Revert to use memcpy instead of base::Memcpy

For Cobalt's purpose in the past, we introduced base::Memcpy to
intercept memcpy calls and replace it with SbMemoryCopy on
Starboard/Cobalt. Recently Cobalt removed SbMemoryCopy because we found
out that memcpy implementation is universal. To reduce the cost to
maintain base::Memcpy, let us remove it and revert back to raw memcpy.

Bug: v8:10927
Change-Id: I060f191f8f1aed8b78ffe4558a3743f3a2da008b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2951462
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: John Xu <johnx@google.com>
Cr-Commit-Position: refs/heads/master@{#75070}

src/api/api.cc

@@ -5375,7 +5375,7 @@ static int WriteUtf8Impl(i::Vector<const Char> string, char* write_start,
       for (int i = read_index; i < up_to; i++) char_mask |= read_start[i];
       if ((char_mask & 0x80) == 0) {
         int copy_length = up_to - read_index;
-        base::Memcpy(current_write, read_start + read_index, copy_length);
+        memcpy(current_write, read_start + read_index, copy_length);
         current_write += copy_length;
         read_index = up_to;
       } else {
@@ -7592,7 +7592,7 @@ void* v8::ArrayBuffer::Allocator::Reallocate(void* data, size_t old_length,
       reinterpret_cast<uint8_t*>(AllocateUninitialized(new_length));
   if (new_data == nullptr) return nullptr;
   size_t bytes_to_copy = std::min(old_length, new_length);
-  base::Memcpy(new_data, data, bytes_to_copy);
+  memcpy(new_data, data, bytes_to_copy);
   if (new_length > bytes_to_copy) {
     memset(new_data + bytes_to_copy, 0, new_length - bytes_to_copy);
   }
@@ -7726,7 +7726,7 @@ size_t v8::ArrayBufferView::CopyContents(void* dest, size_t byte_length) {
                                              isolate);
       source = reinterpret_cast<char*>(typed_array->DataPtr());
     }
-    base::Memcpy(dest, source + byte_offset, bytes_to_copy);
+    memcpy(dest, source + byte_offset, bytes_to_copy);
   }
   return bytes_to_copy;
 }

src/ast/ast-value-factory.cc

@@ -404,7 +404,7 @@ const AstRawString* AstValueFactory::GetString(
         // Copy literal contents for later comparison.
         int length = literal_bytes.length();
         byte* new_literal_bytes = zone()->NewArray<byte>(length);
-        base::Memcpy(new_literal_bytes, literal_bytes.begin(), length);
+        memcpy(new_literal_bytes, literal_bytes.begin(), length);
         AstRawString* new_string = zone()->New<AstRawString>(
             is_one_byte, Vector<const byte>(new_literal_bytes, length),
             raw_hash_field);

src/ast/ast.cc

@@ -259,7 +259,7 @@ std::unique_ptr<char[]> FunctionLiteral::GetDebugName() const {
     }
   }
   std::unique_ptr<char[]> result(new char[result_vec.size() + 1]);
-  base::Memcpy(result.get(), result_vec.data(), result_vec.size());
+  memcpy(result.get(), result_vec.data(), result_vec.size());
   result[result_vec.size()] = '\0';
   return result;
 }

src/base/cpu.cc

@@ -316,7 +316,7 @@ class CPUInfo final {
     size_t len = q - p;
     char* result = new char[len + 1];
     if (result != nullptr) {
-      base::Memcpy(result, p, len);
+      memcpy(result, p, len);
       result[len] = '\0';
     }
     return result;
@@ -448,7 +448,7 @@ CPU::CPU()
       has_non_stop_time_stamp_counter_(false),
       is_running_in_vm_(false),
       has_msa_(false) {
-  base::Memcpy(vendor_, "Unknown", 8);
+  memcpy(vendor_, "Unknown", 8);
 
 #if defined(STARBOARD)
   if (StarboardDetectCPU()) {
@@ -469,7 +469,7 @@ CPU::CPU()
   __cpuid(cpu_info, 0);
   unsigned num_ids = cpu_info[0];
   std::swap(cpu_info[2], cpu_info[3]);
-  base::Memcpy(vendor_, cpu_info + 1, 12);
+  memcpy(vendor_, cpu_info + 1, 12);
   vendor_[12] = '\0';
 
   // Interpret CPU feature information.

src/base/file-utils.cc

@@ -22,8 +22,8 @@ std::unique_ptr<char[]> RelativePath(const char* exec_path, const char* name) {
   }
   size_t name_length = strlen(name);
   auto buffer = std::make_unique<char[]>(basename_start + name_length + 1);
-  if (basename_start > 0) base::Memcpy(buffer.get(), exec_path, basename_start);
-  base::Memcpy(buffer.get() + basename_start, name, name_length);
+  if (basename_start > 0) memcpy(buffer.get(), exec_path, basename_start);
+  memcpy(buffer.get() + basename_start, name, name_length);
   return buffer;
 }
 

src/base/hashmap.h

@@ -198,7 +198,7 @@ TemplateHashMapImpl<Key, Value, MatchFun, AllocationPolicy>::
   impl_.capacity_ = original->capacity();
   impl_.occupancy_ = original->occupancy();
   impl_.map_ = impl_.allocator().template NewArray<Entry>(capacity());
-  base::Memcpy(impl_.map_, original->impl_.map_, capacity() * sizeof(Entry));
+  memcpy(impl_.map_, original->impl_.map_, capacity() * sizeof(Entry));
 }
 
 template <typename Key, typename Value, typename MatchFun,

src/base/macros.h

@@ -105,7 +105,7 @@ V8_INLINE Dest bit_cast(Source const& source) {
   static_assert(sizeof(Dest) == sizeof(Source),
                 "source and dest must be same size");
   Dest dest;
-  v8::base::Memcpy(&dest, &source, sizeof(dest));
+  memcpy(&dest, &source, sizeof(dest));
   return dest;
 }
 

src/base/memory.h

@@ -32,14 +32,14 @@ template <typename V>
 static inline V ReadUnalignedValue(Address p) {
   ASSERT_TRIVIALLY_COPYABLE(V);
   V r;
-  base::Memcpy(&r, reinterpret_cast<void*>(p), sizeof(V));
+  memcpy(&r, reinterpret_cast<void*>(p), sizeof(V));
   return r;
 }
 
 template <typename V>
 static inline void WriteUnalignedValue(Address p, V value) {
   ASSERT_TRIVIALLY_COPYABLE(V);
-  base::Memcpy(reinterpret_cast<void*>(p), &value, sizeof(V));
+  memcpy(reinterpret_cast<void*>(p), &value, sizeof(V));
 }
 
 template <typename V>

src/base/page-allocator.cc

@@ -109,7 +109,7 @@ PageAllocator::AllocateSharedPages(size_t size, const void* original_address) {
   void* ptr =
       base::OS::AllocateShared(size, base::OS::MemoryPermission::kReadWrite);
   CHECK_NOT_NULL(ptr);
-  base::Memcpy(ptr, original_address, size);
+  memcpy(ptr, original_address, size);
   bool success = base::OS::SetPermissions(
       ptr, size, base::OS::MemoryPermission::kReadWrite);
   CHECK(success);

src/base/platform/wrappers.h

@@ -33,10 +33,6 @@ inline void Free(void* memory) { return free(memory); }
 
 inline void* Calloc(size_t count, size_t size) { return calloc(count, size); }
 
-inline void* Memcpy(void* dest, const void* source, size_t count) {
-  return memcpy(dest, source, count);
-}
-
 inline FILE* Fopen(const char* filename, const char* mode) {
   return fopen(filename, mode);
 }
@@ -57,10 +53,6 @@ inline void* Calloc(size_t count, size_t size) {
   return SbMemoryCalloc(count, size);
 }
 
-inline void* Memcpy(void* dest, const void* source, size_t count) {
-  return SbMemoryCopy(dest, source, count);
-}
-
 inline FILE* Fopen(const char* filename, const char* mode) { return NULL; }
 
 inline int Fclose(FILE* stream) { return -1; }

src/base/small-vector.h

@@ -34,7 +34,7 @@ class SmallVector {
   SmallVector(SmallVector&& other) V8_NOEXCEPT { *this = std::move(other); }
   SmallVector(std::initializer_list<T> init) {
     resize_no_init(init.size());
-    base::Memcpy(begin_, init.begin(), sizeof(T) * init.size());
+    memcpy(begin_, init.begin(), sizeof(T) * init.size());
   }
 
   ~SmallVector() {
@@ -50,7 +50,7 @@ class SmallVector {
       begin_ = reinterpret_cast<T*>(base::Malloc(sizeof(T) * other_size));
       end_of_storage_ = begin_ + other_size;
     }
-    base::Memcpy(begin_, other.begin_, sizeof(T) * other_size);
+    memcpy(begin_, other.begin_, sizeof(T) * other_size);
     end_ = begin_ + other_size;
     return *this;
   }
@@ -66,7 +66,7 @@ class SmallVector {
     } else {
       DCHECK_GE(capacity(), other.size());  // Sanity check.
       size_t other_size = other.size();
-      base::Memcpy(begin_, other.begin_, sizeof(T) * other_size);
+      memcpy(begin_, other.begin_, sizeof(T) * other_size);
       end_ = begin_ + other_size;
     }
     return *this;
@@ -161,7 +161,7 @@ class SmallVector {
       // crashes appropriately.
       FATAL("Fatal process out of memory: base::SmallVector::Grow");
     }
-    base::Memcpy(new_storage, begin_, sizeof(T) * in_use);
+    memcpy(new_storage, begin_, sizeof(T) * in_use);
     if (is_big()) base::Free(begin_);
     begin_ = new_storage;
     end_ = new_storage + in_use;

src/builtins/builtins-trace.cc

@@ -42,8 +42,8 @@ class MaybeUtf8 {
         // strings, the bytes we get from SeqOneByteString are not. buf_ is
         // guaranteed to be null terminated.
         DisallowGarbageCollection no_gc;
-        base::Memcpy(
-            buf_, Handle<SeqOneByteString>::cast(string)->GetChars(no_gc), len);
+        memcpy(buf_, Handle<SeqOneByteString>::cast(string)->GetChars(no_gc),
+               len);
       }
     } else {
       Local<v8::String> local = Utils::ToLocal(string);

src/codegen/arm64/assembler-arm64.cc

@@ -582,7 +582,7 @@ void Assembler::bind(Label* label) {
       // Internal references do not get patched to an instruction but directly
       // to an address.
       internal_reference_positions_.push_back(linkoffset);
-      base::Memcpy(link, &pc_, kSystemPointerSize);
+      memcpy(link, &pc_, kSystemPointerSize);
     } else {
       link->SetImmPCOffsetTarget(options(),
                                  reinterpret_cast<Instruction*>(pc_));

src/codegen/arm64/assembler-arm64.h

@@ -2616,7 +2616,7 @@ class V8_EXPORT_PRIVATE Assembler : public AssemblerBase {
     STATIC_ASSERT(sizeof(instruction) == kInstrSize);
     DCHECK_LE(pc_ + sizeof(instruction), buffer_start_ + buffer_->size());
 
-    base::Memcpy(pc_, &instruction, sizeof(instruction));
+    memcpy(pc_, &instruction, sizeof(instruction));
     pc_ += sizeof(instruction);
     CheckBuffer();
   }
@@ -2628,7 +2628,7 @@ class V8_EXPORT_PRIVATE Assembler : public AssemblerBase {
 
     // TODO(all): Somehow register we have some data here. Then we can
     // disassemble it correctly.
-    base::Memcpy(pc_, data, size);
+    memcpy(pc_, data, size);
     pc_ += size;
     CheckBuffer();
   }

src/codegen/arm64/macro-assembler-arm64.cc

@@ -393,7 +393,7 @@ void TurboAssembler::Movi32bitHelper(const VRegister& vd, uint64_t imm) {
   DCHECK(is_uint32(imm));
 
   uint8_t bytes[sizeof(imm)];
-  base::Memcpy(bytes, &imm, sizeof(imm));
+  memcpy(bytes, &imm, sizeof(imm));
 
