Disentangle assembler from isolate.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index 4b7c85de56b7af2cff2fe45f63f54dabdc2dc6f7..2f8a74c00c4ab8098e6203d68642f8f4e65fed92 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -1850,7 +1850,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleDeoptimizerCall(
   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;
 }