Isolate/Thread split: Isolate -> Zone for LocationSummary.

runtime/vm/flow_graph_compiler.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_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 1107 matching lines @@
     }
   }
   UNREACHABLE();
   return kNoRegister;
 }
 
 
 void FlowGraphCompiler::AllocateRegistersLocally(Instruction* instr) {
   ASSERT(!is_optimizing());
 
-  instr->InitializeLocationSummary(isolate(), false);  // Not optimizing.
+  instr->InitializeLocationSummary(isolate()->current_zone(),

[Ivan Posva, 2015/01/15 20:35:39]

In a lot of files we have added the following lines to get less visually
disturbing access to the isolate() field:
// Quick access to the locally defined isolate() method.
#define I (isolate())

[koda, 2015/01/15 21:29:11]

Done.

+                                   false);  // Not optimizing.
   LocationSummary* locs = instr->locs();
 
   bool blocked_registers[kNumberOfCpuRegisters];
 
   // Mark all available registers free.
   for (intptr_t i = 0; i < kNumberOfCpuRegisters; i++) {
     blocked_registers[i] = false;
   }
 
   // Mark all fixed input, temp and output registers as used.
@@ skipping 425 matching lines @@
     case kUnboxedMint:
       return mint_class();
     default:
       UNREACHABLE();
       return Class::ZoneHandle();
   }
 }
 
 
 }  // namespace dart