Use a typed array for the irregexp stack.

runtime/vm/intermediate_language_mips.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_MIPS.
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/dart_entry.h"
@@ skipping 5572 matching lines @@
   ASSERT(!compiler->is_optimizing());
   StubCode* stub_code = compiler->isolate()->stub_code();
   const ExternalLabel label(stub_code->DebugStepCheckEntryPoint());
   compiler->GenerateCall(token_pos(), &label, stub_kind_, locs());
 #if defined(DEBUG)
   __ LoadImmediate(S4, kInvalidObjectPointer);
   __ LoadImmediate(S5, kInvalidObjectPointer);
 #endif
 }
 
+
+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(T0));
+  locs->set_out(0, Location::RegisterLocation(T0));
+  return locs;
+}
+
+
+void GrowRegExpStackInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  const Register typed_data = locs()->in(0).reg();
+  const Register result = locs()->out(0).reg();
+  __ TraceSimMsg("GrowRegExpStackInstr");
+  __ addiu(SP, SP, Immediate(-2 * kWordSize));
+  __ LoadObject(TMP, Object::null_object());
+  __ sw(TMP, Address(SP, 1 * kWordSize));
+  __ sw(typed_data, Address(SP, 0 * kWordSize));
+  compiler->GenerateRuntimeCall(Scanner::kNoSourcePos,  // No token position.
+                                deopt_id(),
+                                kGrowRegExpStackRuntimeEntry,
+                                1,
+                                locs());
+  __ lw(result, Address(SP, 1 * kWordSize));
+  __ addiu(SP, SP, Immediate(2 * kWordSize));
+}
+
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS