[cleanup] Delete MacroAssembler::CopyBytes, it is dead code

test/cctest/test-macro-assembler-arm.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 24 matching lines @@
 #include "src/arm/macro-assembler-arm.h"
 #include "src/arm/simulator-arm.h"
 
 
 using namespace v8::internal;
 
 typedef void* (*F)(int x, int y, int p2, int p3, int p4);
 
 #define __ masm->
 
-
-static byte to_non_zero(int n) {
-  return static_cast<unsigned>(n) % 255 + 1;
-}
-
-
-static bool all_zeroes(const byte* beg, const byte* end) {
-  CHECK(beg);
-  CHECK(beg <= end);
-  while (beg < end) {
-    if (*beg++ != 0)
-      return false;
-  }
-  return true;
-}
-
-
-TEST(CopyBytes) {
-  CcTest::InitializeVM();
-  Isolate* isolate = CcTest::i_isolate();
-  HandleScope handles(isolate);
-
-  const int data_size = 1 * KB;
-  size_t act_size;
-
-  // Allocate two blocks to copy data between.
-  byte* src_buffer =
-      static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
-  CHECK(src_buffer);
-  CHECK(act_size >= static_cast<size_t>(data_size));
-  byte* dest_buffer =
-      static_cast<byte*>(v8::base::OS::Allocate(data_size, &act_size, 0));
-  CHECK(dest_buffer);
-  CHECK(act_size >= static_cast<size_t>(data_size));
-
-  // Storage for R0 and R1.
-  byte* r0_;
-  byte* r1_;
-
-  MacroAssembler assembler(isolate, NULL, 0,
-                           v8::internal::CodeObjectRequired::kYes);
-  MacroAssembler* masm = &assembler;
-
-  // Code to be generated: The stuff in CopyBytes followed by a store of R0 and
-  // R1, respectively.
-  __ CopyBytes(r0, r1, r2, r3);
-  __ mov(r2, Operand(reinterpret_cast<int>(&r0_)));
-  __ mov(r3, Operand(reinterpret_cast<int>(&r1_)));
-  __ str(r0, MemOperand(r2));
-  __ str(r1, MemOperand(r3));
-  __ bx(lr);
-
-  CodeDesc desc;
-  masm->GetCode(&desc);
-  Handle<Code> code = isolate->factory()->NewCode(
-      desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
-
-  F f = FUNCTION_CAST<F>(code->entry());
-
-  // Initialise source data with non-zero bytes.
-  for (int i = 0; i < data_size; i++) {
-    src_buffer[i] = to_non_zero(i);
-  }
-
-  const int fuzz = 11;
-
-  for (int size = 0; size < 600; size++) {
-    for (const byte* src = src_buffer; src < src_buffer + fuzz; src++) {
-      for (byte* dest = dest_buffer; dest < dest_buffer + fuzz; dest++) {
-        memset(dest_buffer, 0, data_size);
-        CHECK(dest + size < dest_buffer + data_size);
-        (void)CALL_GENERATED_CODE(isolate, f, reinterpret_cast<int>(src),
-                                  reinterpret_cast<int>(dest), size, 0, 0);
-        // R0 and R1 should point at the first byte after the copied data.
-        CHECK_EQ(src + size, r0_);
-        CHECK_EQ(dest + size, r1_);
-        // Check that we haven't written outside the target area.
-        CHECK(all_zeroes(dest_buffer, dest));
-        CHECK(all_zeroes(dest + size, dest_buffer + data_size));
-        // Check the target area.
-        CHECK_EQ(0, memcmp(src, dest, size));
-      }
-    }
-  }
-
-  // Check that the source data hasn't been clobbered.
-  for (int i = 0; i < data_size; i++) {
-    CHECK(src_buffer[i] == to_non_zero(i));
-  }
-}
-
-
 typedef int (*F5)(void*, void*, void*, void*, void*);
 
 
 TEST(LoadAndStoreWithRepresentation) {
   // Allocate an executable page of memory.
   size_t actual_size;
   byte* buffer = static_cast<byte*>(v8::base::OS::Allocate(
       Assembler::kMinimalBufferSize, &actual_size, true));
   CHECK(buffer);
   Isolate* isolate = CcTest::i_isolate();
@@ skipping 73 matching lines @@
   masm->GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
 
   // Call the function from C++.
   F5 f = FUNCTION_CAST<F5>(code->entry());
   CHECK(!CALL_GENERATED_CODE(isolate, f, 0, 0, 0, 0, 0));
 }
 
 #undef __