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v8/test/cctest/wasm/test-gc.cc
Matthias Liedtke 2935b22fe2 [wasm-gc] Add 'none' type for nullref 
This adds a new type 'none' as part of the WASM GC MVP.
The type can only be used in combination with a nullable reference, e.g.
'ref.null none'.
A 'nullref' is implicitly convertible to any nullable reference type.

Bug: v8:7748
Change-Id: Ic5ab6cc27094b3c9103ce3584452daa34633612f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3755136
Auto-Submit: Matthias Liedtke <mliedtke@google.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81670}
2022-07-12 17:54:58 +00:00

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// Copyright 2020 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 <stdint.h>
#include "src/base/vector.h"
#include "src/codegen/signature.h"
#include "src/utils/utils.h"
#include "src/wasm/module-decoder.h"
#include "src/wasm/struct-types.h"
#include "src/wasm/wasm-arguments.h"
#include "src/wasm/wasm-engine.h"
#include "src/wasm/wasm-module-builder.h"
#include "src/wasm/wasm-module.h"
#include "src/wasm/wasm-objects-inl.h"
#include "src/wasm/wasm-opcodes.h"
#include "test/cctest/cctest.h"
#include "test/cctest/compiler/value-helper.h"
#include "test/cctest/wasm/wasm-run-utils.h"
#include "test/common/wasm/test-signatures.h"
#include "test/common/wasm/wasm-macro-gen.h"
#include "test/common/wasm/wasm-module-runner.h"
namespace v8 {
namespace internal {
namespace wasm {
namespace test_gc {
using F = std::pair<ValueType, bool>;
class WasmGCTester {
public:
explicit WasmGCTester(
TestExecutionTier execution_tier = TestExecutionTier::kTurbofan)
: flag_gc(&v8::internal::FLAG_experimental_wasm_gc, true),
flag_typedfuns(&v8::internal::FLAG_experimental_wasm_typed_funcref,
true),
flag_liftoff(&v8::internal::FLAG_liftoff,
execution_tier == TestExecutionTier::kLiftoff),
flag_liftoff_only(&v8::internal::FLAG_liftoff_only,
execution_tier == TestExecutionTier::kLiftoff),
flag_wasm_dynamic_tiering(&v8::internal::FLAG_wasm_dynamic_tiering,
v8::internal::FLAG_liftoff_only != true),
// Test both setups with canonicalization and without.
flag_canonicalization(&v8::internal::FLAG_wasm_type_canonicalization,
execution_tier == TestExecutionTier::kTurbofan),
flag_tierup(&v8::internal::FLAG_wasm_tier_up, false),
zone_(&allocator, ZONE_NAME),
builder_(&zone_),
isolate_(CcTest::InitIsolateOnce()),
scope(isolate_),
thrower(isolate_, "Test wasm GC") {
testing::SetupIsolateForWasmModule(isolate_);
}
byte AddGlobal(ValueType type, bool mutability, WasmInitExpr init) {
return builder_.AddGlobal(type, mutability, init);
}
byte DefineFunction(FunctionSig* sig, std::initializer_list<ValueType> locals,
std::initializer_list<byte> code) {
return DefineFunctionImpl(builder_.AddFunction(sig), locals, code);
}
byte DefineFunction(uint32_t sig_index,
std::initializer_list<ValueType> locals,
std::initializer_list<byte> code) {
return DefineFunctionImpl(builder_.AddFunction(sig_index), locals, code);
}
void DefineExportedFunction(const char* name, FunctionSig* sig,
std::initializer_list<byte> code) {
WasmFunctionBuilder* fun = builder_.AddFunction(sig);
fun->EmitCode(code.begin(), static_cast<uint32_t>(code.size()));
builder_.AddExport(base::CStrVector(name), fun);
}
MaybeHandle<Object> CallExportedFunction(const char* name, int argc,
Handle<Object> args[]) {
Handle<WasmExportedFunction> func =
testing::GetExportedFunction(isolate_, instance_, name)
.ToHandleChecked();
return Execution::Call(isolate_, func,
isolate_->factory()->undefined_value(), argc, args);
}
byte DefineStruct(std::initializer_list<F> fields,
uint32_t supertype = kNoSuperType) {
StructType::Builder type_builder(&zone_,
static_cast<uint32_t>(fields.size()));
for (F field : fields) {
type_builder.AddField(field.first, field.second);
}
return builder_.AddStructType(type_builder.Build(), supertype);
}
byte DefineArray(ValueType element_type, bool mutability,
uint32_t supertype = kNoSuperType) {
return builder_.AddArrayType(zone_.New<ArrayType>(element_type, mutability),
supertype);
}
byte DefineSignature(FunctionSig* sig, uint32_t supertype = kNoSuperType) {
return builder_.AddSignature(sig, supertype);
}
byte DefineTable(ValueType type, uint32_t min_size, uint32_t max_size) {
return builder_.AddTable(type, min_size, max_size);
}
void CompileModule() {
ZoneBuffer buffer(&zone_);
builder_.WriteTo(&buffer);
MaybeHandle<WasmInstanceObject> maybe_instance =
testing::CompileAndInstantiateForTesting(
isolate_, &thrower, ModuleWireBytes(buffer.begin(), buffer.end()));
if (thrower.error()) FATAL("%s", thrower.error_msg());
instance_ = maybe_instance.ToHandleChecked();
}
void CheckResult(uint32_t function_index, int32_t expected) {
const FunctionSig* sig = sigs.i_v();
DCHECK(*sig == *instance_->module()->functions[function_index].sig);
CWasmArgumentsPacker packer(CWasmArgumentsPacker::TotalSize(sig));
CheckResultImpl(function_index, sig, &packer, expected);
}
void CheckResult(uint32_t function_index, int32_t expected, int32_t arg) {
const FunctionSig* sig = sigs.i_i();
DCHECK(*sig == *instance_->module()->functions[function_index].sig);
CWasmArgumentsPacker packer(CWasmArgumentsPacker::TotalSize(sig));
packer.Push(arg);
CheckResultImpl(function_index, sig, &packer, expected);
}
MaybeHandle<Object> GetResultObject(uint32_t function_index) {
const FunctionSig* sig = instance_->module()->functions[function_index].sig;
DCHECK_EQ(sig->parameter_count(), 0);
DCHECK_EQ(sig->return_count(), 1);
CWasmArgumentsPacker packer(CWasmArgumentsPacker::TotalSize(sig));
CallFunctionImpl(function_index, sig, &packer);
CHECK(!isolate_->has_pending_exception());
packer.Reset();
return Handle<Object>(Object(packer.Pop<Address>()), isolate_);
}
MaybeHandle<Object> GetResultObject(uint32_t function_index, int32_t arg) {
const FunctionSig* sig = instance_->module()->functions[function_index].sig;
DCHECK_EQ(sig->parameter_count(), 1);
DCHECK_EQ(sig->return_count(), 1);
DCHECK(sig->parameters()[0] == kWasmI32);
CWasmArgumentsPacker packer(CWasmArgumentsPacker::TotalSize(sig));
packer.Push(arg);
CallFunctionImpl(function_index, sig, &packer);
CHECK(!isolate_->has_pending_exception());
packer.Reset();
return Handle<Object>(Object(packer.Pop<Address>()), isolate_);
}
void CheckHasThrown(uint32_t function_index, const char* expected = "") {
const FunctionSig* sig = instance_->module()->functions[function_index].sig;
DCHECK_EQ(sig->parameter_count(), 0);
CWasmArgumentsPacker packer(CWasmArgumentsPacker::TotalSize(sig));
CheckHasThrownImpl(function_index, sig, &packer, expected);
}
void CheckHasThrown(uint32_t function_index, int32_t arg,
const char* expected = "") {
const FunctionSig* sig = instance_->module()->functions[function_index].sig;
DCHECK_EQ(sig->parameter_count(), 1);
DCHECK(sig->parameters()[0] == kWasmI32);
CWasmArgumentsPacker packer(CWasmArgumentsPacker::TotalSize(sig));
packer.Push(arg);
CheckHasThrownImpl(function_index, sig, &packer, expected);
}
bool HasSimdSupport(TestExecutionTier tier) const {
#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32
// Liftoff does not have a fallback for executing SIMD instructions if
// SSE4_1 is not available.
if (tier == TestExecutionTier::kLiftoff &&
!CpuFeatures::IsSupported(SSE4_1)) {
return false;
}
#endif
USE(tier);
return true;
}
Handle<WasmInstanceObject> instance() { return instance_; }
Isolate* isolate() { return isolate_; }
WasmModuleBuilder* builder() { return &builder_; }
Zone* zone() { return &zone_; }
TestSignatures sigs;
private:
const FlagScope<bool> flag_gc;
const FlagScope<bool> flag_typedfuns;
const FlagScope<bool> flag_liftoff;
const FlagScope<bool> flag_liftoff_only;
const FlagScope<bool> flag_wasm_dynamic_tiering;
const FlagScope<bool> flag_canonicalization;
const FlagScope<bool> flag_tierup;
byte DefineFunctionImpl(WasmFunctionBuilder* fun,
std::initializer_list<ValueType> locals,
std::initializer_list<byte> code) {
for (ValueType local : locals) {
fun->AddLocal(local);
}
fun->EmitCode(code.begin(), static_cast<uint32_t>(code.size()));
return fun->func_index();
}
void CheckResultImpl(uint32_t function_index, const FunctionSig* sig,
CWasmArgumentsPacker* packer, int32_t expected) {
CallFunctionImpl(function_index, sig, packer);
if (isolate_->has_pending_exception()) {
Handle<String> message =
ErrorUtils::ToString(isolate_,
handle(isolate_->pending_exception(), isolate_))
.ToHandleChecked();
FATAL("%s", message->ToCString().get());
}
packer->Reset();
CHECK_EQ(expected, packer->Pop<int32_t>());
}
void CheckHasThrownImpl(uint32_t function_index, const FunctionSig* sig,
CWasmArgumentsPacker* packer, const char* expected) {
CallFunctionImpl(function_index, sig, packer);
CHECK(isolate_->has_pending_exception());
Handle<String> message =
ErrorUtils::ToString(isolate_,
handle(isolate_->pending_exception(), isolate_))
.ToHandleChecked();
std::string message_str(message->ToCString().get());
CHECK_NE(message_str.find(expected), std::string::npos);
isolate_->clear_pending_exception();
}
void CallFunctionImpl(uint32_t function_index, const FunctionSig* sig,
CWasmArgumentsPacker* packer) {
WasmCodeRefScope code_ref_scope;
NativeModule* native_module = instance_->module_object().native_module();
WasmCode* code = native_module->GetCode(function_index);
Address wasm_call_target = code->instruction_start();
Handle<Object> object_ref = instance_;
Handle<CodeT> c_wasm_entry =
compiler::CompileCWasmEntry(isolate_, sig, native_module->module());
Execution::CallWasm(isolate_, c_wasm_entry, wasm_call_target, object_ref,
packer->argv());
}
v8::internal::AccountingAllocator allocator;
Zone zone_;
WasmModuleBuilder builder_;
Isolate* const isolate_;
const HandleScope scope;
Handle<WasmInstanceObject> instance_;
ErrorThrower thrower;
};
ValueType ref(uint32_t type_index) { return ValueType::Ref(type_index); }
ValueType refNull(uint32_t type_index) {
return ValueType::RefNull(type_index);
}
WASM_COMPILED_EXEC_TEST(WasmBasicStruct) {
WasmGCTester tester(execution_tier);
const byte type_index =
tester.DefineStruct({F(kWasmI32, true), F(kWasmI32, true)});
const byte empty_struct_index = tester.DefineStruct({});
ValueType kRefType = ref(type_index);
ValueType kEmptyStructType = ref(empty_struct_index);
ValueType kRefNullType = refNull(type_index);
FunctionSig sig_q_v(1, 0, &kRefType);
FunctionSig sig_qe_v(1, 0, &kEmptyStructType);
// Test struct.new and struct.get.
