255 lines
9.3 KiB
C++
255 lines
9.3 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not read this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "gtest/gtest.h"
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#include "nodes.h"
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#include "primitive.h"
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namespace art {
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/**
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* Tests for the SideEffects class.
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*/
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//
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// Helper methods.
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//
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void testWriteAndReadSanity(SideEffects write, SideEffects read) {
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EXPECT_FALSE(write.DoesNothing());
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EXPECT_FALSE(read.DoesNothing());
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EXPECT_TRUE(write.DoesAnyWrite());
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EXPECT_FALSE(write.DoesAnyRead());
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EXPECT_FALSE(read.DoesAnyWrite());
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EXPECT_TRUE(read.DoesAnyRead());
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// All-dependences.
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SideEffects all = SideEffects::All();
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EXPECT_TRUE(all.MayDependOn(write));
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EXPECT_FALSE(write.MayDependOn(all));
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EXPECT_FALSE(all.MayDependOn(read));
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EXPECT_TRUE(read.MayDependOn(all));
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// None-dependences.
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SideEffects none = SideEffects::None();
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EXPECT_FALSE(none.MayDependOn(write));
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EXPECT_FALSE(write.MayDependOn(none));
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EXPECT_FALSE(none.MayDependOn(read));
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EXPECT_FALSE(read.MayDependOn(none));
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}
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void testWriteAndReadDependence(SideEffects write, SideEffects read) {
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testWriteAndReadSanity(write, read);
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// Dependence only in one direction.
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EXPECT_FALSE(write.MayDependOn(read));
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EXPECT_TRUE(read.MayDependOn(write));
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}
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void testNoWriteAndReadDependence(SideEffects write, SideEffects read) {
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testWriteAndReadSanity(write, read);
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// No dependence in any direction.
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EXPECT_FALSE(write.MayDependOn(read));
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EXPECT_FALSE(read.MayDependOn(write));
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}
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//
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// Actual tests.
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//
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TEST(SideEffectsTest, All) {
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SideEffects all = SideEffects::All();
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EXPECT_TRUE(all.DoesAnyWrite());
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EXPECT_TRUE(all.DoesAnyRead());
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EXPECT_FALSE(all.DoesNothing());
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EXPECT_TRUE(all.DoesAllReadWrite());
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}
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TEST(SideEffectsTest, None) {
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SideEffects none = SideEffects::None();
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EXPECT_FALSE(none.DoesAnyWrite());
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EXPECT_FALSE(none.DoesAnyRead());
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EXPECT_TRUE(none.DoesNothing());
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EXPECT_FALSE(none.DoesAllReadWrite());
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}
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TEST(SideEffectsTest, DependencesAndNoDependences) {
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// Apply test to each individual primitive type.
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for (Primitive::Type type = Primitive::kPrimNot;
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type < Primitive::kPrimVoid;
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type = Primitive::Type(type + 1)) {
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// Same primitive type and access type: proper write/read dep.
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testWriteAndReadDependence(
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SideEffects::FieldWriteOfType(type, false),
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SideEffects::FieldReadOfType(type, false));
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testWriteAndReadDependence(
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SideEffects::ArrayWriteOfType(type),
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SideEffects::ArrayReadOfType(type));
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// Same primitive type but different access type: no write/read dep.
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testNoWriteAndReadDependence(
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SideEffects::FieldWriteOfType(type, false),
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SideEffects::ArrayReadOfType(type));
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testNoWriteAndReadDependence(
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SideEffects::ArrayWriteOfType(type),
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SideEffects::FieldReadOfType(type, false));
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}
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}
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TEST(SideEffectsTest, NoDependences) {
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// Different primitive type, same access type: no write/read dep.
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testNoWriteAndReadDependence(
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SideEffects::FieldWriteOfType(Primitive::kPrimInt, false),
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SideEffects::FieldReadOfType(Primitive::kPrimDouble, false));
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testNoWriteAndReadDependence(
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SideEffects::ArrayWriteOfType(Primitive::kPrimInt),
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SideEffects::ArrayReadOfType(Primitive::kPrimDouble));
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// Everything different: no write/read dep.
