VM: Fix more places with isolate embedded into unoptimized code.

runtime/vm/intermediate_language_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/dart_entry.h"
@@ skipping 2620 matching lines @@
   Label osr_entry_label_;
 };
 
 
 void CheckStackOverflowInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   CheckStackOverflowSlowPath* slow_path = new CheckStackOverflowSlowPath(this);
   compiler->AddSlowPathCode(slow_path);
 
   Register temp = locs()->temp(0).reg();
   // Generate stack overflow check.
-  __ LoadImmediate(
-      temp, Immediate(Isolate::Current()->stack_limit_address()), PP);
-  __ cmpq(RSP, Address(temp, 0));
+  if (compiler->is_optimizing()) {
+    __ LoadImmediate(
+        temp, Immediate(Isolate::Current()->stack_limit_address()), PP);
+    __ cmpq(RSP, Address(temp, 0));
+  } else {
+    __ LoadIsolate(temp);
+    __ cmpq(RSP, Address(temp, Isolate::stack_limit_offset()));
+  }
   __ j(BELOW_EQUAL, slow_path->entry_label());
   if (compiler->CanOSRFunction() && in_loop()) {
     // In unoptimized code check the usage counter to trigger OSR at loop
     // stack checks.  Use progressively higher thresholds for more deeply
     // nested loops to attempt to hit outer loops with OSR when possible.
     __ LoadObject(temp, compiler->parsed_function().function(), PP);
     int32_t threshold =
         FLAG_optimization_counter_threshold * (loop_depth() + 1);
     __ cmpl(FieldAddress(temp, Function::usage_counter_offset()),
             Immediate(threshold));
@@ skipping 3772 matching lines @@
   __ Drop(1);
   __ popq(result);
 }
 
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64