Support for multiple register values

runtime/vm/flow_graph.cc

Index: runtime/vm/flow_graph.cc
diff --git a/runtime/vm/flow_graph.cc b/runtime/vm/flow_graph.cc
index 98a774ba959d34490aafbb61b4990beaace9bcbb..7c7429a07ef5f029ead363bc213e6353a03afadd 100644
--- a/runtime/vm/flow_graph.cc
+++ b/runtime/vm/flow_graph.cc
@@ -115,7 +115,8 @@ void FlowGraph::InsertAfter(Instruction* prev,
                             Definition::UseKind use_kind) {
   if (use_kind == Definition::kValue) {
     ASSERT(instr->IsDefinition());
-    instr->AsDefinition()->set_ssa_temp_index(alloc_ssa_temp_index());
+    Definition* defn = instr->AsDefinition();
+    AllocateSSAIndexes(defn);

[srdjan, 2014/04/07 18:22:50]

AllocateSSAIndexes(instr->AsDefinition()) .. also below ?

[Cutch, 2014/04/08 15:56:16]

Done here and elsewhere.

   }
   instr->InsertAfter(prev);
   ASSERT(instr->env() == NULL);
@@ -129,7 +130,8 @@ Instruction* FlowGraph::AppendTo(Instruction* prev,
                                  Definition::UseKind use_kind) {
   if (use_kind == Definition::kValue) {
     ASSERT(instr->IsDefinition());
-    instr->AsDefinition()->set_ssa_temp_index(alloc_ssa_temp_index());
+    Definition* defn = instr->AsDefinition();
+    AllocateSSAIndexes(defn);
   }
   ASSERT(instr->env() == NULL);
   if (env != NULL) env->DeepCopyTo(instr);
@@ -716,7 +718,7 @@ void FlowGraph::Rename(GrowableArray<PhiInstr*>* live_phis,
     ASSERT(parameter_count() == inlining_parameters->length());
     for (intptr_t i = 0; i < parameter_count(); ++i) {
       Definition* defn = (*inlining_parameters)[i];
-      defn->set_ssa_temp_index(alloc_ssa_temp_index());  // New SSA temp.
+      AllocateSSAIndexes(defn);
       AddToInitialDefinitions(defn);
       env.Add(defn);
     }
@@ -926,7 +928,7 @@ void FlowGraph::RenameRecursive(BlockEntryInstr* block_entry,
         // Not a load, store, or constant.
         if (definition->is_used()) {
           // Assign fresh SSA temporary and update expression stack.
-          definition->set_ssa_temp_index(alloc_ssa_temp_index());
+          AllocateSSAIndexes(definition);
           env->Add(definition);
         }
       }