a25a55e874
This adds a decorator to add the wasm bytecode offset as origin for graph nodes and emits a little table that maps lines in the generated wasm assembly listing to the corresponding bytecode offset. Change-Id: Ibc0431a122e543f95173ffc3b1b4ca461e372f28 Reviewed-on: https://chromium-review.googlesource.com/1071290 Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Commit-Queue: Stephan Herhut <herhut@chromium.org> Cr-Commit-Position: refs/heads/master@{#53484}
89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/compiler/node-origin-table.h"
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#include "src/compiler/graph.h"
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#include "src/compiler/node-aux-data.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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void NodeOrigin::PrintJson(std::ostream& out) const {
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out << "{ ";
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switch (origin_kind_) {
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case kGraphNode:
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out << "\"nodeId\" : ";
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break;
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case kWasmBytecode:
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out << "\"bytecodePosition\" : ";
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break;
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}
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out << created_from();
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out << ", \"reducer\" : \"" << reducer_name() << "\"";
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out << ", \"phase\" : \"" << phase_name() << "\"";
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out << "}";
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}
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class NodeOriginTable::Decorator final : public GraphDecorator {
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public:
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explicit Decorator(NodeOriginTable* origins) : origins_(origins) {}
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void Decorate(Node* node) final {
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origins_->SetNodeOrigin(node, origins_->current_origin_);
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}
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private:
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NodeOriginTable* origins_;
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};
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NodeOriginTable::NodeOriginTable(Graph* graph)
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: graph_(graph),
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decorator_(nullptr),
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current_origin_(NodeOrigin::Unknown()),
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current_phase_name_("unknown"),
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table_(graph->zone()) {}
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void NodeOriginTable::AddDecorator() {
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DCHECK_NULL(decorator_);
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decorator_ = new (graph_->zone()) Decorator(this);
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graph_->AddDecorator(decorator_);
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}
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void NodeOriginTable::RemoveDecorator() {
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DCHECK_NOT_NULL(decorator_);
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graph_->RemoveDecorator(decorator_);
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decorator_ = nullptr;
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}
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NodeOrigin NodeOriginTable::GetNodeOrigin(Node* node) const {
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return table_.Get(node);
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}
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void NodeOriginTable::SetNodeOrigin(Node* node, const NodeOrigin& no) {
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table_.Set(node, no);
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}
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void NodeOriginTable::PrintJson(std::ostream& os) const {
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os << "{";
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bool needs_comma = false;
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for (auto i : table_) {
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NodeOrigin no = i.second;
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if (no.IsKnown()) {
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if (needs_comma) {
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os << ",";
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}
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os << "\"" << i.first << "\""
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<< ": ";
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no.PrintJson(os);
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needs_comma = true;
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}
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}
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os << "}";
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}
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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