VM(RegExp): Allow OSR optimization of RegExp :matcher functions.

runtime/vm/intermediate_language_x64.cc

Index: runtime/vm/intermediate_language_x64.cc
diff --git a/runtime/vm/intermediate_language_x64.cc b/runtime/vm/intermediate_language_x64.cc
index b947742092ea4131014fc362e4f07c3fb82019ec..6cff06c7fa2b8ab5927f66dc255cc2e656731b75 100644
--- a/runtime/vm/intermediate_language_x64.cc
+++ b/runtime/vm/intermediate_language_x64.cc
@@ -6648,30 +6648,6 @@ void DebugStepCheckInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
 }
 
 
-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(RAX));
-  locs->set_out(0, Location::RegisterLocation(RAX));
-  return locs;
-}
-
-
-void GrowRegExpStackInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  const Register typed_data = locs()->in(0).reg();
-  const Register result = locs()->out(0).reg();
-  __ PushObject(Object::null_object());
-  __ pushq(typed_data);
-  compiler->GenerateRuntimeCall(TokenPosition::kNoSource, deopt_id(),
-                                kGrowRegExpStackRuntimeEntry, 1, locs());
-  __ Drop(1);
-  __ popq(result);
-}
-
-
 }  // namespace dart
 
 #undef __