is_chromeos_device) {
 if (is_android || (is_chromeos_ash && is_chromeos_device)) {
   # Use orderfile for linking Chrome on Android and Chrome OS.
   # This config enables using an orderfile for linking in LLD.
-  # TODO: Consider using call graph sort instead, at least on Android.
   config("chrome_orderfile_config") {
-    if (chrome_orderfile_path != "" && !enable_call_graph_profile_sort) {
+    # Don't try to use an orderfile with call graph sorting, except on Android,
+    # where we care about memory used by code, so we still want to mandate
+    # ordering.
+    if (chrome_orderfile_path != "" &&
+        (is_android || !enable_call_graph_profile_sort)) {
       assert(use_lld)
       _rebased_orderfile = rebase_path(chrome_orderfile_path, root_build_dir)
       ldflags = [
diff --git a/other/AVX2/build/config/compiler/BUILD.gn b/other/AVX2/build/config/compiler/BUILD.gn
index f9467291..cc92f009 100644
--- a/other/AVX2/build/config/compiler/BUILD.gn
+++ b/other/AVX2/build/config/compiler/BUILD.gn
@@ -581,11 +581,6 @@ config("compiler") {
     }
   }
 
-  # Rust compiler setup (for either clang or rustc).
-  if (enable_rust) {
-    defines += [ "RUST_ENABLED" ]
-  }
-
   # C11/C++11 compiler flags setup.
   # ---------------------------
   if (is_linux || is_chromeos || is_android || (is_nacl && is_clang) ||
@@ -714,14 +709,10 @@ config("compiler") {
       # of "all" which means number of hardware threads) is faster.
       ldflags += [ "-Wl,--thinlto-jobs=all" ]
       if (is_apple) {
-        _object_path_suffix = ""
-        if (is_ios) {
-          _object_path_suffix = ",persist"
-        }
         ldflags += [
           "-Wl,-cache_path_lto," +
               rebase_path("$root_out_dir/thinlto-cache", root_build_dir),
-          "-Wcrl,object_path_lto" + _object_path_suffix,
+          "-Wcrl,object_path_lto",
         ]
       } else {
         ldflags +=
@@ -734,9 +725,8 @@ config("compiler") {
         # ARM was originally set lower than x86 to keep the size
         # bloat of ThinLTO to <10%, but that's potentially no longer true.
         # FIXME(inglorion): maybe tune these?
-        if (target_cpu == "arm" || target_cpu == "arm64") {
-          import_instr_limit = 30
-        }
+        # TODO(b/271459198): Revert limit on amd64 to 30 when fixed.
+        import_instr_limit = 30
       } else if (is_android) {
         # TODO(crbug.com/1308318): Investigate if we can get the > 6% perf win
         # of import_instr_limit 30 with a binary size hit smaller than ~2 MiB.
@@ -890,9 +880,10 @@ config("compiler") {
     # to compile dylibs on Android, such as for constructing unit test APKs.
     "-Cdefault-linker-libraries",
 
-    # Turn warnings into the "deny" lint level, which produce compiler errors.
-    # The equivalent of -Werror for clang/gcc.
-    "-Dwarnings",
+    # Require `unsafe` blocks even in `unsafe` fns. This is intended to become
+    # an error by default eventually; see
+    # https://github.com/rust-lang/rust/issues/71668
+    "-Dunsafe_op_in_unsafe_fn",
 
     # To make Rust .d files compatible with ninja
     "-Zdep-info-omit-d-target",
@@ -911,12 +902,8 @@ config("compiler") {
   if (rust_abi_target != "") {
     rustflags += [ "--target=$rust_abi_target" ]
   }
-  if (!use_thin_lto || !use_chromium_rust_toolchain) {
-    # Don't include bitcode if it won't be used, or can't be used. When
-    # use_thin_lto is true, we will try to apply LTO to any objects that have
-    # the appropriate bitcode. But we have to use Chromium's toolchain in order
-    # to use LTO with rust code. Chromium's rustc will have an LLVM backend that
-    # matches the C++ clang compiler.
+  if (!use_thin_lto) {
+    # Don't include bitcode if it won't be used.
     rustflags += [ "-Cembed-bitcode=no" ]
   }
   if (is_official_build) {
@@ -1333,7 +1320,7 @@ config("compiler_codegen") {
     configs += [ "//build/config/nacl:compiler_codegen" ]
   }
 
-  if (current_cpu == "arm64" && !is_win) {
+  if (current_cpu == "arm64" && !is_win && is_clang) {
     # Disable outlining everywhere on arm64 except Win. For more information see
     # crbug.com/931297 for Android and crbug.com/1410297 for iOS.
     # TODO(crbug.com/1411363): Enable this on Windows if possible.
@@ -1762,6 +1749,15 @@ config("chromium_code") {
       cflags += [ "-Wextra" ]
     }
 
+    if (treat_warnings_as_errors) {
+      # Turn rustc warnings into the "deny" lint level, which produce compiler
+      # errors. The equivalent of -Werror for clang/gcc.
+      #
+      # Note we apply the actual lint flags in config("compiler"). All warnings
+      # are suppressed in third-party crates.
+      rustflags = [ "-Dwarnings" ]
+    }
+
     # In Chromium code, we define __STDC_foo_MACROS in order to get the
     # C99 macros on Mac and Linux.
     defines = [
@@ -1801,8 +1797,8 @@ config("chromium_code") {
     ]
 
     # TODO(thakis): Enable this more often, https://crbug.com/346399
-    # use_libfuzzer: https://crbug.com/1063180
-    if ((!is_nacl || is_nacl_saigo) && !use_libfuzzer) {
+    # use_fuzzing_engine_with_lpm: https://crbug.com/1063180
+    if ((!is_nacl || is_nacl_saigo) && !use_fuzzing_engine_with_lpm) {
       cflags += [ "-Wunreachable-code-aggressive" ]
     }
 
@@ -2065,7 +2061,6 @@ if (is_win) {
 
   common_optimize_on_cflags += [
     "-Xclang", "-freroll-loops",
-    "-mllvm", "-extra-vectorizer-passes",
     "-mllvm", "-enable-cond-stores-vec",
     "-mllvm", "-slp-vectorize-hor-store",
     "-mllvm", "-adce-remove-loops",
@@ -2073,28 +2068,23 @@ if (is_win) {
     "-mllvm", "-enable-cse-in-legalizer",
     "-mllvm", "-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm", "-loop-rotate-multi",
-    "-mllvm", "-enable-loopinterchange",
     "-mllvm", "-enable-loop-distribute",
     "-mllvm", "-enable-unroll-and-jam",
-    "-mllvm", "-enable-loop-flatten",
     "-mllvm", "-interleave-small-loop-scalar-reduction",
-    "-mllvm", "-unroll-runtime",
-    "-mllvm", "-unroll-runtime-multi-exit",
     "-mllvm", "-aggressive-ext-opt",
     "-mllvm", "-enable-interleaved-mem-accesses",
     "-mllvm", "-enable-masked-interleaved-mem-accesses",
     "-mllvm", "-enable-gvn-hoist",
+    "-mllvm", "-enable-dfa-jump-thread",
     "/O2",
     "/clang:-O3",
+    "/clang:-mavx",
     "/clang:-maes",
     "/clang:-mpclmul",
-    "/clang:-mavx",
-    "/clang:-mavx2",
     "-Xclang", "-O3",
   ]
 
   common_optimize_on_ldflags += [
-    "-mllvm:-extra-vectorizer-passes",
     "-mllvm:-enable-cond-stores-vec",
     "-mllvm:-slp-vectorize-hor-store",
     "-mllvm:-adce-remove-loops",
@@ -2102,17 +2092,14 @@ if (is_win) {
     "-mllvm:-enable-cse-in-legalizer",
     "-mllvm:-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm:-loop-rotate-multi",
-    "-mllvm:-enable-loopinterchange",
     "-mllvm:-enable-loop-distribute",
     "-mllvm:-enable-unroll-and-jam",
-    "-mllvm:-enable-loop-flatten",
     "-mllvm:-interleave-small-loop-scalar-reduction",
-    "-mllvm:-unroll-runtime",
-    "-mllvm:-unroll-runtime-multi-exit",
     "-mllvm:-aggressive-ext-opt",
     "-mllvm:-enable-interleaved-mem-accesses",
     "-mllvm:-enable-masked-interleaved-mem-accesses",
     "-mllvm:-enable-gvn-hoist",
+    "-mllvm:-enable-dfa-jump-thread",
   ]
 
   if (use_polly == true) {
@@ -2142,7 +2129,6 @@ if (is_win) {
 
   common_optimize_on_cflags += [
     "-freroll-loops",
-    "-mllvm", "-extra-vectorizer-passes",
     "-mllvm", "-enable-cond-stores-vec",
     "-mllvm", "-slp-vectorize-hor-store",
     "-mllvm", "-adce-remove-loops",
@@ -2150,23 +2136,19 @@ if (is_win) {
     "-mllvm", "-enable-cse-in-legalizer",
     "-mllvm", "-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm", "-loop-rotate-multi",
-    "-mllvm", "-enable-loopinterchange",
     "-mllvm", "-enable-loop-distribute",
     "-mllvm", "-enable-unroll-and-jam",
-    "-mllvm", "-enable-loop-flatten",
     "-mllvm", "-interleave-small-loop-scalar-reduction",
-    "-mllvm", "-unroll-runtime",
-    "-mllvm", "-unroll-runtime-multi-exit",
     "-mllvm", "-aggressive-ext-opt",
     "-mllvm", "-enable-interleaved-mem-accesses",
     "-mllvm", "-enable-masked-interleaved-mem-accesses",
     "-mllvm", "-enable-gvn-hoist",
+    "-mllvm", "-enable-dfa-jump-thread",
     "-O3",
   ]
 
   common_optimize_on_ldflags += [
     "-freroll-loops",
-    "-Wl,-mllvm,-extra-vectorizer-passes",
     "-Wl,-mllvm,-enable-cond-stores-vec",
     "-Wl,-mllvm,-slp-vectorize-hor-store",
     "-Wl,-mllvm,-adce-remove-loops",
@@ -2174,17 +2156,14 @@ if (is_win) {
     "-Wl,-mllvm,-enable-cse-in-legalizer",
     "-Wl,-mllvm,-scalar-evolution-use-expensive-range-sharpening",
     "-Wl,-mllvm,-loop-rotate-multi",
-    "-Wl,-mllvm,-enable-loopinterchange",
     "-Wl,-mllvm,-enable-loop-distribute",
     "-Wl,-mllvm,-enable-unroll-and-jam",
-    "-Wl,-mllvm,-enable-loop-flatten",
     "-Wl,-mllvm,-interleave-small-loop-scalar-reduction",
-    "-Wl,-mllvm,-unroll-runtime",
-    "-Wl,-mllvm,-unroll-runtime-multi-exit",
     "-Wl,-mllvm,-aggressive-ext-opt",
     "-Wl,-mllvm,-enable-interleaved-mem-accesses",
     "-Wl,-mllvm,-enable-masked-interleaved-mem-accesses",
     "-Wl,-mllvm,-enable-gvn-hoist",
+    "-Wl,-mllvm,-enable-dfa-jump-thread",
     "-Wl,-O3",
   ]
 
@@ -2472,10 +2451,12 @@ if (is_clang && is_a_target_toolchain) {
     if (is_android || is_castos) {
       _clang_sample_profile = "//chrome/android/profiles/afdo.prof"
     } else {
-      assert(chromeos_afdo_platform == "atom" ||
-                 chromeos_afdo_platform == "bigcore" ||
-                 chromeos_afdo_platform == "arm",
-             "Only atom, bigcore and arm are valid Chrome OS profiles.")
+      assert(
+          chromeos_afdo_platform == "atom" ||
+              chromeos_afdo_platform == "bigcore" ||
+              chromeos_afdo_platform == "arm" ||
+              chromeos_afdo_platform == "arm-exp",
+          "Only 'atom', 'bigcore', 'arm' and 'arm-exp' are valid ChromeOS profiles.")
       _clang_sample_profile =
           "//chromeos/profiles/${chromeos_afdo_platform}.afdo.prof"
     }
@@ -2829,9 +2810,12 @@ if (is_chromeos_ash && is_chromeos_device) {
 if (is_android || (is_chromeos_ash && is_chromeos_device)) {
   # Use orderfile for linking Chrome on Android and Chrome OS.
   # This config enables using an orderfile for linking in LLD.
-  # TODO: Consider using call graph sort instead, at least on Android.
   config("chrome_orderfile_config") {
-    if (chrome_orderfile_path != "" && !enable_call_graph_profile_sort) {
+    # Don't try to use an orderfile with call graph sorting, except on Android,
+    # where we care about memory used by code, so we still want to mandate
+    # ordering.
+    if (chrome_orderfile_path != "" &&
+        (is_android || !enable_call_graph_profile_sort)) {
       assert(use_lld)
       _rebased_orderfile = rebase_path(chrome_orderfile_path, root_build_dir)
       ldflags = [
diff --git a/other/AVX2/build/config/win/BUILD.gn b/other/AVX2/build/config/win/BUILD.gn
index 6afe36c4..415b5820 100644
--- a/other/AVX2/build/config/win/BUILD.gn
+++ b/other/AVX2/build/config/win/BUILD.gn
@@ -307,10 +307,7 @@ config("runtime_library") {
   }
 }
 
-# Chromium supports running on Windows 7, but if these constants are set to
-# Windows 7, then newer APIs aren't made available by the Windows SDK.
-# So we set this to Windows 10 and then are careful to check at runtime
-# to only call newer APIs when they're available.
+# Chromium only supports Windowes 10+.
 # Some third-party libraries assume that these defines set what version of
 # Windows is available at runtime. Targets using these libraries need to
 # manually override this config for their compiles.
diff --git a/other/AVX2/v8/BUILD.gn b/other/AVX2/v8/BUILD.gn
index fdbbc76f..46327a66 100644
--- a/other/AVX2/v8/BUILD.gn
+++ b/other/AVX2/v8/BUILD.gn
@@ -4,9 +4,11 @@
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
+import("//build/config/coverage/coverage.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/host_byteorder.gni")
 import("//build/config/mips.gni")
+import("//build/config/riscv.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build_overrides/build.gni")
 
@@ -123,6 +125,10 @@ declare_args() {
   # Use pre-generated static root pointer values from static-roots.h.
   v8_enable_static_roots = ""
 
+  # Mode used by gen-static-roots.py to have a heap layout which is identical
+  # to when v8_enable_static_roots is enabled.
+  v8_enable_static_root_generation = false
+
   # Enable code-generation-time checking of types in the CodeStubAssembler.
   v8_enable_verify_csa = false
 
@@ -271,6 +277,9 @@ declare_args() {
   # Use switch-based dispatch if this is false
   v8_enable_regexp_interpreter_threaded_dispatch = true
 
+  # Check mksnapshot determinism by running it multiple times.
+  v8_verify_deterministic_mksnapshot = false
+
   # Enable additional targets necessary for verification of torque
   # file generation
   v8_verify_torque_generation_invariance = false
@@ -375,6 +384,14 @@ declare_args() {
 
   # Make ValueDeserializer crash if the data to deserialize is invalid.
   v8_value_deserializer_hard_fail = false
+
+  # Enable jitless mode, including compile-time optimizations. Note that even
+  # when this is set to 'false', one can run V8 in jitless mode at runtime by
+  # passing the `--jitless` flag; but then you miss out on compile-time
+  # optimizations.
+  # iOS (non-simulator) does not have executable pages for 3rd party
+  # applications yet so disable jit.
+  v8_jitless = v8_enable_lite_mode || target_is_ios_device
 }
 
 # Derived defaults.
@@ -465,31 +482,10 @@ if (v8_enable_maglev == "") {
 assert(v8_enable_turbofan || !v8_enable_maglev,
        "Maglev is not available when Turbofan is disabled.")
 
-if (v8_builtins_profiling_log_file == "default") {
-  v8_builtins_profiling_log_file = ""
+assert(!v8_jitless ||
+           (!v8_enable_maglev && !v8_enable_turbofan && !v8_enable_webassembly),
+       "Maglev, Turbofan and Wasm are not available in jitless mode")
 
-  # Don't use existing profile when
-  # * generating a new one (i.e. v8_enable_builtins_profiling),
-  # * is_debug or dcheck_always_on because they add more checks to the
-  #   builtins control flow which we don't want to generate,
-  # * v8_enable_webassembly because it changes the set of opcodes which affects
-  #   graphs hashes,
-  # * !is_clang because it might affect argument evaluation order, which
-  #    makes node IDs not predictable for subgraphs like Op1(Op2(), Op3()) and
-  #    as a result different graph hash.
-  if (!v8_enable_builtins_profiling && is_clang && !is_debug &&
-      !dcheck_always_on && v8_enable_webassembly) {
-    if ((v8_current_cpu == "x64" || v8_current_cpu == "arm64") &&
-        v8_enable_pointer_compression && v8_enable_external_code_space) {
-      # Note, currently x64 profile can be applied to arm64 but not the other
-      # way round.
-      v8_builtins_profiling_log_file = "tools/builtins-pgo/x64.profile"
-    } else if (v8_current_cpu == "x86" || v8_current_cpu == "arm") {
-      # Note, x86 profile can be applied to arm but not the other way round.
-      v8_builtins_profiling_log_file = "tools/builtins-pgo/x86.profile"
-    }
-  }
-}
 if (v8_enable_single_generation == "") {
   v8_enable_single_generation = v8_disable_write_barriers
 }
@@ -565,6 +561,40 @@ assert(!v8_enable_static_roots ||
                 v8_enable_i18n_support),
        "Trying to enable static roots in a configuration that is not supported")
 
+assert(
+    !(v8_enable_static_roots && v8_enable_static_root_generation),
+    "Static root values must be generated in a build that does not rely on static roots itself")
+
+if (v8_builtins_profiling_log_file == "default") {
+  v8_builtins_profiling_log_file = ""
+
+  # Don't use existing profile when
+  # * v8_enable_builtins_optimization is disabled,
+  # * generating a new one (i.e. v8_enable_builtins_profiling),
+  # * is_debug or dcheck_always_on because they add more checks to the
+  #   builtins control flow which we don't want to generate,
+  # * !v8_enable_sandbox because it affects the way how external pointer values
+  #   are accessed,
+  # * v8_enable_webassembly because it changes the set of opcodes which affects
+  #   graphs hashes,
+  # * !is_clang because it might affect argument evaluation order, which
+  #    makes node IDs not predictable for subgraphs like Op1(Op2(), Op3()) and
+  #    as a result different graph hash.
+  if (v8_enable_builtins_optimization && !v8_enable_builtins_profiling &&
+      is_clang && !is_debug && !dcheck_always_on && v8_enable_webassembly) {
+    if ((v8_current_cpu == "x64" || v8_current_cpu == "arm64") &&
+        v8_enable_pointer_compression && v8_enable_external_code_space &&
+        v8_enable_sandbox) {
+      # Note, currently x64 profile can be applied to arm64 but not the other
+      # way round.
+      v8_builtins_profiling_log_file = "tools/builtins-pgo/profiles/x64.profile"
+    } else if (v8_current_cpu == "x86" || v8_current_cpu == "arm") {
+      # Note, x86 profile can be applied to arm but not the other way round.
+      v8_builtins_profiling_log_file = "tools/builtins-pgo/profiles/x86.profile"
+    }
+  }
+}
+
 if (v8_enable_webassembly && !target_is_simulator && v8_current_cpu == "x64") {
   v8_enable_wasm_simd256_revec = true
 }
@@ -626,12 +656,6 @@ assert(!cppgc_enable_young_generation || cppgc_enable_caged_heap,
 assert(!cppgc_enable_pointer_compression || cppgc_enable_caged_heap,
        "Pointer compression in CppGC requires caged heap")
 
-assert(
-    !v8_enable_conservative_stack_scanning ||
-        v8_enable_inner_pointer_resolution_osb ||
-        v8_enable_inner_pointer_resolution_mb,
-    "Conservative stack scanning requires inner pointer resolution (OSB or MB)")
-
 if (v8_enable_single_generation == true) {
   assert(
       v8_enable_unconditional_write_barriers || v8_disable_write_barriers,
@@ -995,12 +1019,6 @@ config("features") {
   if (v8_enable_single_generation) {
     defines += [ "V8_ENABLE_SINGLE_GENERATION" ]
   }
-  if (v8_enable_inner_pointer_resolution_osb) {
-    defines += [ "V8_ENABLE_INNER_POINTER_RESOLUTION_OSB" ]
-  }
-  if (v8_enable_inner_pointer_resolution_mb) {
-    defines += [ "V8_ENABLE_INNER_POINTER_RESOLUTION_MB" ]
-  }
   if (v8_disable_write_barriers) {
     defines += [ "V8_DISABLE_WRITE_BARRIERS" ]
   }
@@ -1061,6 +1079,9 @@ config("features") {
   if (v8_enable_turbofan) {
     defines += [ "V8_ENABLE_TURBOFAN" ]
   }
+  if (v8_jitless) {
+    defines += [ "V8_JITLESS" ]
+  }
   if (v8_enable_swiss_name_dictionary) {
     defines += [ "V8_ENABLE_SWISS_NAME_DICTIONARY" ]
   }
@@ -1106,6 +1127,9 @@ config("features") {
   if (v8_enable_static_roots) {
     defines += [ "V8_STATIC_ROOTS" ]
   }
+  if (v8_enable_static_root_generation) {
+    defines += [ "V8_STATIC_ROOT_GENERATION" ]
+  }
   if (v8_use_zlib) {
     defines += [ "V8_USE_ZLIB" ]
   }
@@ -1252,8 +1276,9 @@ config("toolchain") {
     if (!is_clang) {
       cflags += [ "-ffp-contract=off" ]
     }
-    if (target_is_simulator) {
+    if (riscv_use_rvv || target_is_simulator) {
       defines += [ "CAN_USE_RVV_INSTRUCTIONS" ]
+      defines += [ "RVV_VLEN=${riscv_rvv_vlen}" ]
     }
   }
 
@@ -1580,23 +1605,6 @@ config("always_turbofanimize") {
   }
 }
 
-# Configs for code coverage with gcov. Separate configs for cflags and ldflags
-# to selectively influde cflags in non-test targets only.
-config("v8_gcov_coverage_cflags") {
-  cflags = [
-    "-fprofile-arcs",
-    "-ftest-coverage",
-
-    # We already block on gcc warnings on other bots. Let's not block here to
-    # always generate coverage reports.
-    "-Wno-error",
-  ]
-}
-
-config("v8_gcov_coverage_ldflags") {
-  ldflags = [ "-fprofile-arcs" ]
-}
-
 ###############################################################################
 # Actions
 #
@@ -1630,12 +1638,8 @@ template("asm_to_inline_asm") {
 
 if (v8_postmortem_support) {
   action("postmortem-metadata") {
-    # Only targets in this file and the top-level visibility target can
-    # depend on this.
-    visibility = [
-      ":*",
-      "//:gn_visibility",
-    ]
+    # Only targets in this file can depend on this.
+    visibility = [ ":*" ]
 
     script = "tools/gen-postmortem-metadata.py"
 
