Disentangle assembler from isolate.

src/compiler/mips64/code-generator-mips64.cc

 // Copyright 2014 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/compiler/code-generator.h"
 #include "src/compilation-info.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 2330 matching lines @@
     int deoptimization_id, SourcePosition pos) {
   DeoptimizeKind deoptimization_kind = GetDeoptimizationKind(deoptimization_id);
   DeoptimizeReason deoptimization_reason =
       GetDeoptimizationReason(deoptimization_id);
   Deoptimizer::BailoutType bailout_type =
       deoptimization_kind == DeoptimizeKind::kSoft ? Deoptimizer::SOFT
                                                    : Deoptimizer::EAGER;
   Address deopt_entry = Deoptimizer::GetDeoptimizationEntry(
       isolate(), deoptimization_id, bailout_type);
   if (deopt_entry == nullptr) return kTooManyDeoptimizationBailouts;
-  __ RecordDeoptReason(deoptimization_reason, pos, deoptimization_id);
+  if (isolate()->NeedsSourcePositionsForProfiling()) {
+    __ RecordDeoptReason(deoptimization_reason, pos, deoptimization_id);
+  }
   __ Call(deopt_entry, RelocInfo::RUNTIME_ENTRY);
   return kSuccess;
 }
 
 void CodeGenerator::FinishFrame(Frame* frame) {
   CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
 
   const RegList saves_fpu = descriptor->CalleeSavedFPRegisters();
   if (saves_fpu != 0) {
     int count = base::bits::CountPopulation32(saves_fpu);
@@ skipping 321 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8