js-inlining.h 2.71 KB
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// Copyright 2014 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.

#ifndef V8_COMPILER_JS_INLINING_H_
#define V8_COMPILER_JS_INLINING_H_

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#include "src/compiler/graph-reducer.h"
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#include "src/compiler/js-graph.h"
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namespace v8 {
namespace internal {
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class BytecodeOffset;
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class OptimizedCompilationInfo;
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namespace compiler {

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class SourcePositionTable;

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// The JSInliner provides the core graph inlining machinery. Note that this
// class only deals with the mechanics of how to inline one graph into another,
// heuristics that decide what and how much to inline are beyond its scope.
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class JSInliner final : public AdvancedReducer {
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 public:
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  JSInliner(Editor* editor, Zone* local_zone, OptimizedCompilationInfo* info,
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            JSGraph* jsgraph, JSHeapBroker* broker,
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            SourcePositionTable* source_positions)
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      : AdvancedReducer(editor),
        local_zone_(local_zone),
        info_(info),
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        jsgraph_(jsgraph),
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        broker_(broker),
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        source_positions_(source_positions) {}
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  const char* reducer_name() const override { return "JSInliner"; }

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  Reduction Reduce(Node* node) final { UNREACHABLE(); }
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  // Can be used by inlining heuristics or by testing code directly, without
  // using the above generic reducer interface of the inlining machinery.
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  Reduction ReduceJSCall(Node* node);
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 private:
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  Zone* zone() const { return local_zone_; }
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  CommonOperatorBuilder* common() const;
  JSOperatorBuilder* javascript() const;
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  SimplifiedOperatorBuilder* simplified() const;
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  Graph* graph() const;
  JSGraph* jsgraph() const { return jsgraph_; }
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  // TODO(neis): Make heap broker a component of JSGraph?
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  JSHeapBroker* broker() const { return broker_; }
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  Isolate* isolate() const { return jsgraph_->isolate(); }
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  Zone* const local_zone_;
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  OptimizedCompilationInfo* info_;
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  JSGraph* const jsgraph_;
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  JSHeapBroker* const broker_;
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  SourcePositionTable* const source_positions_;
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  base::Optional<SharedFunctionInfoRef> DetermineCallTarget(Node* node);
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  FeedbackCellRef DetermineCallContext(Node* node, Node** context_out);
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  FrameState CreateArtificialFrameState(
      Node* node, FrameState outer_frame_state, int parameter_count,
      BytecodeOffset bailout_id, FrameStateType frame_state_type,
      SharedFunctionInfoRef shared, Node* context = nullptr);
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  Reduction InlineCall(Node* call, Node* new_target, Node* context,
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                       Node* frame_state, StartNode start, Node* end,
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                       Node* exception_target,
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                       const NodeVector& uncaught_subcalls);
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};
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}  // namespace compiler
}  // namespace internal
}  // namespace v8
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#endif  // V8_COMPILER_JS_INLINING_H_