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v8/test/cctest/compiler/test-node-algorithm.cc
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Review URL: https://codereview.chromium.org/426233002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-07-30 13:54:45 +00:00

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// Copyright 2013 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 <vector>
#include "src/v8.h"
#include "graph-tester.h"
#include "src/compiler/common-operator.h"
#include "src/compiler/generic-node.h"
#include "src/compiler/generic-node-inl.h"
#include "src/compiler/graph.h"
#include "src/compiler/graph-inl.h"
#include "src/compiler/graph-visualizer.h"
#include "src/compiler/operator.h"
using namespace v8::internal;
using namespace v8::internal::compiler;
static SimpleOperator dummy_operator(IrOpcode::kParameter, Operator::kNoWrite,
0, 0, "dummy");
class PreNodeVisitor : public NullNodeVisitor {
public:
GenericGraphVisit::Control Pre(Node* node) {
printf("NODE ID: %d\n", node->id());
nodes_.push_back(node);
return GenericGraphVisit::CONTINUE;
}
std::vector<Node*> nodes_;
};
class PostNodeVisitor : public NullNodeVisitor {
public:
GenericGraphVisit::Control Post(Node* node) {
printf("NODE ID: %d\n", node->id());
nodes_.push_back(node);
return GenericGraphVisit::CONTINUE;
}
std::vector<Node*> nodes_;
};
TEST(TestUseNodeVisitEmpty) {
GraphWithStartNodeTester graph;
PreNodeVisitor node_visitor;
graph.VisitNodeUsesFromStart(&node_visitor);
CHECK_EQ(1, node_visitor.nodes_.size());
}
TEST(TestUseNodePreOrderVisitSimple) {
GraphWithStartNodeTester graph;
Node* n2 = graph.NewNode(&dummy_operator, graph.start());
Node* n3 = graph.NewNode(&dummy_operator, n2);
Node* n4 = graph.NewNode(&dummy_operator, n2, n3);
Node* n5 = graph.NewNode(&dummy_operator, n4, n2);
graph.SetEnd(n5);
PreNodeVisitor node_visitor;
graph.VisitNodeUsesFromStart(&node_visitor);
CHECK_EQ(5, node_visitor.nodes_.size());
CHECK(graph.start()->id() == node_visitor.nodes_[0]->id());
CHECK(n2->id() == node_visitor.nodes_[1]->id());
CHECK(n3->id() == node_visitor.nodes_[2]->id());
CHECK(n4->id() == node_visitor.nodes_[3]->id());
CHECK(n5->id() == node_visitor.nodes_[4]->id());
}
TEST(TestInputNodePreOrderVisitSimple) {
GraphWithStartNodeTester graph;
Node* n2 = graph.NewNode(&dummy_operator, graph.start());
Node* n3 = graph.NewNode(&dummy_operator, n2);
Node* n4 = graph.NewNode(&dummy_operator, n2, n3);
Node* n5 = graph.NewNode(&dummy_operator, n4, n2);
graph.SetEnd(n5);
PreNodeVisitor node_visitor;
graph.VisitNodeInputsFromEnd(&node_visitor);
CHECK_EQ(5, node_visitor.nodes_.size());
CHECK(n5->id() == node_visitor.nodes_[0]->id());
CHECK(n4->id() == node_visitor.nodes_[1]->id());
CHECK(n2->id() == node_visitor.nodes_[2]->id());
CHECK(graph.start()->id() == node_visitor.nodes_[3]->id());
CHECK(n3->id() == node_visitor.nodes_[4]->id());
}
TEST(TestUseNodePostOrderVisitSimple) {
GraphWithStartNodeTester graph;
Node* n2 = graph.NewNode(&dummy_operator, graph.start());