   // All bytes are either 0x00 or 0xFF.
   {

src/codegen/external-reference.cc

@@ -786,7 +786,7 @@ void* libc_memchr(void* string, int character, size_t search_length) {
 FUNCTION_REFERENCE(libc_memchr_function, libc_memchr)
 
 void* libc_memcpy(void* dest, const void* src, size_t n) {
-  return base::Memcpy(dest, src, n);
+  return memcpy(dest, src, n);
 }
 
 FUNCTION_REFERENCE(libc_memcpy_function, libc_memcpy)

src/codegen/optimized-compilation-info.cc

@@ -168,7 +168,7 @@ std::unique_ptr<char[]> OptimizedCompilationInfo::GetDebugName() const {
   Vector<const char> name_vec = debug_name_;
   if (name_vec.empty()) name_vec = ArrayVector("unknown");
   std::unique_ptr<char[]> name(new char[name_vec.length() + 1]);
-  base::Memcpy(name.get(), name_vec.begin(), name_vec.length());
+  memcpy(name.get(), name_vec.begin(), name_vec.length());
   name[name_vec.length()] = '\0';
   return name;
 }

src/codegen/x64/assembler-x64.cc

@@ -2034,7 +2034,7 @@ void Assembler::Nop(int n) {
     EnsureSpace ensure_space(this);
     int nop_bytes = std::min(n, 9);
     const char* sequence = kNopSequences + kNopOffsets[nop_bytes];
-    base::Memcpy(pc_, sequence, nop_bytes);
+    memcpy(pc_, sequence, nop_bytes);
     pc_ += nop_bytes;
     n -= nop_bytes;
   } while (n);

src/compiler/backend/arm/instruction-selector-arm.cc

@@ -2705,7 +2705,7 @@ void InstructionSelector::VisitI32x4DotI16x8S(Node* node) {
 void InstructionSelector::VisitS128Const(Node* node) {
   ArmOperandGenerator g(this);
   uint32_t val[kSimd128Size / sizeof(uint32_t)];
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros, avoid emitting code for generic constants.
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   bool all_ones = val[0] == UINT32_MAX && val[1] == UINT32_MAX &&

src/compiler/backend/arm64/instruction-selector-arm64.cc

@@ -3563,7 +3563,7 @@ void InstructionSelector::VisitS128Const(Node* node) {
   static const int kUint32Immediates = 4;
   uint32_t val[kUint32Immediates];
   STATIC_ASSERT(sizeof(val) == kSimd128Size);
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros, avoid emitting code for generic constants
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   InstructionOperand dst = g.DefineAsRegister(node);

src/compiler/backend/ia32/instruction-selector-ia32.cc

@@ -2332,7 +2332,7 @@ void InstructionSelector::VisitS128Const(Node* node) {
   IA32OperandGenerator g(this);
   static const int kUint32Immediates = kSimd128Size / sizeof(uint32_t);
   uint32_t val[kUint32Immediates];
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros or ones, avoid emitting code for generic constants
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   bool all_ones = val[0] == UINT32_MAX && val[1] == UINT32_MAX &&

src/compiler/backend/instruction-selector.cc

@@ -3366,8 +3366,7 @@ FrameStateDescriptor* InstructionSelector::GetFrameStateDescriptor(
 void InstructionSelector::CanonicalizeShuffle(Node* node, uint8_t* shuffle,
                                               bool* is_swizzle) {
   // Get raw shuffle indices.
-  base::Memcpy(shuffle, S128ImmediateParameterOf(node->op()).data(),
-               kSimd128Size);
+  memcpy(shuffle, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   bool needs_swap;
   bool inputs_equal = GetVirtualRegister(node->InputAt(0)) ==
                       GetVirtualRegister(node->InputAt(1));

src/compiler/backend/mips64/instruction-selector-mips64.cc

@@ -3021,7 +3021,7 @@ void InstructionSelector::VisitS128Const(Node* node) {
   Mips64OperandGenerator g(this);
   static const int kUint32Immediates = kSimd128Size / sizeof(uint32_t);
   uint32_t val[kUint32Immediates];
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros or ones, avoid emitting code for generic constants
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   bool all_ones = val[0] == UINT32_MAX && val[1] == UINT32_MAX &&

src/compiler/backend/ppc/instruction-selector-ppc.cc

@@ -2507,7 +2507,7 @@ static int32_t Pack4Lanes(const uint8_t* shuffle) {
 void InstructionSelector::VisitS128Const(Node* node) {
   PPCOperandGenerator g(this);
   uint32_t val[kSimd128Size / sizeof(uint32_t)];
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros, avoid emitting code for generic constants.
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   bool all_ones = val[0] == UINT32_MAX && val[1] == UINT32_MAX &&

src/compiler/backend/s390/instruction-selector-s390.cc

@@ -2763,7 +2763,7 @@ static int32_t Pack4Lanes(const uint8_t* shuffle) {
 void InstructionSelector::VisitS128Const(Node* node) {
   S390OperandGenerator g(this);
   uint32_t val[kSimd128Size / sizeof(uint32_t)];
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros, avoid emitting code for generic constants.
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   bool all_ones = val[0] == UINT32_MAX && val[1] == UINT32_MAX &&

src/compiler/backend/x64/instruction-selector-x64.cc

@@ -3022,7 +3022,7 @@ void InstructionSelector::VisitS128Const(Node* node) {
   X64OperandGenerator g(this);
   static const int kUint32Immediates = kSimd128Size / sizeof(uint32_t);
   uint32_t val[kUint32Immediates];
-  base::Memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
+  memcpy(val, S128ImmediateParameterOf(node->op()).data(), kSimd128Size);
   // If all bytes are zeros or ones, avoid emitting code for generic constants
   bool all_zeros = !(val[0] || val[1] || val[2] || val[3]);
   bool all_ones = val[0] == UINT32_MAX && val[1] == UINT32_MAX &&

src/compiler/bytecode-graph-builder.cc

@@ -4402,8 +4402,7 @@ Node* BytecodeGraphBuilder::MakeNode(const Operator* op, int value_input_count,
     if (has_effect) ++input_count_with_deps;
     Node** buffer = EnsureInputBufferSize(input_count_with_deps);
     if (value_input_count > 0) {
-      base::Memcpy(buffer, value_inputs,
-                   kSystemPointerSize * value_input_count);
+      memcpy(buffer, value_inputs, kSystemPointerSize * value_input_count);
     }
     Node** current_input = buffer + value_input_count;
     if (has_context) {

src/compiler/graph-visualizer.cc

@@ -257,7 +257,7 @@ std::unique_ptr<char[]> GetVisualizerLogFileName(OptimizedCompilationInfo* info,
   }
 
   char* buffer = new char[full_filename.length() + 1];
-  base::Memcpy(buffer, full_filename.begin(), full_filename.length());
+  memcpy(buffer, full_filename.begin(), full_filename.length());
   buffer[full_filename.length()] = '\0';
   return std::unique_ptr<char[]>(buffer);
 }

src/compiler/wasm-compiler.cc

@@ -1433,7 +1433,7 @@ Node* WasmGraphBuilder::Return(Vector<Node*> vals) {
 
   buf[0] = Int32Constant(0);
   if (count > 0) {
-    base::Memcpy(buf.data() + 1, vals.begin(), sizeof(void*) * count);
+    memcpy(buf.data() + 1, vals.begin(), sizeof(void*) * count);
   }
   buf[count + 1] = effect();
   buf[count + 2] = control();
@@ -2872,7 +2872,7 @@ Node* WasmGraphBuilder::BuildCallNode(const wasm::FunctionSig* sig,
   // Make room for the instance_node parameter at index 1, just after code.
   inputs[0] = args[0];  // code
   inputs[1] = instance_node;
-  if (params > 0) base::Memcpy(&inputs[2], &args[1], params * sizeof(Node*));
+  if (params > 0) memcpy(&inputs[2], &args[1], params * sizeof(Node*));
 
   // Add effect and control inputs.
   if (has_frame_state != 0) inputs[params + 2] = frame_state;
@@ -7669,7 +7669,7 @@ MaybeHandle<Code> CompileWasmToJSWrapper(Isolate* isolate,
   constexpr size_t kMaxNameLen = 128;
   constexpr size_t kNamePrefixLen = 11;
   auto name_buffer = std::unique_ptr<char[]>(new char[kMaxNameLen]);
-  base::Memcpy(name_buffer.get(), "wasm-to-js:", kNamePrefixLen);
+  memcpy(name_buffer.get(), "wasm-to-js:", kNamePrefixLen);
   PrintSignature(VectorOf(name_buffer.get(), kMaxNameLen) + kNamePrefixLen,
                  sig);
 
@@ -7721,7 +7721,7 @@ MaybeHandle<Code> CompileJSToJSWrapper(Isolate* isolate,
   constexpr size_t kMaxNameLen = 128;
   constexpr size_t kNamePrefixLen = 9;
   auto name_buffer = std::unique_ptr<char[]>(new char[kMaxNameLen]);
-  base::Memcpy(name_buffer.get(), "js-to-js:", kNamePrefixLen);
+  memcpy(name_buffer.get(), "js-to-js:", kNamePrefixLen);
   PrintSignature(VectorOf(name_buffer.get(), kMaxNameLen) + kNamePrefixLen,
                  sig);
 
@@ -7776,7 +7776,7 @@ Handle<Code> CompileCWasmEntry(Isolate* isolate, const wasm::FunctionSig* sig,
   constexpr size_t kMaxNameLen = 128;
   constexpr size_t kNamePrefixLen = 13;
   auto name_buffer = std::unique_ptr<char[]>(new char[kMaxNameLen]);
-  base::Memcpy(name_buffer.get(), "c-wasm-entry:", kNamePrefixLen);
+  memcpy(name_buffer.get(), "c-wasm-entry:", kNamePrefixLen);
   PrintSignature(VectorOf(name_buffer.get(), kMaxNameLen) + kNamePrefixLen,
                  sig);
 
@@ -7839,7 +7839,7 @@ Vector<const char> GetDebugName(Zone* zone, int index) {
   DCHECK(name_len > 0 && name_len < name_vector.length());
 
   char* index_name = zone->NewArray<char>(name_len);
-  base::Memcpy(index_name, name_vector.begin(), name_len);
+  memcpy(index_name, name_vector.begin(), name_len);
   return Vector<const char>(index_name, name_len);
 }
 

src/d8/d8-posix.cc

@@ -318,7 +318,7 @@ static Local<Value> GetStdout(Isolate* isolate, int child_fd,
               .ToLocalChecked();
       accumulator = String::Concat(isolate, accumulator, addition);
       fullness = bytes_read + fullness - length;
-      base::Memcpy(buffer, buffer + length, fullness);
+      memcpy(buffer, buffer + length, fullness);
     }
   } while (bytes_read != 0);
   return accumulator;

src/d8/d8.cc

@@ -485,7 +485,7 @@ ScriptCompiler::CachedData* Shell::LookupCodeCache(Isolate* isolate,
   if (entry != cached_code_map_.end() && entry->second) {
     int length = entry->second->length;
     uint8_t* cache = new uint8_t[length];
-    base::Memcpy(cache, entry->second->data, length);
+    memcpy(cache, entry->second->data, length);
     ScriptCompiler::CachedData* cached_data = new ScriptCompiler::CachedData(
         cache, length, ScriptCompiler::CachedData::BufferOwned);
     return cached_data;
@@ -502,7 +502,7 @@ void Shell::StoreInCodeCache(Isolate* isolate, Local<Value> source,
   DCHECK(*key);
   int length = cache_data->length;
   uint8_t* cache = new uint8_t[length];
-  base::Memcpy(cache, cache_data->data, length);
+  memcpy(cache, cache_data->data, length);
   cached_code_map_[*key] = std::unique_ptr<ScriptCompiler::CachedData>(
       new ScriptCompiler::CachedData(cache, length,
                                      ScriptCompiler::CachedData::BufferOwned));

src/debug/wasm/gdb-server/transport.cc

@@ -119,7 +119,7 @@ Transport::~Transport() {
 
 void Transport::CopyFromBuffer(char** dst, int32_t* len) {
   int32_t copy_bytes = std::min(*len, size_ - pos_);
-  base::Memcpy(*dst, buf_.get() + pos_, copy_bytes);
+  memcpy(*dst, buf_.get() + pos_, copy_bytes);
   pos_ += copy_bytes;
   *len -= copy_bytes;
   *dst += copy_bytes;

