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

runtime/vm/intermediate_language_arm64.cc

Index: runtime/vm/intermediate_language_arm64.cc
diff --git a/runtime/vm/intermediate_language_arm64.cc b/runtime/vm/intermediate_language_arm64.cc
index 45befb721810006fcb8b419afdf29834d5160931..2e53e4458b22f3b23835da759c79f951bfe8f166 100644
--- a/runtime/vm/intermediate_language_arm64.cc
+++ b/runtime/vm/intermediate_language_arm64.cc
@@ -5953,30 +5953,6 @@ 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(R0));
-  locs->set_out(0, Location::RegisterLocation(R0));
-  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());
-  __ Push(typed_data);
-  compiler->GenerateRuntimeCall(TokenPosition::kNoSource, deopt_id(),
-                                kGrowRegExpStackRuntimeEntry, 1, locs());
-  __ Drop(1);
-  __ Pop(result);
-}
-
-
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64