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

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/bootstrap.h"
 #include "vm/compiler.h"
 #include "vm/constant_propagator.h"
@@ skipping 2048 matching lines @@
     return NULL;
   }
   if ((constrained_type() != NULL) &&
       Type()->IsEqualTo(value()->definition()->Type())) {
     return value()->definition();
   }
   return this;
 }
 
 
+Instruction* CheckStackOverflowInstr::Canonicalize(FlowGraph* flow_graph) {
+  switch (kind_) {
+    case kFull:
+      return this;
+    case kOsrEntry:
+      // Don't need OSR entries in the optimized code.
+      return NULL;
+  }
+}
+
+
 bool LoadFieldInstr::IsImmutableLengthLoad() const {
   switch (recognized_kind()) {
     case MethodRecognizer::kObjectArrayLength:
     case MethodRecognizer::kImmutableArrayLength:
     case MethodRecognizer::kTypedDataLength:
     case MethodRecognizer::kStringBaseLength:
       return true;
     default:
       return false;
   }
@@ skipping 2280 matching lines @@
                      "native function '%s' (%" Pd " arguments) cannot be found",
                      native_name().ToCString(), function().NumParameters());
   }
   set_is_auto_scope(auto_setup_scope);
   set_native_c_function(native_function);
 }
 
 #undef __
 
 }  // namespace dart