Another fix in register allocation where th eimplicit assumption is that numebr of CPU registers is…

runtime/vm/flow_graph_allocator.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/flow_graph_allocator.h"
 
 #include "vm/bit_vector.h"
 #include "vm/intermediate_language.h"
 #include "vm/il_printer.h"
 #include "vm/flow_graph.h"
@@ skipping 1985 matching lines @@
 
   // We have a very good candidate (either hinted to us or completely free).
   // If we are in a loop try to reduce number of moves on the back edge by
   // searching for a candidate that does not interfere with phis on the back
   // edge.
   BlockInfo* loop_header = BlockInfoAt(unallocated->Start())->loop_header();
   if ((unallocated->vreg() >= 0) &&
       (loop_header != NULL) &&
       (free_until >= loop_header->last_block()->end_pos()) &&
       loop_header->backedge_interference()->Contains(unallocated->vreg())) {
-    ASSERT(static_cast<intptr_t>(kNumberOfFpuRegisters) <=
-           kNumberOfCpuRegisters);
-    bool used_on_backedge[kNumberOfCpuRegisters] = { false };
+    GrowableArray<bool> used_on_backedge(number_of_registers_);
+    for (intptr_t i = 0; i < number_of_registers_; i++) {
+      used_on_backedge.Add(false);
+    }
 
     for (PhiIterator it(loop_header->entry()->AsJoinEntry());
          !it.Done();
          it.Advance()) {
       // TODO(johnmccutchan): Fix handling of PhiInstr with PairLocation.
       PhiInstr* phi = it.Current();
       ASSERT(phi->is_alive());
       const intptr_t phi_vreg = phi->ssa_temp_index();
       LiveRange* range = GetLiveRange(phi_vreg);
       if (range->assigned_location().kind() == register_kind_) {
@@ skipping 767 matching lines @@
     OS::Print("-- [after ssa allocator] ir [%s] -------------\n",
               function.ToFullyQualifiedCString());
     FlowGraphPrinter printer(flow_graph_, true);
     printer.PrintBlocks();
     OS::Print("----------------------------------------------\n");
   }
 }
 
 
 }  // namespace dart