Node* n3 = graph.NewNode(&dummy_operator, graph.start());
Node* n4 = graph.NewNode(&dummy_operator, n2);
Node* n5 = graph.NewNode(&dummy_operator, n2);
Node* n6 = graph.NewNode(&dummy_operator, n2);
Node* n7 = graph.NewNode(&dummy_operator, n3);
Node* end_dependencies[4] = {n4, n5, n6, n7};
Node* n8 = graph.NewNode(&dummy_operator, 4, end_dependencies);
graph.SetEnd(n8);
PostNodeVisitor node_visitor;
graph.VisitNodeUsesFromStart(&node_visitor);
CHECK_EQ(8, node_visitor.nodes_.size());
CHECK(graph.end()->id() == node_visitor.nodes_[0]->id());
CHECK(n4->id() == node_visitor.nodes_[1]->id());
CHECK(n5->id() == node_visitor.nodes_[2]->id());
CHECK(n6->id() == node_visitor.nodes_[3]->id());
CHECK(n2->id() == node_visitor.nodes_[4]->id());
CHECK(n7->id() == node_visitor.nodes_[5]->id());
CHECK(n3->id() == node_visitor.nodes_[6]->id());
CHECK(graph.start()->id() == node_visitor.nodes_[7]->id());
}
TEST(TestUseNodePostOrderVisitLong) {
GraphWithStartNodeTester graph;
Node* n2 = graph.NewNode(&dummy_operator, graph.start());
Node* n3 = graph.NewNode(&dummy_operator, graph.start());
Node* n4 = graph.NewNode(&dummy_operator, n2);
Node* n5 = graph.NewNode(&dummy_operator, n2);
Node* n6 = graph.NewNode(&dummy_operator, n3);
Node* n7 = graph.NewNode(&dummy_operator, n3);
Node* n8 = graph.NewNode(&dummy_operator, n5);
Node* n9 = graph.NewNode(&dummy_operator, n5);
Node* n10 = graph.NewNode(&dummy_operator, n9);
Node* n11 = graph.NewNode(&dummy_operator, n9);
Node* end_dependencies[6] = {n4, n8, n10, n11, n6, n7};
Node* n12 = graph.NewNode(&dummy_operator, 6, end_dependencies);
graph.SetEnd(n12);
PostNodeVisitor node_visitor;
graph.VisitNodeUsesFromStart(&node_visitor);
CHECK_EQ(12, node_visitor.nodes_.size());
CHECK(graph.end()->id() == node_visitor.nodes_[0]->id());
CHECK(n4->id() == node_visitor.nodes_[1]->id());
CHECK(n8->id() == node_visitor.nodes_[2]->id());
CHECK(n10->id() == node_visitor.nodes_[3]->id());
CHECK(n11->id() == node_visitor.nodes_[4]->id());
CHECK(n9->id() == node_visitor.nodes_[5]->id());
CHECK(n5->id() == node_visitor.nodes_[6]->id());
CHECK(n2->id() == node_visitor.nodes_[7]->id());
CHECK(n6->id() == node_visitor.nodes_[8]->id());
CHECK(n7->id() == node_visitor.nodes_[9]->id());
CHECK(n3->id() == node_visitor.nodes_[10]->id());
CHECK(graph.start()->id() == node_visitor.nodes_[11]->id());
}
TEST(TestUseNodePreOrderVisitCycle) {
GraphWithStartNodeTester graph;
Node* n0 = graph.start_node();
Node* n1 = graph.NewNode(&dummy_operator, n0);
Node* n2 = graph.NewNode(&dummy_operator, n1);
n0->AppendInput(graph.main_zone(), n2);
graph.SetStart(n0);
graph.SetEnd(n2);
PreNodeVisitor node_visitor;
graph.VisitNodeUsesFromStart(&node_visitor);
CHECK_EQ(3, node_visitor.nodes_.size());
CHECK(n0->id() == node_visitor.nodes_[0]->id());
CHECK(n1->id() == node_visitor.nodes_[1]->id());
CHECK(n2->id() == node_visitor.nodes_[2]->id());
}
struct ReenterNodeVisitor : NullNodeVisitor {
GenericGraphVisit::Control Pre(Node* node) {
