Use a typed array for the irregexp stack.

runtime/vm/intermediate_language.h

 // 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 543 matching lines @@
   M(Float64x2OneArg)                                                           \
   M(ExtractNthOutput)                                                          \
   M(BinaryUint32Op)                                                            \
   M(ShiftUint32Op)                                                             \
   M(UnaryUint32Op)                                                             \
   M(BoxUint32)                                                                 \
   M(UnboxUint32)                                                               \
   M(BoxInt32)                                                                  \
   M(UnboxInt32)                                                                \
   M(UnboxedIntConverter)                                                       \
+  M(GrowRegExpStack)                                                           \
   M(Deoptimize)
 
 #define FOR_EACH_ABSTRACT_INSTRUCTION(M)                                       \
   M(BlockEntry)                                                                \
   M(BoxInteger)                                                                \
   M(UnboxInteger)                                                              \
   M(Comparison)                                                                \
   M(UnaryIntegerOp)                                                            \
   M(BinaryIntegerOp)                                                           \
 
@@ skipping 7212 matching lines @@
 
  private:
   const Representation from_representation_;
   const Representation to_representation_;
   bool is_truncating_;
 
   DISALLOW_COPY_AND_ASSIGN(UnboxedIntConverterInstr);
 };
 
 
+class GrowRegExpStackInstr : public TemplateDefinition<1, Throws> {
+ public:
+  explicit GrowRegExpStackInstr(Value* typed_data_cell) {
+    SetInputAt(0, typed_data_cell);
+  }
+
+  Value* typed_data_cell() const { return inputs_[0]; }
+
+  virtual bool CanDeoptimize() const { return MayThrow(); }
+  virtual EffectSet Effects() const { return EffectSet::None(); }
+
+  DECLARE_INSTRUCTION(GrowRegExpStack);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(GrowRegExpStackInstr);
+};
+
+
 #undef DECLARE_INSTRUCTION
 
 class Environment : public ZoneAllocated {
  public:
   // Iterate the non-NULL values in the innermost level of an environment.
   class ShallowIterator : public ValueObject {
    public:
     explicit ShallowIterator(Environment* environment)
         : environment_(environment), index_(0) { }
 
@@ skipping 231 matching lines @@
   LocationSummary* Name::MakeLocationSummary(Zone* zone, bool opt) const {    \
     UNIMPLEMENTED();                                                          \
     return NULL;                                                              \
   }                                                                           \
   void Name::EmitNativeCode(FlowGraphCompiler* compiler) { UNIMPLEMENTED(); }
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_