const byte kGet1 = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_STRUCT_GET(
type_index, 0,
WASM_STRUCT_NEW(type_index, WASM_I32V(42), WASM_I32V(64))),
kExprEnd});
// Test struct.new and struct.get.
const byte kGet2 = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_STRUCT_GET(
type_index, 1,
WASM_STRUCT_NEW(type_index, WASM_I32V(42), WASM_I32V(64))),
kExprEnd});
// Test struct.new, returning struct reference.
const byte kGetStruct = tester.DefineFunction(
&sig_q_v, {},
{WASM_STRUCT_NEW(type_index, WASM_I32V(42), WASM_I32V(64)), kExprEnd});
const byte kGetStructNominal = tester.DefineFunction(
&sig_q_v, {},
{WASM_STRUCT_NEW_DEFAULT(type_index), WASM_DROP,
WASM_STRUCT_NEW(type_index, WASM_I32V(42), WASM_I32V(64)), kExprEnd});
// Test struct.new, returning reference to an empty struct.
const byte kGetEmptyStruct = tester.DefineFunction(
&sig_qe_v, {},
{WASM_GC_OP(kExprStructNew), empty_struct_index, kExprEnd});
// Test struct.set, struct refs types in locals.
const byte j_local_index = 0;
const byte j_field_index = 0;
const byte kSet = tester.DefineFunction(
tester.sigs.i_v(), {kRefNullType},
{WASM_LOCAL_SET(j_local_index, WASM_STRUCT_NEW(type_index, WASM_I32V(42),
WASM_I32V(64))),
WASM_STRUCT_SET(type_index, j_field_index, WASM_LOCAL_GET(j_local_index),
WASM_I32V(-99)),
WASM_STRUCT_GET(type_index, j_field_index,
WASM_LOCAL_GET(j_local_index)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kGet1, 42);
tester.CheckResult(kGet2, 64);
CHECK(tester.GetResultObject(kGetStruct).ToHandleChecked()->IsWasmStruct());
CHECK(tester.GetResultObject(kGetStructNominal)
.ToHandleChecked()
->IsWasmStruct());
CHECK(tester.GetResultObject(kGetEmptyStruct)
.ToHandleChecked()
->IsWasmStruct());
tester.CheckResult(kSet, -99);
}
// Test struct.get, ref.as_non_null and ref-typed globals.
WASM_COMPILED_EXEC_TEST(WasmRefAsNonNull) {
WasmGCTester tester(execution_tier);
const byte type_index =
tester.DefineStruct({F(kWasmI32, true), F(kWasmI32, true)});
ValueType kRefTypes[] = {ref(type_index)};
ValueType kRefNullType = refNull(type_index);
FunctionSig sig_q_v(1, 0, kRefTypes);
const byte global_index =
tester.AddGlobal(kRefNullType, true,
WasmInitExpr::RefNullConst(
static_cast<HeapType::Representation>(type_index)));
const byte field_index = 0;
const byte kNonNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_GLOBAL_SET(global_index, WASM_STRUCT_NEW(type_index, WASM_I32V(55),
WASM_I32V(66))),
WASM_STRUCT_GET(type_index, field_index,
WASM_REF_AS_NON_NULL(WASM_GLOBAL_GET(global_index))),
kExprEnd});
const byte kNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_GLOBAL_SET(global_index, WASM_REF_NULL(type_index)),
WASM_STRUCT_GET(type_index, field_index,
WASM_REF_AS_NON_NULL(WASM_GLOBAL_GET(global_index))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kNonNull, 55);
tester.CheckHasThrown(kNull);
}
WASM_COMPILED_EXEC_TEST(WasmRefAsNonNullSkipCheck) {
FlagScope<bool> no_check(&FLAG_experimental_wasm_skip_null_checks, true);
WasmGCTester tester(execution_tier);
const byte type_index =
tester.DefineStruct({F(kWasmI32, true), F(kWasmI32, true)});
ValueType kRefType = ref(type_index);
FunctionSig sig_q_v(1, 0, &kRefType);
const byte global_index =
tester.AddGlobal(refNull(type_index), true,
WasmInitExpr::RefNullConst(
static_cast<HeapType::Representation>(type_index)));
const byte kFunc = tester.DefineFunction(
&sig_q_v, {},
{WASM_GLOBAL_SET(global_index, WASM_REF_NULL(type_index)),
WASM_REF_AS_NON_NULL(WASM_GLOBAL_GET(global_index)), kExprEnd});
tester.CompileModule();
Handle<Object> result = tester.GetResultObject(kFunc).ToHandleChecked();
// Without null checks, ref.as_non_null can actually return null.
CHECK(result->IsNull());
}
WASM_COMPILED_EXEC_TEST(WasmBrOnNull) {
WasmGCTester tester(execution_tier);
const byte type_index =
tester.DefineStruct({F(kWasmI32, true), F(kWasmI32, true)});
ValueType kRefTypes[] = {ref(type_index)};
ValueType kRefNullType = refNull(type_index);
FunctionSig sig_q_v(1, 0, kRefTypes);
const byte local_index = 0;
const byte kTaken = tester.DefineFunction(
tester.sigs.i_v(), {kRefNullType},
{WASM_BLOCK_I(WASM_I32V(42),
// Branch will be taken.
// 42 left on stack outside the block (not 52).
WASM_BR_ON_NULL(0, WASM_LOCAL_GET(local_index)),
WASM_I32V(52), WASM_BR(0)),
kExprEnd});
const byte field_index = 0;
const byte kNotTaken = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_I(
WASM_I32V(42),
WASM_STRUCT_GET(
type_index, field_index,
// Branch will not be taken.
// 52 left on stack outside the block (not 42).
WASM_BR_ON_NULL(0, WASM_STRUCT_NEW(type_index, WASM_I32V(52),
WASM_I32V(62)))),
WASM_BR(0)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kTaken, 42);
tester.CheckResult(kNotTaken, 52);
}
WASM_COMPILED_EXEC_TEST(WasmBrOnNonNull) {
WasmGCTester tester(execution_tier);
const byte type_index =
tester.DefineStruct({F(kWasmI32, true), F(kWasmI32, true)});
ValueType kRefType = ref(type_index);
ValueType kRefNullType = refNull(type_index);
FunctionSig sig_q_v(1, 0, &kRefType);
const byte field_index = 0;
const byte kTaken = tester.DefineFunction(
tester.sigs.i_v(), {kRefNullType, kRefNullType},
{WASM_LOCAL_SET(
0, WASM_STRUCT_NEW(type_index, WASM_I32V(52), WASM_I32V(62))),
WASM_LOCAL_SET(
1, WASM_STRUCT_NEW(type_index, WASM_I32V(11), WASM_I32V(22))),
WASM_STRUCT_GET(type_index, field_index,
WASM_BLOCK_R(ref(type_index),
// Branch will be taken, and the block will
// return struct(52, 62).
WASM_BR_ON_NON_NULL(0, WASM_LOCAL_GET(0)),
WASM_REF_AS_NON_NULL(WASM_LOCAL_GET(1)))),
kExprEnd});
const byte kNotTaken = tester.DefineFunction(
tester.sigs.i_v(), {kRefNullType, kRefNullType},
{WASM_LOCAL_SET(0, WASM_REF_NULL(type_index)),
WASM_LOCAL_SET(
1, WASM_STRUCT_NEW(type_index, WASM_I32V(11), WASM_I32V(22))),
WASM_STRUCT_GET(type_index, field_index,
WASM_BLOCK_R(ref(type_index),
// Branch will not be taken, and the block
// will return struct(11, 22).
WASM_BR_ON_NON_NULL(0, WASM_LOCAL_GET(0)),
WASM_REF_AS_NON_NULL(WASM_LOCAL_GET(1)))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kTaken, 52);
tester.CheckResult(kNotTaken, 11);
}
WASM_COMPILED_EXEC_TEST(RefCast) {
WasmGCTester tester(execution_tier);
const byte supertype_index = tester.DefineStruct({F(kWasmI32, true)});
const byte subtype1_index = tester.DefineStruct(
{F(kWasmI32, true), F(kWasmF32, false)}, supertype_index);
const byte subtype2_index = tester.DefineStruct(
{F(kWasmI32, true), F(kWasmI64, false)}, supertype_index);
auto super_sig =
FixedSizeSignature<ValueType>::Params(ValueType::RefNull(subtype1_index))
.Returns(ValueType::RefNull(supertype_index));
auto sub_sig1 =
FixedSizeSignature<ValueType>::Params(ValueType::RefNull(supertype_index))
.Returns(ValueType::RefNull(subtype1_index));
auto sub_sig2 =
FixedSizeSignature<ValueType>::Params(ValueType::RefNull(supertype_index))
.Returns(ValueType::RefNull(subtype2_index));
const byte function_type_index = tester.DefineSignature(&super_sig);
const byte function_subtype1_index =
tester.DefineSignature(&sub_sig1, function_type_index);
const byte function_subtype2_index =
tester.DefineSignature(&sub_sig2, function_type_index);
const byte function_index = tester.DefineFunction(
function_subtype1_index, {},
{WASM_STRUCT_NEW_DEFAULT_WITH_RTT(subtype1_index,
WASM_RTT_CANON(subtype1_index)),
WASM_END});
// Just so this function counts as "declared".
tester.AddGlobal(ValueType::RefNull(function_type_index), false,
WasmInitExpr::RefFuncConst(function_index));
const byte kTestSuccessful = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(supertype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
subtype1_index, WASM_RTT_CANON(subtype1_index))),
WASM_STRUCT_GET(
subtype1_index, 0,
WASM_REF_CAST(WASM_LOCAL_GET(0), WASM_RTT_CANON(subtype1_index))),
WASM_END});
const byte kTestFailed = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(supertype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
subtype1_index, WASM_RTT_CANON(subtype1_index))),
WASM_STRUCT_GET(
subtype2_index, 0,
WASM_REF_CAST(WASM_LOCAL_GET(0), WASM_RTT_CANON(subtype2_index))),
WASM_END});
const byte kFuncTestSuccessfulSuper = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(function_type_index)},
{WASM_LOCAL_SET(0, WASM_REF_FUNC(function_index)),
WASM_REF_CAST(WASM_LOCAL_GET(0), WASM_RTT_CANON(function_type_index)),
WASM_DROP, WASM_I32V(0), WASM_END});
const byte kFuncTestSuccessfulSub = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(function_type_index)},
{WASM_LOCAL_SET(0, WASM_REF_FUNC(function_index)),
WASM_REF_CAST(WASM_LOCAL_GET(0),
WASM_RTT_CANON(function_subtype1_index)),
WASM_DROP, WASM_I32V(0), WASM_END});
const byte kFuncTestFailed = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(function_type_index)},
{WASM_LOCAL_SET(0, WASM_REF_FUNC(function_index)),
WASM_REF_CAST(WASM_LOCAL_GET(0),
WASM_RTT_CANON(function_subtype2_index)),
WASM_DROP, WASM_I32V(1), WASM_END});
tester.CompileModule();
tester.CheckResult(kTestSuccessful, 0);
tester.CheckHasThrown(kTestFailed);
tester.CheckResult(kFuncTestSuccessfulSuper, 0);
tester.CheckResult(kFuncTestSuccessfulSub, 0);
tester.CheckHasThrown(kFuncTestFailed);
}
WASM_COMPILED_EXEC_TEST(RefCastStatic) {
WasmGCTester tester(execution_tier);
const byte supertype_index = tester.DefineStruct({F(kWasmI32, true)});
const byte subtype1_index = tester.DefineStruct(
{F(kWasmI32, true), F(kWasmF32, false)}, supertype_index);
const byte subtype2_index = tester.DefineStruct(
{F(kWasmI32, true), F(kWasmI64, false)}, supertype_index);
const byte kTestSuccessful = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(supertype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype1_index)),
WASM_STRUCT_GET(subtype1_index, 0,
WASM_REF_CAST_STATIC(WASM_LOCAL_GET(0), subtype1_index)),
WASM_END});
const byte kTestFailed = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(supertype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype1_index)),
WASM_STRUCT_GET(subtype2_index, 0,
WASM_REF_CAST_STATIC(WASM_LOCAL_GET(0), subtype2_index)),
WASM_END});
tester.CompileModule();
tester.CheckResult(kTestSuccessful, 0);
tester.CheckHasThrown(kTestFailed);
}
WASM_COMPILED_EXEC_TEST(RefCastStaticNoChecks) {
FlagScope<bool> scope(&FLAG_experimental_wasm_assume_ref_cast_succeeds, true);
WasmGCTester tester(execution_tier);
const byte supertype_index = tester.DefineStruct({F(kWasmI32, true)});
const byte subtype1_index = tester.DefineStruct(
{F(kWasmI32, true), F(kWasmF32, false)}, supertype_index);
const byte subtype2_index = tester.DefineStruct(
{F(kWasmI32, true), F(kWasmI64, false)}, supertype_index);
const byte kTestSuccessful = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(supertype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype1_index)),
WASM_STRUCT_GET(subtype1_index, 0,
WASM_REF_CAST_STATIC(WASM_LOCAL_GET(0), subtype1_index)),
WASM_END});
const byte kTestFailed = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(supertype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype1_index)),
WASM_STRUCT_GET(subtype2_index, 0,
WASM_REF_CAST_STATIC(WASM_LOCAL_GET(0), subtype2_index)),
WASM_END});
tester.CompileModule();
tester.CheckResult(kTestSuccessful, 0);
tester.CheckResult(kTestFailed, 0);
}
WASM_COMPILED_EXEC_TEST(BrOnCast) {
WasmGCTester tester(execution_tier);
ValueType kDataRefNull = ValueType::RefNull(HeapType::kData);
const byte type_index = tester.DefineStruct({F(kWasmI32, true)});
const byte other_type_index = tester.DefineStruct({F(kWasmF32, true)});
const byte rtt_index =
tester.AddGlobal(ValueType::Rtt(type_index), false,
WasmInitExpr::RttCanon(
static_cast<HeapType::Representation>(type_index)));
const byte kTestStructStatic = tester.DefineFunction(
tester.sigs.i_v(), {kWasmI32, kDataRefNull},
{WASM_BLOCK_R(
ValueType::RefNull(type_index), WASM_LOCAL_SET(0, WASM_I32V(111)),
// Pipe a struct through a local so it's statically typed
// as dataref.
WASM_LOCAL_SET(1, WASM_STRUCT_NEW(other_type_index, WASM_F32(1.0))),
WASM_LOCAL_GET(1),
// The type check fails, so this branch isn't taken.
WASM_BR_ON_CAST_STATIC(0, type_index), WASM_DROP,
WASM_LOCAL_SET(0, WASM_I32V(221)), // (Final result) - 1
WASM_LOCAL_SET(1, WASM_STRUCT_NEW(type_index, WASM_I32V(1))),
WASM_LOCAL_GET(1),
// This branch is taken.
WASM_BR_ON_CAST_STATIC(0, type_index),
WASM_GC_OP(kExprRefCastStatic), type_index,
// Not executed due to the branch.
WASM_LOCAL_SET(0, WASM_I32V(333))),
WASM_GC_OP(kExprStructGet), type_index, 0, WASM_LOCAL_GET(0),
kExprI32Add, kExprEnd});
const byte kTestNull = tester.DefineFunction(
tester.sigs.i_v(), {kWasmI32, kDataRefNull},
{WASM_BLOCK_R(ValueType::RefNull(type_index),
WASM_LOCAL_SET(0, WASM_I32V(111)),
WASM_LOCAL_GET(1), // Put a nullref onto the value stack.
// Not taken for nullref.
WASM_BR_ON_CAST(0, WASM_GLOBAL_GET(rtt_index)),
WASM_RTT_CANON(type_index), WASM_GC_OP(kExprRefCast),
WASM_LOCAL_SET(0, WASM_I32V(222))), // Final result.
WASM_DROP, WASM_LOCAL_GET(0), kExprEnd});
const byte kTypedAfterBranch = tester.DefineFunction(
tester.sigs.i_v(), {kWasmI32, kDataRefNull},
{WASM_LOCAL_SET(1, WASM_STRUCT_NEW(type_index, WASM_I32V(42))),
WASM_BLOCK_I(
// The inner block should take the early branch with a struct
// on the stack.
WASM_BLOCK_R(ValueType::Ref(type_index), WASM_LOCAL_GET(1),
WASM_BR_ON_CAST(0, WASM_GLOBAL_GET(rtt_index)),
// Returning 123 is the unreachable failure case.
WASM_I32V(123), WASM_BR(1)),
// The outer block catches the struct left behind by the inner block
// and reads its field.
WASM_GC_OP(kExprStructGet), type_index, 0),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kTestStructStatic, 222);
tester.CheckResult(kTestNull, 222);
tester.CheckResult(kTypedAfterBranch, 42);
}
WASM_COMPILED_EXEC_TEST(BrOnCastFail) {
WasmGCTester tester(execution_tier);
ValueType kDataRefNull = ValueType::RefNull(HeapType::kData);
const byte type0 = tester.DefineStruct({F(kWasmI32, true)});
const byte type1 =
tester.DefineStruct({F(kWasmI64, true), F(kWasmI32, true)});
const int field0_value = 5;
const int field1_value = 25;
const int null_value = 45;
// local_0 = value;
// if (!(local_0 instanceof type0)) goto block1;
// return static_cast<type0>(local_0).field_0;
// block1:
// if (local_0 == nullptr) goto block2;
// return static_cast<type1>(local_0).field_1;
// block2:
// return null_value;
#define FUNCTION_BODY(value) \
WASM_LOCAL_SET(0, WASM_SEQ(value)), \
WASM_BLOCK( \
WASM_BLOCK_R(kDataRefNull, WASM_LOCAL_GET(0), \
WASM_BR_ON_CAST_FAIL(0, WASM_RTT_CANON(type0)), \
WASM_GC_OP(kExprStructGet), type0, 0, kExprReturn), \
kExprBrOnNull, 0, WASM_RTT_CANON(type1), WASM_GC_OP(kExprRefCast), \
WASM_GC_OP(kExprStructGet), type1, 1, kExprReturn), \
WASM_I32V(null_value), kExprEnd
const byte kBranchTaken = tester.DefineFunction(
tester.sigs.i_v(), {kDataRefNull},
{FUNCTION_BODY(
WASM_STRUCT_NEW(type1, WASM_I64V(10), WASM_I32V(field1_value)))});
const byte kBranchNotTaken = tester.DefineFunction(
tester.sigs.i_v(), {kDataRefNull},
{FUNCTION_BODY(WASM_STRUCT_NEW(type0, WASM_I32V(field0_value)))});
const byte kNull = tester.DefineFunction(
tester.sigs.i_v(), {kDataRefNull}, {FUNCTION_BODY(WASM_REF_NULL(type0))});
const byte kUnrelatedTypes = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(type1)},
{FUNCTION_BODY(
WASM_STRUCT_NEW(type1, WASM_I64V(10), WASM_I32V(field1_value)))});
#undef FUNCTION_BODY
const byte kBranchTakenStatic = tester.DefineFunction(
tester.sigs.i_v(), {kDataRefNull},
{WASM_LOCAL_SET(
0, WASM_STRUCT_NEW(type1, WASM_I64V(10), WASM_I32V(field1_value))),
WASM_BLOCK(
WASM_BLOCK_R(kDataRefNull, WASM_LOCAL_GET(0),
WASM_BR_ON_CAST_STATIC_FAIL(0, type0),
WASM_GC_OP(kExprStructGet), type0, 0, kExprReturn),
kExprBrOnNull, 0, WASM_GC_OP(kExprRefCastStatic), type1,
WASM_GC_OP(kExprStructGet), type1, 1, kExprReturn),
WASM_I32V(null_value), kExprEnd});
tester.CompileModule();
tester.CheckResult(kBranchTaken, field1_value);
tester.CheckResult(kBranchTakenStatic, field1_value);
tester.CheckResult(kBranchNotTaken, field0_value);
tester.CheckResult(kNull, null_value);
tester.CheckResult(kUnrelatedTypes, field1_value);
