Port and integrate the irregexp engine from V8

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 4a69d11f31833d546a8fcb0ff3ab3cc74aa30aac..55007d07ca85b532cb7777f537fe043b403a6044 100644
--- a/runtime/vm/intermediate_language_mips.cc
+++ b/runtime/vm/intermediate_language_mips.cc
@@ -1260,6 +1260,30 @@ void LoadIndexedInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
+CompileType LoadCodeUnitsInstr::ComputeType() const {
+  UNIMPLEMENTED();
+  return CompileType::Dynamic();
+}
+
+
+Representation LoadCodeUnitsInstr::representation() const {
+  UNIMPLEMENTED();
+  return kTagged;
+}
+
+
+LocationSummary* LoadCodeUnitsInstr::MakeLocationSummary(Isolate* isolate,
+                                                         bool opt) const {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+void LoadCodeUnitsInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  UNIMPLEMENTED();
+}
+
+
 Representation StoreIndexedInstr::RequiredInputRepresentation(
     intptr_t idx) const {
   // Array can be a Dart object or a pointer to external data.
@@ -3657,6 +3681,19 @@ void MathUnaryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
+LocationSummary* CaseInsensitiveCompareUC16Instr::MakeLocationSummary(
+    Isolate* isolate, bool opt) const {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+void CaseInsensitiveCompareUC16Instr::EmitNativeCode(
+    FlowGraphCompiler* compiler) {
+  UNIMPLEMENTED();
+}
+
+
 LocationSummary* MathMinMaxInstr::MakeLocationSummary(Isolate* isolate,
                                                       bool opt) const {
   if (result_cid() == kDoubleCid) {
@@ -4747,6 +4784,11 @@ void GraphEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
+void IndirectEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  UNIMPLEMENTED();
+}
+
+
 LocationSummary* GotoInstr::MakeLocationSummary(Isolate* isolate,
                                                 bool opt) const {
   return new(isolate) LocationSummary(isolate, 0, 0, LocationSummary::kNoCall);
@@ -4780,6 +4822,27 @@ void GotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
+LocationSummary* IndirectGotoInstr::MakeLocationSummary(Isolate* isolate,
+                                                        bool opt) const {
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps = 1;
+
+  LocationSummary* locs = new(isolate) LocationSummary(
+        isolate, kNumInputs, kNumTemps, LocationSummary::kNoCall);
+
+  locs->set_in(0, Location::RequiresRegister());
+  locs->set_temp(0, Location::RequiresRegister());
+
+  return locs;
+}
+
+
+void IndirectGotoInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  // TODO(jgruber): Implement.
+  UNIMPLEMENTED();
+}
+
+
 LocationSummary* CurrentContextInstr::MakeLocationSummary(Isolate* isolate,
                                                           bool opt) const {
   return LocationSummary::Make(isolate,