src/debug/wasm/gdb-server/wasm-module-debug.cc

@@ -295,11 +295,11 @@ uint32_t WasmModuleDebug::GetWasmMemory(Isolate* isolate, uint32_t offset,
     uint8_t* mem_start = instance->memory_start();
     size_t mem_size = instance->memory_size();
     if (static_cast<uint64_t>(offset) + size <= mem_size) {
-      base::Memcpy(buffer, mem_start + offset, size);
+      memcpy(buffer, mem_start + offset, size);
       bytes_read = size;
     } else if (offset < mem_size) {
       bytes_read = static_cast<uint32_t>(mem_size) - offset;
-      base::Memcpy(buffer, mem_start + offset, bytes_read);
+      memcpy(buffer, mem_start + offset, bytes_read);
     }
   }
   return bytes_read;
@@ -347,7 +347,7 @@ uint32_t WasmModuleDebug::GetWasmModuleBytes(wasm_addr_t wasm_addr,
     if (offset < wire_bytes.length()) {
       uint32_t module_size = static_cast<uint32_t>(wire_bytes.length());
       bytes_read = module_size - offset >= size ? size : module_size - offset;
-      base::Memcpy(buffer, wire_bytes.start() + offset, bytes_read);
+      memcpy(buffer, wire_bytes.start() + offset, bytes_read);
     }
   }
   return bytes_read;
@@ -380,7 +380,7 @@ bool StoreValue(const T& value, uint8_t* buffer, uint32_t buffer_size,
                 uint32_t* size) {
   *size = sizeof(value);
   if (*size > buffer_size) return false;
-  base::Memcpy(buffer, &value, *size);
+  memcpy(buffer, &value, *size);
   return true;
 }
 

src/diagnostics/gdb-jit.cc

@@ -629,7 +629,7 @@ class ELF {
 #else
 #error Unsupported target architecture.
 #endif
-    base::Memcpy(header->ident, ident, 16);
+    memcpy(header->ident, ident, 16);
     header->type = 1;
 #if V8_TARGET_ARCH_IA32
     header->machine = 3;

src/diagnostics/unwinding-info-win64.cc

@@ -171,7 +171,7 @@ void InitUnwindingRecord(Record* record, size_t code_size_in_bytes) {
   masm.movq(rax, reinterpret_cast<uint64_t>(&CRASH_HANDLER_FUNCTION_NAME));
   masm.jmp(rax);
   DCHECK_LE(masm.instruction_size(), sizeof(record->exception_thunk));
-  base::Memcpy(&record->exception_thunk[0], masm.buffer_start(),
+  memcpy(&record->exception_thunk[0], masm.buffer_start(),
          masm.instruction_size());
 }
 
@@ -449,7 +449,7 @@ void InitUnwindingRecord(Record* record, size_t code_size_in_bytes) {
            Operand(reinterpret_cast<uint64_t>(&CRASH_HANDLER_FUNCTION_NAME)));
   masm.Br(x16);
   DCHECK_LE(masm.instruction_size(), sizeof(record->exception_thunk));
-  base::Memcpy(&record->exception_thunk[0], masm.buffer_start(),
+  memcpy(&record->exception_thunk[0], masm.buffer_start(),
          masm.instruction_size());
 }
 

src/execution/arm/simulator-arm.cc

@@ -673,7 +673,7 @@ void Simulator::CheckICache(base::CustomMatcherHashMap* i_cache,
                        cache_page->CachedData(offset), kInstrSize));
   } else {
     // Cache miss.  Load memory into the cache.
-    base::Memcpy(cached_line, line, CachePage::kLineLength);
+    memcpy(cached_line, line, CachePage::kLineLength);
     *cache_valid_byte = CachePage::LINE_VALID;
   }
 }
@@ -778,14 +778,14 @@ double Simulator::get_double_from_register_pair(int reg) {
   // Read the bits from the unsigned integer register_[] array
   // into the double precision floating point value and return it.
   char buffer[2 * sizeof(vfp_registers_[0])];
-  base::Memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
-  base::Memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
+  memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
+  memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
   return (dm_val);
 }
 
 void Simulator::set_register_pair_from_double(int reg, double* value) {
   DCHECK((reg >= 0) && (reg < num_registers) && ((reg % 2) == 0));
-  base::Memcpy(registers_ + reg, value, sizeof(*value));
+  memcpy(registers_ + reg, value, sizeof(*value));
 }
 
 void Simulator::set_dw_register(int dreg, const int* dbl) {
@@ -796,22 +796,22 @@ void Simulator::set_dw_register(int dreg, const int* dbl) {
 
 void Simulator::get_d_register(int dreg, uint64_t* value) {
   DCHECK((dreg >= 0) && (dreg < DwVfpRegister::SupportedRegisterCount()));
-  base::Memcpy(value, vfp_registers_ + dreg * 2, sizeof(*value));
+  memcpy(value, vfp_registers_ + dreg * 2, sizeof(*value));
 }
 
 void Simulator::set_d_register(int dreg, const uint64_t* value) {
   DCHECK((dreg >= 0) && (dreg < DwVfpRegister::SupportedRegisterCount()));
-  base::Memcpy(vfp_registers_ + dreg * 2, value, sizeof(*value));
+  memcpy(vfp_registers_ + dreg * 2, value, sizeof(*value));
 }
 
 void Simulator::get_d_register(int dreg, uint32_t* value) {
   DCHECK((dreg >= 0) && (dreg < DwVfpRegister::SupportedRegisterCount()));
-  base::Memcpy(value, vfp_registers_ + dreg * 2, sizeof(*value) * 2);
+  memcpy(value, vfp_registers_ + dreg * 2, sizeof(*value) * 2);
 }
 
 void Simulator::set_d_register(int dreg, const uint32_t* value) {
   DCHECK((dreg >= 0) && (dreg < DwVfpRegister::SupportedRegisterCount()));
-  base::Memcpy(vfp_registers_ + dreg * 2, value, sizeof(*value) * 2);
+  memcpy(vfp_registers_ + dreg * 2, value, sizeof(*value) * 2);
 }
 
 template <typename T, int SIZE>
@@ -819,7 +819,7 @@ void Simulator::get_neon_register(int reg, T (&value)[SIZE / sizeof(T)]) {
   DCHECK(SIZE == kSimd128Size || SIZE == kDoubleSize);
   DCHECK_LE(0, reg);
   DCHECK_GT(SIZE == kSimd128Size ? num_q_registers : num_d_registers, reg);
-  base::Memcpy(value, vfp_registers_ + reg * (SIZE / 4), SIZE);
+  memcpy(value, vfp_registers_ + reg * (SIZE / 4), SIZE);
 }
 
 template <typename T, int SIZE>
@@ -827,7 +827,7 @@ void Simulator::set_neon_register(int reg, const T (&value)[SIZE / sizeof(T)]) {
   DCHECK(SIZE == kSimd128Size || SIZE == kDoubleSize);
   DCHECK_LE(0, reg);
   DCHECK_GT(SIZE == kSimd128Size ? num_q_registers : num_d_registers, reg);
-  base::Memcpy(vfp_registers_ + reg * (SIZE / 4), value, SIZE);
+  memcpy(vfp_registers_ + reg * (SIZE / 4), value, SIZE);
 }
 
 // Raw access to the PC register.
@@ -863,7 +863,7 @@ void Simulator::SetVFPRegister(int reg_index, const InputType& value) {
   if (register_size == 2)
     DCHECK(reg_index < DwVfpRegister::SupportedRegisterCount());
 
-  base::Memcpy(&vfp_registers_[reg_index * register_size], &value, bytes);
+  memcpy(&vfp_registers_[reg_index * register_size], &value, bytes);
 }
 
 template <class ReturnType, int register_size>
@@ -876,7 +876,7 @@ ReturnType Simulator::GetFromVFPRegister(int reg_index) {
     DCHECK(reg_index < DwVfpRegister::SupportedRegisterCount());
 
   ReturnType value;
-  base::Memcpy(&value, &vfp_registers_[register_size * reg_index], bytes);
+  memcpy(&value, &vfp_registers_[register_size * reg_index], bytes);
   return value;
 }
 
@@ -930,14 +930,14 @@ void Simulator::GetFpArgs(double* x, double* y, int32_t* z) {
 void Simulator::SetFpResult(const double& result) {
   if (use_eabi_hardfloat()) {
     char buffer[2 * sizeof(vfp_registers_[0])];
-    base::Memcpy(buffer, &result, sizeof(buffer));
+    memcpy(buffer, &result, sizeof(buffer));
     // Copy result to d0.
-    base::Memcpy(vfp_registers_, buffer, sizeof(buffer));
+    memcpy(vfp_registers_, buffer, sizeof(buffer));
   } else {
     char buffer[2 * sizeof(registers_[0])];
-    base::Memcpy(buffer, &result, sizeof(buffer));
+    memcpy(buffer, &result, sizeof(buffer));
     // Copy result to r0 and r1.
-    base::Memcpy(registers_, buffer, sizeof(buffer));
+    memcpy(registers_, buffer, sizeof(buffer));
   }
 }
 
@@ -3457,7 +3457,7 @@ void Simulator::DecodeTypeVFP(Instruction* instr) {
         // NeonS32 / NeonU32
         DCHECK_EQ(0, instr->Bit(23));
         int32_t int_data[2];
-        base::Memcpy(int_data, &data, sizeof(int_data));
+        memcpy(int_data, &data, sizeof(int_data));
         set_register(rt, int_data[instr->Bit(21)]);
       } else {
         uint64_t data;
@@ -4098,7 +4098,7 @@ void VmovImmediate(Simulator* simulator, Instruction* instr) {
       // Set all bytes of register.
       std::fill_n(imms, kSimd128Size, imm);
       uint64_t imm64;
-      base::Memcpy(&imm64, imms, 8);
+      memcpy(&imm64, imms, 8);
       for (int r = 0; r < regs; r++) {
         simulator->set_d_register(vd + r, &imm64);
       }
@@ -4314,9 +4314,9 @@ void MultiplyLong(Simulator* simulator, int Vd, int Vn, int Vm) {
   // underlying datatype easily.
   uint64_t tmp;
   simulator->get_d_register(Vn, &tmp);
-  base::Memcpy(src1, &tmp, sizeof(tmp));
+  memcpy(src1, &tmp, sizeof(tmp));
   simulator->get_d_register(Vm, &tmp);
-  base::Memcpy(src2, &tmp, sizeof(tmp));
+  memcpy(src2, &tmp, sizeof(tmp));
 
   for (int i = 0; i < kElems; i++) {
     dst[i] = WideType{src1[i]} * WideType{src2[i]};
@@ -6279,8 +6279,7 @@ intptr_t Simulator::CallImpl(Address entry, int argument_count,
     entry_stack &= -base::OS::ActivationFrameAlignment();
   }
   // Store remaining arguments on stack, from low to high memory.
-  base::Memcpy(reinterpret_cast<intptr_t*>(entry_stack),
-               arguments + reg_arg_count,
+  memcpy(reinterpret_cast<intptr_t*>(entry_stack), arguments + reg_arg_count,
          (argument_count - reg_arg_count) * sizeof(*arguments));
   set_register(sp, entry_stack);
 

src/execution/arm64/simulator-arm64.cc

@@ -145,7 +145,7 @@ void Simulator::CallImpl(Address entry, CallArgument* args) {
   char* stack = reinterpret_cast<char*>(entry_stack);
   std::vector<int64_t>::const_iterator it;
   for (it = stack_args.begin(); it != stack_args.end(); it++) {
-    base::Memcpy(stack, &(*it), sizeof(*it));
+    memcpy(stack, &(*it), sizeof(*it));
     stack += sizeof(*it);
   }
 
@@ -268,9 +268,9 @@ uintptr_t Simulator::PushAddress(uintptr_t address) {
   DCHECK(sizeof(uintptr_t) < 2 * kXRegSize);
   intptr_t new_sp = sp() - 2 * kXRegSize;
   uintptr_t* alignment_slot = reinterpret_cast<uintptr_t*>(new_sp + kXRegSize);
-  base::Memcpy(alignment_slot, &kSlotsZapValue, kSystemPointerSize);
+  memcpy(alignment_slot, &kSlotsZapValue, kSystemPointerSize);
   uintptr_t* stack_slot = reinterpret_cast<uintptr_t*>(new_sp);
-  base::Memcpy(stack_slot, &address, kSystemPointerSize);
+  memcpy(stack_slot, &address, kSystemPointerSize);
   set_sp(new_sp);
   return new_sp;
 }
@@ -3628,9 +3628,8 @@ void Simulator::VisitException(Instruction* instr) {
         uint32_t code;
         uint32_t parameters;
 
