Disentangle assembler from isolate.

src/compiler/arm64/code-generator-arm64.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/arm64/assembler-arm64-inl.h"
 #include "src/arm64/frames-arm64.h"
 #include "src/arm64/macro-assembler-arm64-inl.h"
 #include "src/compilation-info.h"
@@ skipping 1832 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) {
   frame->AlignFrame(16);
   CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
 
   if (descriptor->UseNativeStack() || descriptor->IsCFunctionCall()) {
     __ SetStackPointer(csp);
@@ skipping 345 matching lines @@
       padding_size -= kInstructionSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8