[intrinsics] Remove unused %_RegExpExec and %_NumberToString.

src/compiler/js-intrinsic-lowering.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/js-intrinsic-lowering.h"
 
 #include <stack>
 
 #include "src/code-factory.h"
 #include "src/compiler/access-builder.h"
@@ skipping 40 matching lines @@
     case Runtime::kInlineIsJSProxy:
       return ReduceIsInstanceType(node, JS_PROXY_TYPE);
     case Runtime::kInlineIsJSReceiver:
       return ReduceIsJSReceiver(node);
     case Runtime::kInlineIsSmi:
       return ReduceIsSmi(node);
     case Runtime::kInlineFixedArrayGet:
       return ReduceFixedArrayGet(node);
     case Runtime::kInlineFixedArraySet:
       return ReduceFixedArraySet(node);
-    case Runtime::kInlineRegExpExec:
-      return ReduceRegExpExec(node);
     case Runtime::kInlineSubString:
       return ReduceSubString(node);
     case Runtime::kInlineToInteger:
       return ReduceToInteger(node);
     case Runtime::kInlineToLength:
       return ReduceToLength(node);
     case Runtime::kInlineToNumber:
       return ReduceToNumber(node);
     case Runtime::kInlineToObject:
       return ReduceToObject(node);
@@ skipping 181 matching lines @@
   Node* effect = NodeProperties::GetEffectInput(node);
   Node* control = NodeProperties::GetControlInput(node);
   Node* store = (graph()->NewNode(
       simplified()->StoreElement(AccessBuilder::ForFixedArrayElement()), base,
       index, value, effect, control));
   ReplaceWithValue(node, value, store);
   return Changed(store);
 }
 
 
-Reduction JSIntrinsicLowering::ReduceRegExpExec(Node* node) {
-  return Change(node, CodeFactory::RegExpExec(isolate()), 4);
-}
-
-
 Reduction JSIntrinsicLowering::ReduceSubString(Node* node) {
   return Change(node, CodeFactory::SubString(isolate()), 3);
 }
 
 
 Reduction JSIntrinsicLowering::ReduceToInteger(Node* node) {
   NodeProperties::ChangeOp(node, javascript()->ToInteger());
   return Changed(node);
 }
 
@@ skipping 147 matching lines @@
   return jsgraph_->javascript();
 }
 
 SimplifiedOperatorBuilder* JSIntrinsicLowering::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8