-        base::Memcpy(&code, pc_->InstructionAtOffset(kDebugCodeOffset),
-                     sizeof(code));
-        base::Memcpy(&parameters, pc_->InstructionAtOffset(kDebugParamsOffset),
+        memcpy(&code, pc_->InstructionAtOffset(kDebugCodeOffset), sizeof(code));
+        memcpy(&parameters, pc_->InstructionAtOffset(kDebugParamsOffset),
                sizeof(parameters));
         char const* message = reinterpret_cast<char const*>(
             pc_->InstructionAtOffset(kDebugMessageOffset));
@@ -5850,8 +5849,8 @@ void Simulator::DoPrintf(Instruction* instr) {
   uint32_t arg_count;
   uint32_t arg_pattern_list;
   STATIC_ASSERT(sizeof(*instr) == 1);
-  base::Memcpy(&arg_count, instr + kPrintfArgCountOffset, sizeof(arg_count));
-  base::Memcpy(&arg_pattern_list, instr + kPrintfArgPatternListOffset,
+  memcpy(&arg_count, instr + kPrintfArgCountOffset, sizeof(arg_count));
+  memcpy(&arg_pattern_list, instr + kPrintfArgPatternListOffset,
          sizeof(arg_pattern_list));
 
   DCHECK_LE(arg_count, kPrintfMaxArgCount);

src/execution/arm64/simulator-arm64.h

@@ -251,7 +251,7 @@ class SimMemory {
     DCHECK((sizeof(value) == 1) || (sizeof(value) == 2) ||
            (sizeof(value) == 4) || (sizeof(value) == 8) ||
            (sizeof(value) == 16));
-    base::Memcpy(&value, reinterpret_cast<const char*>(address), sizeof(value));
+    memcpy(&value, reinterpret_cast<const char*>(address), sizeof(value));
     return value;
   }
 
@@ -261,7 +261,7 @@ class SimMemory {
     DCHECK((sizeof(value) == 1) || (sizeof(value) == 2) ||
            (sizeof(value) == 4) || (sizeof(value) == 8) ||
            (sizeof(value) == 16));
-    base::Memcpy(reinterpret_cast<char*>(address), &value, sizeof(value));
+    memcpy(reinterpret_cast<char*>(address), &value, sizeof(value));
   }
 };
 
@@ -327,7 +327,7 @@ class SimRegisterBase {
       // All AArch64 registers are zero-extending.
       memset(value_ + sizeof(new_value), 0, kSizeInBytes - sizeof(new_value));
     }
-    base::Memcpy(&value_, &new_value, sizeof(T));
+    memcpy(&value_, &new_value, sizeof(T));
     NotifyRegisterWrite();
   }
 
@@ -340,8 +340,7 @@ class SimRegisterBase {
     DCHECK_GE(lane, 0);
     DCHECK_LE(sizeof(new_value) + (lane * sizeof(new_value)),
               static_cast<unsigned>(kSizeInBytes));
-    base::Memcpy(&value_[lane * sizeof(new_value)], &new_value,
-                 sizeof(new_value));
+    memcpy(&value_[lane * sizeof(new_value)], &new_value, sizeof(new_value));
     NotifyRegisterWrite();
   }
 
@@ -351,7 +350,7 @@ class SimRegisterBase {
     DCHECK_GE(lane, 0);
     DCHECK_LE(sizeof(result) + (lane * sizeof(result)),
               static_cast<unsigned>(kSizeInBytes));
-    base::Memcpy(&result, &value_[lane * sizeof(result)], sizeof(result));
+    memcpy(&result, &value_[lane * sizeof(result)], sizeof(result));
     return result;
   }
 
@@ -439,7 +438,7 @@ class LogicVRegister {
   int64_t IntLeftJustified(VectorFormat vform, int index) const {
     uint64_t value = UintLeftJustified(vform, index);
     int64_t result;
-    base::Memcpy(&result, &value, sizeof(result));
+    memcpy(&result, &value, sizeof(result));
     return result;
   }
 
@@ -675,13 +674,13 @@ class Simulator : public DecoderVisitor, public SimulatorBase {
     explicit CallArgument(T argument) {
       bits_ = 0;
       DCHECK(sizeof(argument) <= sizeof(bits_));
-      base::Memcpy(&bits_, &argument, sizeof(argument));
+      memcpy(&bits_, &argument, sizeof(argument));
       type_ = X_ARG;
     }
 
     explicit CallArgument(double argument) {
       DCHECK(sizeof(argument) == sizeof(bits_));
-      base::Memcpy(&bits_, &argument, sizeof(argument));
+      memcpy(&bits_, &argument, sizeof(argument));
       type_ = D_ARG;
     }
 
@@ -692,10 +691,10 @@ class Simulator : public DecoderVisitor, public SimulatorBase {
       // Make the D register a NaN to try to trap errors if the callee expects a
       // double. If it expects a float, the callee should ignore the top word.
       DCHECK(sizeof(kFP64SignallingNaN) == sizeof(bits_));
-      base::Memcpy(&bits_, &kFP64SignallingNaN, sizeof(kFP64SignallingNaN));
+      memcpy(&bits_, &kFP64SignallingNaN, sizeof(kFP64SignallingNaN));
       // Write the float payload to the S register.
       DCHECK(sizeof(argument) <= sizeof(bits_));
-      base::Memcpy(&bits_, &argument, sizeof(argument));
+      memcpy(&bits_, &argument, sizeof(argument));
       type_ = D_ARG;
     }
 
@@ -763,7 +762,7 @@ class Simulator : public DecoderVisitor, public SimulatorBase {
   template <typename T>
   void set_pc(T new_pc) {
     DCHECK(sizeof(T) == sizeof(pc_));
-    base::Memcpy(&pc_, &new_pc, sizeof(T));
+    memcpy(&pc_, &new_pc, sizeof(T));
     pc_modified_ = true;
   }
   Instruction* pc() { return pc_; }
@@ -1055,7 +1054,7 @@ class Simulator : public DecoderVisitor, public SimulatorBase {
     static_assert(sizeof(result) <= sizeof(raw),
                   "Template type must be <= 64 bits.");
     // Copy the result and truncate to fit. This assumes a little-endian host.
-    base::Memcpy(&result, &raw, sizeof(result));
+    memcpy(&result, &raw, sizeof(result));
     return result;
   }
 
@@ -1510,7 +1509,7 @@ class Simulator : public DecoderVisitor, public SimulatorBase {
     STATIC_ASSERT((sizeof(value) == 1) || (sizeof(value) == 2) ||
                   (sizeof(value) == 4) || (sizeof(value) == 8) ||
                   (sizeof(value) == 16));
-    base::Memcpy(&value, reinterpret_cast<const void*>(address), sizeof(value));
+    memcpy(&value, reinterpret_cast<const void*>(address), sizeof(value));
     return value;
   }
 
@@ -1520,7 +1519,7 @@ class Simulator : public DecoderVisitor, public SimulatorBase {
     STATIC_ASSERT((sizeof(value) == 1) || (sizeof(value) == 2) ||
                   (sizeof(value) == 4) || (sizeof(value) == 8) ||
                   (sizeof(value) == 16));
-    base::Memcpy(reinterpret_cast<void*>(address), &value, sizeof(value));
+    memcpy(reinterpret_cast<void*>(address), &value, sizeof(value));
   }
 
   template <typename T>

src/execution/frames.cc

@@ -1869,7 +1869,7 @@ void WasmFrame::Print(StringStream* accumulator, PrintMode mode,
   const int kMaxPrintedFunctionName = 64;
   char func_name[kMaxPrintedFunctionName + 1];
   int func_name_len = std::min(kMaxPrintedFunctionName, raw_func_name.length());
-  base::Memcpy(func_name, raw_func_name.begin(), func_name_len);
+  memcpy(func_name, raw_func_name.begin(), func_name_len);
   func_name[func_name_len] = '\0';
   int pos = position();
   const wasm::WasmModule* module = wasm_instance().module_object().module();

src/execution/mips/simulator-mips.cc

@@ -850,7 +850,7 @@ void Simulator::CheckICache(base::CustomMatcherHashMap* i_cache,
                        cache_page->CachedData(offset), kInstrSize));
   } else {
     // Cache miss.  Load memory into the cache.
-    base::Memcpy(cached_line, line, CachePage::kLineLength);
+    memcpy(cached_line, line, CachePage::kLineLength);
     *cache_valid_byte = CachePage::LINE_VALID;
   }
 }
@@ -990,8 +990,8 @@ double Simulator::get_double_from_register_pair(int reg) {
   // Read the bits from the unsigned integer register_[] array
   // into the double precision floating point value and return it.
   char buffer[2 * sizeof(registers_[0])];
-  base::Memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
-  base::Memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
+  memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
+  memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
   return (dm_val);
 }
 
@@ -1044,13 +1044,13 @@ double Simulator::get_fpu_register_double(int fpureg) const {
 template <typename T>
 void Simulator::get_msa_register(int wreg, T* value) {
   DCHECK((wreg >= 0) && (wreg < kNumMSARegisters));
-  base::Memcpy(value, FPUregisters_ + wreg * 2, kSimd128Size);
+  memcpy(value, FPUregisters_ + wreg * 2, kSimd128Size);
 }
 
 template <typename T>
 void Simulator::set_msa_register(int wreg, const T* value) {
   DCHECK((wreg >= 0) && (wreg < kNumMSARegisters));
-  base::Memcpy(FPUregisters_ + wreg * 2, value, kSimd128Size);
+  memcpy(FPUregisters_ + wreg * 2, value, kSimd128Size);
 }
 
 // Runtime FP routines take up to two double arguments and zero
@@ -1071,14 +1071,14 @@ void Simulator::GetFpArgs(double* x, double* y, int32_t* z) {
     // Registers a0 and a1 -> x.
     reg_buffer[0] = get_register(a0);
     reg_buffer[1] = get_register(a1);
-    base::Memcpy(x, buffer, sizeof(buffer));
+    memcpy(x, buffer, sizeof(buffer));
     // Registers a2 and a3 -> y.
     reg_buffer[0] = get_register(a2);
     reg_buffer[1] = get_register(a3);
-    base::Memcpy(y, buffer, sizeof(buffer));
+    memcpy(y, buffer, sizeof(buffer));
     // Register 2 -> z.
     reg_buffer[0] = get_register(a2);
-    base::Memcpy(z, buffer, sizeof(*z));
+    memcpy(z, buffer, sizeof(*z));
   }
 }
 
@@ -1089,7 +1089,7 @@ void Simulator::SetFpResult(const double& result) {
   } else {
     char buffer[2 * sizeof(registers_[0])];
     int32_t* reg_buffer = reinterpret_cast<int32_t*>(buffer);
-    base::Memcpy(buffer, &result, sizeof(buffer));
+    memcpy(buffer, &result, sizeof(buffer));
     // Copy result to v0 and v1.
     set_register(v0, reg_buffer[0]);
     set_register(v1, reg_buffer[1]);
@@ -1688,7 +1688,7 @@ void Simulator::TraceMSARegWr(T* value, TraceType t) {
       float f[4];
       double df[2];
     } v;
-    base::Memcpy(v.b, value, kSimd128Size);
+    memcpy(v.b, value, kSimd128Size);
     switch (t) {
       case BYTE:
         SNPrintF(trace_buf_,
@@ -1741,7 +1741,7 @@ void Simulator::TraceMSARegWr(T* value) {
       float f[kMSALanesWord];
       double df[kMSALanesDword];
     } v;
-    base::Memcpy(v.b, value, kMSALanesByte);
+    memcpy(v.b, value, kMSALanesByte);
 
     if (std::is_same<T, int32_t>::value) {
       SNPrintF(trace_buf_,
@@ -7063,7 +7063,7 @@ intptr_t Simulator::CallImpl(Address entry, int argument_count,
   }
   // Store remaining arguments on stack, from low to high memory.
   intptr_t* stack_argument = reinterpret_cast<intptr_t*>(entry_stack);
-  base::Memcpy(stack_argument + kCArgSlotCount, arguments + reg_arg_count,
+  memcpy(stack_argument + kCArgSlotCount, arguments + reg_arg_count,
          (argument_count - reg_arg_count) * sizeof(*arguments));
   set_register(sp, entry_stack);
 
