192 lines
6.1 KiB
C++
192 lines
6.1 KiB
C++
//===- ArenaTest.cpp ------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Analysis/FlowSensitive/Arena.h"
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#include "llvm/Support/ScopedPrinter.h"
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#include "llvm/Testing/Support/Error.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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namespace clang::dataflow {
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namespace {
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using llvm::HasValue;
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using testing::Ref;
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class ArenaTest : public ::testing::Test {
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protected:
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Arena A;
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};
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TEST_F(ArenaTest, CreateAtomicBoolValueReturnsDistinctValues) {
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auto &X = A.makeAtomValue();
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auto &Y = A.makeAtomValue();
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EXPECT_NE(&X, &Y);
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}
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TEST_F(ArenaTest, CreateTopBoolValueReturnsDistinctValues) {
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auto &X = A.makeTopValue();
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auto &Y = A.makeTopValue();
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EXPECT_NE(&X, &Y);
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}
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TEST_F(ArenaTest, GetOrCreateConjunctionReturnsSameExprOnSubsequentCalls) {
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auto &X = A.makeAtomRef(A.makeAtom());
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auto &Y = A.makeAtomRef(A.makeAtom());
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auto &XAndY1 = A.makeAnd(X, Y);
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auto &XAndY2 = A.makeAnd(X, Y);
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EXPECT_EQ(&XAndY1, &XAndY2);
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auto &YAndX = A.makeAnd(Y, X);
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EXPECT_EQ(&XAndY1, &YAndX);
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auto &Z = A.makeAtomRef(A.makeAtom());
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auto &XAndZ = A.makeAnd(X, Z);
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EXPECT_NE(&XAndY1, &XAndZ);
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}
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TEST_F(ArenaTest, GetOrCreateDisjunctionReturnsSameExprOnSubsequentCalls) {
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auto &X = A.makeAtomRef(A.makeAtom());
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auto &Y = A.makeAtomRef(A.makeAtom());
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auto &XOrY1 = A.makeOr(X, Y);
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auto &XOrY2 = A.makeOr(X, Y);
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EXPECT_EQ(&XOrY1, &XOrY2);
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auto &YOrX = A.makeOr(Y, X);
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EXPECT_EQ(&XOrY1, &YOrX);
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auto &Z = A.makeAtomRef(A.makeAtom());
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auto &XOrZ = A.makeOr(X, Z);
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EXPECT_NE(&XOrY1, &XOrZ);
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}
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TEST_F(ArenaTest, GetOrCreateNegationReturnsSameExprOnSubsequentCalls) {
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auto &X = A.makeAtomRef(A.makeAtom());
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auto &NotX1 = A.makeNot(X);
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auto &NotX2 = A.makeNot(X);
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EXPECT_EQ(&NotX1, &NotX2);
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auto &Y = A.makeAtomRef(A.makeAtom());
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auto &NotY = A.makeNot(Y);
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EXPECT_NE(&NotX1, &NotY);
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}
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TEST_F(ArenaTest, GetOrCreateImplicationReturnsSameExprOnSubsequentCalls) {
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auto &X = A.makeAtomRef(A.makeAtom());
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auto &Y = A.makeAtomRef(A.makeAtom());
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auto &XImpliesY1 = A.makeImplies(X, Y);
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auto &XImpliesY2 = A.makeImplies(X, Y);
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EXPECT_EQ(&XImpliesY1, &XImpliesY2);
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auto &YImpliesX = A.makeImplies(Y, X);
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EXPECT_NE(&XImpliesY1, &YImpliesX);
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auto &Z = A.makeAtomRef(A.makeAtom());
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auto &XImpliesZ = A.makeImplies(X, Z);
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EXPECT_NE(&XImpliesY1, &XImpliesZ);
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}
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TEST_F(ArenaTest, GetOrCreateIffReturnsSameExprOnSubsequentCalls) {
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auto &X = A.makeAtomRef(A.makeAtom());
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auto &Y = A.makeAtomRef(A.makeAtom());
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auto &XIffY1 = A.makeEquals(X, Y);
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auto &XIffY2 = A.makeEquals(X, Y);
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EXPECT_EQ(&XIffY1, &XIffY2);
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auto &YIffX = A.makeEquals(Y, X);
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EXPECT_EQ(&XIffY1, &YIffX);
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auto &Z = A.makeAtomRef(A.makeAtom());