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testNoWriteAndReadDependence(
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SideEffects::FieldWriteOfType(Primitive::kPrimInt, false),
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SideEffects::ArrayReadOfType(Primitive::kPrimDouble));
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testNoWriteAndReadDependence(
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SideEffects::ArrayWriteOfType(Primitive::kPrimInt),
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SideEffects::FieldReadOfType(Primitive::kPrimDouble, false));
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}
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TEST(SideEffectsTest, VolatileDependences) {
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SideEffects volatile_write =
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SideEffects::FieldWriteOfType(Primitive::kPrimInt, /* is_volatile */ true);
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SideEffects any_write =
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SideEffects::FieldWriteOfType(Primitive::kPrimInt, /* is_volatile */ false);
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SideEffects volatile_read =
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SideEffects::FieldReadOfType(Primitive::kPrimByte, /* is_volatile */ true);
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SideEffects any_read =
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SideEffects::FieldReadOfType(Primitive::kPrimByte, /* is_volatile */ false);
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EXPECT_FALSE(volatile_write.MayDependOn(any_read));
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EXPECT_TRUE(any_read.MayDependOn(volatile_write));
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EXPECT_TRUE(volatile_write.MayDependOn(any_write));
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EXPECT_FALSE(any_write.MayDependOn(volatile_write));
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EXPECT_FALSE(volatile_read.MayDependOn(any_read));
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EXPECT_TRUE(any_read.MayDependOn(volatile_read));
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EXPECT_TRUE(volatile_read.MayDependOn(any_write));
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EXPECT_FALSE(any_write.MayDependOn(volatile_read));
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}
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TEST(SideEffectsTest, SameWidthTypesNoAlias) {
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// Type I/F.
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testNoWriteAndReadDependence(
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SideEffects::FieldWriteOfType(Primitive::kPrimInt, /* is_volatile */ false),
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SideEffects::FieldReadOfType(Primitive::kPrimFloat, /* is_volatile */ false));
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testNoWriteAndReadDependence(
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SideEffects::ArrayWriteOfType(Primitive::kPrimInt),
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SideEffects::ArrayReadOfType(Primitive::kPrimFloat));
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// Type L/D.
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testNoWriteAndReadDependence(
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SideEffects::FieldWriteOfType(Primitive::kPrimLong, /* is_volatile */ false),
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SideEffects::FieldReadOfType(Primitive::kPrimDouble, /* is_volatile */ false));
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testNoWriteAndReadDependence(
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SideEffects::ArrayWriteOfType(Primitive::kPrimLong),
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SideEffects::ArrayReadOfType(Primitive::kPrimDouble));
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}
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TEST(SideEffectsTest, AllWritesAndReads) {
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SideEffects s = SideEffects::None();
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// Keep taking the union of different writes and reads.