}
WASM_COMPILED_EXEC_TEST(WasmRefEq) {
WasmGCTester tester(execution_tier);
byte type_index = tester.DefineStruct({F(kWasmI32, true), F(kWasmI32, true)});
ValueType kRefTypes[] = {ref(type_index)};
ValueType kRefNullType = refNull(type_index);
FunctionSig sig_q_v(1, 0, kRefTypes);
byte local_index = 0;
const byte kFunc = tester.DefineFunction(
tester.sigs.i_v(), {kRefNullType},
{WASM_LOCAL_SET(local_index, WASM_STRUCT_NEW(type_index, WASM_I32V(55),
WASM_I32V(66))),
WASM_I32_ADD(
WASM_I32_SHL(
WASM_REF_EQ( // true
WASM_LOCAL_GET(local_index), WASM_LOCAL_GET(local_index)),
WASM_I32V(0)),
WASM_I32_ADD(
WASM_I32_SHL(WASM_REF_EQ( // false
WASM_LOCAL_GET(local_index),
WASM_STRUCT_NEW(type_index, WASM_I32V(55),
WASM_I32V(66))),
WASM_I32V(1)),
WASM_I32_ADD(WASM_I32_SHL( // false
WASM_REF_EQ(WASM_LOCAL_GET(local_index),
WASM_REF_NULL(type_index)),
WASM_I32V(2)),
WASM_I32_SHL(WASM_REF_EQ( // true
WASM_REF_NULL(type_index),
WASM_REF_NULL(type_index)),
WASM_I32V(3))))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kFunc, 0b1001);
}
WASM_COMPILED_EXEC_TEST(WasmPackedStructU) {
WasmGCTester tester(execution_tier);
const byte type_index = tester.DefineStruct(
{F(kWasmI8, true), F(kWasmI16, true), F(kWasmI32, true)});
ValueType struct_type = refNull(type_index);
const byte local_index = 0;
int32_t expected_output_0 = 0x1234;
int32_t expected_output_1 = -1;
const byte kF0 = tester.DefineFunction(
tester.sigs.i_v(), {struct_type},
{WASM_LOCAL_SET(local_index,
WASM_STRUCT_NEW(type_index, WASM_I32V(expected_output_0),
WASM_I32V(expected_output_1),
WASM_I32V(0x12345678))),
WASM_STRUCT_GET_U(type_index, 0, WASM_LOCAL_GET(local_index)),
kExprEnd});
const byte kF1 = tester.DefineFunction(
tester.sigs.i_v(), {struct_type},
{WASM_LOCAL_SET(local_index,
WASM_STRUCT_NEW(type_index, WASM_I32V(expected_output_0),
WASM_I32V(expected_output_1),
WASM_I32V(0x12345678))),
WASM_STRUCT_GET_U(type_index, 1, WASM_LOCAL_GET(local_index)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kF0, static_cast<uint8_t>(expected_output_0));
tester.CheckResult(kF1, static_cast<uint16_t>(expected_output_1));
}
WASM_COMPILED_EXEC_TEST(WasmPackedStructS) {
WasmGCTester tester(execution_tier);
const byte type_index = tester.DefineStruct(
{F(kWasmI8, true), F(kWasmI16, true), F(kWasmI32, true)});
ValueType struct_type = refNull(type_index);
const byte local_index = 0;
int32_t expected_output_0 = 0x80;
int32_t expected_output_1 = 42;
const byte kF0 = tester.DefineFunction(
tester.sigs.i_v(), {struct_type},
{WASM_LOCAL_SET(
local_index,
WASM_STRUCT_NEW(type_index, WASM_I32V(expected_output_0),
WASM_I32V(expected_output_1), WASM_I32V(0))),
WASM_STRUCT_GET_S(type_index, 0, WASM_LOCAL_GET(local_index)),
kExprEnd});
const byte kF1 = tester.DefineFunction(
tester.sigs.i_v(), {struct_type},
{WASM_LOCAL_SET(local_index, WASM_STRUCT_NEW(type_index, WASM_I32V(0x80),
WASM_I32V(expected_output_1),
WASM_I32V(0))),
WASM_STRUCT_GET_S(type_index, 1, WASM_LOCAL_GET(local_index)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kF0, static_cast<int8_t>(expected_output_0));
tester.CheckResult(kF1, static_cast<int16_t>(expected_output_1));
}
WASM_COMPILED_EXEC_TEST(WasmBasicArray) {
WasmGCTester tester(execution_tier);
if (!tester.HasSimdSupport(execution_tier)) return;
const byte type_index = tester.DefineArray(wasm::kWasmI32, true);
const byte fp_type_index = tester.DefineArray(wasm::kWasmF64, true);
const byte immut_type_index = tester.DefineArray(wasm::kWasmI32, false);
ValueType kRefTypes[] = {ref(type_index)};
FunctionSig sig_q_v(1, 0, kRefTypes);
ValueType kRefNullType = refNull(type_index);
// f: a = [12, 12, 12]; a[1] = 42; return a[arg0]
const byte local_index = 1;
const byte kGetElem = tester.DefineFunction(
tester.sigs.i_i(), {kRefNullType},
{WASM_LOCAL_SET(local_index, WASM_ARRAY_NEW_WITH_RTT(
type_index, WASM_I32V(12), WASM_I32V(3),
WASM_RTT_CANON(type_index))),
WASM_ARRAY_SET(type_index, WASM_LOCAL_GET(local_index), WASM_I32V(1),
WASM_I32V(42)),
WASM_ARRAY_GET(type_index, WASM_LOCAL_GET(local_index),
WASM_LOCAL_GET(0)),
kExprEnd});
// Reads and returns an array's length.
const byte kGetLength =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_ARRAY_LEN(WASM_ARRAY_NEW_WITH_RTT(
type_index, WASM_I32V(0), WASM_I32V(42),
WASM_RTT_CANON(type_index))),
kExprEnd});
// Create an array of length 2, initialized to [42, 42].
const byte kAllocate = tester.DefineFunction(
&sig_q_v, {},
{WASM_ARRAY_NEW_WITH_RTT(type_index, WASM_I32V(42), WASM_I32V(2),
WASM_RTT_CANON(type_index)),
kExprEnd});
const byte kAllocateStatic = tester.DefineFunction(
&sig_q_v, {},
{WASM_ARRAY_NEW_DEFAULT(type_index, WASM_I32V(2)), WASM_DROP,
WASM_ARRAY_NEW(type_index, WASM_I32V(42), WASM_I32V(2)), kExprEnd});
const byte kInit = tester.DefineFunction(
&sig_q_v, {},
{WASM_ARRAY_NEW_FIXED(type_index, 3, WASM_I32V(10), WASM_I32V(20),
WASM_I32V(30), WASM_RTT_CANON(type_index)),
kExprEnd});
const byte kImmutable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_ARRAY_GET(immut_type_index,
WASM_ARRAY_NEW_FIXED(immut_type_index, 2, WASM_I32V(42),
WASM_I32V(43),
WASM_RTT_CANON(immut_type_index)),
WASM_I32V(0)),
kExprEnd});
const uint32_t kLongLength = 1u << 16;
const byte kAllocateLarge = tester.DefineFunction(
&sig_q_v, {},
{WASM_ARRAY_NEW_DEFAULT_WITH_RTT(type_index, WASM_I32V(kLongLength),
WASM_RTT_CANON(type_index)),
kExprEnd});
ArrayType array_type(kWasmI32, true);
const uint32_t kTooLong = WasmArray::MaxLength(&array_type) + 1;
const byte kAllocateTooLarge = tester.DefineFunction(
&sig_q_v, {},
{WASM_ARRAY_NEW_DEFAULT_WITH_RTT(type_index, WASM_I32V(kTooLong),
WASM_RTT_CANON(type_index)),
kExprEnd});
// Tests that fp arrays work properly.
// f: a = [10.0, 10.0, 10.0]; a[1] = 42.42; return static_cast<int64>(a[1]);
double result_value = 42.42;
const byte kTestFpArray = tester.DefineFunction(
tester.sigs.i_v(), {refNull(fp_type_index)},
{WASM_LOCAL_SET(0, WASM_ARRAY_NEW_WITH_RTT(
fp_type_index, WASM_F64(10.0), WASM_I32V(3),
WASM_RTT_CANON(fp_type_index))),
WASM_ARRAY_SET(fp_type_index, WASM_LOCAL_GET(0), WASM_I32V(1),
WASM_F64(result_value)),
WASM_I32_SCONVERT_F64(
WASM_ARRAY_GET(fp_type_index, WASM_LOCAL_GET(0), WASM_I32V(1))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kGetElem, 12, 0);
tester.CheckResult(kGetElem, 42, 1);
tester.CheckResult(kGetElem, 12, 2);
tester.CheckHasThrown(kGetElem, 3);
tester.CheckHasThrown(kGetElem, -1);
tester.CheckResult(kGetLength, 42);
tester.CheckResult(kImmutable, 42);
tester.CheckResult(kTestFpArray, static_cast<int32_t>(result_value));
Handle<Object> h_result = tester.GetResultObject(kAllocate).ToHandleChecked();
CHECK(h_result->IsWasmArray());
CHECK_EQ(2, Handle<WasmArray>::cast(h_result)->length());
h_result = tester.GetResultObject(kAllocateStatic).ToHandleChecked();
CHECK(h_result->IsWasmArray());
CHECK_EQ(2, Handle<WasmArray>::cast(h_result)->length());
Handle<Object> init_result = tester.GetResultObject(kInit).ToHandleChecked();
CHECK(init_result->IsWasmArray());
CHECK_EQ(3, Handle<WasmArray>::cast(init_result)->length());
CHECK_EQ(10, Handle<WasmArray>::cast(init_result)->GetElement(0).to_i32());
CHECK_EQ(20, Handle<WasmArray>::cast(init_result)->GetElement(1).to_i32());
CHECK_EQ(30, Handle<WasmArray>::cast(init_result)->GetElement(2).to_i32());
MaybeHandle<Object> maybe_large_result =
tester.GetResultObject(kAllocateLarge);
Handle<Object> large_result = maybe_large_result.ToHandleChecked();
CHECK(large_result->IsWasmArray());
CHECK(Handle<WasmArray>::cast(large_result)->Size() >
kMaxRegularHeapObjectSize);
tester.CheckHasThrown(kAllocateTooLarge, "requested new array is too large");
}
WASM_COMPILED_EXEC_TEST(WasmPackedArrayU) {
WasmGCTester tester(execution_tier);
const byte array_index = tester.DefineArray(kWasmI8, true);
ValueType array_type = refNull(array_index);
const byte param_index = 0;
const byte local_index = 1;
int32_t expected_output_3 = 258;
const byte kF = tester.DefineFunction(
tester.sigs.i_i(), {array_type},
{WASM_LOCAL_SET(local_index, WASM_ARRAY_NEW_WITH_RTT(
array_index, WASM_I32V(0), WASM_I32V(4),
WASM_RTT_CANON(array_index))),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(0),
WASM_I32V(1)),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(1),
WASM_I32V(10)),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(2),
WASM_I32V(200)),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(3),
WASM_I32V(expected_output_3)),
WASM_ARRAY_GET_U(array_index, WASM_LOCAL_GET(local_index),
WASM_LOCAL_GET(param_index)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kF, 1, 0);
tester.CheckResult(kF, 10, 1);
tester.CheckResult(kF, 200, 2);
// Only the 2 lsb's of 258 should be stored in the array.
