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v8/test/unittests/wasm/control-transfer-unittest.cc
Yang Guo f9a88acbc9 Move remaining files in src/ 
TBR=mvstanton@chromium.org,neis@chromium.org,ahaas@chromium.org

Bug: v8:9247
Change-Id: I5433c863a54f3412d73df0d38aba3fdbcfac7ebe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627973
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61830}
2019-05-24 18:24:36 +00:00

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13 KiB
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// Copyright 2016 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 "test/unittests/test-utils.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "src/init/v8.h"
#include "src/wasm/wasm-interpreter.h"
#include "test/common/wasm/wasm-macro-gen.h"
using testing::MakeMatcher;
using testing::Matcher;
using testing::MatcherInterface;
using testing::MatchResultListener;
using testing::StringMatchResultListener;
namespace v8 {
namespace internal {
namespace wasm {
struct ExpectedControlTransfer {
pc_t pc;
pcdiff_t pc_diff;
uint32_t sp_diff;
uint32_t target_arity;
};
// For nicer error messages.
class ControlTransferMatcher
: public MatcherInterface<const ControlTransferEntry&> {
public:
explicit ControlTransferMatcher(pc_t pc,
const ExpectedControlTransfer& expected)
: pc_(pc), expected_(expected) {}
void DescribeTo(std::ostream* os) const override {
*os << "@" << pc_ << ": pcdiff = " << expected_.pc_diff
<< ", spdiff = " << expected_.sp_diff
<< ", target arity = " << expected_.target_arity;
}
bool MatchAndExplain(const ControlTransferEntry& input,
MatchResultListener* listener) const override {
if (input.pc_diff == expected_.pc_diff &&
input.sp_diff == expected_.sp_diff &&
input.target_arity == expected_.target_arity) {
return true;
}
*listener << "@" << pc_ << ": pcdiff = " << input.pc_diff
<< ", spdiff = " << input.sp_diff
<< ", target arity = " << input.target_arity;
return false;
}
private:
pc_t pc_;
const ExpectedControlTransfer& expected_;
};
class ControlTransferTest : public TestWithZone {
public:
template <int code_len>
void CheckTransfers(
const byte (&code)[code_len],
std::initializer_list<ExpectedControlTransfer> expected_transfers) {
byte code_with_end[code_len + 1]; // NOLINT: code_len is a constant here
memcpy(code_with_end, code, code_len);
code_with_end[code_len] = kExprEnd;
ControlTransferMap map = WasmInterpreter::ComputeControlTransfersForTesting(
zone(), nullptr, code_with_end, code_with_end + code_len + 1);
// Check all control targets in the map.
for (auto& expected_transfer : expected_transfers) {
pc_t pc = expected_transfer.pc;
EXPECT_TRUE(map.count(pc) > 0) << "expected control target @" << pc;
if (!map.count(pc)) continue;
auto& entry = map[pc];
EXPECT_THAT(entry, MakeMatcher(new ControlTransferMatcher(
pc, expected_transfer)));
}
// Check there are no other control targets.
CheckNoOtherTargets(code_with_end, code_with_end + code_len + 1, map,
expected_transfers);
}
void CheckNoOtherTargets(
const byte* start, const byte* end, ControlTransferMap& map,
std::initializer_list<ExpectedControlTransfer> targets) {
// Check there are no other control targets.
