e34f536620
This correctly marks the {JSCreate} operator as potentially throwing,
since it might trigger a property access of the 'prototype' property
during instantiation. This is observable, can throw (not kNoThrow),
might have side-effects (not kNoWrite), or even trigger a lazy deopt
event (not kNoDeopt). The inlining logic has been adapted to wire up
control projections accordingly.
Note that this does not yet take care of the "after" frame-state which
is associated with the {JSCreate} node introduced by the inliner. We
still might re-evaluate the property access upon lazy deoptimization.
R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-5638
BUG=v8:5638
Review-Url: https://codereview.chromium.org/2671203003
Cr-Commit-Position: refs/heads/master@{#42981}
118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
// 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.
|
|
|
|
#include "src/compiler/js-operator.h"
|
|
#include "src/compiler/opcodes.h"
|
|
#include "src/compiler/operator.h"
|
|
#include "src/compiler/operator-properties.h"
|
|
#include "test/unittests/test-utils.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
namespace compiler {
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Shared operators.
|
|
|
|
namespace {
|
|
|
|
struct SharedOperator {
|
|
const Operator* (JSOperatorBuilder::*constructor)();
|
|
IrOpcode::Value opcode;
|
|
Operator::Properties properties;
|
|
int value_input_count;
|
|
int frame_state_input_count;
|
|
int effect_input_count;
|
|
int control_input_count;
|
|
int value_output_count;
|
|
int effect_output_count;
|
|
int control_output_count;
|
|
};
|
|
|
|
const SharedOperator kSharedOperators[] = {
|
|
#define SHARED(Name, properties, value_input_count, frame_state_input_count, \
|
|
effect_input_count, control_input_count, value_output_count, \
|
|
effect_output_count, control_output_count) \
|
|
{ \
|
|
&JSOperatorBuilder::Name, IrOpcode::kJS##Name, properties, \
|
|
value_input_count, frame_state_input_count, effect_input_count, \
|
|
control_input_count, value_output_count, effect_output_count, \
|
|
control_output_count \
|
|
}
|
|
SHARED(ToNumber, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
|
|
SHARED(ToString, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
|
|
SHARED(ToName, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
|
|
SHARED(ToObject, Operator::kFoldable, 1, 1, 1, 1, 1, 1, 2),
|
|
SHARED(Create, Operator::kNoProperties, 2, 1, 1, 1, 1, 1, 2),
|
|
SHARED(TypeOf, Operator::kPure, 1, 0, 0, 0, 1, 0, 0),
|
|
#undef SHARED
|
|
};
|
|
|
|
|
|
std::ostream& operator<<(std::ostream& os, const SharedOperator& sop) {
|
|
return os << IrOpcode::Mnemonic(sop.opcode);
|
|
}
|
|
|
|
} // namespace
|
|
|
|
|
|
class JSSharedOperatorTest
|
|
: public TestWithZone,
|
|
public ::testing::WithParamInterface<SharedOperator> {};
|
|
|
|
|
|
TEST_P(JSSharedOperatorTest, InstancesAreGloballyShared) {
|
|
const SharedOperator& sop = GetParam();
|
|
JSOperatorBuilder javascript1(zone());
|
|
JSOperatorBuilder javascript2(zone());
|
|
EXPECT_EQ((javascript1.*sop.constructor)(), (javascript2.*sop.constructor)());
|
|
}
|
|
|
|
|
|
TEST_P(JSSharedOperatorTest, NumberOfInputsAndOutputs) {
|
|
JSOperatorBuilder javascript(zone());
|
|
const SharedOperator& sop = GetParam();
|
|
const Operator* op = (javascript.*sop.constructor)();
|
|
|
|
const int context_input_count = 1;
|
|
EXPECT_EQ(sop.value_input_count, op->ValueInputCount());
|
|
EXPECT_EQ(context_input_count, OperatorProperties::GetContextInputCount(op));
|
|
EXPECT_EQ(sop.frame_state_input_count,
|
|
OperatorProperties::GetFrameStateInputCount(op));
|
|
EXPECT_EQ(sop.effect_input_count, op->EffectInputCount());
|
|
EXPECT_EQ(sop.control_input_count, op->ControlInputCount());
|
|
EXPECT_EQ(sop.value_input_count + context_input_count +
|
|
sop.frame_state_input_count + sop.effect_input_count +
|
|
sop.control_input_count,
|
|
OperatorProperties::GetTotalInputCount(op));
|
|
|
|
EXPECT_EQ(sop.value_output_count, op->ValueOutputCount());
|
|
EXPECT_EQ(sop.effect_output_count, op->EffectOutputCount());
|
|
EXPECT_EQ(sop.control_output_count, op->ControlOutputCount());
|
|
}
|
|
|
|
|
|
TEST_P(JSSharedOperatorTest, OpcodeIsCorrect) {
|
|
JSOperatorBuilder javascript(zone());
|
|
const SharedOperator& sop = GetParam();
|
|
const Operator* op = (javascript.*sop.constructor)();
|
|
EXPECT_EQ(sop.opcode, op->opcode());
|
|
}
|
|
|
|
|
|
TEST_P(JSSharedOperatorTest, Properties) {
|
|
JSOperatorBuilder javascript(zone());
|
|
const SharedOperator& sop = GetParam();
|
|
const Operator* op = (javascript.*sop.constructor)();
|
|
EXPECT_EQ(sop.properties, op->properties());
|
|
}
|
|
|
|
|
|
INSTANTIATE_TEST_CASE_P(JSOperatorTest, JSSharedOperatorTest,
|
|
::testing::ValuesIn(kSharedOperators));
|
|
|
|
} // namespace compiler
|
|
} // namespace internal
|
|
} // namespace v8
|