@@ -7083,9 +7083,9 @@ double Simulator::CallFP(Address entry, double d0, double d1) {
   } else {
     int buffer[2];
     DCHECK(sizeof(buffer[0]) * 2 == sizeof(d0));
-    base::Memcpy(buffer, &d0, sizeof(d0));
+    memcpy(buffer, &d0, sizeof(d0));
     set_dw_register(a0, buffer);
-    base::Memcpy(buffer, &d1, sizeof(d1));
+    memcpy(buffer, &d1, sizeof(d1));
     set_dw_register(a2, buffer);
   }
   CallInternal(entry);

src/execution/mips64/simulator-mips64.cc

@@ -791,7 +791,7 @@ void Simulator::CheckICache(base::CustomMatcherHashMap* i_cache,
                        cache_page->CachedData(offset), kInstrSize));
   } else {
     // Cache miss.  Load memory into the cache.
-    base::Memcpy(cached_line, line, CachePage::kLineLength);
+    memcpy(cached_line, line, CachePage::kLineLength);
     *cache_valid_byte = CachePage::LINE_VALID;
   }
 }
@@ -932,8 +932,8 @@ double Simulator::get_double_from_register_pair(int reg) {
   // Read the bits from the unsigned integer register_[] array
   // into the double precision floating point value and return it.
   char buffer[sizeof(registers_[0])];
-  base::Memcpy(buffer, &registers_[reg], sizeof(registers_[0]));
-  base::Memcpy(&dm_val, buffer, sizeof(registers_[0]));
+  memcpy(buffer, &registers_[reg], sizeof(registers_[0]));
+  memcpy(&dm_val, buffer, sizeof(registers_[0]));
   return (dm_val);
 }
 
@@ -970,13 +970,13 @@ double Simulator::get_fpu_register_double(int fpureg) const {
 template <typename T>
 void Simulator::get_msa_register(int wreg, T* value) {
   DCHECK((wreg >= 0) && (wreg < kNumMSARegisters));
-  base::Memcpy(value, FPUregisters_ + wreg * 2, kSimd128Size);
+  memcpy(value, FPUregisters_ + wreg * 2, kSimd128Size);
 }
 
 template <typename T>
 void Simulator::set_msa_register(int wreg, const T* value) {
   DCHECK((wreg >= 0) && (wreg < kNumMSARegisters));
-  base::Memcpy(FPUregisters_ + wreg * 2, value, kSimd128Size);
+  memcpy(FPUregisters_ + wreg * 2, value, kSimd128Size);
 }
 
 // Runtime FP routines take up to two double arguments and zero
@@ -998,14 +998,14 @@ void Simulator::GetFpArgs(double* x, double* y, int32_t* z) {
     // Registers a0 and a1 -> x.
     reg_buffer[0] = get_register(a0);
     reg_buffer[1] = get_register(a1);
-    base::Memcpy(x, buffer, sizeof(buffer));
+    memcpy(x, buffer, sizeof(buffer));
     // Registers a2 and a3 -> y.
     reg_buffer[0] = get_register(a2);
     reg_buffer[1] = get_register(a3);
-    base::Memcpy(y, buffer, sizeof(buffer));
+    memcpy(y, buffer, sizeof(buffer));
     // Register 2 -> z.
     reg_buffer[0] = get_register(a2);
-    base::Memcpy(z, buffer, sizeof(*z));
+    memcpy(z, buffer, sizeof(*z));
   }
 }
 
@@ -1016,7 +1016,7 @@ void Simulator::SetFpResult(const double& result) {
   } else {
     char buffer[2 * sizeof(registers_[0])];
     int64_t* reg_buffer = reinterpret_cast<int64_t*>(buffer);
-    base::Memcpy(buffer, &result, sizeof(buffer));
+    memcpy(buffer, &result, sizeof(buffer));
     // Copy result to v0 and v1.
     set_register(v0, reg_buffer[0]);
     set_register(v1, reg_buffer[1]);
@@ -1625,7 +1625,7 @@ void Simulator::TraceMSARegWr(T* value, TraceType t) {
       float f[4];
       double df[2];
     } v;
-    base::Memcpy(v.b, value, kSimd128Size);
+    memcpy(v.b, value, kSimd128Size);
     switch (t) {
       case BYTE:
         SNPrintF(trace_buf_,
@@ -1678,7 +1678,7 @@ void Simulator::TraceMSARegWr(T* value) {
       float f[kMSALanesWord];
       double df[kMSALanesDword];
     } v;
-    base::Memcpy(v.b, value, kMSALanesByte);
+    memcpy(v.b, value, kMSALanesByte);
 
     if (std::is_same<T, int32_t>::value) {
       SNPrintF(trace_buf_,
@@ -7482,7 +7482,7 @@ intptr_t Simulator::CallImpl(Address entry, int argument_count,
   }
   // Store remaining arguments on stack, from low to high memory.
   intptr_t* stack_argument = reinterpret_cast<intptr_t*>(entry_stack);
-  base::Memcpy(stack_argument + kCArgSlotCount, arguments + reg_arg_count,
+  memcpy(stack_argument + kCArgSlotCount, arguments + reg_arg_count,
          stack_args_count * sizeof(*arguments));
   set_register(sp, entry_stack);
 
@@ -7503,9 +7503,9 @@ double Simulator::CallFP(Address entry, double d0, double d1) {
   } else {
     int buffer[2];
     DCHECK(sizeof(buffer[0]) * 2 == sizeof(d0));
-    base::Memcpy(buffer, &d0, sizeof(d0));
+    memcpy(buffer, &d0, sizeof(d0));
     set_dw_register(a0, buffer);
-    base::Memcpy(buffer, &d1, sizeof(d1));
+    memcpy(buffer, &d1, sizeof(d1));
     set_dw_register(a2, buffer);
   }
   CallInternal(entry);

src/execution/ppc/simulator-ppc.cc

@@ -716,7 +716,7 @@ void Simulator::CheckICache(base::CustomMatcherHashMap* i_cache,
                        cache_page->CachedData(offset), kInstrSize));
   } else {
     // Cache miss.  Load memory into the cache.
-    base::Memcpy(cached_line, line, CachePage::kLineLength);
+    memcpy(cached_line, line, CachePage::kLineLength);
     *cache_valid_byte = CachePage::LINE_VALID;
   }
 }
@@ -802,8 +802,8 @@ double Simulator::get_double_from_register_pair(int reg) {
   // Read the bits from the unsigned integer register_[] array
   // into the double precision floating point value and return it.
   char buffer[sizeof(fp_registers_[0])];
-  base::Memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
-  base::Memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
+  memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
+  memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
 #endif
   return (dm_val);
 }
@@ -1195,7 +1195,7 @@ void Simulator::SoftwareInterrupt(Instruction* instr) {
             set_register(r3, x);
             set_register(r4, y);
           } else {
-            base::Memcpy(reinterpret_cast<void*>(result_buffer), &result,
+            memcpy(reinterpret_cast<void*>(result_buffer), &result,
                    sizeof(ObjectPair));
             set_register(r3, result_buffer);
           }
@@ -5172,7 +5172,7 @@ intptr_t Simulator::CallImpl(Address entry, int argument_count,
   // +2 is a hack for the LR slot + old SP on PPC
   intptr_t* stack_argument =
       reinterpret_cast<intptr_t*>(entry_stack) + kStackFrameExtraParamSlot;
-  base::Memcpy(stack_argument, arguments + reg_arg_count,
+  memcpy(stack_argument, arguments + reg_arg_count,
          stack_arg_count * sizeof(*arguments));
   set_register(sp, entry_stack);
 

src/execution/ppc/simulator-ppc.h

@@ -287,7 +287,7 @@ class Simulator : public SimulatorBase {
   template <typename T>
   inline void Read(uintptr_t address, T* value) {
     base::MutexGuard lock_guard(&GlobalMonitor::Get()->mutex);
-    base::Memcpy(value, reinterpret_cast<const char*>(address), sizeof(T));
+    memcpy(value, reinterpret_cast<const char*>(address), sizeof(T));
   }
 
   template <typename T>
@@ -296,7 +296,7 @@ class Simulator : public SimulatorBase {
     GlobalMonitor::Get()->NotifyLoadExcl(
         address, static_cast<TransactionSize>(sizeof(T)),
         isolate_->thread_id());
-    base::Memcpy(value, reinterpret_cast<const char*>(address), sizeof(T));
+    memcpy(value, reinterpret_cast<const char*>(address), sizeof(T));
   }
 
   template <typename T>
@@ -305,7 +305,7 @@ class Simulator : public SimulatorBase {
     GlobalMonitor::Get()->NotifyStore(address,
                                       static_cast<TransactionSize>(sizeof(T)),
                                       isolate_->thread_id());
-    base::Memcpy(reinterpret_cast<char*>(address), &value, sizeof(T));
+    memcpy(reinterpret_cast<char*>(address), &value, sizeof(T));
   }
 
   template <typename T>
@@ -314,7 +314,7 @@ class Simulator : public SimulatorBase {
     if (GlobalMonitor::Get()->NotifyStoreExcl(
             address, static_cast<TransactionSize>(sizeof(T)),
             isolate_->thread_id())) {
-      base::Memcpy(reinterpret_cast<char*>(address), &value, sizeof(T));
+      memcpy(reinterpret_cast<char*>(address), &value, sizeof(T));
       return 0;
     } else {
       return 1;

src/execution/s390/simulator-s390.cc

@@ -735,7 +735,7 @@ void Simulator::CheckICache(base::CustomMatcherHashMap* i_cache,
              0);
   } else {
     // Cache miss.  Load memory into the cache.
-    base::Memcpy(cached_line, line, CachePage::kLineLength);
+    memcpy(cached_line, line, CachePage::kLineLength);
     *cache_valid_byte = CachePage::LINE_VALID;
   }
 }
@@ -1734,8 +1734,8 @@ double Simulator::get_double_from_register_pair(int reg) {
   // Read the bits from the unsigned integer register_[] array
   // into the double precision floating point value and return it.
   char buffer[sizeof(fp_registers_[0])];
-  base::Memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
-  base::Memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
+  memcpy(buffer, &registers_[reg], 2 * sizeof(registers_[0]));
+  memcpy(&dm_val, buffer, 2 * sizeof(registers_[0]));
 #endif
   return (dm_val);
 }
@@ -2200,7 +2200,7 @@ void Simulator::SoftwareInterrupt(Instruction* instr) {
             set_register(r2, x);
             set_register(r3, y);
           } else {
-            base::Memcpy(reinterpret_cast<void*>(result_buffer), &result,
+            memcpy(reinterpret_cast<void*>(result_buffer), &result,
                    sizeof(ObjectPair));
             set_register(r2, result_buffer);
           }
@@ -2602,7 +2602,7 @@ intptr_t Simulator::CallImpl(Address entry, int argument_count,
   // Store remaining arguments on stack, from low to high memory.
   intptr_t* stack_argument =
       reinterpret_cast<intptr_t*>(entry_stack + kCalleeRegisterSaveAreaSize);
-  base::Memcpy(stack_argument, arguments + reg_arg_count,
+  memcpy(stack_argument, arguments + reg_arg_count,
          stack_arg_count * sizeof(*arguments));
   set_register(sp, entry_stack);
 

src/heap/heap.cc

@@ -4926,12 +4926,12 @@ void Heap::ConfigureHeap(const v8::ResourceConstraints& constraints) {
 void Heap::AddToRingBuffer(const char* string) {
   size_t first_part =
       std::min(strlen(string), kTraceRingBufferSize - ring_buffer_end_);
-  base::Memcpy(trace_ring_buffer_ + ring_buffer_end_, string, first_part);
+  memcpy(trace_ring_buffer_ + ring_buffer_end_, string, first_part);
   ring_buffer_end_ += first_part;
   if (first_part < strlen(string)) {
     ring_buffer_full_ = true;
     size_t second_part = strlen(string) - first_part;
-    base::Memcpy(trace_ring_buffer_, string + first_part, second_part);
+    memcpy(trace_ring_buffer_, string + first_part, second_part);
     ring_buffer_end_ = second_part;
   }
 }
@@ -4940,9 +4940,9 @@ void Heap::GetFromRingBuffer(char* buffer) {
   size_t copied = 0;
   if (ring_buffer_full_) {
     copied = kTraceRingBufferSize - ring_buffer_end_;
-    base::Memcpy(buffer, trace_ring_buffer_ + ring_buffer_end_, copied);
+    memcpy(buffer, trace_ring_buffer_ + ring_buffer_end_, copied);
   }
-  base::Memcpy(buffer + copied, trace_ring_buffer_, ring_buffer_end_);
+  memcpy(buffer + copied, trace_ring_buffer_, ring_buffer_end_);
 }
 
 void Heap::ConfigureHeapDefault() {

src/libplatform/tracing/trace-object.cc

@@ -25,7 +25,7 @@ V8_INLINE static void CopyTraceObjectParameter(char** buffer,
                                                const char** member) {
   if (*member == nullptr) return;
   size_t length = strlen(*member) + 1;
-  base::Memcpy(*buffer, *member, length);
+  memcpy(*buffer, *member, length);
   *member = *buffer;
   *buffer += length;
 }

src/numbers/conversions-inl.h

@@ -51,7 +51,7 @@ inline unsigned int FastD2UI(double x) {
         reinterpret_cast<void*>(reinterpret_cast<Address>(&x) + kInt32Size);
 #endif
     // Copy least significant 32 bits of mantissa.
-    base::Memcpy(&result, mantissa_ptr, sizeof(result));
+    memcpy(&result, mantissa_ptr, sizeof(result));
     return negative ? ~result + 1 : result;
   }
   // Large number (outside uint32 range), Infinity or NaN.