printf("[%d] PRE NODE: %d\n", static_cast<int>(nodes_.size()), node->id());
nodes_.push_back(node->id());
int size = nodes_.size();
switch (node->id()) {
case 0:
return size < 6 ? GenericGraphVisit::REENTER : GenericGraphVisit::SKIP;
case 1:
return size < 4 ? GenericGraphVisit::DEFER
: GenericGraphVisit::CONTINUE;
default:
return GenericGraphVisit::REENTER;
}
}
GenericGraphVisit::Control Post(Node* node) {
printf("[%d] POST NODE: %d\n", static_cast<int>(nodes_.size()), node->id());
nodes_.push_back(-node->id());
return node->id() == 4 ? GenericGraphVisit::REENTER
: GenericGraphVisit::CONTINUE;
}
void PreEdge(Node* from, int index, Node* to) {
printf("[%d] PRE EDGE: %d-%d\n", static_cast<int>(edges_.size()),
from->id(), to->id());
edges_.push_back(std::make_pair(from->id(), to->id()));
}
void PostEdge(Node* from, int index, Node* to) {
printf("[%d] POST EDGE: %d-%d\n", static_cast<int>(edges_.size()),
from->id(), to->id());
edges_.push_back(std::make_pair(-from->id(), -to->id()));
}
std::vector<int> nodes_;
std::vector<std::pair<int, int> > edges_;
};
TEST(TestUseNodeReenterVisit) {
GraphWithStartNodeTester graph;
Node* n0 = graph.start_node();
Node* n1 = graph.NewNode(&dummy_operator, n0);
Node* n2 = graph.NewNode(&dummy_operator, n0);
Node* n3 = graph.NewNode(&dummy_operator, n2);
Node* n4 = graph.NewNode(&dummy_operator, n0);
Node* n5 = graph.NewNode(&dummy_operator, n4);
n0->AppendInput(graph.main_zone(), n3);
graph.SetStart(n0);
graph.SetEnd(n5);
ReenterNodeVisitor visitor;
graph.VisitNodeUsesFromStart(&visitor);
CHECK_EQ(22, visitor.nodes_.size());
CHECK_EQ(24, visitor.edges_.size());
CHECK(n0->id() == visitor.nodes_[0]);
CHECK(n0->id() == visitor.edges_[0].first);
CHECK(n1->id() == visitor.edges_[0].second);
CHECK(n1->id() == visitor.nodes_[1]);
// N1 is deferred.
CHECK(-n1->id() == visitor.edges_[1].second);
CHECK(-n0->id() == visitor.edges_[1].first);
CHECK(n0->id() == visitor.edges_[2].first);
CHECK(n2->id() == visitor.edges_[2].second);
CHECK(n2->id() == visitor.nodes_[2]);
CHECK(n2->id() == visitor.edges_[3].first);
CHECK(n3->id() == visitor.edges_[3].second);
CHECK(n3->id() == visitor.nodes_[3]);
// Circle back to N0, which we may reenter for now.
CHECK(n3->id() == visitor.edges_[4].first);
CHECK(n0->id() == visitor.edges_[4].second);
CHECK(n0->id() == visitor.nodes_[4]);
CHECK(n0->id() == visitor.edges_[5].first);
CHECK(n1->id() == visitor.edges_[5].second);
CHECK(n1->id() == visitor.nodes_[5]);
// This time N1 is no longer deferred.
CHECK(-n1->id() == visitor.nodes_[6]);
CHECK(-n1->id() == visitor.edges_[6].second);
CHECK(-n0->id() == visitor.edges_[6].first);
CHECK(n0->id() == visitor.edges_[7].first);
CHECK(n2->id() == visitor.edges_[7].second);
CHECK(n2->id() == visitor.nodes_[7]);
CHECK(n2->id() == visitor.edges_[8].first);
CHECK(n3->id() == visitor.edges_[8].second);
CHECK(n3->id() == visitor.nodes_[8]);
CHECK(n3->id() == visitor.edges_[9].first);
CHECK(n0->id() == visitor.edges_[9].second);
CHECK(n0->id() == visitor.nodes_[9]);
// This time we break at N0 and skip it.