@@ -1772,6 +1776,7 @@ torque_files = [
   "src/builtins/internal-coverage.tq",
   "src/builtins/internal.tq",
   "src/builtins/iterator.tq",
+  "src/builtins/iterator-from.tq",
   "src/builtins/iterator-helpers.tq",
   "src/builtins/math.tq",
   "src/builtins/number.tq",
@@ -2069,7 +2074,7 @@ if (v8_verify_torque_generation_invariance) {
 
 group("v8_maybe_icu") {
   if (v8_enable_i18n_support) {
-    public_deps = [ "//third_party/icu" ]
+    public_deps = [ v8_icu_path ]
   }
 }
 
@@ -2317,10 +2322,44 @@ if (emit_builtins_as_inline_asm) {
   }
 }
 
+if (v8_verify_deterministic_mksnapshot) {
+  runs = [
+    "run_0",
+    "run_1",
+    "run_2",
+    "run_3",
+    "run_4",
+    "run_5",
+    "run_6",
+  ]
+
+  foreach(i, runs) {
+    run_mksnapshot(i) {
+      args = []
+      embedded_variant = "Default"
+    }
+  }
+
+  action("verify_deterministic_mksnapshot") {
+    deps = []
+    foreach(i, runs) {
+      deps += [ ":run_mksnapshot_$i" ]
+    }
+    report_file = "$target_gen_dir/mksnapshot_comparison.txt"
+    script = "tools/snapshot/compare_mksnapshot_output.py"
+    args = [
+      rebase_path("$report_file", root_build_dir),
+      rebase_path("$target_gen_dir", root_build_dir),
+      rebase_path("$root_out_dir", root_build_dir),
+      "7",  # Length of the 'runs' list.
+    ]
+    outputs = [ report_file ]
+  }
+}
+
 action("v8_dump_build_config") {
   script = "tools/testrunner/utils/dump_build_config.py"
   outputs = [ "$root_out_dir/v8_build_config.json" ]
-  is_gcov_coverage = v8_code_coverage && !is_clang
   is_DEBUG_defined = v8_enable_debugging_features || dcheck_always_on
   is_full_debug = v8_enable_debugging_features && !v8_optimized_debug
   args = [
@@ -2331,11 +2370,11 @@ action("v8_dump_build_config") {
     "is_asan=$is_asan",
     "is_cfi=$is_cfi",
     "is_clang=$is_clang",
+    "is_clang_coverage=$use_clang_coverage",
     "is_component_build=$is_component_build",
     "is_debug=$v8_enable_debugging_features",
     "is_DEBUG_defined=$is_DEBUG_defined",
     "is_full_debug=$is_full_debug",
-    "is_gcov_coverage=$is_gcov_coverage",
     "is_msan=$is_msan",
     "is_tsan=$is_tsan",
     "is_ubsan_vptr=$is_ubsan_vptr",
@@ -2371,6 +2410,7 @@ action("v8_dump_build_config") {
     "v8_enable_verify_heap=$v8_enable_verify_heap",
     "v8_enable_verify_predictable=$v8_enable_verify_predictable",
     "v8_enable_webassembly=$v8_enable_webassembly",
+    "v8_jitless=$v8_jitless",
     "v8_target_cpu=\"$v8_target_cpu\"",
   ]
 
@@ -2387,7 +2427,10 @@ action("v8_dump_build_config") {
 #
 
 v8_source_set("v8_snapshot") {
-  visibility = [ ":*" ]  # Targets in this file can depend on this.
+  # Let external targets depend on v8_snapshot.
+  if (v8_use_external_startup_data) {
+    visibility = [ ":*" ]  # Targets in this file can depend on this.
+  }
 
   deps = [
     ":v8_internal_headers",
@@ -2421,9 +2464,6 @@ v8_source_set("v8_snapshot") {
 
     sources += [ "src/snapshot/snapshot-external.cc" ]
   } else {
-    # Also top-level visibility targets can depend on this.
-    visibility += [ "//:gn_visibility" ]
-
     public_deps += [ ":v8_maybe_icu" ]
 
     sources += [ "$target_gen_dir/snapshot.cc" ]
@@ -2988,6 +3028,7 @@ v8_header_set("v8_internal_headers") {
     "src/compiler/osr.h",
     "src/compiler/per-isolate-compiler-cache.h",
     "src/compiler/persistent-map.h",
+    "src/compiler/phase.h",
     "src/compiler/pipeline-statistics.h",
     "src/compiler/pipeline.h",
     "src/compiler/processed-feedback.h",
@@ -3005,11 +3046,16 @@ v8_header_set("v8_internal_headers") {
     "src/compiler/simplified-operator.h",
     "src/compiler/state-values-utils.h",
     "src/compiler/store-store-elimination.h",
+    "src/compiler/string-builder-optimizer.h",
     "src/compiler/turbofan.h",
     "src/compiler/turboshaft/assembler.h",
     "src/compiler/turboshaft/assert-types-reducer.h",
     "src/compiler/turboshaft/branch-elimination-reducer.h",
+    "src/compiler/turboshaft/build-graph-phase.h",
+    "src/compiler/turboshaft/builtin-call-descriptors.h",
+    "src/compiler/turboshaft/dead-code-elimination-phase.h",
     "src/compiler/turboshaft/dead-code-elimination-reducer.h",
+    "src/compiler/turboshaft/decompression-optimization-phase.h",
     "src/compiler/turboshaft/decompression-optimization.h",
     "src/compiler/turboshaft/define-assembler-macros.inc",
     "src/compiler/turboshaft/deopt-data.h",
@@ -3019,24 +3065,34 @@ v8_header_set("v8_internal_headers") {
     "src/compiler/turboshaft/graph.h",
     "src/compiler/turboshaft/index.h",
     "src/compiler/turboshaft/late-escape-analysis-reducer.h",
+    "src/compiler/turboshaft/late-optimization-phase.h",
     "src/compiler/turboshaft/layered-hash-map.h",
+    "src/compiler/turboshaft/machine-lowering-phase.h",
     "src/compiler/turboshaft/machine-lowering-reducer.h",
     "src/compiler/turboshaft/machine-optimization-reducer.h",
-    "src/compiler/turboshaft/memory-optimization.h",
+    "src/compiler/turboshaft/memory-optimization-reducer.h",
     "src/compiler/turboshaft/operation-matching.h",
     "src/compiler/turboshaft/operations.h",
     "src/compiler/turboshaft/optimization-phase.h",
+    "src/compiler/turboshaft/optimize-phase.h",
+    "src/compiler/turboshaft/phase.h",
+    "src/compiler/turboshaft/recreate-schedule-phase.h",
     "src/compiler/turboshaft/recreate-schedule.h",
     "src/compiler/turboshaft/reducer-traits.h",
     "src/compiler/turboshaft/representations.h",
+    "src/compiler/turboshaft/runtime-call-descriptors.h",
     "src/compiler/turboshaft/select-lowering-reducer.h",
     "src/compiler/turboshaft/sidetable.h",
     "src/compiler/turboshaft/simplify-tf-loops.h",
     "src/compiler/turboshaft/snapshot-table.h",
+    "src/compiler/turboshaft/tag-untag-lowering-phase.h",
     "src/compiler/turboshaft/tag-untag-lowering-reducer.h",
+    "src/compiler/turboshaft/tracing.h",
+    "src/compiler/turboshaft/type-assertions-phase.h",
     "src/compiler/turboshaft/type-inference-analysis.h",
     "src/compiler/turboshaft/type-inference-reducer.h",
     "src/compiler/turboshaft/type-parser.h",
+    "src/compiler/turboshaft/typed-optimizations-phase.h",
     "src/compiler/turboshaft/typed-optimizations-reducer.h",
     "src/compiler/turboshaft/typer.h",
     "src/compiler/turboshaft/types.h",
@@ -3216,8 +3272,10 @@ v8_header_set("v8_internal_headers") {
     "src/heap/memory-measurement-inl.h",
     "src/heap/memory-measurement.h",
     "src/heap/memory-reducer.h",
+    "src/heap/minor-gc-job.h",
     "src/heap/new-spaces-inl.h",
     "src/heap/new-spaces.h",
+    "src/heap/object-lock.h",
     "src/heap/object-stats.h",
     "src/heap/objects-visiting-inl.h",
     "src/heap/objects-visiting.h",
@@ -3234,14 +3292,11 @@ v8_header_set("v8_internal_headers") {
     "src/heap/remembered-set-inl.h",
     "src/heap/remembered-set.h",
     "src/heap/safepoint.h",
-    "src/heap/scavenge-job.h",
     "src/heap/scavenger-inl.h",
     "src/heap/scavenger.h",
     "src/heap/slot-set.h",
     "src/heap/spaces-inl.h",
     "src/heap/spaces.h",
-    "src/heap/stress-marking-observer.h",
-    "src/heap/stress-scavenge-observer.h",
     "src/heap/sweeper.h",
     "src/heap/traced-handles-marking-visitor.h",
     "src/heap/weak-object-worklists.h",
@@ -3724,6 +3779,7 @@ v8_header_set("v8_internal_headers") {
       "src/compiler/wasm-gc-lowering.h",
       "src/compiler/wasm-gc-operator-reducer.h",
       "src/compiler/wasm-graph-assembler.h",
+      "src/compiler/wasm-inlining-into-js.h",
       "src/compiler/wasm-inlining.h",
       "src/compiler/wasm-load-elimination.h",
       "src/compiler/wasm-loop-peeling.h",
@@ -3791,6 +3847,7 @@ v8_header_set("v8_internal_headers") {
       "src/wasm/wasm-subtyping.h",
       "src/wasm/wasm-tier.h",
       "src/wasm/wasm-value.h",
+      "src/wasm/well-known-imports.h",
     ]
   }
 
@@ -3834,8 +3891,6 @@ v8_header_set("v8_internal_headers") {
       "src/objects/js-segment-iterator.h",
       "src/objects/js-segmenter-inl.h",
       "src/objects/js-segmenter.h",
-      "src/objects/js-segments-inl.h",
-      "src/objects/js-segments.h",
     ]
   }
 
@@ -3847,13 +3902,6 @@ v8_header_set("v8_internal_headers") {
     sources += [ "src/heap/conservative-stack-visitor.h" ]
   }
 
-  if (v8_enable_inner_pointer_resolution_osb) {
-    sources += [
-      "src/heap/object-start-bitmap-inl.h",
-      "src/heap/object-start-bitmap.h",
-    ]
-  }
-
   if (v8_enable_wasm_gdb_remote_debugging) {
     sources += [
       "src/debug/wasm/gdb-server/gdb-remote-util.h",
@@ -4084,12 +4132,10 @@ v8_header_set("v8_internal_headers") {
       "src/baseline/riscv/baseline-assembler-riscv-inl.h",
       "src/baseline/riscv/baseline-compiler-riscv-inl.h",
       "src/codegen/riscv/assembler-riscv-inl.h",
-      "src/codegen/riscv/assembler-riscv-inl.h",
       "src/codegen/riscv/assembler-riscv.h",
       "src/codegen/riscv/base-assembler-riscv.h",
       "src/codegen/riscv/base-constants-riscv.h",
       "src/codegen/riscv/base-riscv-i.h",
-      "src/codegen/riscv/base-riscv-i.h",
       "src/codegen/riscv/constant-riscv-a.h",
       "src/codegen/riscv/constant-riscv-c.h",
       "src/codegen/riscv/constant-riscv-d.h",
@@ -4102,7 +4148,7 @@ v8_header_set("v8_internal_headers") {
       "src/codegen/riscv/extension-riscv-a.h",
       "src/codegen/riscv/extension-riscv-c.h",
       "src/codegen/riscv/extension-riscv-d.h",
-      "src/codegen/riscv/extension-riscv-d.h",
+      "src/codegen/riscv/extension-riscv-f.h",
       "src/codegen/riscv/extension-riscv-inl.h",
       "src/codegen/riscv/extension-riscv-m.h",
       "src/codegen/riscv/extension-riscv-v.h",
@@ -4123,8 +4169,8 @@ v8_header_set("v8_internal_headers") {
       ### gcmole(riscv32) ###
       "src/baseline/riscv/baseline-assembler-riscv-inl.h",
       "src/baseline/riscv/baseline-compiler-riscv-inl.h",
+      "src/codegen/riscv/assembler-riscv-inl.h",
       "src/codegen/riscv/assembler-riscv.h",
-      "src/codegen/riscv/assembler-riscv32-inl.h",
       "src/codegen/riscv/base-assembler-riscv.h",
       "src/codegen/riscv/base-constants-riscv.h",
       "src/codegen/riscv/base-riscv-i.h",
@@ -4282,6 +4328,7 @@ v8_compiler_sources = [
   "src/compiler/simplified-operator.cc",
   "src/compiler/state-values-utils.cc",
   "src/compiler/store-store-elimination.cc",
+  "src/compiler/string-builder-optimizer.cc",
   "src/compiler/turbofan-enabled.cc",
   "src/compiler/type-cache.cc",
   "src/compiler/type-narrowing-reducer.cc",
@@ -4387,6 +4434,7 @@ if (v8_enable_webassembly) {
     "src/compiler/wasm-gc-lowering.cc",
     "src/compiler/wasm-gc-operator-reducer.cc",
     "src/compiler/wasm-graph-assembler.cc",
+    "src/compiler/wasm-inlining-into-js.cc",
     "src/compiler/wasm-inlining.cc",
     "src/compiler/wasm-load-elimination.cc",
     "src/compiler/wasm-loop-peeling.cc",
@@ -4471,18 +4519,29 @@ v8_source_set("v8_turboshaft") {
 
   sources = [
     "src/compiler/turboshaft/assembler.cc",
+    "src/compiler/turboshaft/build-graph-phase.cc",
+    "src/compiler/turboshaft/dead-code-elimination-phase.cc",
+    "src/compiler/turboshaft/decompression-optimization-phase.cc",
     "src/compiler/turboshaft/decompression-optimization.cc",
     "src/compiler/turboshaft/graph-builder.cc",
     "src/compiler/turboshaft/graph-visualizer.cc",
     "src/compiler/turboshaft/graph.cc",
     "src/compiler/turboshaft/late-escape-analysis-reducer.cc",
-    "src/compiler/turboshaft/memory-optimization.cc",
+    "src/compiler/turboshaft/late-optimization-phase.cc",
+    "src/compiler/turboshaft/machine-lowering-phase.cc",
+    "src/compiler/turboshaft/memory-optimization-reducer.cc",
     "src/compiler/turboshaft/operations.cc",
     "src/compiler/turboshaft/optimization-phase.cc",
+    "src/compiler/turboshaft/optimize-phase.cc",
+    "src/compiler/turboshaft/phase.cc",
+    "src/compiler/turboshaft/recreate-schedule-phase.cc",
     "src/compiler/turboshaft/recreate-schedule.cc",
     "src/compiler/turboshaft/representations.cc",
     "src/compiler/turboshaft/simplify-tf-loops.cc",
+    "src/compiler/turboshaft/tag-untag-lowering-phase.cc",
+    "src/compiler/turboshaft/type-assertions-phase.cc",
     "src/compiler/turboshaft/type-parser.cc",
+    "src/compiler/turboshaft/typed-optimizations-phase.cc",
     "src/compiler/turboshaft/typer.cc",
     "src/compiler/turboshaft/types.cc",
     "src/compiler/turboshaft/utils.cc",
@@ -4732,6 +4791,7 @@ v8_source_set("v8_base_without_compiler") {
     "src/heap/memory-chunk.cc",
     "src/heap/memory-measurement.cc",
     "src/heap/memory-reducer.cc",
+    "src/heap/minor-gc-job.cc",
     "src/heap/new-spaces.cc",
     "src/heap/object-stats.cc",
     "src/heap/objects-visiting.cc",
@@ -4740,11 +4800,9 @@ v8_source_set("v8_base_without_compiler") {
     "src/heap/read-only-heap.cc",
     "src/heap/read-only-spaces.cc",
     "src/heap/safepoint.cc",
-    "src/heap/scavenge-job.cc",
     "src/heap/scavenger.cc",
     "src/heap/slot-set.cc",
     "src/heap/spaces.cc",
-    "src/heap/stress-marking-observer.cc",
     "src/heap/stress-scavenge-observer.cc",
     "src/heap/sweeper.cc",
     "src/heap/traced-handles-marking-visitor.cc",
@@ -5075,6 +5133,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/wasm/wasm-result.cc",
       "src/wasm/wasm-serialization.cc",
       "src/wasm/wasm-subtyping.cc",
+      "src/wasm/well-known-imports.cc",
     ]
   }
 
@@ -5377,7 +5436,7 @@ v8_source_set("v8_base_without_compiler") {
     deps += [ ":run_gen-regexp-special-case" ]
     sources += [ "$target_gen_dir/src/regexp/special-case.cc" ]
     if (is_win) {
-      deps += [ "//third_party/icu:icudata" ]
+      deps += [ "$v8_icu_path:icudata" ]
     }
   } else {
     sources -= [
@@ -5403,8 +5462,8 @@ v8_source_set("v8_base_without_compiler") {
 
   if (v8_use_zlib) {
     deps += [
-      "//third_party/zlib",
-      "//third_party/zlib/google:compression_utils_portable",
+      "$v8_zlib_path",
+      "$v8_zlib_path/google:compression_utils_portable",
     ]
   }
 
@@ -5468,7 +5527,6 @@ v8_source_set("torque_base") {
     "src/torque/cfg.h",
     "src/torque/class-debug-reader-generator.cc",
     "src/torque/constants.h",
-    "src/torque/contextual.h",
     "src/torque/cpp-builder.cc",
     "src/torque/cpp-builder.h",
     "src/torque/csa-generator.cc",
@@ -5598,6 +5656,7 @@ v8_component("v8_libbase") {
     "src/base/build_config.h",
     "src/base/compiler-specific.h",
     "src/base/container-utils.h",
+    "src/base/contextual.h",
     "src/base/cpu.cc",
     "src/base/cpu.h",
     "src/base/debug/stack_trace.cc",
@@ -5655,6 +5714,7 @@ v8_component("v8_libbase") {
     "src/base/platform/memory.h",
     "src/base/platform/mutex.cc",
     "src/base/platform/mutex.h",
+    "src/base/platform/platform.cc",
     "src/base/platform/platform.h",
     "src/base/platform/semaphore.cc",
     "src/base/platform/semaphore.h",
@@ -5788,6 +5848,7 @@ v8_component("v8_libbase") {
     sources += [
       "src/base/debug/stack_trace_posix.cc",
       "src/base/platform/platform-darwin.cc",
+      "src/base/platform/platform-ios.cc",
     ]
   } else if (is_win) {
     # TODO(infra): Add support for cygwin.
@@ -6285,11 +6346,12 @@ if (v8_check_header_includes) {
 #
 
 if (v8_monolithic) {
-  # A component build is not monolithic.
-  assert(!is_component_build)
+  assert(!is_component_build,
+         "Set `is_component_build = false` for v8_monolithic.")
 
   # Using external startup data would produce separate files.
-  assert(!v8_use_external_startup_data)
+  assert(!v8_use_external_startup_data,
+         "Set `v8_use_external_startup_data = false` for v8_monolithic.")
   v8_static_library("v8_monolith") {
     deps = [
       ":v8",
@@ -6476,7 +6538,7 @@ if (v8_enable_i18n_support) {
         ":v8_libbase",
         ":v8_shared_internal_headers",
         "//build/win:default_exe_manifest",
-        "//third_party/icu",
+        v8_icu_path,
       ]
 
       configs = [ ":internal_config" ]
diff --git a/other/SSE2/build/config/compiler/BUILD.gn b/other/SSE2/build/config/compiler/BUILD.gn
index b838c618..db92c7f0 100644
--- a/other/SSE2/build/config/compiler/BUILD.gn
+++ b/other/SSE2/build/config/compiler/BUILD.gn
@@ -2062,7 +2062,6 @@ if (is_win) {
 
   common_optimize_on_cflags += [
     "-Xclang", "-freroll-loops",
-    "-mllvm", "-extra-vectorizer-passes",
     "-mllvm", "-enable-cond-stores-vec",
     "-mllvm", "-slp-vectorize-hor-store",
     "-mllvm", "-adce-remove-loops",
@@ -2070,25 +2069,23 @@ if (is_win) {
     "-mllvm", "-enable-cse-in-legalizer",
     "-mllvm", "-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm", "-loop-rotate-multi",
-    "-mllvm", "-enable-loopinterchange",
     "-mllvm", "-enable-loop-distribute",
     "-mllvm", "-enable-unroll-and-jam",
-    "-mllvm", "-enable-loop-flatten",
     "-mllvm", "-interleave-small-loop-scalar-reduction",
-    "-mllvm", "-unroll-runtime",
-    "-mllvm", "-unroll-runtime-multi-exit",
     "-mllvm", "-aggressive-ext-opt",
     "-mllvm", "-enable-interleaved-mem-accesses",
     "-mllvm", "-enable-masked-interleaved-mem-accesses",
     "-mllvm", "-enable-gvn-hoist",
+    "-mllvm", "-enable-dfa-jump-thread",
     "/O2",
     "/clang:-O3",
-    "/clang:-msse2",
+    "/clang:-mavx",
+    "/clang:-maes",
+    "/clang:-mpclmul",
     "-Xclang", "-O3",
   ]
 
   common_optimize_on_ldflags += [
-    "-mllvm:-extra-vectorizer-passes",
     "-mllvm:-enable-cond-stores-vec",
     "-mllvm:-slp-vectorize-hor-store",
     "-mllvm:-adce-remove-loops",
@@ -2096,17 +2093,14 @@ if (is_win) {
     "-mllvm:-enable-cse-in-legalizer",
     "-mllvm:-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm:-loop-rotate-multi",
-    "-mllvm:-enable-loopinterchange",
     "-mllvm:-enable-loop-distribute",
     "-mllvm:-enable-unroll-and-jam",
-    "-mllvm:-enable-loop-flatten",
     "-mllvm:-interleave-small-loop-scalar-reduction",
-    "-mllvm:-unroll-runtime",
-    "-mllvm:-unroll-runtime-multi-exit",
     "-mllvm:-aggressive-ext-opt",
     "-mllvm:-enable-interleaved-mem-accesses",
     "-mllvm:-enable-masked-interleaved-mem-accesses",
     "-mllvm:-enable-gvn-hoist",
+    "-mllvm:-enable-dfa-jump-thread",
   ]
 