for (pc_t pc = 0; start + pc < end; pc++) {
bool found = false;
for (auto& target : targets) {
if (target.pc == pc) {
found = true;
break;
}
}
if (found) continue;
EXPECT_TRUE(map.count(pc) == 0) << "expected no control @ +" << pc;
}
}
};
TEST_F(ControlTransferTest, SimpleIf) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprEnd // @4
};
CheckTransfers(code, {{2, 2, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleIf1) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprNop, // @4
kExprEnd // @5
};
CheckTransfers(code, {{2, 3, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleIf2) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprNop, // @4
kExprNop, // @5
kExprEnd // @6
};
CheckTransfers(code, {{2, 4, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleIfElse) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprElse, // @4
kExprEnd // @5
};
CheckTransfers(code, {{2, 3, 0, 0}, {4, 2, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleIfElse_v1) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprI32Const, // @4
0, // @5
kExprElse, // @6
kExprI32Const, // @7
0, // @8
kExprEnd // @9
};
CheckTransfers(code, {{2, 5, 0, 0}, {6, 4, 1, 0}});
}
TEST_F(ControlTransferTest, SimpleIfElse1) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprElse, // @4
kExprNop, // @5
kExprEnd // @6
};
CheckTransfers(code, {{2, 3, 0, 0}, {4, 3, 0, 0}});
}
TEST_F(ControlTransferTest, IfBr) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprBr, // @4
0, // @5
kExprEnd // @6
};
CheckTransfers(code, {{2, 4, 0, 0}, {4, 3, 0, 0}});
}
TEST_F(ControlTransferTest, IfBrElse) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprBr, // @4
0, // @5
kExprElse, // @6
kExprEnd // @7
};
CheckTransfers(code, {{2, 5, 0, 0}, {4, 4, 0, 0}, {6, 2, 0, 0}});
}
TEST_F(ControlTransferTest, IfElseBr) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprIf, // @2
kLocalVoid, // @3
kExprElse, // @4
kExprBr, // @5
0, // @6
kExprEnd // @7
};
CheckTransfers(code, {{2, 3, 0, 0}, {4, 4, 0, 0}, {5, 3, 0, 0}});
}
TEST_F(ControlTransferTest, BlockEmpty) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprEnd // @2
};
CheckTransfers(code, {});
}
TEST_F(ControlTransferTest, Br0) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprBr, // @2
0, // @3
kExprEnd // @4
};
CheckTransfers(code, {{2, 3, 0, 0}});
}
TEST_F(ControlTransferTest, Br1) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprNop, // @2
kExprBr, // @3
0, // @4
kExprEnd // @5
};
CheckTransfers(code, {{3, 3, 0, 0}});
}
TEST_F(ControlTransferTest, Br_v1a) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprI32Const, // @2
0, // @3
kExprBr, // @4
0, // @5
kExprEnd // @6
};
CheckTransfers(code, {{4, 3, 1, 0}});
}
TEST_F(ControlTransferTest, Br_v1b) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprI32Const, // @2
0, // @3
kExprBr, // @4
0, // @5
kExprEnd // @6
};
CheckTransfers(code, {{4, 3, 1, 0}});
}
TEST_F(ControlTransferTest, Br_v1c) {
byte code[] = {
kExprI32Const, // @0
0, // @1
kExprBlock, // @2
kLocalVoid, // @3
kExprBr, // @4
0, // @5
kExprEnd // @6
};
CheckTransfers(code, {{4, 3, 0, 0}});
}
TEST_F(ControlTransferTest, Br_v1d) {
byte code[] = {
kExprBlock, // @0
kLocalI32, // @1
kExprI32Const, // @2
0, // @3
kExprBr, // @4
0, // @5
kExprEnd // @6
};
CheckTransfers(code, {{4, 3, 1, 1}});
}
TEST_F(ControlTransferTest, Br2) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprNop, // @2
kExprNop, // @3
kExprBr, // @4
0, // @5
kExprEnd // @6
};
CheckTransfers(code, {{4, 3, 0, 0}});
}
