Port and integrate the irregexp engine from V8

runtime/vm/il_printer.cc

Index: runtime/vm/il_printer.cc
diff --git a/runtime/vm/il_printer.cc b/runtime/vm/il_printer.cc
index e9eea97c1bb91a3f9b0dd57c04f97c0c674475c2..54b6a349156c7c0b2defb1092141ad34a75b8fab 100644
--- a/runtime/vm/il_printer.cc
+++ b/runtime/vm/il_printer.cc
@@ -580,6 +580,18 @@ void MathUnaryInstr::PrintOperandsTo(BufferFormatter* f) const {
 }
 
 
+void CaseInsensitiveCompareUC16Instr::PrintOperandsTo(
+    BufferFormatter* f) const {
+  str()->PrintTo(f);
+  f->Print(", ");
+  lhs_index()->PrintTo(f);
+  f->Print(", ");
+  rhs_index()->PrintTo(f);
+  f->Print(", ");
+  length()->PrintTo(f);
+}
+
+
 void MergedMathInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("'%s', ", MergedMathInstr::KindToCString(kind()));
   Definition::PrintOperandsTo(f);
@@ -934,6 +946,34 @@ void JoinEntryInstr::PrintTo(BufferFormatter* f) const {
 }
 
 
+void IndirectEntryInstr::PrintTo(BufferFormatter* f) const {
+  if (try_index() != CatchClauseNode::kInvalidTryIndex) {
+    f->Print("B%" Pd "[join indirect try_idx %" Pd "]:%" Pd " pred(",
+             block_id(), try_index(), GetDeoptId());
+  } else {
+    f->Print("B%" Pd "[join indirect]:%" Pd " pred(", block_id(), GetDeoptId());
+  }
+  for (intptr_t i = 0; i < predecessors_.length(); ++i) {
+    if (i > 0) f->Print(", ");
+    f->Print("B%" Pd, predecessors_[i]->block_id());
+  }
+  f->Print(")");
+  if (phis_ != NULL) {
+    f->Print(" {");
+    for (intptr_t i = 0; i < phis_->length(); ++i) {
+      if ((*phis_)[i] == NULL) continue;
+      f->Print("\n      ");
+      (*phis_)[i]->PrintTo(f);
+    }
+    f->Print("\n}");
+  }
+  if (HasParallelMove()) {
+    f->Print(" ");
+    parallel_move()->PrintTo(f);
+  }
+}
+
+
 static const char *RepresentationToCString(Representation rep) {
   switch (rep) {
     case kTagged:
@@ -1076,6 +1116,17 @@ void GotoInstr::PrintTo(BufferFormatter* f) const {
 }
 
 
+void IndirectGotoInstr::PrintTo(BufferFormatter* f) const {
+  if (GetDeoptId() != Isolate::kNoDeoptId) {
+    f->Print("igoto:%" Pd "(", GetDeoptId());
+  } else {
+    f->Print("igoto:(");
+  }
+  offset_from_start_->PrintTo(f);
+  f->Print(")");
+}
+
+
 void BranchInstr::PrintTo(BufferFormatter* f) const {
   f->Print("%s ", DebugName());
   f->Print("if ");