tester.CheckResult(kF, static_cast<uint8_t>(expected_output_3), 3);
}
WASM_COMPILED_EXEC_TEST(WasmPackedArrayS) {
WasmGCTester tester(execution_tier);
const byte array_index = tester.DefineArray(kWasmI16, true);
ValueType array_type = refNull(array_index);
int32_t array_elements[] = {0x12345678, 10, 0xFEDC, 0xFF1234};
const byte param_index = 0;
const byte local_index = 1;
const byte kF = tester.DefineFunction(
tester.sigs.i_i(), {array_type},
{WASM_LOCAL_SET(
local_index,
WASM_ARRAY_NEW_WITH_RTT(array_index, WASM_I32V(array_elements[0]),
WASM_I32V(4), WASM_RTT_CANON(array_index))),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(1),
WASM_I32V(array_elements[1])),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(2),
WASM_I32V(array_elements[2])),
WASM_ARRAY_SET(array_index, WASM_LOCAL_GET(local_index), WASM_I32V(3),
WASM_I32V(array_elements[3])),
WASM_ARRAY_GET_S(array_index, WASM_LOCAL_GET(local_index),
WASM_LOCAL_GET(param_index)),
kExprEnd});
tester.CompileModule();
// Exactly the 2 lsb's should be stored by array.new.
tester.CheckResult(kF, static_cast<int16_t>(array_elements[0]), 0);
tester.CheckResult(kF, static_cast<int16_t>(array_elements[1]), 1);
// Sign should be extended.
tester.CheckResult(kF, static_cast<int16_t>(array_elements[2]), 2);
// Exactly the 2 lsb's should be stored by array.set.
tester.CheckResult(kF, static_cast<int16_t>(array_elements[3]), 3);
}
WASM_COMPILED_EXEC_TEST(WasmArrayCopy) {
WasmGCTester tester(execution_tier);
const byte array32_index = tester.DefineArray(kWasmI32, true);
const byte array16_index = tester.DefineArray(kWasmI16, true);
const byte arrayref_index = tester.DefineArray(refNull(array32_index), true);
// Copies i32 ranges: local1[0..3] to local2[6..9].
const byte kCopyI32 = tester.DefineFunction(
tester.sigs.i_i(), {refNull(array32_index), refNull(array32_index)},
{WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(10),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(array32_index, WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_I32V(0)),
WASM_ARRAY_SET(array32_index, WASM_LOCAL_GET(1), WASM_I32V(1),
WASM_I32V(1)),
WASM_ARRAY_SET(array32_index, WASM_LOCAL_GET(1), WASM_I32V(2),
WASM_I32V(2)),
WASM_ARRAY_SET(array32_index, WASM_LOCAL_GET(1), WASM_I32V(3),
WASM_I32V(3)),
WASM_LOCAL_SET(
2, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(10),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_COPY(array32_index, array32_index, WASM_LOCAL_GET(2),
WASM_I32V(6), WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_I32V(4)),
WASM_ARRAY_GET(array32_index, WASM_LOCAL_GET(2), WASM_LOCAL_GET(0)),
kExprEnd});
// Copies i16 ranges: local1[0..3] to local2[6..9].
const byte kCopyI16 = tester.DefineFunction(
tester.sigs.i_i(), {refNull(array16_index), refNull(array16_index)},
{WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array16_index, WASM_I32V(10),
WASM_RTT_CANON(array16_index))),
WASM_ARRAY_SET(array16_index, WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_I32V(0)),
WASM_ARRAY_SET(array16_index, WASM_LOCAL_GET(1), WASM_I32V(1),
WASM_I32V(1)),
WASM_ARRAY_SET(array16_index, WASM_LOCAL_GET(1), WASM_I32V(2),
WASM_I32V(2)),
WASM_ARRAY_SET(array16_index, WASM_LOCAL_GET(1), WASM_I32V(3),
WASM_I32V(3)),
WASM_LOCAL_SET(
2, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array16_index, WASM_I32V(10),
WASM_RTT_CANON(array16_index))),
WASM_ARRAY_COPY(array16_index, array16_index, WASM_LOCAL_GET(2),
WASM_I32V(6), WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_I32V(4)),
WASM_ARRAY_GET_S(array16_index, WASM_LOCAL_GET(2), WASM_LOCAL_GET(0)),
kExprEnd});
// Copies reference ranges: local1[0..3] to local2[6..9].
const byte kCopyRef = tester.DefineFunction(
FunctionSig::Build(tester.zone(), {refNull(array32_index)}, {kWasmI32}),
{refNull(arrayref_index), refNull(arrayref_index)},
{WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(arrayref_index, WASM_I32V(10),
WASM_RTT_CANON(arrayref_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(6),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(1),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(7),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(2),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(8),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(3),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(9),
WASM_RTT_CANON(array32_index))),
WASM_LOCAL_SET(
2, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(arrayref_index, WASM_I32V(10),
WASM_RTT_CANON(arrayref_index))),
WASM_ARRAY_COPY(arrayref_index, arrayref_index, WASM_LOCAL_GET(2),
WASM_I32V(6), WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_I32V(4)),
WASM_ARRAY_GET(arrayref_index, WASM_LOCAL_GET(2), WASM_LOCAL_GET(0)),
kExprEnd});
// Copies overlapping reference ranges: local1[0..3] to local1[2..5].
const byte kCopyRefOverlapping = tester.DefineFunction(
FunctionSig::Build(tester.zone(), {refNull(array32_index)}, {kWasmI32}),
{refNull(arrayref_index)},
{WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(arrayref_index, WASM_I32V(10),
WASM_RTT_CANON(arrayref_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(2),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(1),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(3),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(2),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(4),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_SET(
arrayref_index, WASM_LOCAL_GET(1), WASM_I32V(3),
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(5),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_COPY(arrayref_index, arrayref_index, WASM_LOCAL_GET(1),
WASM_I32V(2), WASM_LOCAL_GET(1), WASM_I32V(0),
WASM_I32V(4)),
WASM_ARRAY_GET(arrayref_index, WASM_LOCAL_GET(1), WASM_LOCAL_GET(0)),
kExprEnd});
const byte kOobSource = tester.DefineFunction(
tester.sigs.v_v(), {refNull(array32_index), refNull(array32_index)},
{WASM_LOCAL_SET(
0, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(10),
WASM_RTT_CANON(array32_index))),
WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(10),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_COPY(array32_index, array32_index, WASM_LOCAL_GET(1),
WASM_I32V(6), WASM_LOCAL_GET(0), WASM_I32V(8),
WASM_I32V(4)),
kExprEnd});
const byte kOobDestination = tester.DefineFunction(
tester.sigs.v_v(), {refNull(array32_index), refNull(array32_index)},
{WASM_LOCAL_SET(
0, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(10),
WASM_RTT_CANON(array32_index))),
WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array32_index, WASM_I32V(10),
WASM_RTT_CANON(array32_index))),
WASM_ARRAY_COPY(array32_index, array32_index, WASM_LOCAL_GET(1),
WASM_I32V(6), WASM_LOCAL_GET(0), WASM_I32V(3),
WASM_I32V(5)),
kExprEnd});
const byte kZeroLength = tester.DefineFunction(
tester.sigs.i_v(), {refNull(arrayref_index), refNull(arrayref_index)},
{WASM_LOCAL_SET(
0, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(arrayref_index, WASM_I32V(10),
WASM_RTT_CANON(arrayref_index))),
WASM_LOCAL_SET(
1, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(arrayref_index, WASM_I32V(10),
WASM_RTT_CANON(arrayref_index))),
WASM_ARRAY_COPY(arrayref_index, arrayref_index, WASM_LOCAL_GET(1),
WASM_I32V(6), WASM_LOCAL_GET(0), WASM_I32V(3),
WASM_I32V(0)),
WASM_I32V(0), kExprEnd});
tester.CompileModule();
tester.CheckResult(kCopyI32, 0, 5);
tester.CheckResult(kCopyI32, 0, 6);
tester.CheckResult(kCopyI32, 1, 7);
tester.CheckResult(kCopyI32, 2, 8);
tester.CheckResult(kCopyI32, 3, 9);
tester.CheckResult(kCopyI16, 0, 5);
tester.CheckResult(kCopyI16, 0, 6);
tester.CheckResult(kCopyI16, 1, 7);
tester.CheckResult(kCopyI16, 2, 8);
tester.CheckResult(kCopyI16, 3, 9);
{
Handle<Object> result5 =
tester.GetResultObject(kCopyRef, 5).ToHandleChecked();
CHECK(result5->IsNull());
for (int i = 6; i <= 9; i++) {
Handle<Object> res =
tester.GetResultObject(kCopyRef, i).ToHandleChecked();
CHECK(res->IsWasmArray());
CHECK_EQ(Handle<WasmArray>::cast(res)->length(),
static_cast<uint32_t>(i));
}
}
CHECK(tester.GetResultObject(kCopyRefOverlapping, 6)
.ToHandleChecked()
->IsNull());
Handle<Object> res0 =
tester.GetResultObject(kCopyRefOverlapping, 0).ToHandleChecked();
CHECK(res0->IsWasmArray());
CHECK_EQ(Handle<WasmArray>::cast(res0)->length(), static_cast<uint32_t>(2));
for (int i = 2; i <= 5; i++) {
Handle<Object> res =
tester.GetResultObject(kCopyRefOverlapping, i).ToHandleChecked();
CHECK(res->IsWasmArray());
CHECK_EQ(Handle<WasmArray>::cast(res)->length(), static_cast<uint32_t>(i));
}
tester.CheckHasThrown(kOobSource);
tester.CheckHasThrown(kOobDestination);
tester.CheckResult(kZeroLength, 0); // Does not throw.
}
WASM_COMPILED_EXEC_TEST(NewDefault) {
WasmGCTester tester(execution_tier);
if (!tester.HasSimdSupport(execution_tier)) return;
tester.builder()->StartRecursiveTypeGroup();
const byte struct_type = tester.DefineStruct(
{F(wasm::kWasmI32, true), F(wasm::kWasmF64, true), F(refNull(0), true)});
tester.builder()->EndRecursiveTypeGroup();
const byte array_type = tester.DefineArray(wasm::kWasmI32, true);
// Returns: struct[0] + f64_to_i32(struct[1]) + (struct[2].is_null ^ 1) == 0.
const byte allocate_struct = tester.DefineFunction(
tester.sigs.i_v(), {refNull(struct_type)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
struct_type, WASM_RTT_CANON(struct_type))),
WASM_I32_ADD(
WASM_I32_ADD(WASM_STRUCT_GET(struct_type, 0, WASM_LOCAL_GET(0)),
WASM_I32_SCONVERT_F64(WASM_STRUCT_GET(
struct_type, 1, WASM_LOCAL_GET(0)))),
WASM_I32_XOR(WASM_REF_IS_NULL(
WASM_STRUCT_GET(struct_type, 2, WASM_LOCAL_GET(0))),
WASM_I32V(1))),
kExprEnd});
const byte allocate_array = tester.DefineFunction(
tester.sigs.i_v(), {refNull(array_type)},
{WASM_LOCAL_SET(
0, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_type, WASM_I32V(2),
WASM_RTT_CANON(array_type))),
WASM_I32_ADD(
WASM_ARRAY_GET(array_type, WASM_LOCAL_GET(0), WASM_I32V(0)),
WASM_ARRAY_GET(array_type, WASM_LOCAL_GET(0), WASM_I32V(1))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(allocate_struct, 0);
tester.CheckResult(allocate_array, 0);
}
WASM_COMPILED_EXEC_TEST(RefTrivialCasts) {
// TODO(7748): Add tests for branch_on_*.
WasmGCTester tester(execution_tier);
byte type_index = tester.DefineStruct({F(wasm::kWasmI32, true)});
byte subtype_index = tester.DefineStruct(
{F(wasm::kWasmI32, true), F(wasm::kWasmS128, false)}, type_index);
ValueType sig_types[] = {kWasmS128, kWasmI32, kWasmF64};
FunctionSig sig(1, 2, sig_types);
byte sig_index = tester.DefineSignature(&sig);
const byte kRefTestNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST(WASM_REF_NULL(type_index), WASM_RTT_CANON(subtype_index)),
kExprEnd});
// Upcasts should not be optimized away for structural types.
const byte kRefTestUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST(WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
subtype_index, WASM_RTT_CANON(subtype_index)),
WASM_RTT_CANON(type_index)),
kExprEnd});
const byte kRefTestUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST(WASM_REF_NULL(subtype_index), WASM_RTT_CANON(type_index)),
kExprEnd});
const byte kRefTestUnrelated = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST(WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
subtype_index, WASM_RTT_CANON(subtype_index)),
WASM_RTT_CANON(sig_index)),
kExprEnd});
const byte kRefTestUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST(WASM_REF_NULL(subtype_index), WASM_RTT_CANON(sig_index)),
kExprEnd});
const byte kRefTestUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST(WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
type_index, WASM_RTT_CANON(type_index)),
WASM_RTT_CANON(sig_index)),
kExprEnd});
const byte kRefCastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST(WASM_REF_NULL(type_index),
WASM_RTT_CANON(subtype_index))),
kExprEnd});
const byte kRefCastUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(
WASM_REF_CAST(WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
subtype_index, WASM_RTT_CANON(subtype_index)),
WASM_RTT_CANON(type_index))),
kExprEnd});
const byte kRefCastUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST(WASM_REF_NULL(subtype_index),
WASM_RTT_CANON(type_index))),
kExprEnd});
const byte kRefCastUnrelated = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(
WASM_REF_CAST(WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
subtype_index, WASM_RTT_CANON(subtype_index)),
WASM_RTT_CANON(sig_index))),
kExprEnd});
const byte kRefCastUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST(WASM_REF_NULL(subtype_index),
WASM_RTT_CANON(sig_index))),
kExprEnd});
const byte kRefCastUnrelatedNonNullable =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST(
WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
type_index, WASM_RTT_CANON(type_index)),
WASM_RTT_CANON(sig_index))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kRefTestNull, 0);
tester.CheckResult(kRefTestUpcast, 1);
tester.CheckResult(kRefTestUpcastNull, 0);
tester.CheckResult(kRefTestUnrelated, 0);
tester.CheckResult(kRefTestUnrelatedNull, 0);
tester.CheckResult(kRefTestUnrelatedNonNullable, 0);
tester.CheckResult(kRefCastNull, 1);
tester.CheckResult(kRefCastUpcast, 0);
tester.CheckResult(kRefCastUpcastNull, 1);
tester.CheckHasThrown(kRefCastUnrelated);
tester.CheckResult(kRefCastUnrelatedNull, 1);
tester.CheckHasThrown(kRefCastUnrelatedNonNullable);
}
WASM_COMPILED_EXEC_TEST(RefTrivialCastsStatic) {
WasmGCTester tester(execution_tier);
byte type_index = tester.DefineStruct({F(wasm::kWasmI32, true)});
byte subtype_index = tester.DefineStruct(
{F(wasm::kWasmI32, true), F(wasm::kWasmS128, false)}, type_index);
ValueType sig_types[] = {kWasmS128, kWasmI32, kWasmF64};
FunctionSig sig(1, 2, sig_types);
byte sig_index = tester.DefineSignature(&sig);
const byte kRefTestNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST_STATIC(WASM_REF_NULL(type_index), subtype_index),
kExprEnd});
// Upcasts should be optimized away for nominal types.
const byte kRefTestUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST_STATIC(WASM_STRUCT_NEW_DEFAULT(subtype_index), type_index),
kExprEnd});
const byte kRefTestUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST_STATIC(WASM_REF_NULL(subtype_index), type_index),
kExprEnd});
const byte kRefTestUnrelatedNullable = tester.DefineFunction(
tester.sigs.i_v(), {refNull(subtype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype_index)),
WASM_REF_TEST_STATIC(WASM_LOCAL_GET(0), sig_index), kExprEnd});
const byte kRefTestUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST_STATIC(WASM_REF_NULL(subtype_index), sig_index),
kExprEnd});
const byte kRefTestUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_TEST_STATIC(WASM_STRUCT_NEW_DEFAULT(type_index), sig_index),
kExprEnd});
const byte kRefCastNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(
WASM_REF_NULL(type_index), subtype_index)),
kExprEnd});
const byte kRefCastUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(
WASM_STRUCT_NEW_DEFAULT(subtype_index), type_index)),
kExprEnd});
const byte kRefCastUpcastNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(
WASM_REF_NULL(subtype_index), type_index)),
kExprEnd});
const byte kRefCastUnrelatedNullable = tester.DefineFunction(
tester.sigs.i_v(), {refNull(subtype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype_index)),
WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(WASM_LOCAL_GET(0), sig_index)),
kExprEnd});
const byte kRefCastUnrelatedNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(
WASM_REF_NULL(subtype_index), sig_index)),
kExprEnd});
const byte kRefCastUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(
WASM_STRUCT_NEW_DEFAULT(type_index), sig_index)),
kExprEnd});
const byte kBrOnCastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(subtype_index), WASM_REF_NULL(type_index),
WASM_BR_ON_CAST_STATIC(0, subtype_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(type_index), WASM_STRUCT_NEW_DEFAULT(subtype_index),
WASM_BR_ON_CAST_STATIC(0, type_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(type_index), WASM_REF_NULL(subtype_index),
WASM_BR_ON_CAST_STATIC(0, type_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastUnrelatedNullable = tester.DefineFunction(
tester.sigs.i_v(), {refNull(subtype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype_index)),
WASM_BLOCK_R(refNull(sig_index), WASM_LOCAL_GET(0),
WASM_BR_ON_CAST_STATIC(0, sig_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(sig_index), WASM_REF_NULL(subtype_index),
WASM_BR_ON_CAST_STATIC(0, sig_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(sig_index), WASM_STRUCT_NEW_DEFAULT(subtype_index),
WASM_BR_ON_CAST_STATIC(0, sig_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastFailNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(type_index), WASM_REF_NULL(type_index),
WASM_BR_ON_CAST_STATIC_FAIL(0, subtype_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastFailUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(subtype_index),
WASM_STRUCT_NEW_DEFAULT(subtype_index),
WASM_BR_ON_CAST_STATIC_FAIL(0, type_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastFailUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(subtype_index), WASM_REF_NULL(subtype_index),
WASM_BR_ON_CAST_STATIC_FAIL(0, type_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastFailUnrelatedNullable = tester.DefineFunction(
tester.sigs.i_v(), {refNull(subtype_index)},
{WASM_LOCAL_SET(0, WASM_STRUCT_NEW_DEFAULT(subtype_index)),
WASM_BLOCK_R(refNull(subtype_index), WASM_LOCAL_GET(0),
WASM_BR_ON_CAST_STATIC_FAIL(0, sig_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastFailUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(subtype_index), WASM_REF_NULL(subtype_index),
WASM_BR_ON_CAST_STATIC_FAIL(0, sig_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
const byte kBrOnCastFailUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_BLOCK_R(refNull(subtype_index),
WASM_STRUCT_NEW_DEFAULT(subtype_index),
WASM_BR_ON_CAST_STATIC_FAIL(0, sig_index), WASM_DROP,
WASM_RETURN(WASM_I32V(0))),
WASM_DROP, WASM_I32V(1), WASM_END});
tester.CompileModule();
tester.CheckResult(kRefTestNull, 0);
tester.CheckResult(kRefTestUpcast, 1);
tester.CheckResult(kRefTestUpcastNull, 0);
tester.CheckResult(kRefTestUnrelatedNullable, 0);
tester.CheckResult(kRefTestUnrelatedNull, 0);
tester.CheckResult(kRefTestUnrelatedNonNullable, 0);
tester.CheckResult(kRefCastNull, 1);
tester.CheckResult(kRefCastUpcast, 0);
tester.CheckResult(kRefCastUpcastNull, 1);
tester.CheckHasThrown(kRefCastUnrelatedNullable);
tester.CheckResult(kRefCastUnrelatedNull, 1);
tester.CheckHasThrown(kRefCastUnrelatedNonNullable);
tester.CheckResult(kBrOnCastNull, 0);
tester.CheckResult(kBrOnCastUpcast, 1);
tester.CheckResult(kBrOnCastUpcastNull, 0);
tester.CheckResult(kBrOnCastUnrelatedNullable, 0);
tester.CheckResult(kBrOnCastUnrelatedNull, 0);
tester.CheckResult(kBrOnCastUnrelatedNonNullable, 0);
tester.CheckResult(kBrOnCastFailNull, 1);
tester.CheckResult(kBrOnCastFailUpcast, 0);
tester.CheckResult(kBrOnCastFailUpcastNull, 1);
tester.CheckResult(kBrOnCastFailUnrelatedNullable, 1);
tester.CheckResult(kBrOnCastFailUnrelatedNull, 1);
tester.CheckResult(kBrOnCastFailUnrelatedNonNullable, 1);
}
WASM_COMPILED_EXEC_TEST(TrivialAbstractCasts) {
// TODO(7748): Add tests for branch_on_*.
