Uncomment more vm tests on ARM (and some on MIPS too).

runtime/vm/intermediate_language_arm.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_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 1437 matching lines @@
     // instantiated type arguments, no proper instantiator needed.
     __ LoadImmediate(instantiator_reg,
                      Smi::RawValue(StubCode::kNoInstantiator));
   }
   __ Bind(&done);
   // instantiator_reg: instantiator or kNoInstantiator.
 }
 
 
 LocationSummary* AllocateContextInstr::MakeLocationSummary() const {
-  UNIMPLEMENTED();
-  return NULL;
+  const intptr_t kNumInputs = 0;
+  const intptr_t kNumTemps = 1;
+  LocationSummary* locs =
+      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
+  locs->set_temp(0, Location::RegisterLocation(R1));
+  locs->set_out(Location::RegisterLocation(R0));
+  return locs;
 }
 
 
 void AllocateContextInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  UNIMPLEMENTED();
+  ASSERT(locs()->temp(0).reg() == R1);
+  ASSERT(locs()->out().reg() == R0);
+
+  __ LoadImmediate(R1, num_context_variables());
+  const ExternalLabel label("alloc_context",
+                            StubCode::AllocateContextEntryPoint());
+  compiler->GenerateCall(token_pos(),
+                         &label,
+                         PcDescriptors::kOther,
+                         locs());
 }
 
 
 LocationSummary* CloneContextInstr::MakeLocationSummary() const {
   UNIMPLEMENTED();
   return NULL;
 }
 
 
 void CloneContextInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
@@ skipping 818 matching lines @@
                          &label,
                          PcDescriptors::kOther,
                          locs());
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM