Replace some calls to MemCopy with small constant sizes with memcpy

src/gdb-jit.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifdef ENABLE_GDB_JIT_INTERFACE
 #include "v8.h"
 #include "gdb-jit.h"
 
 #include "bootstrapper.h"
 #include "compiler.h"
@@ skipping 640 matching lines @@
     Writer::Slot<ELFHeader> header = w->CreateSlotHere<ELFHeader>();
 #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X87
     const uint8_t ident[16] =
         { 0x7f, 'E', 'L', 'F', 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 #elif V8_TARGET_ARCH_X64
     const uint8_t ident[16] =
         { 0x7f, 'E', 'L', 'F', 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 #else
 #error Unsupported target architecture.
 #endif
-    MemCopy(header->ident, ident, 16);
+    memcpy(header->ident, ident, 16);
     header->type = 1;
 #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87
     header->machine = 3;
 #elif V8_TARGET_ARCH_X64
     // Processor identification value for x64 is 62 as defined in
     //    System V ABI, AMD64 Supplement
     //    http://www.x86-64.org/documentation/abi.pdf
     header->machine = 62;
 #elif V8_TARGET_ARCH_ARM
     // Set to EM_ARM, defined as 40, in "ARM ELF File Format" at
@@ skipping 1495 matching lines @@
   LockGuard<Mutex> lock_guard(mutex.Pointer());
   ASSERT(!IsLineInfoTagged(line_info));
   HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true);
   ASSERT(e->value == NULL);
   e->value = TagLineInfo(line_info);
 }
 
 
 } }  // namespace v8::internal
 #endif