   if (use_polly == true) {
@@ -2136,7 +2130,6 @@ if (is_win) {
 
   common_optimize_on_cflags += [
     "-freroll-loops",
-    "-mllvm", "-extra-vectorizer-passes",
     "-mllvm", "-enable-cond-stores-vec",
     "-mllvm", "-slp-vectorize-hor-store",
     "-mllvm", "-adce-remove-loops",
@@ -2144,23 +2137,19 @@ if (is_win) {
     "-mllvm", "-enable-cse-in-legalizer",
     "-mllvm", "-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm", "-loop-rotate-multi",
-    "-mllvm", "-enable-loopinterchange",
     "-mllvm", "-enable-loop-distribute",
     "-mllvm", "-enable-unroll-and-jam",
-    "-mllvm", "-enable-loop-flatten",
     "-mllvm", "-interleave-small-loop-scalar-reduction",
-    "-mllvm", "-unroll-runtime",
-    "-mllvm", "-unroll-runtime-multi-exit",
     "-mllvm", "-aggressive-ext-opt",
     "-mllvm", "-enable-interleaved-mem-accesses",
     "-mllvm", "-enable-masked-interleaved-mem-accesses",
     "-mllvm", "-enable-gvn-hoist",
+    "-mllvm", "-enable-dfa-jump-thread",
     "-O3",
   ]
 
   common_optimize_on_ldflags += [
     "-freroll-loops",
-    "-Wl,-mllvm,-extra-vectorizer-passes",
     "-Wl,-mllvm,-enable-cond-stores-vec",
     "-Wl,-mllvm,-slp-vectorize-hor-store",
     "-Wl,-mllvm,-adce-remove-loops",
@@ -2168,17 +2157,14 @@ if (is_win) {
     "-Wl,-mllvm,-enable-cse-in-legalizer",
     "-Wl,-mllvm,-scalar-evolution-use-expensive-range-sharpening",
     "-Wl,-mllvm,-loop-rotate-multi",
-    "-Wl,-mllvm,-enable-loopinterchange",
     "-Wl,-mllvm,-enable-loop-distribute",
     "-Wl,-mllvm,-enable-unroll-and-jam",
-    "-Wl,-mllvm,-enable-loop-flatten",
     "-Wl,-mllvm,-interleave-small-loop-scalar-reduction",
-    "-Wl,-mllvm,-unroll-runtime",
-    "-Wl,-mllvm,-unroll-runtime-multi-exit",
     "-Wl,-mllvm,-aggressive-ext-opt",
     "-Wl,-mllvm,-enable-interleaved-mem-accesses",
     "-Wl,-mllvm,-enable-masked-interleaved-mem-accesses",
     "-Wl,-mllvm,-enable-gvn-hoist",
+    "-Wl,-mllvm,-enable-dfa-jump-thread",
     "-Wl,-O3",
   ]
 
diff --git a/other/SSE2/build/config/win/BUILD.gn b/other/SSE2/build/config/win/BUILD.gn
index a9fb4fc2..61e9b23e 100644
--- a/other/SSE2/build/config/win/BUILD.gn
+++ b/other/SSE2/build/config/win/BUILD.gn
@@ -296,10 +296,7 @@ config("runtime_library") {
   }
 }
 
-# Chromium supports running on Windows 7, but if these constants are set to
-# Windows 7, then newer APIs aren't made available by the Windows SDK.
-# So we set this to Windows 10 and then are careful to check at runtime
-# to only call newer APIs when they're available.
+# Chromium only supports Windowes 10+.
 # Some third-party libraries assume that these defines set what version of
 # Windows is available at runtime. Targets using these libraries need to
 # manually override this config for their compiles.
diff --git a/other/SSE3/build/config/compiler/BUILD.gn b/other/SSE3/build/config/compiler/BUILD.gn
index 5b4cac9a..9c2971f3 100644
--- a/other/SSE3/build/config/compiler/BUILD.gn
+++ b/other/SSE3/build/config/compiler/BUILD.gn
@@ -581,11 +581,6 @@ config("compiler") {
     }
   }
 
-  # Rust compiler setup (for either clang or rustc).
-  if (enable_rust) {
-    defines += [ "RUST_ENABLED" ]
-  }
-
   # C11/C++11 compiler flags setup.
   # ---------------------------
   if (is_linux || is_chromeos || is_android || (is_nacl && is_clang) ||
@@ -714,14 +709,10 @@ config("compiler") {
       # of "all" which means number of hardware threads) is faster.
       ldflags += [ "-Wl,--thinlto-jobs=all" ]
       if (is_apple) {
-        _object_path_suffix = ""
-        if (is_ios) {
-          _object_path_suffix = ",persist"
-        }
         ldflags += [
           "-Wl,-cache_path_lto," +
               rebase_path("$root_out_dir/thinlto-cache", root_build_dir),
-          "-Wcrl,object_path_lto" + _object_path_suffix,
+          "-Wcrl,object_path_lto",
         ]
       } else {
         ldflags +=
@@ -734,9 +725,8 @@ config("compiler") {
         # ARM was originally set lower than x86 to keep the size
         # bloat of ThinLTO to <10%, but that's potentially no longer true.
         # FIXME(inglorion): maybe tune these?
-        if (target_cpu == "arm" || target_cpu == "arm64") {
-          import_instr_limit = 30
-        }
+        # TODO(b/271459198): Revert limit on amd64 to 30 when fixed.
+        import_instr_limit = 30
       } else if (is_android) {
         # TODO(crbug.com/1308318): Investigate if we can get the > 6% perf win
         # of import_instr_limit 30 with a binary size hit smaller than ~2 MiB.
@@ -890,9 +880,10 @@ config("compiler") {
     # to compile dylibs on Android, such as for constructing unit test APKs.
     "-Cdefault-linker-libraries",
 
-    # Turn warnings into the "deny" lint level, which produce compiler errors.
-    # The equivalent of -Werror for clang/gcc.
-    "-Dwarnings",
+    # Require `unsafe` blocks even in `unsafe` fns. This is intended to become
+    # an error by default eventually; see
+    # https://github.com/rust-lang/rust/issues/71668
+    "-Dunsafe_op_in_unsafe_fn",
 
     # To make Rust .d files compatible with ninja
     "-Zdep-info-omit-d-target",
@@ -911,12 +902,8 @@ config("compiler") {
   if (rust_abi_target != "") {
     rustflags += [ "--target=$rust_abi_target" ]
   }
-  if (!use_thin_lto || !use_chromium_rust_toolchain) {
-    # Don't include bitcode if it won't be used, or can't be used. When
-    # use_thin_lto is true, we will try to apply LTO to any objects that have
-    # the appropriate bitcode. But we have to use Chromium's toolchain in order
-    # to use LTO with rust code. Chromium's rustc will have an LLVM backend that
-    # matches the C++ clang compiler.
+  if (!use_thin_lto) {
+    # Don't include bitcode if it won't be used.
     rustflags += [ "-Cembed-bitcode=no" ]
   }
   if (is_official_build) {
@@ -1330,7 +1317,7 @@ config("compiler_codegen") {
     configs += [ "//build/config/nacl:compiler_codegen" ]
   }
 
-  if (current_cpu == "arm64" && !is_win) {
+  if (current_cpu == "arm64" && !is_win && is_clang) {
     # Disable outlining everywhere on arm64 except Win. For more information see
     # crbug.com/931297 for Android and crbug.com/1410297 for iOS.
     # TODO(crbug.com/1411363): Enable this on Windows if possible.
@@ -1759,6 +1746,15 @@ config("chromium_code") {
       cflags += [ "-Wextra" ]
     }
 
+    if (treat_warnings_as_errors) {
+      # Turn rustc warnings into the "deny" lint level, which produce compiler
+      # errors. The equivalent of -Werror for clang/gcc.
+      #
+      # Note we apply the actual lint flags in config("compiler"). All warnings
+      # are suppressed in third-party crates.
+      rustflags = [ "-Dwarnings" ]
+    }
+
     # In Chromium code, we define __STDC_foo_MACROS in order to get the
     # C99 macros on Mac and Linux.
     defines = [
@@ -1798,8 +1794,8 @@ config("chromium_code") {
     ]
 
     # TODO(thakis): Enable this more often, https://crbug.com/346399
-    # use_libfuzzer: https://crbug.com/1063180
-    if ((!is_nacl || is_nacl_saigo) && !use_libfuzzer) {
+    # use_fuzzing_engine_with_lpm: https://crbug.com/1063180
+    if ((!is_nacl || is_nacl_saigo) && !use_fuzzing_engine_with_lpm) {
       cflags += [ "-Wunreachable-code-aggressive" ]
     }
 
@@ -2062,7 +2058,6 @@ if (is_win) {
 
   common_optimize_on_cflags += [
     "-Xclang", "-freroll-loops",
-    "-mllvm", "-extra-vectorizer-passes",
     "-mllvm", "-enable-cond-stores-vec",
     "-mllvm", "-slp-vectorize-hor-store",
     "-mllvm", "-adce-remove-loops",
@@ -2070,25 +2065,23 @@ if (is_win) {
     "-mllvm", "-enable-cse-in-legalizer",
     "-mllvm", "-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm", "-loop-rotate-multi",
-    "-mllvm", "-enable-loopinterchange",
     "-mllvm", "-enable-loop-distribute",
     "-mllvm", "-enable-unroll-and-jam",
-    "-mllvm", "-enable-loop-flatten",
     "-mllvm", "-interleave-small-loop-scalar-reduction",
-    "-mllvm", "-unroll-runtime",
-    "-mllvm", "-unroll-runtime-multi-exit",
     "-mllvm", "-aggressive-ext-opt",
     "-mllvm", "-enable-interleaved-mem-accesses",
     "-mllvm", "-enable-masked-interleaved-mem-accesses",
     "-mllvm", "-enable-gvn-hoist",
+    "-mllvm", "-enable-dfa-jump-thread",
     "/O2",
     "/clang:-O3",
-    "/clang:-msse3",
+    "/clang:-mavx",
+    "/clang:-maes",
+    "/clang:-mpclmul",
     "-Xclang", "-O3",
   ]
 
   common_optimize_on_ldflags += [
-    "-mllvm:-extra-vectorizer-passes",
     "-mllvm:-enable-cond-stores-vec",
     "-mllvm:-slp-vectorize-hor-store",
     "-mllvm:-adce-remove-loops",
@@ -2096,17 +2089,14 @@ if (is_win) {
     "-mllvm:-enable-cse-in-legalizer",
     "-mllvm:-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm:-loop-rotate-multi",
-    "-mllvm:-enable-loopinterchange",
     "-mllvm:-enable-loop-distribute",
     "-mllvm:-enable-unroll-and-jam",
-    "-mllvm:-enable-loop-flatten",
     "-mllvm:-interleave-small-loop-scalar-reduction",
-    "-mllvm:-unroll-runtime",
-    "-mllvm:-unroll-runtime-multi-exit",
     "-mllvm:-aggressive-ext-opt",
     "-mllvm:-enable-interleaved-mem-accesses",
     "-mllvm:-enable-masked-interleaved-mem-accesses",
     "-mllvm:-enable-gvn-hoist",
+    "-mllvm:-enable-dfa-jump-thread",
   ]
 
