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

runtime/vm/constant_propagator.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/constant_propagator.h"
 
 #include "vm/bit_vector.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/flow_graph_compiler.h"
 #include "vm/flow_graph_range_analysis.h"
@@ skipping 250 matching lines @@
 }
 
 
 void ConstantPropagator::VisitCheckArrayBound(CheckArrayBoundInstr* instr) {}
 
 
 void ConstantPropagator::VisitDeoptimize(DeoptimizeInstr* instr) {
   // TODO(vegorov) remove all code after DeoptimizeInstr as dead.
 }
 
-void ConstantPropagator::VisitGrowRegExpStack(GrowRegExpStackInstr* instr) {}
 
 Definition* ConstantPropagator::UnwrapPhi(Definition* defn) {
   if (defn->IsPhi()) {
     JoinEntryInstr* block = defn->AsPhi()->block();
 
     Definition* input = NULL;
     for (intptr_t i = 0; i < defn->InputCount(); ++i) {
       if (reachable_->Contains(block->PredecessorAt(i)->preorder_number())) {
         if (input == NULL) {
           input = defn->InputAt(i)->definition();
@@ skipping 1453 matching lines @@
   GrowableArray<BitVector*> dominance_frontier;
   graph_->ComputeDominators(&dominance_frontier);
 
   if (FLAG_trace_constant_propagation &&
       FlowGraphPrinter::ShouldPrint(graph_->function())) {
     FlowGraphPrinter::PrintGraph("After CP", graph_);
   }
 }
 
 }  // namespace dart