Disentangle assembler from isolate.

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

Index: src/compiler/arm/code-generator-arm.cc
diff --git a/src/compiler/arm/code-generator-arm.cc b/src/compiler/arm/code-generator-arm.cc
index 8a8b623b005314efd5994e781c58d8a187f62f9b..9bceb8de60b96146cfb3e036879e7a158f560a81 100644
--- a/src/compiler/arm/code-generator-arm.cc
+++ b/src/compiler/arm/code-generator-arm.cc
@@ -2281,7 +2281,9 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleDeoptimizerCall(
   // actual final call site and just bl'ing to it here, similar to what we do
   // in the lithium backend.
   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);
   __ CheckConstPool(false, false);
   return kSuccess;