   if (use_polly == true) {
@@ -2136,7 +2126,6 @@ if (is_win) {
 
   common_optimize_on_cflags += [
     "-freroll-loops",
-    "-mllvm", "-extra-vectorizer-passes",
     "-mllvm", "-enable-cond-stores-vec",
     "-mllvm", "-slp-vectorize-hor-store",
     "-mllvm", "-adce-remove-loops",
@@ -2144,23 +2133,19 @@ if (is_win) {
     "-mllvm", "-enable-cse-in-legalizer",
     "-mllvm", "-scalar-evolution-use-expensive-range-sharpening",
     "-mllvm", "-loop-rotate-multi",
-    "-mllvm", "-enable-loopinterchange",
     "-mllvm", "-enable-loop-distribute",
     "-mllvm", "-enable-unroll-and-jam",
-    "-mllvm", "-enable-loop-flatten",
     "-mllvm", "-interleave-small-loop-scalar-reduction",
-    "-mllvm", "-unroll-runtime",
-    "-mllvm", "-unroll-runtime-multi-exit",
     "-mllvm", "-aggressive-ext-opt",
     "-mllvm", "-enable-interleaved-mem-accesses",
     "-mllvm", "-enable-masked-interleaved-mem-accesses",
     "-mllvm", "-enable-gvn-hoist",
+    "-mllvm", "-enable-dfa-jump-thread",
     "-O3",
   ]
 
   common_optimize_on_ldflags += [
     "-freroll-loops",
-    "-Wl,-mllvm,-extra-vectorizer-passes",
     "-Wl,-mllvm,-enable-cond-stores-vec",
     "-Wl,-mllvm,-slp-vectorize-hor-store",
     "-Wl,-mllvm,-adce-remove-loops",
@@ -2168,17 +2153,14 @@ if (is_win) {
     "-Wl,-mllvm,-enable-cse-in-legalizer",
     "-Wl,-mllvm,-scalar-evolution-use-expensive-range-sharpening",
     "-Wl,-mllvm,-loop-rotate-multi",
-    "-Wl,-mllvm,-enable-loopinterchange",
     "-Wl,-mllvm,-enable-loop-distribute",
     "-Wl,-mllvm,-enable-unroll-and-jam",
-    "-Wl,-mllvm,-enable-loop-flatten",
     "-Wl,-mllvm,-interleave-small-loop-scalar-reduction",
-    "-Wl,-mllvm,-unroll-runtime",
-    "-Wl,-mllvm,-unroll-runtime-multi-exit",
     "-Wl,-mllvm,-aggressive-ext-opt",
     "-Wl,-mllvm,-enable-interleaved-mem-accesses",
     "-Wl,-mllvm,-enable-masked-interleaved-mem-accesses",
     "-Wl,-mllvm,-enable-gvn-hoist",
+    "-Wl,-mllvm,-enable-dfa-jump-thread",
     "-Wl,-O3",
   ]
 
@@ -2466,10 +2448,12 @@ if (is_clang && is_a_target_toolchain) {
     if (is_android || is_castos) {
       _clang_sample_profile = "//chrome/android/profiles/afdo.prof"
     } else {
-      assert(chromeos_afdo_platform == "atom" ||
-                 chromeos_afdo_platform == "bigcore" ||
-                 chromeos_afdo_platform == "arm",
-             "Only atom, bigcore and arm are valid Chrome OS profiles.")
+      assert(
+          chromeos_afdo_platform == "atom" ||
+              chromeos_afdo_platform == "bigcore" ||
+              chromeos_afdo_platform == "arm" ||
+              chromeos_afdo_platform == "arm-exp",
+          "Only 'atom', 'bigcore', 'arm' and 'arm-exp' are valid ChromeOS profiles.")
       _clang_sample_profile =
           "//chromeos/profiles/${chromeos_afdo_platform}.afdo.prof"
     }
@@ -2823,9 +2807,12 @@ if (is_chromeos_ash && is_chromeos_device) {
 if (is_android || (is_chromeos_ash && is_chromeos_device)) {
   # Use orderfile for linking Chrome on Android and Chrome OS.
   # This config enables using an orderfile for linking in LLD.
-  # TODO: Consider using call graph sort instead, at least on Android.
   config("chrome_orderfile_config") {
-    if (chrome_orderfile_path != "" && !enable_call_graph_profile_sort) {
+    # Don't try to use an orderfile with call graph sorting, except on Android,
+    # where we care about memory used by code, so we still want to mandate
+    # ordering.
+    if (chrome_orderfile_path != "" &&
+        (is_android || !enable_call_graph_profile_sort)) {
       assert(use_lld)
       _rebased_orderfile = rebase_path(chrome_orderfile_path, root_build_dir)
       ldflags = [
diff --git a/other/SSE3/build/config/win/BUILD.gn b/other/SSE3/build/config/win/BUILD.gn
index 5dc65cef..19fc860d 100644
--- a/other/SSE3/build/config/win/BUILD.gn
+++ b/other/SSE3/build/config/win/BUILD.gn
@@ -297,10 +297,7 @@ config("runtime_library") {
   }
 }
 
-# Chromium supports running on Windows 7, but if these constants are set to
-# Windows 7, then newer APIs aren't made available by the Windows SDK.
-# So we set this to Windows 10 and then are careful to check at runtime
-# to only call newer APIs when they're available.
+# Chromium only supports Windowes 10+.
 # Some third-party libraries assume that these defines set what version of
 # Windows is available at runtime. Targets using these libraries need to
 # manually override this config for their compiles.
diff --git a/other/SSE3/v8/BUILD.gn b/other/SSE3/v8/BUILD.gn
index 4125d4bb..3384e001 100644
--- a/other/SSE3/v8/BUILD.gn
+++ b/other/SSE3/v8/BUILD.gn
@@ -4,9 +4,11 @@
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
+import("//build/config/coverage/coverage.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/host_byteorder.gni")
 import("//build/config/mips.gni")
+import("//build/config/riscv.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build_overrides/build.gni")
 
@@ -123,6 +125,10 @@ declare_args() {
   # Use pre-generated static root pointer values from static-roots.h.
   v8_enable_static_roots = ""
 
+  # Mode used by gen-static-roots.py to have a heap layout which is identical
+  # to when v8_enable_static_roots is enabled.
+  v8_enable_static_root_generation = false
+
   # Enable code-generation-time checking of types in the CodeStubAssembler.
   v8_enable_verify_csa = false
 
@@ -271,6 +277,9 @@ declare_args() {
   # Use switch-based dispatch if this is false
   v8_enable_regexp_interpreter_threaded_dispatch = true
 
+  # Check mksnapshot determinism by running it multiple times.
+  v8_verify_deterministic_mksnapshot = false
+
   # Enable additional targets necessary for verification of torque
   # file generation
   v8_verify_torque_generation_invariance = false
@@ -375,6 +384,14 @@ declare_args() {
 
   # Make ValueDeserializer crash if the data to deserialize is invalid.
   v8_value_deserializer_hard_fail = false
+
+  # Enable jitless mode, including compile-time optimizations. Note that even
+  # when this is set to 'false', one can run V8 in jitless mode at runtime by
+  # passing the `--jitless` flag; but then you miss out on compile-time
+  # optimizations.
+  # iOS (non-simulator) does not have executable pages for 3rd party
+  # applications yet so disable jit.
+  v8_jitless = v8_enable_lite_mode || target_is_ios_device
 }
 
 # Derived defaults.
@@ -465,31 +482,10 @@ if (v8_enable_maglev == "") {
 assert(v8_enable_turbofan || !v8_enable_maglev,
        "Maglev is not available when Turbofan is disabled.")
 
-if (v8_builtins_profiling_log_file == "default") {
-  v8_builtins_profiling_log_file = ""
+assert(!v8_jitless ||
+           (!v8_enable_maglev && !v8_enable_turbofan && !v8_enable_webassembly),
+       "Maglev, Turbofan and Wasm are not available in jitless mode")
 
-  # Don't use existing profile when
-  # * generating a new one (i.e. v8_enable_builtins_profiling),
-  # * is_debug or dcheck_always_on because they add more checks to the
-  #   builtins control flow which we don't want to generate,
-  # * v8_enable_webassembly because it changes the set of opcodes which affects
-  #   graphs hashes,
-  # * !is_clang because it might affect argument evaluation order, which
-  #    makes node IDs not predictable for subgraphs like Op1(Op2(), Op3()) and
-  #    as a result different graph hash.
-  if (!v8_enable_builtins_profiling && is_clang && !is_debug &&
-      !dcheck_always_on && v8_enable_webassembly) {
-    if ((v8_current_cpu == "x64" || v8_current_cpu == "arm64") &&
-        v8_enable_pointer_compression && v8_enable_external_code_space) {
-      # Note, currently x64 profile can be applied to arm64 but not the other
-      # way round.
-      v8_builtins_profiling_log_file = "tools/builtins-pgo/x64.profile"
-    } else if (v8_current_cpu == "x86" || v8_current_cpu == "arm") {
-      # Note, x86 profile can be applied to arm but not the other way round.
-      v8_builtins_profiling_log_file = "tools/builtins-pgo/x86.profile"
-    }
-  }
-}
 if (v8_enable_single_generation == "") {
   v8_enable_single_generation = v8_disable_write_barriers
 }
@@ -565,6 +561,40 @@ assert(!v8_enable_static_roots ||
                 v8_enable_i18n_support),
        "Trying to enable static roots in a configuration that is not supported")
 
+assert(
+    !(v8_enable_static_roots && v8_enable_static_root_generation),
+    "Static root values must be generated in a build that does not rely on static roots itself")
+
+if (v8_builtins_profiling_log_file == "default") {
+  v8_builtins_profiling_log_file = ""
+
+  # Don't use existing profile when
+  # * v8_enable_builtins_optimization is disabled,
+  # * generating a new one (i.e. v8_enable_builtins_profiling),
+  # * is_debug or dcheck_always_on because they add more checks to the
+  #   builtins control flow which we don't want to generate,
+  # * !v8_enable_sandbox because it affects the way how external pointer values
+  #   are accessed,
+  # * v8_enable_webassembly because it changes the set of opcodes which affects
+  #   graphs hashes,
+  # * !is_clang because it might affect argument evaluation order, which
+  #    makes node IDs not predictable for subgraphs like Op1(Op2(), Op3()) and
+  #    as a result different graph hash.
+  if (v8_enable_builtins_optimization && !v8_enable_builtins_profiling &&
+      is_clang && !is_debug && !dcheck_always_on && v8_enable_webassembly) {
+    if ((v8_current_cpu == "x64" || v8_current_cpu == "arm64") &&
+        v8_enable_pointer_compression && v8_enable_external_code_space &&
+        v8_enable_sandbox) {
+      # Note, currently x64 profile can be applied to arm64 but not the other
+      # way round.
+      v8_builtins_profiling_log_file = "tools/builtins-pgo/profiles/x64.profile"
+    } else if (v8_current_cpu == "x86" || v8_current_cpu == "arm") {
+      # Note, x86 profile can be applied to arm but not the other way round.
+      v8_builtins_profiling_log_file = "tools/builtins-pgo/profiles/x86.profile"
+    }
+  }
+}
+
 if (v8_enable_webassembly && !target_is_simulator && v8_current_cpu == "x64") {
   v8_enable_wasm_simd256_revec = true
 }
@@ -626,12 +656,6 @@ assert(!cppgc_enable_young_generation || cppgc_enable_caged_heap,
 assert(!cppgc_enable_pointer_compression || cppgc_enable_caged_heap,
        "Pointer compression in CppGC requires caged heap")
 