src/numbers/conversions.cc

@@ -1349,8 +1349,7 @@ char* DoubleToRadixCString(double value, int radix) {
   DCHECK_LE(0, integer_cursor);
   // Allocate new string as return value.
   char* result = NewArray<char>(fraction_cursor - integer_cursor);
-  base::Memcpy(result, buffer + integer_cursor,
-               fraction_cursor - integer_cursor);
+  memcpy(result, buffer + integer_cursor, fraction_cursor - integer_cursor);
   return result;
 }
 

src/objects/backing-store.cc

@@ -510,8 +510,7 @@ std::unique_ptr<BackingStore> BackingStore::CopyWasmMemory(Isolate* isolate,
     // If the allocation was successful, then the new buffer must be at least
     // as big as the old one.
     DCHECK_GE(new_pages * wasm::kWasmPageSize, byte_length_);
-    base::Memcpy(new_backing_store->buffer_start(), buffer_start_,
-                 byte_length_);
+    memcpy(new_backing_store->buffer_start(), buffer_start_, byte_length_);
   }
 
   return new_backing_store;

src/objects/bigint.cc

@@ -377,8 +377,7 @@ Handle<MutableBigInt> MutableBigInt::Copy(Isolate* isolate,
   int length = source->length();
   // Allocating a BigInt of the same length as an existing BigInt cannot throw.
   Handle<MutableBigInt> result = New(isolate, length).ToHandleChecked();
-  base::Memcpy(
-      reinterpret_cast<void*>(result->address() + BigIntBase::kHeaderSize),
+  memcpy(reinterpret_cast<void*>(result->address() + BigIntBase::kHeaderSize),
          reinterpret_cast<void*>(source->address() + BigIntBase::kHeaderSize),
          BigInt::SizeFor(length) - BigIntBase::kHeaderSize);
   return result;
@@ -1956,7 +1955,7 @@ void BigInt::SerializeDigits(uint8_t* storage) {
       reinterpret_cast<void*>(ptr() + kDigitsOffset - kHeapObjectTag);
 #if defined(V8_TARGET_LITTLE_ENDIAN)
   int bytelength = length() * kDigitSize;
-  base::Memcpy(storage, digits, bytelength);
+  memcpy(storage, digits, bytelength);
 #elif defined(V8_TARGET_BIG_ENDIAN)
   digit_t* digit_storage = reinterpret_cast<digit_t*>(storage);
   const digit_t* digit = reinterpret_cast<const digit_t*>(digits);
@@ -1982,7 +1981,7 @@ MaybeHandle<BigInt> BigInt::FromSerializedDigits(
   void* digits =
       reinterpret_cast<void*>(result->ptr() + kDigitsOffset - kHeapObjectTag);
 #if defined(V8_TARGET_LITTLE_ENDIAN)
-  base::Memcpy(digits, digits_storage.begin(), bytelength);
+  memcpy(digits, digits_storage.begin(), bytelength);
   void* padding_start =
       reinterpret_cast<void*>(reinterpret_cast<Address>(digits) + bytelength);
   memset(padding_start, 0, length * kDigitSize - bytelength);

src/objects/fixed-array-inl.h

@@ -560,14 +560,14 @@ void ByteArray::copy_in(int index, const byte* buffer, int length) {
   DCHECK(index >= 0 && length >= 0 && length <= kMaxInt - index &&
          index + length <= this->length());
   Address dst_addr = field_address(kHeaderSize + index * kCharSize);
-  base::Memcpy(reinterpret_cast<void*>(dst_addr), buffer, length);
+  memcpy(reinterpret_cast<void*>(dst_addr), buffer, length);
 }
 
 void ByteArray::copy_out(int index, byte* buffer, int length) {
   DCHECK(index >= 0 && length >= 0 && length <= kMaxInt - index &&
          index + length <= this->length());
   Address src_addr = field_address(kHeaderSize + index * kCharSize);
-  base::Memcpy(buffer, reinterpret_cast<void*>(src_addr), length);
+  memcpy(buffer, reinterpret_cast<void*>(src_addr), length);
 }
 
 int ByteArray::get_int(int index) const {

src/objects/js-array-buffer.cc

@@ -186,7 +186,7 @@ Handle<JSArrayBuffer> JSTypedArray::GetBuffer() {
 
   // Copy the elements into the backing store of the array buffer.
   if (byte_length > 0) {
-    base::Memcpy(backing_store->buffer_start(), self->DataPtr(), byte_length);
+    memcpy(backing_store->buffer_start(), self->DataPtr(), byte_length);
   }
 
   // Attach the backing store to the array buffer.

src/objects/shared-function-info-inl.h

@@ -65,7 +65,7 @@ void PreparseData::copy_in(int index, const byte* buffer, int length) {
   DCHECK(index >= 0 && length >= 0 && length <= kMaxInt - index &&
          index + length <= this->data_length());
   Address dst_addr = field_address(kDataStartOffset + index * kByteSize);
-  base::Memcpy(reinterpret_cast<void*>(dst_addr), buffer, length);
+  memcpy(reinterpret_cast<void*>(dst_addr), buffer, length);
 }
 
 PreparseData PreparseData::get_child(int index) const {

src/objects/value-serializer.cc

@@ -334,7 +334,7 @@ void ValueSerializer::WriteBigIntContents(BigInt bigint) {
 void ValueSerializer::WriteRawBytes(const void* source, size_t length) {
   uint8_t* dest;
   if (ReserveRawBytes(length).To(&dest) && length > 0) {
-    base::Memcpy(dest, source, length);
+    memcpy(dest, source, length);
   }
 }
 
@@ -1226,7 +1226,7 @@ Maybe<double> ValueDeserializer::ReadDouble() {
   if (sizeof(double) > static_cast<unsigned>(end_ - position_))
     return Nothing<double>();
   double value;
-  base::Memcpy(&value, position_, sizeof(double));
+  memcpy(&value, position_, sizeof(double));
   position_ += sizeof(double);
   if (std::isnan(value)) value = std::numeric_limits<double>::quiet_NaN();
   return Just(value);
@@ -1465,7 +1465,7 @@ MaybeHandle<String> ValueDeserializer::ReadTwoByteString() {
   // Copy the bytes directly into the new string.
   // Warning: this uses host endianness.
   DisallowGarbageCollection no_gc;
-  base::Memcpy(string->GetChars(no_gc), bytes.begin(), bytes.length());
+  memcpy(string->GetChars(no_gc), bytes.begin(), bytes.length());
   return string;
 }
 
@@ -1826,7 +1826,7 @@ MaybeHandle<JSArrayBuffer> ValueDeserializer::ReadJSArrayBuffer(
   if (!result.ToHandle(&array_buffer)) return result;
 
   if (byte_length > 0) {
-    base::Memcpy(array_buffer->backing_store(), position_, byte_length);
+    memcpy(array_buffer->backing_store(), position_, byte_length);
   }
   position_ += byte_length;
   AddObjectWithID(id, array_buffer);

src/parsing/preparse-data.cc

@@ -134,7 +134,7 @@ struct RawPreparseData {};
 
 void PreparseDataBuilder::ByteData::Finalize(Zone* zone) {
   uint8_t* raw_zone_data = zone->NewArray<uint8_t, RawPreparseData>(index_);
-  base::Memcpy(raw_zone_data, byte_data_->data(), index_);
+  memcpy(raw_zone_data, byte_data_->data(), index_);
   byte_data_->resize(0);
   zone_byte_data_ = Vector<uint8_t>(raw_zone_data, index_);
 #ifdef DEBUG

src/parsing/scanner.cc

@@ -1046,7 +1046,7 @@ const char* Scanner::CurrentLiteralAsCString(Zone* zone) const {
   Vector<const uint8_t> vector = literal_one_byte_string();
   int length = vector.length();
   char* buffer = zone->NewArray<char>(length + 1);
-  base::Memcpy(buffer, vector.begin(), length);
+  memcpy(buffer, vector.begin(), length);
   buffer[length] = '\0';
   return buffer;
 }

src/runtime/runtime.cc

@@ -264,7 +264,7 @@ const Runtime::Function* Runtime::RuntimeFunctionTable(Isolate* isolate) {
   if (!isolate->runtime_state()->redirected_intrinsic_functions()) {
     size_t function_count = arraysize(kIntrinsicFunctions);
     Function* redirected_functions = new Function[function_count];
-    base::Memcpy(redirected_functions, kIntrinsicFunctions,
+    memcpy(redirected_functions, kIntrinsicFunctions,
            sizeof(kIntrinsicFunctions));
     for (size_t i = 0; i < function_count; i++) {
       ExternalReference redirected_entry =

src/snapshot/deserializer.cc

@@ -192,7 +192,7 @@ class SlotAccessorForHandle {
 template <typename TSlot>
 int Deserializer::WriteAddress(TSlot dest, Address value) {
   DCHECK(!next_reference_is_weak_);
-  base::Memcpy(dest.ToVoidPtr(), &value, kSystemPointerSize);
+  memcpy(dest.ToVoidPtr(), &value, kSystemPointerSize);
   STATIC_ASSERT(IsAligned(kSystemPointerSize, TSlot::kSlotDataSize));
   return (kSystemPointerSize / TSlot::kSlotDataSize);
 }

src/snapshot/embedded/platform-embedded-file-writer-base.cc

@@ -60,11 +60,11 @@ int PlatformEmbeddedFileWriterBase::WriteByteChunk(const uint8_t* data) {
       break;
     case 16:
 #ifdef V8_TARGET_BIG_ENDIAN
-      base::Memcpy(&high, data, kHalfSize);
-      base::Memcpy(&low, data + kHalfSize, kHalfSize);
+      memcpy(&high, data, kHalfSize);
+      memcpy(&low, data + kHalfSize, kHalfSize);
 #else
-      base::Memcpy(&high, data + kHalfSize, kHalfSize);
-      base::Memcpy(&low, data, kHalfSize);
+      memcpy(&high, data + kHalfSize, kHalfSize);
+      memcpy(&low, data, kHalfSize);
 #endif  // V8_TARGET_BIG_ENDIAN
       break;
     default:

src/snapshot/snapshot-source-sink.h

@@ -52,7 +52,7 @@ class SnapshotByteSource final {
   void Advance(int by) { position_ += by; }
 
   void CopyRaw(void* to, int number_of_bytes) {
-    base::Memcpy(to, data_ + position_, number_of_bytes);
+    memcpy(to, data_ + position_, number_of_bytes);
     position_ += number_of_bytes;
   }
 