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auto &XIffZ = A.makeEquals(X, Z);
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EXPECT_NE(&XIffY1, &XIffZ);
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}
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TEST_F(ArenaTest, Interning) {
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Atom X = A.makeAtom();
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Atom Y = A.makeAtom();
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const Formula &F1 = A.makeAnd(A.makeAtomRef(X), A.makeAtomRef(Y));
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const Formula &F2 = A.makeAnd(A.makeAtomRef(Y), A.makeAtomRef(X));
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EXPECT_EQ(&F1, &F2);
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BoolValue &B1 = A.makeBoolValue(F1);
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BoolValue &B2 = A.makeBoolValue(F2);
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EXPECT_EQ(&B1, &B2);
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EXPECT_EQ(&B1.formula(), &F1);
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}
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TEST_F(ArenaTest, ParseFormula) {
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Atom V5{5};
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Atom V6{6};
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EXPECT_THAT_EXPECTED(A.parseFormula("V5"), HasValue(Ref(A.makeAtomRef(V5))));
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EXPECT_THAT_EXPECTED(A.parseFormula("true"),
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HasValue(Ref(A.makeLiteral(true))));
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EXPECT_THAT_EXPECTED(A.parseFormula("!V5"),
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HasValue(Ref(A.makeNot(A.makeAtomRef(V5)))));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("(V5 = V6)"),
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HasValue(Ref(A.makeEquals(A.makeAtomRef(V5), A.makeAtomRef(V6)))));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("(V5 => V6)"),
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HasValue(Ref(A.makeImplies(A.makeAtomRef(V5), A.makeAtomRef(V6)))));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("(V5 & V6)"),
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HasValue(Ref(A.makeAnd(A.makeAtomRef(V5), A.makeAtomRef(V6)))));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("(V5 | V6)"),
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HasValue(Ref(A.makeOr(A.makeAtomRef(V5), A.makeAtomRef(V6)))));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("((V5 & (V6 & !false)) => ((V5 | V6) | false))"),
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HasValue(Ref(
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A.makeImplies(A.makeAnd(A.makeAtomRef(V5),
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A.makeAnd(A.makeAtomRef(V6),
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A.makeNot(A.makeLiteral(false)))),
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A.makeOr(A.makeOr(A.makeAtomRef(V5), A.makeAtomRef(V6)),
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A.makeLiteral(false))))));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("(V0 => error)"), llvm::FailedWithMessage(R"(bad formula at offset 7
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(V0 => error)
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^)"));
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EXPECT_THAT_EXPECTED(
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A.parseFormula("V1 V2"), llvm::FailedWithMessage(R"(bad formula at offset 3
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V1 V2
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^)"));
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}
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TEST_F(ArenaTest, IdentitySimplification) {
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auto &X = A.makeAtomRef(A.makeAtom());
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EXPECT_EQ(&X, &A.makeAnd(X, X));
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EXPECT_EQ(&X, &A.makeOr(X, X));
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EXPECT_EQ(&A.makeLiteral(true), &A.makeImplies(X, X));
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EXPECT_EQ(&A.makeLiteral(true), &A.makeEquals(X, X));
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EXPECT_EQ(&X, &A.makeNot(A.makeNot(X)));
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}
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TEST_F(ArenaTest, LiteralSimplification) {
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auto &X = A.makeAtomRef(A.makeAtom());
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EXPECT_EQ(&X, &A.makeAnd(X, A.makeLiteral(true)));
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EXPECT_EQ(&A.makeLiteral(false), &A.makeAnd(X, A.makeLiteral(false)));
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EXPECT_EQ(&A.makeLiteral(true), &A.makeOr(X, A.makeLiteral(true)));
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EXPECT_EQ(&X, &A.makeOr(X, A.makeLiteral(false)));
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EXPECT_EQ(&A.makeLiteral(true), &A.makeImplies(X, A.makeLiteral(true)));
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EXPECT_EQ(&A.makeNot(X), &A.makeImplies(X, A.makeLiteral(false)));
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EXPECT_EQ(&X, &A.makeImplies(A.makeLiteral(true), X));
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EXPECT_EQ(&A.makeLiteral(true), &A.makeImplies(A.makeLiteral(false), X));
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EXPECT_EQ(&X, &A.makeEquals(X, A.makeLiteral(true)));
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EXPECT_EQ(&A.makeNot(X), &A.makeEquals(X, A.makeLiteral(false)));
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EXPECT_EQ(&A.makeLiteral(false), &A.makeNot(A.makeLiteral(true)));
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EXPECT_EQ(&A.makeLiteral(true), &A.makeNot(A.makeLiteral(false)));
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}
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} // namespace
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} // namespace clang::dataflow
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