WasmGCTester tester(execution_tier);
byte type_index = tester.DefineArray(wasm::kWasmI32, true);
byte struct_type_index = tester.DefineStruct({F(wasm::kWasmI32, true)});
ValueType sig_types[] = {kWasmS128, kWasmI32, kWasmF64};
FunctionSig sig(1, 2, sig_types);
const byte kIsArrayNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_ARRAY(WASM_REF_NULL(kAnyRefCode)), kExprEnd});
const byte kIsArrayUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_ARRAY(WASM_ARRAY_NEW_DEFAULT_WITH_RTT(
type_index, WASM_I32V(10), WASM_RTT_CANON(type_index))),
kExprEnd});
const byte kIsArrayUpcastNullable = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(type_index)},
{WASM_LOCAL_SET(
0, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(type_index, WASM_I32V(10),
WASM_RTT_CANON(type_index))),
WASM_REF_IS_ARRAY(WASM_LOCAL_GET(0)), kExprEnd});
const byte kIsArrayUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_ARRAY(WASM_REF_NULL(type_index)), kExprEnd});
const byte kIsArrayUnrelated = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(struct_type_index)},
{WASM_LOCAL_SET(
0, WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
struct_type_index, WASM_RTT_CANON(struct_type_index))),
WASM_REF_IS_ARRAY(WASM_LOCAL_GET(0)), kExprEnd});
const byte kIsArrayUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_ARRAY(WASM_REF_NULL(kI31RefCode)), kExprEnd});
const byte kIsArrayUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_ARRAY(WASM_I31_NEW(WASM_I32V(10))), kExprEnd});
const byte kAsArrayNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_REF_NULL(kAnyRefCode))),
kExprEnd});
const byte kAsArrayUpcast = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_ARRAY_NEW_DEFAULT_WITH_RTT(
type_index, WASM_I32V(10), WASM_RTT_CANON(type_index)))),
kExprEnd});
const byte kAsArrayUpcastNullable = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(type_index)},
{WASM_LOCAL_SET(
0, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(type_index, WASM_I32V(10),
WASM_RTT_CANON(type_index))),
WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_LOCAL_GET(0))), kExprEnd});
const byte kAsArrayUpcastNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_REF_NULL(type_index))),
kExprEnd});
const byte kAsArrayUnrelated = tester.DefineFunction(
tester.sigs.i_v(), {ValueType::RefNull(struct_type_index)},
{WASM_LOCAL_SET(
0, WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
struct_type_index, WASM_RTT_CANON(struct_type_index))),
WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_LOCAL_GET(0))), kExprEnd});
const byte kAsArrayUnrelatedNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_REF_NULL(kI31RefCode))),
kExprEnd});
const byte kAsArrayUnrelatedNonNullable = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_I31_NEW(WASM_I32V(10)))),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kIsArrayNull, 0);
tester.CheckResult(kIsArrayUpcast, 1);
tester.CheckResult(kIsArrayUpcastNullable, 1);
tester.CheckResult(kIsArrayUpcastNull, 0);
tester.CheckResult(kIsArrayUnrelated, 0);
tester.CheckResult(kIsArrayUnrelatedNull, 0);
tester.CheckResult(kIsArrayUnrelatedNonNullable, 0);
tester.CheckHasThrown(kAsArrayNull);
tester.CheckResult(kAsArrayUpcast, 0);
tester.CheckResult(kAsArrayUpcastNullable, 0);
tester.CheckHasThrown(kAsArrayUpcastNull);
tester.CheckHasThrown(kAsArrayUnrelated);
tester.CheckHasThrown(kAsArrayUnrelatedNull);
tester.CheckHasThrown(kAsArrayUnrelatedNonNullable);
}
WASM_COMPILED_EXEC_TEST(NoDepthRtt) {
WasmGCTester tester(execution_tier);
const byte type_index = tester.DefineStruct({F(wasm::kWasmI32, true)});
const byte subtype_index = tester.DefineStruct(
{F(wasm::kWasmI32, true), F(wasm::kWasmI32, true)}, type_index);
ValueType kRttTypeNoDepth = ValueType::Rtt(type_index);
FunctionSig sig_t1_v_nd(1, 0, &kRttTypeNoDepth);
ValueType kRttSubtypeNoDepth = ValueType::Rtt(subtype_index);
FunctionSig sig_t2_v_nd(1, 0, &kRttSubtypeNoDepth);
const byte kRttSubtypeCanon = tester.DefineFunction(
&sig_t2_v_nd, {}, {WASM_RTT_CANON(subtype_index), kExprEnd});
const byte kTestCanon = tester.DefineFunction(
tester.sigs.i_v(), {refNull(type_index)},
{WASM_LOCAL_SET(
0, WASM_STRUCT_NEW(subtype_index, WASM_I32V(11), WASM_I32V(42))),
WASM_REF_TEST(WASM_LOCAL_GET(0), WASM_CALL_FUNCTION0(kRttSubtypeCanon)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(kTestCanon, 1);
}
WASM_COMPILED_EXEC_TEST(ArrayNewMap) {
WasmGCTester tester(execution_tier);
const byte type_index = tester.DefineArray(kWasmI32, true);
ValueType array_type = ValueType::Ref(type_index);
FunctionSig sig(1, 0, &array_type);
const byte array_new_with_rtt = tester.DefineFunction(
&sig, {},
{WASM_ARRAY_NEW_WITH_RTT(type_index, WASM_I32V(10), WASM_I32V(42),
WASM_RTT_CANON(type_index)),
kExprEnd});
const byte array_new_nominal = tester.DefineFunction(
&sig, {},
{WASM_ARRAY_NEW(type_index, WASM_I32V(10), WASM_I32V(42)), kExprEnd});
ValueType rtt_type = ValueType::Rtt(type_index);
FunctionSig rtt_canon_sig(1, 0, &rtt_type);
const byte kRttCanon = tester.DefineFunction(
&rtt_canon_sig, {}, {WASM_RTT_CANON(type_index), kExprEnd});
tester.CompileModule();
Handle<Object> map = tester.GetResultObject(kRttCanon).ToHandleChecked();
Handle<Object> result =
tester.GetResultObject(array_new_with_rtt).ToHandleChecked();
CHECK(result->IsWasmArray());
CHECK_EQ(Handle<WasmArray>::cast(result)->map(), *map);
result = tester.GetResultObject(array_new_nominal).ToHandleChecked();
CHECK(result->IsWasmArray());
CHECK_EQ(Handle<WasmArray>::cast(result)->map(), *map);
}
WASM_COMPILED_EXEC_TEST(FunctionRefs) {
WasmGCTester tester(execution_tier);
const byte func_index =
tester.DefineFunction(tester.sigs.i_v(), {}, {WASM_I32V(42), kExprEnd});
const byte sig_index = 0;
const byte other_sig_index = tester.DefineSignature(tester.sigs.d_d());
// This is just so func_index counts as "declared".
tester.AddGlobal(ValueType::RefNull(sig_index), false,
WasmInitExpr::RefFuncConst(func_index));
ValueType func_type = ValueType::RefNull(sig_index);
FunctionSig sig_func(1, 0, &func_type);
ValueType rtt0 = ValueType::Rtt(sig_index);
FunctionSig sig_rtt0(1, 0, &rtt0);
const byte rtt_canon = tester.DefineFunction(
&sig_rtt0, {}, {WASM_RTT_CANON(sig_index), kExprEnd});
const byte cast = tester.DefineFunction(
&sig_func, {kWasmFuncRef},
{WASM_LOCAL_SET(0, WASM_REF_FUNC(func_index)),
WASM_REF_CAST(WASM_LOCAL_GET(0), WASM_RTT_CANON(sig_index)), kExprEnd});
const byte cast_reference = tester.DefineFunction(
&sig_func, {}, {WASM_REF_FUNC(sig_index), kExprEnd});
const byte test = tester.DefineFunction(
tester.sigs.i_v(), {kWasmFuncRef},
{WASM_LOCAL_SET(0, WASM_REF_FUNC(func_index)),
WASM_REF_TEST(WASM_LOCAL_GET(0), WASM_RTT_CANON(sig_index)), kExprEnd});
const byte test_fail = tester.DefineFunction(
tester.sigs.i_v(), {kWasmFuncRef},
{WASM_LOCAL_SET(0, WASM_REF_FUNC(func_index)),
WASM_REF_TEST(WASM_LOCAL_GET(0), WASM_RTT_CANON(other_sig_index)),
kExprEnd});
tester.CompileModule();
Handle<Object> result_canon =
tester.GetResultObject(rtt_canon).ToHandleChecked();
CHECK(result_canon->IsMap());
Handle<Map> map_canon = Handle<Map>::cast(result_canon);
CHECK(map_canon->IsWasmInternalFunctionMap());
Handle<Object> result_cast = tester.GetResultObject(cast).ToHandleChecked();
CHECK(result_cast->IsWasmInternalFunction());
Handle<JSFunction> cast_function = Handle<JSFunction>::cast(
handle(Handle<WasmInternalFunction>::cast(result_cast)->external(),
tester.isolate()));
Handle<Object> result_cast_reference =
tester.GetResultObject(cast_reference).ToHandleChecked();
CHECK(result_cast_reference->IsWasmInternalFunction());
Handle<JSFunction> cast_function_reference = Handle<JSFunction>::cast(handle(
Handle<WasmInternalFunction>::cast(result_cast_reference)->external(),
tester.isolate()));
CHECK_EQ(cast_function->code().raw_instruction_start(),
cast_function_reference->code().raw_instruction_start());
tester.CheckResult(test, 1);
tester.CheckResult(test_fail, 0);
}
WASM_COMPILED_EXEC_TEST(CallRef) {
WasmGCTester tester(execution_tier);
byte callee = tester.DefineFunction(
tester.sigs.i_ii(), {},
{WASM_I32_ADD(WASM_LOCAL_GET(0), WASM_LOCAL_GET(1)), kExprEnd});
byte caller = tester.DefineFunction(
tester.sigs.i_i(), {},
{WASM_CALL_REF(WASM_REF_FUNC(callee), WASM_I32V(42), WASM_LOCAL_GET(0)),
kExprEnd});
// This is just so func_index counts as "declared".
tester.AddGlobal(ValueType::RefNull(0), false,
WasmInitExpr::RefFuncConst(callee));
tester.CompileModule();
tester.CheckResult(caller, 47, 5);
}
// Test that calling a function expecting any ref accepts nullref argument.
