Use a typed array for the irregexp stack.

runtime/vm/intermediate_language_mips.cc

Index: runtime/vm/intermediate_language_mips.cc
diff --git a/runtime/vm/intermediate_language_mips.cc b/runtime/vm/intermediate_language_mips.cc
index 9ee2f40fd2c48943c5df5f2a90994c558ff3e977..9ad50ae70d59e7b43f6cabda08289acc59fc203f 100644
--- a/runtime/vm/intermediate_language_mips.cc
+++ b/runtime/vm/intermediate_language_mips.cc
@@ -5590,6 +5590,37 @@ void DebugStepCheckInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 #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