-assert(
-    !v8_enable_conservative_stack_scanning ||
-        v8_enable_inner_pointer_resolution_osb ||
-        v8_enable_inner_pointer_resolution_mb,
-    "Conservative stack scanning requires inner pointer resolution (OSB or MB)")
-
 if (v8_enable_single_generation == true) {
   assert(
       v8_enable_unconditional_write_barriers || v8_disable_write_barriers,
@@ -995,12 +1019,6 @@ config("features") {
   if (v8_enable_single_generation) {
     defines += [ "V8_ENABLE_SINGLE_GENERATION" ]
   }
-  if (v8_enable_inner_pointer_resolution_osb) {
-    defines += [ "V8_ENABLE_INNER_POINTER_RESOLUTION_OSB" ]
-  }
-  if (v8_enable_inner_pointer_resolution_mb) {
-    defines += [ "V8_ENABLE_INNER_POINTER_RESOLUTION_MB" ]
-  }
   if (v8_disable_write_barriers) {
     defines += [ "V8_DISABLE_WRITE_BARRIERS" ]
   }
@@ -1061,6 +1079,9 @@ config("features") {
   if (v8_enable_turbofan) {
     defines += [ "V8_ENABLE_TURBOFAN" ]
   }
+  if (v8_jitless) {
+    defines += [ "V8_JITLESS" ]
+  }
   if (v8_enable_swiss_name_dictionary) {
     defines += [ "V8_ENABLE_SWISS_NAME_DICTIONARY" ]
   }
@@ -1106,6 +1127,9 @@ config("features") {
   if (v8_enable_static_roots) {
     defines += [ "V8_STATIC_ROOTS" ]
   }
+  if (v8_enable_static_root_generation) {
+    defines += [ "V8_STATIC_ROOT_GENERATION" ]
+  }
   if (v8_use_zlib) {
     defines += [ "V8_USE_ZLIB" ]
   }
@@ -1252,8 +1276,9 @@ config("toolchain") {
     if (!is_clang) {
       cflags += [ "-ffp-contract=off" ]
     }
-    if (target_is_simulator) {
+    if (riscv_use_rvv || target_is_simulator) {
       defines += [ "CAN_USE_RVV_INSTRUCTIONS" ]
+      defines += [ "RVV_VLEN=${riscv_rvv_vlen}" ]
     }
   }
 
@@ -1580,23 +1605,6 @@ config("always_turbofanimize") {
   }
 }
 
-# Configs for code coverage with gcov. Separate configs for cflags and ldflags
-# to selectively influde cflags in non-test targets only.
-config("v8_gcov_coverage_cflags") {
-  cflags = [
-    "-fprofile-arcs",
-    "-ftest-coverage",
-
-    # We already block on gcc warnings on other bots. Let's not block here to
-    # always generate coverage reports.
-    "-Wno-error",
-  ]
-}
-
-config("v8_gcov_coverage_ldflags") {
-  ldflags = [ "-fprofile-arcs" ]
-}
-
 ###############################################################################
 # Actions
 #
@@ -1630,12 +1638,8 @@ template("asm_to_inline_asm") {
 
 if (v8_postmortem_support) {
   action("postmortem-metadata") {
-    # Only targets in this file and the top-level visibility target can
-    # depend on this.
-    visibility = [
-      ":*",
-      "//:gn_visibility",
-    ]
+    # Only targets in this file can depend on this.
+    visibility = [ ":*" ]
 
     script = "tools/gen-postmortem-metadata.py"
 
@@ -1772,6 +1776,7 @@ torque_files = [
   "src/builtins/internal-coverage.tq",
   "src/builtins/internal.tq",
   "src/builtins/iterator.tq",
+  "src/builtins/iterator-from.tq",
   "src/builtins/iterator-helpers.tq",
   "src/builtins/math.tq",
   "src/builtins/number.tq",
@@ -2069,7 +2074,7 @@ if (v8_verify_torque_generation_invariance) {
 
 group("v8_maybe_icu") {
   if (v8_enable_i18n_support) {
-    public_deps = [ "//third_party/icu" ]
+    public_deps = [ v8_icu_path ]
   }
 }
 
@@ -2317,10 +2322,44 @@ if (emit_builtins_as_inline_asm) {
   }
 }
 
+if (v8_verify_deterministic_mksnapshot) {
+  runs = [
+    "run_0",
+    "run_1",
+    "run_2",
+    "run_3",
+    "run_4",
+    "run_5",
+    "run_6",
+  ]
+
+  foreach(i, runs) {
+    run_mksnapshot(i) {
+      args = []
+      embedded_variant = "Default"
+    }
+  }
+
+  action("verify_deterministic_mksnapshot") {
+    deps = []
+    foreach(i, runs) {
+      deps += [ ":run_mksnapshot_$i" ]
+    }
+    report_file = "$target_gen_dir/mksnapshot_comparison.txt"
+    script = "tools/snapshot/compare_mksnapshot_output.py"
+    args = [
+      rebase_path("$report_file", root_build_dir),
+      rebase_path("$target_gen_dir", root_build_dir),
+      rebase_path("$root_out_dir", root_build_dir),
+      "7",  # Length of the 'runs' list.
+    ]
+    outputs = [ report_file ]
+  }
+}
+
 action("v8_dump_build_config") {
   script = "tools/testrunner/utils/dump_build_config.py"
   outputs = [ "$root_out_dir/v8_build_config.json" ]
-  is_gcov_coverage = v8_code_coverage && !is_clang
   is_DEBUG_defined = v8_enable_debugging_features || dcheck_always_on
   is_full_debug = v8_enable_debugging_features && !v8_optimized_debug
   args = [
@@ -2331,11 +2370,11 @@ action("v8_dump_build_config") {
     "is_asan=$is_asan",
     "is_cfi=$is_cfi",
     "is_clang=$is_clang",
+    "is_clang_coverage=$use_clang_coverage",
     "is_component_build=$is_component_build",
     "is_debug=$v8_enable_debugging_features",
     "is_DEBUG_defined=$is_DEBUG_defined",
     "is_full_debug=$is_full_debug",
-    "is_gcov_coverage=$is_gcov_coverage",
     "is_msan=$is_msan",
     "is_tsan=$is_tsan",
     "is_ubsan_vptr=$is_ubsan_vptr",
@@ -2371,6 +2410,7 @@ action("v8_dump_build_config") {
     "v8_enable_verify_heap=$v8_enable_verify_heap",
     "v8_enable_verify_predictable=$v8_enable_verify_predictable",
     "v8_enable_webassembly=$v8_enable_webassembly",
+    "v8_jitless=$v8_jitless",
     "v8_target_cpu=\"$v8_target_cpu\"",
   ]
 
@@ -2387,7 +2427,10 @@ action("v8_dump_build_config") {
 #
 
 v8_source_set("v8_snapshot") {
-  visibility = [ ":*" ]  # Targets in this file can depend on this.
+  # Let external targets depend on v8_snapshot.
+  if (v8_use_external_startup_data) {
+    visibility = [ ":*" ]  # Targets in this file can depend on this.
+  }
 
   deps = [
     ":v8_internal_headers",
@@ -2421,9 +2464,6 @@ v8_source_set("v8_snapshot") {
 
     sources += [ "src/snapshot/snapshot-external.cc" ]
   } else {
-    # Also top-level visibility targets can depend on this.
-    visibility += [ "//:gn_visibility" ]
-
     public_deps += [ ":v8_maybe_icu" ]
 
     sources += [ "$target_gen_dir/snapshot.cc" ]
@@ -2988,6 +3028,7 @@ v8_header_set("v8_internal_headers") {
     "src/compiler/osr.h",
     "src/compiler/per-isolate-compiler-cache.h",
     "src/compiler/persistent-map.h",
+    "src/compiler/phase.h",
     "src/compiler/pipeline-statistics.h",
     "src/compiler/pipeline.h",
     "src/compiler/processed-feedback.h",
@@ -3005,11 +3046,16 @@ v8_header_set("v8_internal_headers") {
     "src/compiler/simplified-operator.h",
     "src/compiler/state-values-utils.h",
     "src/compiler/store-store-elimination.h",
+    "src/compiler/string-builder-optimizer.h",
     "src/compiler/turbofan.h",
     "src/compiler/turboshaft/assembler.h",
     "src/compiler/turboshaft/assert-types-reducer.h",
     "src/compiler/turboshaft/branch-elimination-reducer.h",
+    "src/compiler/turboshaft/build-graph-phase.h",
+    "src/compiler/turboshaft/builtin-call-descriptors.h",
+    "src/compiler/turboshaft/dead-code-elimination-phase.h",
     "src/compiler/turboshaft/dead-code-elimination-reducer.h",
+    "src/compiler/turboshaft/decompression-optimization-phase.h",
     "src/compiler/turboshaft/decompression-optimization.h",
     "src/compiler/turboshaft/define-assembler-macros.inc",
     "src/compiler/turboshaft/deopt-data.h",
@@ -3019,24 +3065,34 @@ v8_header_set("v8_internal_headers") {
     "src/compiler/turboshaft/graph.h",
     "src/compiler/turboshaft/index.h",
     "src/compiler/turboshaft/late-escape-analysis-reducer.h",
+    "src/compiler/turboshaft/late-optimization-phase.h",
     "src/compiler/turboshaft/layered-hash-map.h",
+    "src/compiler/turboshaft/machine-lowering-phase.h",
     "src/compiler/turboshaft/machine-lowering-reducer.h",
     "src/compiler/turboshaft/machine-optimization-reducer.h",
-    "src/compiler/turboshaft/memory-optimization.h",
+    "src/compiler/turboshaft/memory-optimization-reducer.h",
     "src/compiler/turboshaft/operation-matching.h",
     "src/compiler/turboshaft/operations.h",
     "src/compiler/turboshaft/optimization-phase.h",
+    "src/compiler/turboshaft/optimize-phase.h",
+    "src/compiler/turboshaft/phase.h",
+    "src/compiler/turboshaft/recreate-schedule-phase.h",
     "src/compiler/turboshaft/recreate-schedule.h",
     "src/compiler/turboshaft/reducer-traits.h",
     "src/compiler/turboshaft/representations.h",
+    "src/compiler/turboshaft/runtime-call-descriptors.h",
     "src/compiler/turboshaft/select-lowering-reducer.h",
     "src/compiler/turboshaft/sidetable.h",
     "src/compiler/turboshaft/simplify-tf-loops.h",
     "src/compiler/turboshaft/snapshot-table.h",
+    "src/compiler/turboshaft/tag-untag-lowering-phase.h",
     "src/compiler/turboshaft/tag-untag-lowering-reducer.h",
+    "src/compiler/turboshaft/tracing.h",
+    "src/compiler/turboshaft/type-assertions-phase.h",
     "src/compiler/turboshaft/type-inference-analysis.h",
     "src/compiler/turboshaft/type-inference-reducer.h",
     "src/compiler/turboshaft/type-parser.h",
+    "src/compiler/turboshaft/typed-optimizations-phase.h",
     "src/compiler/turboshaft/typed-optimizations-reducer.h",
     "src/compiler/turboshaft/typer.h",
     "src/compiler/turboshaft/types.h",
@@ -3216,8 +3272,10 @@ v8_header_set("v8_internal_headers") {
     "src/heap/memory-measurement-inl.h",
     "src/heap/memory-measurement.h",
     "src/heap/memory-reducer.h",
+    "src/heap/minor-gc-job.h",
     "src/heap/new-spaces-inl.h",
     "src/heap/new-spaces.h",
+    "src/heap/object-lock.h",
     "src/heap/object-stats.h",
     "src/heap/objects-visiting-inl.h",
     "src/heap/objects-visiting.h",
@@ -3234,14 +3292,11 @@ v8_header_set("v8_internal_headers") {
     "src/heap/remembered-set-inl.h",
     "src/heap/remembered-set.h",
     "src/heap/safepoint.h",
-    "src/heap/scavenge-job.h",
     "src/heap/scavenger-inl.h",
     "src/heap/scavenger.h",
     "src/heap/slot-set.h",
     "src/heap/spaces-inl.h",
     "src/heap/spaces.h",
-    "src/heap/stress-marking-observer.h",
-    "src/heap/stress-scavenge-observer.h",
     "src/heap/sweeper.h",
     "src/heap/traced-handles-marking-visitor.h",
     "src/heap/weak-object-worklists.h",
@@ -3724,6 +3779,7 @@ v8_header_set("v8_internal_headers") {
       "src/compiler/wasm-gc-lowering.h",
       "src/compiler/wasm-gc-operator-reducer.h",
       "src/compiler/wasm-graph-assembler.h",
+      "src/compiler/wasm-inlining-into-js.h",
       "src/compiler/wasm-inlining.h",
       "src/compiler/wasm-load-elimination.h",
       "src/compiler/wasm-loop-peeling.h",
@@ -3791,6 +3847,7 @@ v8_header_set("v8_internal_headers") {
       "src/wasm/wasm-subtyping.h",
       "src/wasm/wasm-tier.h",
       "src/wasm/wasm-value.h",
+      "src/wasm/well-known-imports.h",
     ]
   }
 
