[builtins] Introduce proper Float64Tan operator.

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 12 matching lines @@
 JSIntrinsicLowering::JSIntrinsicLowering(Editor* editor, JSGraph* jsgraph,
                                          DeoptimizationMode mode)
     : AdvancedReducer(editor), jsgraph_(jsgraph), mode_(mode) {}
 
 Reduction JSIntrinsicLowering::Reduce(Node* node) {
   if (node->opcode() != IrOpcode::kJSCallRuntime) return NoChange();
   const Runtime::Function* const f =
       Runtime::FunctionForId(CallRuntimeParametersOf(node->op()).id());
   if (f->intrinsic_type != Runtime::IntrinsicType::INLINE) return NoChange();
   switch (f->function_id) {
-    case Runtime::kInlineConstructDouble:
-      return ReduceConstructDouble(node);
     case Runtime::kInlineCreateIterResultObject:
       return ReduceCreateIterResultObject(node);
     case Runtime::kInlineDeoptimizeNow:
       return ReduceDeoptimizeNow(node);
     case Runtime::kInlineDoubleHi:
       return ReduceDoubleHi(node);
     case Runtime::kInlineDoubleLo:
       return ReduceDoubleLo(node);
     case Runtime::kInlineGeneratorClose:
       return ReduceGeneratorClose(node);
@@ skipping 57 matching lines @@
 Reduction JSIntrinsicLowering::ReduceCreateIterResultObject(Node* node) {
   Node* const value = NodeProperties::GetValueInput(node, 0);
   Node* const done = NodeProperties::GetValueInput(node, 1);
   Node* const context = NodeProperties::GetContextInput(node);
   Node* const effect = NodeProperties::GetEffectInput(node);
   return Change(node, javascript()->CreateIterResultObject(), value, done,
                 context, effect);
 }
 
 
-Reduction JSIntrinsicLowering::ReduceConstructDouble(Node* node) {
-  Node* high = NodeProperties::GetValueInput(node, 0);
-  Node* low = NodeProperties::GetValueInput(node, 1);
-  Node* value =
-      graph()->NewNode(machine()->Float64InsertHighWord32(),
-                       graph()->NewNode(machine()->Float64InsertLowWord32(),
-                                        jsgraph()->Constant(0), low),
-                       high);
-  ReplaceWithValue(node, value);
-  return Replace(value);
-}
-
-
 Reduction JSIntrinsicLowering::ReduceDeoptimizeNow(Node* node) {
   if (mode() != kDeoptimizationEnabled) return NoChange();
   Node* const frame_state = NodeProperties::GetFrameStateInput(node, 0);
   Node* const effect = NodeProperties::GetEffectInput(node);
   Node* const control = NodeProperties::GetControlInput(node);
 
   // TODO(bmeurer): Move MergeControlToEnd() to the AdvancedReducer.
   Node* deoptimize =
       graph()->NewNode(common()->Deoptimize(DeoptimizeKind::kEager),
                        frame_state, effect, control);
@@ skipping 381 matching lines @@
 }
 
 
 SimplifiedOperatorBuilder* JSIntrinsicLowering::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8