Disentangle assembler from isolate.

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

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index 80b407c6ecfa8390132000e8b4c980d37804e574..0a349fc3543b7af25e0dae1a8650a88a461c7094 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -2201,7 +2201,9 @@ 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);
   return kSuccess;
 }