Avoid accessing Isolate in source position logging.

src/crankshaft/s390/lithium-codegen-s390.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/crankshaft/s390/lithium-codegen-s390.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 37 matching lines @@
   FrameScope frame_scope(masm_, StackFrame::NONE);
 
   return GeneratePrologue() && GenerateBody() && GenerateDeferredCode() &&
          GenerateJumpTable() && GenerateSafepointTable();
 }
 
 void LCodeGen::FinishCode(Handle<Code> code) {
   DCHECK(is_done());
   code->set_stack_slots(GetTotalFrameSlotCount());
   code->set_safepoint_table_offset(safepoints_.GetCodeOffset());
-  Handle<ByteArray> source_positions =
-      source_position_table_builder_.ToSourcePositionTable();
-  code->set_source_position_table(*source_positions);
   PopulateDeoptimizationData(code);
 }
 
 void LCodeGen::SaveCallerDoubles() {
   DCHECK(info()->saves_caller_doubles());
   DCHECK(NeedsEagerFrame());
   Comment(";;; Save clobbered callee double registers");
   int count = 0;
   BitVector* doubles = chunk()->allocated_double_registers();
   BitVector::Iterator save_iterator(doubles);
@@ skipping 5597 matching lines @@
   __ LoadP(result,
            FieldMemOperand(scratch, FixedArray::kHeaderSize - kPointerSize));
   __ bind(deferred->exit());
   __ bind(&done);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8