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for (Primitive::Type type = Primitive::kPrimNot;
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type < Primitive::kPrimVoid;
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type = Primitive::Type(type + 1)) {
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s = s.Union(SideEffects::FieldWriteOfType(type, /* is_volatile */ false));
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s = s.Union(SideEffects::ArrayWriteOfType(type));
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s = s.Union(SideEffects::FieldReadOfType(type, /* is_volatile */ false));
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s = s.Union(SideEffects::ArrayReadOfType(type));
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}
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EXPECT_TRUE(s.DoesAllReadWrite());
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}
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TEST(SideEffectsTest, GC) {
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SideEffects can_trigger_gc = SideEffects::CanTriggerGC();
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SideEffects depends_on_gc = SideEffects::DependsOnGC();
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SideEffects all_changes = SideEffects::AllChanges();
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SideEffects all_dependencies = SideEffects::AllDependencies();
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EXPECT_TRUE(depends_on_gc.MayDependOn(can_trigger_gc));
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EXPECT_TRUE(depends_on_gc.Union(can_trigger_gc).MayDependOn(can_trigger_gc));
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EXPECT_FALSE(can_trigger_gc.MayDependOn(depends_on_gc));
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EXPECT_TRUE(depends_on_gc.MayDependOn(all_changes));
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EXPECT_TRUE(depends_on_gc.Union(can_trigger_gc).MayDependOn(all_changes));
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EXPECT_FALSE(can_trigger_gc.MayDependOn(all_changes));
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EXPECT_TRUE(all_changes.Includes(can_trigger_gc));
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EXPECT_FALSE(all_changes.Includes(depends_on_gc));
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EXPECT_TRUE(all_dependencies.Includes(depends_on_gc));
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EXPECT_FALSE(all_dependencies.Includes(can_trigger_gc));
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}
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TEST(SideEffectsTest, BitStrings) {
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EXPECT_STREQ(
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"|||||||",
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SideEffects::None().ToString().c_str());
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EXPECT_STREQ(
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"|GC|DFJISCBZL|DFJISCBZL|GC|DFJISCBZL|DFJISCBZL|",
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SideEffects::All().ToString().c_str());
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EXPECT_STREQ(
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"|||||DFJISCBZL|DFJISCBZL|",
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SideEffects::AllWrites().ToString().c_str());
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EXPECT_STREQ(
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"||DFJISCBZL|DFJISCBZL||||",
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SideEffects::AllReads().ToString().c_str());
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EXPECT_STREQ(
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"||||||L|",
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SideEffects::FieldWriteOfType(Primitive::kPrimNot, false).ToString().c_str());
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EXPECT_STREQ(
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"||DFJISCBZL|DFJISCBZL||DFJISCBZL|DFJISCBZL|",
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SideEffects::FieldWriteOfType(Primitive::kPrimNot, true).ToString().c_str());
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EXPECT_STREQ(
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"|||||Z||",
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SideEffects::ArrayWriteOfType(Primitive::kPrimBoolean).ToString().c_str());
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EXPECT_STREQ(
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"|||||C||",
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SideEffects::ArrayWriteOfType(Primitive::kPrimChar).ToString().c_str());
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EXPECT_STREQ(
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"|||||S||",
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SideEffects::ArrayWriteOfType(Primitive::kPrimShort).ToString().c_str());
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EXPECT_STREQ(
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"|||B||||",
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SideEffects::FieldReadOfType(Primitive::kPrimByte, false).ToString().c_str());
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EXPECT_STREQ(
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"||D|||||",
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SideEffects::ArrayReadOfType(Primitive::kPrimDouble).ToString().c_str());
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EXPECT_STREQ(
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"||J|||||",
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SideEffects::ArrayReadOfType(Primitive::kPrimLong).ToString().c_str());
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EXPECT_STREQ(
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"||F|||||",
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SideEffects::ArrayReadOfType(Primitive::kPrimFloat).ToString().c_str());
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EXPECT_STREQ(
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"||I|||||",
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SideEffects::ArrayReadOfType(Primitive::kPrimInt).ToString().c_str());
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SideEffects s = SideEffects::None();
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s = s.Union(SideEffects::FieldWriteOfType(Primitive::kPrimChar, /* is_volatile */ false));
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s = s.Union(SideEffects::FieldWriteOfType(Primitive::kPrimLong, /* is_volatile */ false));
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s = s.Union(SideEffects::ArrayWriteOfType(Primitive::kPrimShort));
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s = s.Union(SideEffects::FieldReadOfType(Primitive::kPrimInt, /* is_volatile */ false));
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s = s.Union(SideEffects::ArrayReadOfType(Primitive::kPrimFloat));
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s = s.Union(SideEffects::ArrayReadOfType(Primitive::kPrimDouble));
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EXPECT_STREQ("||DF|I||S|JC|", s.ToString().c_str());
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}
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} // namespace art
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