@@ -3834,8 +3891,6 @@ v8_header_set("v8_internal_headers") {
       "src/objects/js-segment-iterator.h",
       "src/objects/js-segmenter-inl.h",
       "src/objects/js-segmenter.h",
-      "src/objects/js-segments-inl.h",
-      "src/objects/js-segments.h",
     ]
   }
 
@@ -3847,13 +3902,6 @@ v8_header_set("v8_internal_headers") {
     sources += [ "src/heap/conservative-stack-visitor.h" ]
   }
 
-  if (v8_enable_inner_pointer_resolution_osb) {
-    sources += [
-      "src/heap/object-start-bitmap-inl.h",
-      "src/heap/object-start-bitmap.h",
-    ]
-  }
-
   if (v8_enable_wasm_gdb_remote_debugging) {
     sources += [
       "src/debug/wasm/gdb-server/gdb-remote-util.h",
@@ -4084,12 +4132,10 @@ v8_header_set("v8_internal_headers") {
       "src/baseline/riscv/baseline-assembler-riscv-inl.h",
       "src/baseline/riscv/baseline-compiler-riscv-inl.h",
       "src/codegen/riscv/assembler-riscv-inl.h",
-      "src/codegen/riscv/assembler-riscv-inl.h",
       "src/codegen/riscv/assembler-riscv.h",
       "src/codegen/riscv/base-assembler-riscv.h",
       "src/codegen/riscv/base-constants-riscv.h",
       "src/codegen/riscv/base-riscv-i.h",
-      "src/codegen/riscv/base-riscv-i.h",
       "src/codegen/riscv/constant-riscv-a.h",
       "src/codegen/riscv/constant-riscv-c.h",
       "src/codegen/riscv/constant-riscv-d.h",
@@ -4102,7 +4148,7 @@ v8_header_set("v8_internal_headers") {
       "src/codegen/riscv/extension-riscv-a.h",
       "src/codegen/riscv/extension-riscv-c.h",
       "src/codegen/riscv/extension-riscv-d.h",
-      "src/codegen/riscv/extension-riscv-d.h",
+      "src/codegen/riscv/extension-riscv-f.h",
       "src/codegen/riscv/extension-riscv-inl.h",
       "src/codegen/riscv/extension-riscv-m.h",
       "src/codegen/riscv/extension-riscv-v.h",
@@ -4123,8 +4169,8 @@ v8_header_set("v8_internal_headers") {
       ### gcmole(riscv32) ###
       "src/baseline/riscv/baseline-assembler-riscv-inl.h",
       "src/baseline/riscv/baseline-compiler-riscv-inl.h",
+      "src/codegen/riscv/assembler-riscv-inl.h",
       "src/codegen/riscv/assembler-riscv.h",
-      "src/codegen/riscv/assembler-riscv32-inl.h",
       "src/codegen/riscv/base-assembler-riscv.h",
       "src/codegen/riscv/base-constants-riscv.h",
       "src/codegen/riscv/base-riscv-i.h",
@@ -4282,6 +4328,7 @@ v8_compiler_sources = [
   "src/compiler/simplified-operator.cc",
   "src/compiler/state-values-utils.cc",
   "src/compiler/store-store-elimination.cc",
+  "src/compiler/string-builder-optimizer.cc",
   "src/compiler/turbofan-enabled.cc",
   "src/compiler/type-cache.cc",
   "src/compiler/type-narrowing-reducer.cc",
@@ -4387,6 +4434,7 @@ if (v8_enable_webassembly) {
     "src/compiler/wasm-gc-lowering.cc",
     "src/compiler/wasm-gc-operator-reducer.cc",
     "src/compiler/wasm-graph-assembler.cc",
+    "src/compiler/wasm-inlining-into-js.cc",
     "src/compiler/wasm-inlining.cc",
     "src/compiler/wasm-load-elimination.cc",
     "src/compiler/wasm-loop-peeling.cc",
@@ -4471,18 +4519,29 @@ v8_source_set("v8_turboshaft") {
 
   sources = [
     "src/compiler/turboshaft/assembler.cc",
+    "src/compiler/turboshaft/build-graph-phase.cc",
+    "src/compiler/turboshaft/dead-code-elimination-phase.cc",
+    "src/compiler/turboshaft/decompression-optimization-phase.cc",
     "src/compiler/turboshaft/decompression-optimization.cc",
     "src/compiler/turboshaft/graph-builder.cc",
     "src/compiler/turboshaft/graph-visualizer.cc",
     "src/compiler/turboshaft/graph.cc",
     "src/compiler/turboshaft/late-escape-analysis-reducer.cc",
-    "src/compiler/turboshaft/memory-optimization.cc",
+    "src/compiler/turboshaft/late-optimization-phase.cc",
+    "src/compiler/turboshaft/machine-lowering-phase.cc",
+    "src/compiler/turboshaft/memory-optimization-reducer.cc",
     "src/compiler/turboshaft/operations.cc",
     "src/compiler/turboshaft/optimization-phase.cc",
+    "src/compiler/turboshaft/optimize-phase.cc",
+    "src/compiler/turboshaft/phase.cc",
+    "src/compiler/turboshaft/recreate-schedule-phase.cc",
     "src/compiler/turboshaft/recreate-schedule.cc",
     "src/compiler/turboshaft/representations.cc",
     "src/compiler/turboshaft/simplify-tf-loops.cc",
+    "src/compiler/turboshaft/tag-untag-lowering-phase.cc",
+    "src/compiler/turboshaft/type-assertions-phase.cc",
     "src/compiler/turboshaft/type-parser.cc",
+    "src/compiler/turboshaft/typed-optimizations-phase.cc",
     "src/compiler/turboshaft/typer.cc",
     "src/compiler/turboshaft/types.cc",
     "src/compiler/turboshaft/utils.cc",
@@ -4732,6 +4791,7 @@ v8_source_set("v8_base_without_compiler") {
     "src/heap/memory-chunk.cc",
     "src/heap/memory-measurement.cc",
     "src/heap/memory-reducer.cc",
+    "src/heap/minor-gc-job.cc",
     "src/heap/new-spaces.cc",
     "src/heap/object-stats.cc",
     "src/heap/objects-visiting.cc",
@@ -4740,11 +4800,9 @@ v8_source_set("v8_base_without_compiler") {
     "src/heap/read-only-heap.cc",
     "src/heap/read-only-spaces.cc",
     "src/heap/safepoint.cc",
-    "src/heap/scavenge-job.cc",
     "src/heap/scavenger.cc",
     "src/heap/slot-set.cc",
     "src/heap/spaces.cc",
-    "src/heap/stress-marking-observer.cc",
     "src/heap/stress-scavenge-observer.cc",
     "src/heap/sweeper.cc",
     "src/heap/traced-handles-marking-visitor.cc",
@@ -5075,6 +5133,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/wasm/wasm-result.cc",
       "src/wasm/wasm-serialization.cc",
       "src/wasm/wasm-subtyping.cc",
+      "src/wasm/well-known-imports.cc",
     ]
   }
 
@@ -5377,7 +5436,7 @@ v8_source_set("v8_base_without_compiler") {
     deps += [ ":run_gen-regexp-special-case" ]
     sources += [ "$target_gen_dir/src/regexp/special-case.cc" ]
     if (is_win) {
-      deps += [ "//third_party/icu:icudata" ]
+      deps += [ "$v8_icu_path:icudata" ]
     }
   } else {
     sources -= [
@@ -5403,8 +5462,8 @@ v8_source_set("v8_base_without_compiler") {
 
   if (v8_use_zlib) {
     deps += [
-      "//third_party/zlib",
-      "//third_party/zlib/google:compression_utils_portable",
+      "$v8_zlib_path",
+      "$v8_zlib_path/google:compression_utils_portable",
     ]
   }
 
@@ -5468,7 +5527,6 @@ v8_source_set("torque_base") {
     "src/torque/cfg.h",
     "src/torque/class-debug-reader-generator.cc",
     "src/torque/constants.h",
-    "src/torque/contextual.h",
     "src/torque/cpp-builder.cc",
     "src/torque/cpp-builder.h",
     "src/torque/csa-generator.cc",
@@ -5598,6 +5656,7 @@ v8_component("v8_libbase") {
     "src/base/build_config.h",
     "src/base/compiler-specific.h",
     "src/base/container-utils.h",
+    "src/base/contextual.h",
     "src/base/cpu.cc",
     "src/base/cpu.h",
     "src/base/debug/stack_trace.cc",
@@ -5655,6 +5714,7 @@ v8_component("v8_libbase") {
     "src/base/platform/memory.h",
     "src/base/platform/mutex.cc",
     "src/base/platform/mutex.h",
+    "src/base/platform/platform.cc",
     "src/base/platform/platform.h",
     "src/base/platform/semaphore.cc",
     "src/base/platform/semaphore.h",
@@ -5788,6 +5848,7 @@ v8_component("v8_libbase") {
     sources += [
       "src/base/debug/stack_trace_posix.cc",
       "src/base/platform/platform-darwin.cc",
+      "src/base/platform/platform-ios.cc",
     ]
   } else if (is_win) {
     # TODO(infra): Add support for cygwin.
@@ -6285,11 +6346,12 @@ if (v8_check_header_includes) {
 #
 
 if (v8_monolithic) {
-  # A component build is not monolithic.
-  assert(!is_component_build)
+  assert(!is_component_build,
+         "Set `is_component_build = false` for v8_monolithic.")
 
   # Using external startup data would produce separate files.
-  assert(!v8_use_external_startup_data)
+  assert(!v8_use_external_startup_data,
+         "Set `v8_use_external_startup_data = false` for v8_monolithic.")
   v8_static_library("v8_monolith") {
     deps = [
       ":v8",
@@ -6476,7 +6538,7 @@ if (v8_enable_i18n_support) {
         ":v8_libbase",
         ":v8_shared_internal_headers",
         "//build/win:default_exe_manifest",
-        "//third_party/icu",
+        v8_icu_path,
       ]
 
       configs = [ ":internal_config" ]