TEST_F(ControlTransferTest, Br0b) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprBr, // @2
0, // @3
kExprNop, // @4
kExprEnd // @5
};
CheckTransfers(code, {{2, 4, 0, 0}});
}
TEST_F(ControlTransferTest, Br0c) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprBr, // @2
0, // @3
kExprNop, // @4
kExprNop, // @5
kExprEnd // @6
};
CheckTransfers(code, {{2, 5, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleLoop1) {
byte code[] = {
kExprLoop, // @0
kLocalVoid, // @1
kExprBr, // @2
0, // @3
kExprEnd // @4
};
CheckTransfers(code, {{2, -2, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleLoop2) {
byte code[] = {
kExprLoop, // @0
kLocalVoid, // @1
kExprNop, // @2
kExprBr, // @3
0, // @4
kExprEnd // @5
};
CheckTransfers(code, {{3, -3, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleLoopExit1) {
byte code[] = {
kExprLoop, // @0
kLocalVoid, // @1
kExprBr, // @2
1, // @3
kExprEnd // @4
};
CheckTransfers(code, {{2, 4, 0, 0}});
}
TEST_F(ControlTransferTest, SimpleLoopExit2) {
byte code[] = {
kExprLoop, // @0
kLocalVoid, // @1
kExprNop, // @2
kExprBr, // @3
1, // @4
kExprEnd // @5
};
CheckTransfers(code, {{3, 4, 0, 0}});
}
TEST_F(ControlTransferTest, BrTable0) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprI32Const, // @2
0, // @3
kExprBrTable, // @4
0, // @5
U32V_1(0), // @6
kExprEnd // @7
};
CheckTransfers(code, {{4, 4, 0, 0}});
}
TEST_F(ControlTransferTest, BrTable0_v1a) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprI32Const, // @2
0, // @3
kExprI32Const, // @4
0, // @5
kExprBrTable, // @6
0, // @7
U32V_1(0), // @8
kExprEnd // @9
};
CheckTransfers(code, {{6, 4, 1, 0}});
}
TEST_F(ControlTransferTest, BrTable0_v1b) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprI32Const, // @2
0, // @3
kExprI32Const, // @4
0, // @5
kExprBrTable, // @6
0, // @7
U32V_1(0), // @8
kExprEnd // @9
};
CheckTransfers(code, {{6, 4, 1, 0}});
}
TEST_F(ControlTransferTest, BrTable1) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprI32Const, // @2
0, // @3
kExprBrTable, // @4
1, // @5
U32V_1(0), // @6
U32V_1(0), // @7
kExprEnd // @8
};
CheckTransfers(code, {{4, 5, 0, 0}, {5, 4, 0, 0}});
}
TEST_F(ControlTransferTest, BrTable2) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprBlock, // @2
kLocalVoid, // @3
kExprI32Const, // @4
0, // @5
kExprBrTable, // @6
2, // @7
U32V_1(0), // @8
U32V_1(0), // @9
U32V_1(1), // @10
kExprEnd, // @11
kExprEnd // @12
};
CheckTransfers(code, {{6, 6, 0, 0}, {7, 5, 0, 0}, {8, 5, 0, 0}});
}
TEST_F(ControlTransferTest, BiggerSpDiffs) {
byte code[] = {
kExprBlock, // @0
kLocalI32, // @1
kExprI32Const, // @2
0, // @3
kExprBlock, // @4
kLocalVoid, // @5
kExprI32Const, // @6
0, // @7
kExprI32Const, // @8
0, // @9
kExprI32Const, // @10
0, // @11
kExprBrIf, // @12
0, // @13
kExprBr, // @14
1, // @15
kExprEnd, // @16
kExprEnd // @17
};
CheckTransfers(code, {{12, 5, 2, 0}, {14, 4, 3, 1}});
}
TEST_F(ControlTransferTest, NoInfoForUnreachableCode) {
byte code[] = {
kExprBlock, // @0
kLocalVoid, // @1
kExprBr, // @2
0, // @3
kExprBr, // @4 -- no control transfer entry!
1, // @5
kExprEnd, // @6
kExprBlock, // @7
kLocalVoid, // @8
kExprUnreachable, // @9
kExprI32Const, // @10
0, // @11
kExprIf, // @12 -- no control transfer entry!
kLocalVoid, // @13
kExprBr, // @14 -- no control transfer entry!
0, // @15
kExprElse, // @16 -- no control transfer entry!
kExprEnd, // @17
kExprEnd // @18
};
CheckTransfers(code, {{2, 5, 0, 0}});
}
} // namespace wasm
} // namespace internal
} // namespace v8
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