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6a31d05340
PR-URL: https://github.com/nodejs/node/pull/21079 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Yang Guo <yangguo@chromium.org>
92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
// Copyright 2017 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/simplified-lowering.h"
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#include "src/compiler/compiler-source-position-table.h"
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#include "src/compiler/machine-operator.h"
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#include "src/compiler/simplified-operator.h"
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#include "test/unittests/compiler/graph-unittest.h"
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#include "test/unittests/compiler/node-test-utils.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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class SimplifiedLoweringTest : public GraphTest {
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public:
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explicit SimplifiedLoweringTest(int num_parameters = 1)
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: GraphTest(num_parameters),
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num_parameters_(num_parameters),
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machine_(zone()),
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javascript_(zone()),
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simplified_(zone()),
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jsgraph_(isolate(), graph(), common(), &javascript_, &simplified_,
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&machine_) {}
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~SimplifiedLoweringTest() override {}
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void LowerGraph(Node* node) {
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// Make sure we always start with an empty graph.
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graph()->SetStart(graph()->NewNode(common()->Start(num_parameters())));
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graph()->SetEnd(graph()->NewNode(common()->End(1), graph()->start()));
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// Return {node} directly, so that we can match it with
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// "IsReturn(expected)".
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Node* zero = graph()->NewNode(common()->NumberConstant(0));
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Node* ret = graph()->NewNode(common()->Return(), zero, node,
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graph()->start(), graph()->start());
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NodeProperties::MergeControlToEnd(graph(), common(), ret);
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{
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// Simplified lowering needs to run w/o the typer decorator so make sure
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// the object is not live at the same time.
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Typer typer(isolate(), Typer::kNoFlags, graph());
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typer.Run();
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}
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SimplifiedLowering lowering(jsgraph(), zone(), source_positions(),
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node_origins(),
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PoisoningMitigationLevel::kDontPoison);
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lowering.LowerAllNodes();
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}
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int num_parameters() const { return num_parameters_; }
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JSGraph* jsgraph() { return &jsgraph_; }
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private:
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const int num_parameters_;
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MachineOperatorBuilder machine_;
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JSOperatorBuilder javascript_;
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SimplifiedOperatorBuilder simplified_;
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JSGraph jsgraph_;
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};
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const int kSmiValues[] = {Smi::kMinValue,
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Smi::kMinValue + 1,
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Smi::kMinValue + 2,
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3,
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2,
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1,
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0,
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-1,
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-2,
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-3,
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Smi::kMaxValue - 2,
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Smi::kMaxValue - 1,
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Smi::kMaxValue};
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TEST_F(SimplifiedLoweringTest, SmiConstantToIntPtrConstant) {
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TRACED_FOREACH(int, x, kSmiValues) {
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LowerGraph(jsgraph()->Constant(x));
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intptr_t smi = bit_cast<intptr_t>(Smi::FromInt(x));
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EXPECT_THAT(graph()->end()->InputAt(1),
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IsReturn(IsIntPtrConstant(smi), start(), start()));
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}
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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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