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 33 matching lines @@
 DECLARE_FLAG(bool, use_osr);
 DECLARE_FLAG(int, stacktrace_every);
 DECLARE_FLAG(charp, stacktrace_filter);
 DECLARE_FLAG(int, deoptimize_every);
 DECLARE_FLAG(charp, deoptimize_filter);
 DECLARE_FLAG(bool, warn_on_javascript_compatibility);
 DEFINE_FLAG(bool, enable_simd_inline, true,
     "Enable inlining of SIMD related method calls.");
 DEFINE_FLAG(bool, source_lines, false, "Emit source line as assembly comment.");
 
+// Quick access to the locally defined isolate() method.
+#define I (isolate())
+
 // Assign locations to incoming arguments, i.e., values pushed above spill slots
 // with PushArgument.  Recursively allocates from outermost to innermost
 // environment.
 void CompilerDeoptInfo::AllocateIncomingParametersRecursive(
     Environment* env,
     intptr_t* stack_height) {
   if (env == NULL) return;
   AllocateIncomingParametersRecursive(env->outer(), stack_height);
   for (Environment::ShallowIterator it(env); !it.Done(); it.Advance()) {
     if (it.CurrentLocation().IsInvalid() &&
@@ skipping 1054 matching lines @@
     }
   }
   UNREACHABLE();
   return kNoRegister;
 }
 
 
 void FlowGraphCompiler::AllocateRegistersLocally(Instruction* instr) {
   ASSERT(!is_optimizing());
 
-  instr->InitializeLocationSummary(isolate(), false);  // Not optimizing.
+  instr->InitializeLocationSummary(I->current_zone(),
+                                   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