VM(RegExp): Allow OSR optimization of RegExp :matcher functions.

runtime/vm/intermediate_language_arm64.cc

 // Copyright (c) 2014, 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_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/compiler.h"
@@ skipping 5935 matching lines @@
 
 
 void DebugStepCheckInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ASSERT(!compiler->is_optimizing());
   __ BranchLinkPatchable(*StubCode::DebugStepCheck_entry());
   compiler->AddCurrentDescriptor(stub_kind_, deopt_id_, token_pos());
   compiler->RecordSafepoint(locs());
 }
 
 
-LocationSummary* GrowRegExpStackInstr::MakeLocationSummary(Zone* zone,
-                                                           bool opt) const {
-  const intptr_t kNumInputs = 1;
-  const intptr_t kNumTemps = 0;
-  LocationSummary* locs = new (zone)
-      LocationSummary(zone, kNumInputs, kNumTemps, LocationSummary::kCall);
-  locs->set_in(0, Location::RegisterLocation(R0));
-  locs->set_out(0, Location::RegisterLocation(R0));
-  return locs;
-}
-
-
-void GrowRegExpStackInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  const Register typed_data = locs()->in(0).reg();
-  const Register result = locs()->out(0).reg();
-  __ PushObject(Object::null_object());
-  __ Push(typed_data);
-  compiler->GenerateRuntimeCall(TokenPosition::kNoSource, deopt_id(),
-                                kGrowRegExpStackRuntimeEntry, 1, locs());
-  __ Drop(1);
-  __ Pop(result);
-}
-
-
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64