CHECK(-n0->id() == visitor.edges_[10].second);
CHECK(-n3->id() == visitor.edges_[10].first);
CHECK(-n3->id() == visitor.nodes_[10]);
CHECK(-n3->id() == visitor.edges_[11].second);
CHECK(-n2->id() == visitor.edges_[11].first);
CHECK(-n2->id() == visitor.nodes_[11]);
CHECK(-n2->id() == visitor.edges_[12].second);
CHECK(-n0->id() == visitor.edges_[12].first);
CHECK(n0->id() == visitor.edges_[13].first);
CHECK(n4->id() == visitor.edges_[13].second);
CHECK(n4->id() == visitor.nodes_[12]);
CHECK(n4->id() == visitor.edges_[14].first);
CHECK(n5->id() == visitor.edges_[14].second);
CHECK(n5->id() == visitor.nodes_[13]);
CHECK(-n5->id() == visitor.nodes_[14]);
CHECK(-n5->id() == visitor.edges_[15].second);
CHECK(-n4->id() == visitor.edges_[15].first);
CHECK(-n4->id() == visitor.nodes_[15]);
CHECK(-n4->id() == visitor.edges_[16].second);
CHECK(-n0->id() == visitor.edges_[16].first);
CHECK(-n0->id() == visitor.nodes_[16]);
CHECK(-n0->id() == visitor.edges_[17].second);
CHECK(-n3->id() == visitor.edges_[17].first);
CHECK(-n3->id() == visitor.nodes_[17]);
CHECK(-n3->id() == visitor.edges_[18].second);
CHECK(-n2->id() == visitor.edges_[18].first);
CHECK(-n2->id() == visitor.nodes_[18]);
CHECK(-n2->id() == visitor.edges_[19].second);
CHECK(-n0->id() == visitor.edges_[19].first);
// N4 may be reentered.
CHECK(n0->id() == visitor.edges_[20].first);
CHECK(n4->id() == visitor.edges_[20].second);
CHECK(n4->id() == visitor.nodes_[19]);
CHECK(n4->id() == visitor.edges_[21].first);
CHECK(n5->id() == visitor.edges_[21].second);
CHECK(-n5->id() == visitor.edges_[22].second);
CHECK(-n4->id() == visitor.edges_[22].first);
CHECK(-n4->id() == visitor.nodes_[20]);
CHECK(-n4->id() == visitor.edges_[23].second);
CHECK(-n0->id() == visitor.edges_[23].first);
CHECK(-n0->id() == visitor.nodes_[21]);
}
TEST(TestPrintNodeGraphToNodeGraphviz) {
GraphWithStartNodeTester graph;
Node* n2 = graph.NewNode(&dummy_operator, graph.start());
Node* n3 = graph.NewNode(&dummy_operator, graph.start());
Node* n4 = graph.NewNode(&dummy_operator, n2);
Node* n5 = graph.NewNode(&dummy_operator, n2);
Node* n6 = graph.NewNode(&dummy_operator, n3);
Node* n7 = graph.NewNode(&dummy_operator, n3);
Node* n8 = graph.NewNode(&dummy_operator, n5);
Node* n9 = graph.NewNode(&dummy_operator, n5);
Node* n10 = graph.NewNode(&dummy_operator, n9);
Node* n11 = graph.NewNode(&dummy_operator, n9);
Node* end_dependencies[6] = {n4, n8, n10, n11, n6, n7};
Node* n12 = graph.NewNode(&dummy_operator, 6, end_dependencies);
graph.SetEnd(n12);
OFStream os(stdout);
os << AsDOT(graph);
}
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