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

runtime/vm/flow_graph_allocator.cc

Index: runtime/vm/flow_graph_allocator.cc
===================================================================
--- runtime/vm/flow_graph_allocator.cc	(revision 42919)
+++ runtime/vm/flow_graph_allocator.cc	(working copy)
@@ -164,7 +164,8 @@
       Instruction* current = it.Current();
 
       // Initialize location summary for instruction.
-      current->InitializeLocationSummary(Isolate::Current(), true);  // opt
+      current->InitializeLocationSummary(Isolate::Current()->current_zone(),

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

SSALivenessAnalysis or even better its base class LivenessAnalysis should have a
isolate field for avoiding the Isolate::Current() call. Alternatively if the
isolate is not needed, then a zone field would be appropriate.

Probably the same for the other calls to Isolate::Current() in this file.

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

Done.

+                                         true);  // opt
       LocationSummary* locs = current->locs();
 #if DEBUG
       locs->DiscoverWritableInputs();