Replace our home-grown BitCast with bit_cast from Chrome/Google3.

src/x87/lithium-codegen-x87.cc

 // Copyright 2012 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/base/bits.h"
 #include "src/code-stubs.h"
@@ skipping 1890 matching lines @@
 }
 
 
 void LCodeGen::DoConstantS(LConstantS* instr) {
   __ Move(ToRegister(instr->result()), Immediate(instr->value()));
 }
 
 
 void LCodeGen::DoConstantD(LConstantD* instr) {
   double v = instr->value();
-  uint64_t int_val = BitCast<uint64_t, double>(v);
+  uint64_t int_val = bit_cast<uint64_t, double>(v);
   int32_t lower = static_cast<int32_t>(int_val);
   int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt));
   DCHECK(instr->result()->IsDoubleRegister());
 
   __ push(Immediate(upper));
   __ push(Immediate(lower));
   X87Register reg = ToX87Register(instr->result());
   X87Mov(reg, Operand(esp, 0));
   __ add(Operand(esp), Immediate(kDoubleSize));
 }
@@ skipping 2159 matching lines @@
       instr->key(),
       instr->hydrogen()->key()->representation(),
       FAST_DOUBLE_ELEMENTS,
       instr->base_offset());
 
   // Can't use SSE2 in the serializer
   if (instr->hydrogen()->IsConstantHoleStore()) {
     // This means we should store the (double) hole. No floating point
     // registers required.
     double nan_double = FixedDoubleArray::hole_nan_as_double();
-    uint64_t int_val = BitCast<uint64_t, double>(nan_double);
+    uint64_t int_val = bit_cast<uint64_t, double>(nan_double);
     int32_t lower = static_cast<int32_t>(int_val);
     int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt));
 
     __ mov(double_store_operand, Immediate(lower));
     Operand double_store_operand2 = BuildFastArrayOperand(
         instr->elements(),
         instr->key(),
         instr->hydrogen()->key()->representation(),
         FAST_DOUBLE_ELEMENTS,
         instr->base_offset() + kPointerSize);
@@ skipping 1601 matching lines @@
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X87