@@ -62,7 +62,7 @@ class SnapshotByteSource final {
     for (base::AtomicWord* p = start; p < end;
          ++p, position_ += sizeof(base::AtomicWord)) {
       base::AtomicWord val;
-      base::Memcpy(&val, data_ + position_, sizeof(base::AtomicWord));
+      memcpy(&val, data_ + position_, sizeof(base::AtomicWord));
       base::Relaxed_Store(p, val);
     }
   }
@@ -74,7 +74,7 @@ class SnapshotByteSource final {
     for (AtomicTagged_t* p = start; p < end;
          ++p, position_ += sizeof(AtomicTagged_t)) {
       AtomicTagged_t val;
-      base::Memcpy(&val, data_ + position_, sizeof(AtomicTagged_t));
+      memcpy(&val, data_ + position_, sizeof(AtomicTagged_t));
       base::Relaxed_Store(p, val);
     }
   }

src/tracing/trace-event.h

@@ -442,7 +442,7 @@ SetTraceValue(T arg, unsigned char* type, uint64_t* value) {
     *type = value_type_id;                                                  \
     *value = 0;                                                             \
     STATIC_ASSERT(sizeof(arg) <= sizeof(*value));                           \
-    base::Memcpy(value, &arg, sizeof(arg));                                 \
+    memcpy(value, &arg, sizeof(arg));                                       \
   }
 INTERNAL_DECLARE_SET_TRACE_VALUE(double, TRACE_VALUE_TYPE_DOUBLE)
 INTERNAL_DECLARE_SET_TRACE_VALUE(const void*, TRACE_VALUE_TYPE_POINTER)

src/utils/memcopy.h

@@ -45,7 +45,7 @@ using MemCopyUint8Function = void (*)(uint8_t* dest, const uint8_t* src,
 V8_EXPORT_PRIVATE extern MemCopyUint8Function memcopy_uint8_function;
 V8_INLINE void MemCopyUint8Wrapper(uint8_t* dest, const uint8_t* src,
                                    size_t chars) {
-  base::Memcpy(dest, src, chars);
+  memcpy(dest, src, chars);
 }
 // For values < 16, the assembler function is slower than the inlined C code.
 const size_t kMinComplexMemCopy = 16;
@@ -66,7 +66,7 @@ using MemCopyUint8Function = void (*)(uint8_t* dest, const uint8_t* src,
 V8_EXPORT_PRIVATE extern MemCopyUint8Function memcopy_uint8_function;
 V8_INLINE void MemCopyUint8Wrapper(uint8_t* dest, const uint8_t* src,
                                    size_t chars) {
-  base::Memcpy(dest, src, chars);
+  memcpy(dest, src, chars);
 }
 // For values < 16, the assembler function is slower than the inlined C code.
 const size_t kMinComplexMemCopy = 16;
@@ -87,7 +87,7 @@ inline void MemCopy(void* dest, const void* src, size_t size) {
   switch (size) {
 #define CASE(N)           \
   case N:                 \
-    base::Memcpy(dest, src, N); \
+    memcpy(dest, src, N); \
     return;
     CASE(1)
     CASE(2)
@@ -107,7 +107,7 @@ inline void MemCopy(void* dest, const void* src, size_t size) {
     CASE(16)
 #undef CASE
     default:
-      base::Memcpy(dest, src, size);
+      memcpy(dest, src, size);
       return;
   }
 }

src/wasm/baseline/arm/liftoff-assembler-arm.h

@@ -3831,7 +3831,7 @@ void LiftoffAssembler::emit_f64x2_le(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_s128_const(LiftoffRegister dst,
                                        const uint8_t imms[16]) {
   uint64_t vals[2];
-  base::Memcpy(vals, imms, sizeof(vals));
+  memcpy(vals, imms, sizeof(vals));
   vmov(dst.low_fp(), Double(vals[0]));
   vmov(dst.high_fp(), Double(vals[1]));
 }

src/wasm/baseline/arm64/liftoff-assembler-arm64.h

@@ -2842,7 +2842,7 @@ void LiftoffAssembler::emit_f64x2_le(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_s128_const(LiftoffRegister dst,
                                        const uint8_t imms[16]) {
   uint64_t vals[2];
-  base::Memcpy(vals, imms, sizeof(vals));
+  memcpy(vals, imms, sizeof(vals));
   Movi(dst.fp().V16B(), vals[1], vals[0]);
 }
 

src/wasm/baseline/ia32/liftoff-assembler-ia32.h

@@ -3245,7 +3245,7 @@ void LiftoffAssembler::emit_f64x2_le(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_s128_const(LiftoffRegister dst,
                                        const uint8_t imms[16]) {
   uint64_t vals[2];
-  base::Memcpy(vals, imms, sizeof(vals));
+  memcpy(vals, imms, sizeof(vals));
   TurboAssembler::Move(dst.fp(), vals[0]);
 
   uint64_t high = vals[1];

src/wasm/baseline/liftoff-compiler.cc

@@ -3926,7 +3926,7 @@ class LiftoffCompiler {
     LiftoffRegister dst = __ GetUnusedRegister(result_rc, {lhs, rhs}, {});
 
     uint8_t shuffle[kSimd128Size];
-    base::Memcpy(shuffle, imm.value, sizeof(shuffle));
+    memcpy(shuffle, imm.value, sizeof(shuffle));
     bool is_swizzle;
     bool needs_swap;
     wasm::SimdShuffle::CanonicalizeShuffle(lhs == rhs, shuffle, &needs_swap,

src/wasm/baseline/mips64/liftoff-assembler-mips64.h

@@ -1936,7 +1936,7 @@ void LiftoffAssembler::emit_s128_const(LiftoffRegister dst,
                                        const uint8_t imms[16]) {
   MSARegister dst_msa = dst.fp().toW();
   uint64_t vals[2];
-  base::Memcpy(vals, imms, sizeof(vals));
+  memcpy(vals, imms, sizeof(vals));
   li(kScratchReg, vals[0]);
   insert_d(dst_msa, 0, kScratchReg);
   li(kScratchReg, vals[1]);

src/wasm/baseline/x64/liftoff-assembler-x64.h

@@ -2851,7 +2851,7 @@ void LiftoffAssembler::emit_f64x2_le(LiftoffRegister dst, LiftoffRegister lhs,
 void LiftoffAssembler::emit_s128_const(LiftoffRegister dst,
                                        const uint8_t imms[16]) {
   uint64_t vals[2];
-  base::Memcpy(vals, imms, sizeof(vals));
+  memcpy(vals, imms, sizeof(vals));
   TurboAssembler::Move(dst.fp(), vals[0]);
   movq(kScratchRegister, vals[1]);
   Pinsrq(dst.fp(), kScratchRegister, uint8_t{1});

src/wasm/c-api.cc

@@ -2350,7 +2350,7 @@ struct borrowed_vec {
                              const wasm_##name##_t data[]) {        \
     auto v2 = wasm::vec<Name>::make_uninitialized(size);            \
     if (v2.size() != 0) {                                           \
-      v8::base::Memcpy(v2.get(), data, size * sizeof(wasm_##name##_t)); \
+      memcpy(v2.get(), data, size * sizeof(wasm_##name##_t));       \
     }                                                               \
     *out = release_##name##_vec(std::move(v2));                     \
   }                                                                 \

src/wasm/function-body-decoder-impl.h

@@ -445,7 +445,7 @@ struct ImmF32Immediate {
     // returns a float would potentially flip NaN bits per C++ semantics, so we
     // have to inline the memcpy call directly.
     uint32_t tmp = decoder->read_u32<validate>(pc, "immf32");
-    base::Memcpy(&value, &tmp, sizeof(value));
+    memcpy(&value, &tmp, sizeof(value));
   }
 };
 
@@ -456,7 +456,7 @@ struct ImmF64Immediate {
   inline ImmF64Immediate(Decoder* decoder, const byte* pc) {
     // Avoid bit_cast because it might not preserve the signalling bit of a NaN.
     uint64_t tmp = decoder->read_u64<validate>(pc, "immf64");
-    base::Memcpy(&value, &tmp, sizeof(value));
+    memcpy(&value, &tmp, sizeof(value));
   }
 };
 

src/wasm/local-decl-encoder.cc

@@ -21,7 +21,7 @@ void LocalDeclEncoder::Prepend(Zone* zone, const byte** start,
   byte* buffer = zone->NewArray<byte, LocalDeclEncoderBuffer>(Size() + size);
   size_t pos = Emit(buffer);
   if (size > 0) {
-    base::Memcpy(buffer + pos, *start, size);
+    memcpy(buffer + pos, *start, size);
   }
   pos += size;
   *start = buffer;

src/wasm/streaming-decoder.cc

@@ -63,8 +63,7 @@ class V8_EXPORT_PRIVATE AsyncStreamingDecoder : public StreamingDecoder {
               1 + length_bytes.length() + payload_length)),
           payload_offset_(1 + length_bytes.length()) {
       bytes_.start()[0] = id;
-      base::Memcpy(bytes_.start() + 1, &length_bytes.first(),
-                   length_bytes.length());
+      memcpy(bytes_.start() + 1, &length_bytes.first(), length_bytes.length());
     }
 
     SectionCode section_code() const {
@@ -254,7 +253,7 @@ size_t AsyncStreamingDecoder::DecodingState::ReadBytes(
   Vector<uint8_t> remaining_buf = buffer() + offset();
   size_t num_bytes = std::min(bytes.size(), remaining_buf.size());
   TRACE_STREAMING("ReadBytes(%zu bytes)\n", num_bytes);
-  base::Memcpy(remaining_buf.begin(), &bytes.first(), num_bytes);
+  memcpy(remaining_buf.begin(), &bytes.first(), num_bytes);
   set_offset(offset() + num_bytes);
   return num_bytes;
 }
@@ -290,12 +289,12 @@ void AsyncStreamingDecoder::Finish() {
 #define BYTES(x) (x & 0xFF), (x >> 8) & 0xFF, (x >> 16) & 0xFF, (x >> 24) & 0xFF
     uint8_t module_header[]{BYTES(kWasmMagic), BYTES(kWasmVersion)};
 #undef BYTES
-    base::Memcpy(cursor, module_header, arraysize(module_header));
+    memcpy(cursor, module_header, arraysize(module_header));
     cursor += arraysize(module_header);
   }
   for (const auto& buffer : section_buffers_) {
     DCHECK_LE(cursor - bytes.start() + buffer->length(), total_size_);
-    base::Memcpy(cursor, buffer->bytes().begin(), buffer->length());
+    memcpy(cursor, buffer->bytes().begin(), buffer->length());
     cursor += buffer->length();
   }
   processor_->OnFinishedStream(std::move(bytes));
@@ -514,7 +513,7 @@ size_t AsyncStreamingDecoder::DecodeVarInt32::ReadBytes(
   Vector<uint8_t> remaining_buf = buf + offset();
   size_t new_bytes = std::min(bytes.size(), remaining_buf.size());
   TRACE_STREAMING("ReadBytes of a VarInt\n");
-  base::Memcpy(remaining_buf.begin(), &bytes.first(), new_bytes);
+  memcpy(remaining_buf.begin(), &bytes.first(), new_bytes);
   buf.Truncate(offset() + new_bytes);
   Decoder decoder(buf,
                   streaming->module_offset() - static_cast<uint32_t>(offset()));
@@ -628,7 +627,7 @@ AsyncStreamingDecoder::DecodeNumberOfFunctions::NextWithValue(
   if (payload_buf.size() < bytes_consumed_) {
     return streaming->Error("invalid code section length");
   }
-  base::Memcpy(payload_buf.begin(), buffer().begin(), bytes_consumed_);
+  memcpy(payload_buf.begin(), buffer().begin(), bytes_consumed_);
 
   // {value} is the number of functions.
   if (value_ == 0) {
@@ -663,7 +662,7 @@ AsyncStreamingDecoder::DecodeFunctionLength::NextWithValue(
   if (fun_length_buffer.size() < bytes_consumed_) {
     return streaming->Error("read past code section end");
   }
-  base::Memcpy(fun_length_buffer.begin(), buffer().begin(), bytes_consumed_);
+  memcpy(fun_length_buffer.begin(), buffer().begin(), bytes_consumed_);
 
   // {value} is the length of the function.
   if (value_ == 0) return streaming->Error("invalid function length (0)");

src/wasm/wasm-code-manager.cc

@@ -185,7 +185,7 @@ std::unique_ptr<const byte[]> WasmCode::ConcatenateBytes(
   byte* ptr = result.get();
   for (auto& vec : vectors) {
     if (vec.empty()) continue;  // Avoid nullptr in {memcpy}.
-    base::Memcpy(ptr, vec.begin(), vec.size());
+    memcpy(ptr, vec.begin(), vec.size());
     ptr += vec.size();
   }
   return result;
@@ -883,7 +883,7 @@ void NativeModule::ReserveCodeTableForTesting(uint32_t max_functions) {
   DCHECK_LE(module_->num_declared_functions, max_functions);
   auto new_table = std::make_unique<WasmCode*[]>(max_functions);
   if (module_->num_declared_functions > 0) {
-    base::Memcpy(new_table.get(), code_table_.get(),
+    memcpy(new_table.get(), code_table_.get(),
            module_->num_declared_functions * sizeof(WasmCode*));
   }
   code_table_ = std::move(new_table);
@@ -967,8 +967,7 @@ WasmCode* NativeModule::AddCodeForTesting(Handle<Code> code) {
   base::RecursiveMutexGuard guard{&allocation_mutex_};
   Vector<uint8_t> dst_code_bytes =
       code_allocator_.AllocateForCode(this, instructions.size());
-  base::Memcpy(dst_code_bytes.begin(), instructions.begin(),
-               instructions.size());
+  memcpy(dst_code_bytes.begin(), instructions.begin(), instructions.size());
 
   // Apply the relocation delta by iterating over the RelocInfo.
   intptr_t delta = reinterpret_cast<Address>(dst_code_bytes.begin()) -
@@ -1096,7 +1095,7 @@ std::unique_ptr<WasmCode> NativeModule::AddCodeWithCodeSpace(
   const int instr_size = desc.instr_size;
 
   CODE_SPACE_WRITE_SCOPE
-  base::Memcpy(dst_code_bytes.begin(), desc.buffer,
+  memcpy(dst_code_bytes.begin(), desc.buffer,
          static_cast<size_t>(desc.instr_size));
 
   // Apply the relocation delta by iterating over the RelocInfo.

src/wasm/wasm-engine.cc

@@ -631,7 +631,7 @@ void WasmEngine::AsyncCompile(
     if (is_shared) {
       // Make a copy of the wire bytes to avoid concurrent modification.
       std::unique_ptr<uint8_t[]> copy(new uint8_t[bytes.length()]);
-      base::Memcpy(copy.get(), bytes.start(), bytes.length());
+      memcpy(copy.get(), bytes.start(), bytes.length());
       ModuleWireBytes bytes_copy(copy.get(), copy.get() + bytes.length());
       module_object = SyncCompile(isolate, enabled, &thrower, bytes_copy);
     } else {
@@ -659,7 +659,7 @@ void WasmEngine::AsyncCompile(
   // Make a copy of the wire bytes in case the user program changes them
   // during asynchronous compilation.
   std::unique_ptr<byte[]> copy(new byte[bytes.length()]);
-  base::Memcpy(copy.get(), bytes.start(), bytes.length());
+  memcpy(copy.get(), bytes.start(), bytes.length());
 
   AsyncCompileJob* job = CreateAsyncCompileJob(
       isolate, enabled, std::move(copy), bytes.length(),

src/wasm/wasm-init-expr.h

@@ -63,7 +63,7 @@ class WasmInitExpr {
     immediate_.f64_const = v;
   }
   explicit WasmInitExpr(uint8_t v[kSimd128Size]) : kind_(kS128Const) {
-    base::Memcpy(immediate_.s128_const.data(), v, kSimd128Size);
+    memcpy(immediate_.s128_const.data(), v, kSimd128Size);
   }
 
   MOVE_ONLY_NO_DEFAULT_CONSTRUCTOR(WasmInitExpr);

src/wasm/wasm-js.cc

@@ -637,7 +637,7 @@ void WebAssemblyValidate(const v8::FunctionCallbackInfo<v8::Value>& args) {
   if (is_shared) {
     // Make a copy of the wire bytes to avoid concurrent modification.
     std::unique_ptr<uint8_t[]> copy(new uint8_t[bytes.length()]);
-    base::Memcpy(copy.get(), bytes.start(), bytes.length());
+    memcpy(copy.get(), bytes.start(), bytes.length());
     i::wasm::ModuleWireBytes bytes_copy(copy.get(),
                                         copy.get() + bytes.length());
     validated = i_isolate->wasm_engine()->SyncValidate(
@@ -680,7 +680,7 @@ void WebAssemblyModule(const v8::FunctionCallbackInfo<v8::Value>& args) {
   if (is_shared) {
     // Make a copy of the wire bytes to avoid concurrent modification.
     std::unique_ptr<uint8_t[]> copy(new uint8_t[bytes.length()]);
-    base::Memcpy(copy.get(), bytes.start(), bytes.length());
+    memcpy(copy.get(), bytes.start(), bytes.length());
     i::wasm::ModuleWireBytes bytes_copy(copy.get(),
                                         copy.get() + bytes.length());
     module_obj = i_isolate->wasm_engine()->SyncCompile(

src/wasm/wasm-module-builder.h

@@ -93,7 +93,7 @@ class ZoneBuffer : public ZoneObject {
   void write(const byte* data, size_t size) {
     if (size == 0) return;
     EnsureSpace(size);
-    base::Memcpy(pos_, data, size);
+    memcpy(pos_, data, size);
     pos_ += size;
   }
 
@@ -139,7 +139,7 @@ class ZoneBuffer : public ZoneObject {
     if ((pos_ + size) > end_) {
       size_t new_size = size + (end_ - buffer_) * 2;
       byte* new_buffer = zone_->NewArray<byte, Buffer>(new_size);
-      base::Memcpy(new_buffer, buffer_, (pos_ - buffer_));
+      memcpy(new_buffer, buffer_, (pos_ - buffer_));
       pos_ = new_buffer + (pos_ - buffer_);
       buffer_ = new_buffer;
       end_ = new_buffer + new_size;

src/wasm/wasm-module.cc

@@ -547,7 +547,7 @@ Handle<JSArray> GetCustomSections(Isolate* isolate,
       thrower->RangeError("out of memory allocating custom section data");
       return Handle<JSArray>();
     }
-    base::Memcpy(array_buffer->backing_store(),
+    memcpy(array_buffer->backing_store(),
            wire_bytes.begin() + section.payload.offset(),
            section.payload.length());
 

src/wasm/wasm-module.h

@@ -510,7 +510,7 @@ class TruncatedUserString {
   TruncatedUserString(const char* start, size_t len)
       : start_(start), length_(std::min(kMaxLen, static_cast<int>(len))) {
     if (len > static_cast<size_t>(kMaxLen)) {
-      base::Memcpy(buffer_, start, kMaxLen - 3);
+      memcpy(buffer_, start, kMaxLen - 3);
       memset(buffer_ + kMaxLen - 3, '.', 3);
       start_ = buffer_;
     }

src/wasm/wasm-serialization.cc

@@ -59,7 +59,7 @@ class Writer {
   void WriteVector(const Vector<const byte> v) {
     DCHECK_GE(current_size(), v.size());
     if (v.size() > 0) {
-      base::Memcpy(current_location(), v.begin(), v.size());
+      memcpy(current_location(), v.begin(), v.size());
       pos_ += v.size();
     }
     if (FLAG_trace_wasm_serialization) {
@@ -383,7 +383,7 @@ bool NativeModuleSerializer::WriteCode(const WasmCode* code, Writer* writer) {
     code_start = aligned_buffer.get();
   }
 #endif
-  base::Memcpy(code_start, code->instructions().begin(), code_size);
+  memcpy(code_start, code->instructions().begin(), code_size);
   // Relocate the code.
   int mask = RelocInfo::ModeMask(RelocInfo::WASM_CALL) |
              RelocInfo::ModeMask(RelocInfo::WASM_STUB_CALL) |
@@ -430,7 +430,7 @@ bool NativeModuleSerializer::WriteCode(const WasmCode* code, Writer* writer) {
   }
   // If we copied to an aligned buffer, copy code into serialized buffer.
   if (code_start != serialized_code_start) {
-    base::Memcpy(serialized_code_start, code_start, code_size);
+    memcpy(serialized_code_start, code_start, code_size);
   }
   total_written_code_ += code_size;
   return true;
@@ -742,7 +742,7 @@ DeserializationUnit NativeModuleDeserializer::ReadCode(int fn_index,
 
 void NativeModuleDeserializer::CopyAndRelocate(
     const DeserializationUnit& unit) {
-  base::Memcpy(unit.code->instructions().begin(), unit.src_code_buffer.begin(),
+  memcpy(unit.code->instructions().begin(), unit.src_code_buffer.begin(),
          unit.src_code_buffer.size());
 
   // Relocate the code.

src/wasm/wasm-value.h

@@ -49,7 +49,7 @@ class Simd128 {
 #undef DEFINE_SIMD_TYPE_SPECIFIC_METHODS
 
   explicit Simd128(byte* bytes) {
-    base::Memcpy(static_cast<void*>(val_), reinterpret_cast<void*>(bytes),
+    memcpy(static_cast<void*>(val_), reinterpret_cast<void*>(bytes),
            kSimd128Size);
   }
 
@@ -117,7 +117,7 @@ class WasmValue {
   // value.
   WasmValue(byte* raw_bytes, ValueType type) : type_(type), bit_pattern_{} {
     DCHECK(type_.is_numeric());
-    base::Memcpy(bit_pattern_, raw_bytes, type.element_size_bytes());
+    memcpy(bit_pattern_, raw_bytes, type.element_size_bytes());
   }
 
   WasmValue(Handle<Object> ref, ValueType type) : type_(type), bit_pattern_{} {
@@ -143,7 +143,7 @@ class WasmValue {
   // Copy the underlying value to a byte pointer to a little endian value.
   void CopyTo(byte* to) const {
     DCHECK(type_.is_numeric());
-    base::Memcpy(to, bit_pattern_, type_.element_size_bytes());
+    memcpy(to, bit_pattern_, type_.element_size_bytes());
   }
 
   // Store the undelying value to a byte pointer, using the system's endianness.
@@ -152,36 +152,36 @@ class WasmValue {
     switch (type_.kind()) {
       case kI8: {
         int8_t value = to_i8();
-        base::Memcpy(static_cast<void*>(to), &value, sizeof(value));
+        memcpy(static_cast<void*>(to), &value, sizeof(value));
         break;
       }
       case kI16: {
         int16_t value = to_i16();
-        base::Memcpy(static_cast<void*>(to), &value, sizeof(value));
+        memcpy(static_cast<void*>(to), &value, sizeof(value));
         break;
       }
       case kI32: {
         int32_t value = to_i32();
-        base::Memcpy(static_cast<void*>(to), &value, sizeof(value));
+        memcpy(static_cast<void*>(to), &value, sizeof(value));
         break;
       }
       case kI64: {
         int64_t value = to_i64();
-        base::Memcpy(static_cast<void*>(to), &value, sizeof(value));
+        memcpy(static_cast<void*>(to), &value, sizeof(value));
         break;
       }
       case kF32: {
         float value = to_f32();
-        base::Memcpy(static_cast<void*>(to), &value, sizeof(value));
+        memcpy(static_cast<void*>(to), &value, sizeof(value));
         break;
       }
       case kF64: {
         double value = to_f64();
-        base::Memcpy(static_cast<void*>(to), &value, sizeof(value));
+        memcpy(static_cast<void*>(to), &value, sizeof(value));
         break;
       }
       case kS128:
-        base::Memcpy(static_cast<void*>(to), to_s128().bytes(), kSimd128Size);
+        memcpy(static_cast<void*>(to), to_s128().bytes(), kSimd128Size);
         break;
       case kRtt:
       case kRttWithDepth:

src/zone/zone-list-inl.h

@@ -36,7 +36,7 @@ void ZoneList<T>::AddAll(const Vector<const T>& other, Zone* zone) {
   int result_length = length_ + length;
   if (capacity_ < result_length) Resize(result_length, zone);
   if (std::is_trivially_copyable<T>::value) {
-    base::Memcpy(&data_[length_], other.begin(), sizeof(T) * length);
+    memcpy(&data_[length_], other.begin(), sizeof(T) * length);
   } else {
     std::copy(other.begin(), other.end(), &data_[length_]);
   }