Teaches the register allocator about a second assembler temporary.

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/cha.h"
 #include "vm/dart_entry.h"
@@ skipping 935 matching lines @@
     blocked_registers[locs->out(0).reg()] = true;
   }
 
   // Do not allocate known registers.
   blocked_registers[CTX] = true;
   blocked_registers[SPREG] = true;
   blocked_registers[FPREG] = true;
   if (TMP != kNoRegister) {
     blocked_registers[TMP] = true;
   }
+  if (TMP2 != kNoRegister) {
+    blocked_registers[TMP2] = true;
+  }
   if (PP != kNoRegister) {
     blocked_registers[PP] = true;
   }
 
   // Block all non-free registers.
   for (intptr_t i = 0; i < kFirstFreeCpuRegister; i++) {
     blocked_registers[i] = true;
   }
   for (intptr_t i = kLastFreeCpuRegister + 1; i < kNumberOfCpuRegisters; i++) {
     blocked_registers[i] = true;
@@ skipping 317 matching lines @@
 
   for (int i = 0; i < len; i++) {
     sorted->Add(CidTarget(ic_data.GetReceiverClassIdAt(i),
                           &Function::ZoneHandle(ic_data.GetTargetAt(i)),
                           ic_data.GetCountAt(i)));
   }
   sorted->Sort(HighestCountFirst);
 }
 
 }  // namespace dart