WASM_COMPILED_EXEC_TEST(CallNullRefImplicitConversion) {
const ValueType null_ref_types[] = {
kWasmFuncRef,
kWasmEqRef,
kWasmI31Ref.AsNullable(),
kWasmDataRef.AsNullable(),
kWasmArrayRef.AsNullable(),
kWasmAnyRef,
refNull(0), // struct
refNull(1), // array
refNull(2), // signature
};
for (ValueType ref_type : null_ref_types) {
CHECK(ref_type.is_nullable());
WasmGCTester tester(execution_tier);
byte struct_idx = tester.DefineStruct({F(wasm::kWasmI32, true)});
CHECK_EQ(struct_idx, 0);
byte array_idx = tester.DefineArray(kWasmI32, true);
CHECK_EQ(array_idx, 1);
FunctionSig dummySig(1, 0, &kWasmI32);
byte signature_idx = tester.DefineSignature(&dummySig);
CHECK_EQ(signature_idx, 2);
ValueType ref_sig_types[] = {kWasmI32, ref_type};
FunctionSig sig_ref(1, 1, ref_sig_types);
byte callee = tester.DefineFunction(
&sig_ref, {}, {WASM_REF_IS_NULL(WASM_LOCAL_GET(0)), kExprEnd});
byte caller = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_FUNCTION(callee, WASM_REF_NULL(kNoneCode)), kExprEnd});
tester.CompileModule();
tester.CheckResult(caller, 1);
}
}
WASM_COMPILED_EXEC_TEST(CastNullRef) {
WasmGCTester tester(execution_tier);
byte to_func = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_FUNC(WASM_REF_NULL(kNoneCode))), kExprEnd});
byte to_non_null = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_NON_NULL(WASM_REF_NULL(kNoneCode))),
kExprEnd});
byte to_array = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_ARRAY(WASM_REF_NULL(kNoneCode))),
kExprEnd});
byte to_data = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_DATA(WASM_REF_NULL(kNoneCode))), kExprEnd});
byte to_i31 = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_AS_I31(WASM_REF_NULL(kNoneCode))), kExprEnd});
byte struct_idx = tester.DefineStruct({F(wasm::kWasmI32, true)});
byte to_struct =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_IS_NULL(WASM_REF_CAST_STATIC(
WASM_REF_NULL(kNoneCode), struct_idx)),
kExprEnd});
tester.CompileModule();
// Generic casts trap on null.
tester.CheckHasThrown(to_func);
tester.CheckHasThrown(to_non_null);
tester.CheckHasThrown(to_array);
tester.CheckHasThrown(to_data);
tester.CheckHasThrown(to_i31);
// Static ref.cast succeeds.
tester.CheckResult(to_struct, 1);
}
WASM_COMPILED_EXEC_TEST(CallReftypeParameters) {
WasmGCTester tester(execution_tier);
byte type_index = tester.DefineStruct({F(wasm::kWasmI32, true)});
ValueType kRefType{refNull(type_index)};
ValueType sig_types[] = {kWasmI32, kRefType, kRefType, kRefType, kRefType,
kWasmI32, kWasmI32, kWasmI32, kWasmI32};
FunctionSig sig(1, 8, sig_types);
byte adder = tester.DefineFunction(
&sig, {},
{WASM_I32_ADD(
WASM_STRUCT_GET(type_index, 0, WASM_LOCAL_GET(0)),
WASM_I32_ADD(
WASM_STRUCT_GET(type_index, 0, WASM_LOCAL_GET(1)),
WASM_I32_ADD(
WASM_STRUCT_GET(type_index, 0, WASM_LOCAL_GET(2)),
WASM_I32_ADD(
WASM_STRUCT_GET(type_index, 0, WASM_LOCAL_GET(3)),
WASM_I32_ADD(
WASM_LOCAL_GET(4),
WASM_I32_ADD(WASM_LOCAL_GET(5),
WASM_I32_ADD(WASM_LOCAL_GET(6),
WASM_LOCAL_GET(7)))))))),
kExprEnd});
byte caller = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_FUNCTION(adder, WASM_STRUCT_NEW(type_index, WASM_I32V(2)),
WASM_STRUCT_NEW(type_index, WASM_I32V(4)),
WASM_STRUCT_NEW(type_index, WASM_I32V(8)),
WASM_STRUCT_NEW(type_index, WASM_I32V(16)),
WASM_I32V(32), WASM_I32V(64), WASM_I32V(128),
WASM_I32V(256)),
kExprEnd});
tester.CompileModule();
tester.CheckResult(caller, 510);
}
WASM_COMPILED_EXEC_TEST(AbstractTypeChecks) {
WasmGCTester tester(execution_tier);
byte array_index = tester.DefineArray(kWasmI32, true);
byte struct_index = tester.DefineStruct({F(kWasmI32, true)});
byte function_index =
tester.DefineFunction(tester.sigs.v_v(), {}, {kExprEnd});
byte sig_index = 2;
// This is just so func_index counts as "declared".
tester.AddGlobal(ValueType::RefNull(sig_index), false,
WasmInitExpr::RefFuncConst(function_index));
byte kDataCheckNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_DATA(WASM_REF_NULL(kAnyRefCode)), kExprEnd});
byte kArrayCheckNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_ARRAY(WASM_REF_NULL(kAnyRefCode)), kExprEnd});
byte kFuncCheckNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_FUNC(WASM_REF_NULL(kAnyRefCode)), kExprEnd});
byte kI31CheckNull = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_REF_IS_I31(WASM_REF_NULL(kAnyRefCode)), kExprEnd});
byte kDataCastNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_AS_DATA(WASM_REF_NULL(kAnyRefCode)),
WASM_DROP, WASM_I32V(1), kExprEnd});
byte kArrayCastNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_AS_ARRAY(WASM_REF_NULL(kAnyRefCode)),
WASM_DROP, WASM_I32V(1), kExprEnd});
byte kFuncCastNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_AS_FUNC(WASM_REF_NULL(kAnyRefCode)),
WASM_DROP, WASM_I32V(1), kExprEnd});
byte kI31CastNull =
tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_REF_AS_I31(WASM_REF_NULL(kAnyRefCode)),
WASM_DROP, WASM_I32V(1), kExprEnd});
#define TYPE_CHECK(type, value) \
tester.DefineFunction(tester.sigs.i_v(), {kWasmAnyRef}, \
{WASM_LOCAL_SET(0, WASM_SEQ(value)), \
WASM_REF_IS_##type(WASM_LOCAL_GET(0)), kExprEnd})
byte kDataCheckSuccess = TYPE_CHECK(
DATA, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kDataCheckFailure = TYPE_CHECK(DATA, WASM_I31_NEW(WASM_I32V(42)));
byte kArrayCheckSuccess = TYPE_CHECK(
ARRAY, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kArrayCheckFailure =
TYPE_CHECK(ARRAY, WASM_STRUCT_NEW_DEFAULT_WITH_RTT(
struct_index, WASM_RTT_CANON(struct_index)));
byte kFuncCheckSuccess = TYPE_CHECK(FUNC, WASM_REF_FUNC(function_index));
byte kFuncCheckFailure = TYPE_CHECK(
FUNC, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kI31CheckSuccess = TYPE_CHECK(I31, WASM_I31_NEW(WASM_I32V(42)));
byte kI31CheckFailure = TYPE_CHECK(
I31, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
#undef TYPE_CHECK
#define TYPE_CAST(type, value) \
tester.DefineFunction(tester.sigs.i_v(), {kWasmAnyRef}, \
{WASM_LOCAL_SET(0, WASM_SEQ(value)), \
WASM_REF_AS_##type(WASM_LOCAL_GET(0)), WASM_DROP, \
WASM_I32V(1), kExprEnd})
byte kDataCastSuccess = TYPE_CAST(
DATA, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kDataCastFailure = TYPE_CAST(DATA, WASM_I31_NEW(WASM_I32V(42)));
byte kArrayCastSuccess = TYPE_CAST(
DATA, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kArrayCastFailure = TYPE_CAST(DATA, WASM_I31_NEW(WASM_I32V(42)));
byte kFuncCastSuccess = TYPE_CAST(FUNC, WASM_REF_FUNC(function_index));
byte kFuncCastFailure = TYPE_CAST(
FUNC, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kI31CastSuccess = TYPE_CAST(I31, WASM_I31_NEW(WASM_I32V(42)));
byte kI31CastFailure = TYPE_CAST(
I31, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
#undef TYPE_CAST
// If the branch is not taken, we return 0. If it is taken, then the respective
// type check should succeed, and we return 1.
#define BR_ON(TYPE, type, value) \
tester.DefineFunction( \
tester.sigs.i_v(), {kWasmAnyRef}, \
{WASM_LOCAL_SET(0, WASM_SEQ(value)), \
WASM_REF_IS_##TYPE(WASM_BLOCK_R(kWasm##type##Ref, WASM_LOCAL_GET(0), \
WASM_BR_ON_##TYPE(0), \
WASM_RETURN(WASM_I32V(0)))), \
kExprEnd})
byte kBrOnDataTaken =
BR_ON(DATA, Data,
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kBrOnDataNotTaken = BR_ON(DATA, Data, WASM_REF_FUNC(function_index));
byte kBrOnFuncTaken = BR_ON(FUNC, Func, WASM_REF_FUNC(function_index));
byte kBrOnFuncNotTaken = BR_ON(FUNC, Func, WASM_I31_NEW(WASM_I32V(42)));
byte kBrOnArrayTaken =
BR_ON(ARRAY, Array,
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kBrOnArrayNotTaken = BR_ON(ARRAY, Array, WASM_I31_NEW(WASM_I32V(42)));
byte kBrOnI31Taken = BR_ON(I31, I31, WASM_I31_NEW(WASM_I32V(42)));
byte kBrOnI31NotTaken =
BR_ON(I31, I31,
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
#undef BR_ON
// If the branch is not taken, we return 1. If it is taken, then the respective
// type check should fail, and we return 0.
#define BR_ON_NON(TYPE, type, value) \
tester.DefineFunction( \
tester.sigs.i_v(), {kWasmAnyRef}, \
{WASM_LOCAL_SET(0, WASM_SEQ(value)), \
WASM_REF_IS_##TYPE(WASM_BLOCK_R(kWasmAnyRef, WASM_LOCAL_GET(0), \
WASM_BR_ON_NON_##TYPE(0), \
WASM_RETURN(WASM_I32V(1)))), \
kExprEnd})
byte kBrOnNonDataNotTaken =
BR_ON_NON(DATA, Data,
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kBrOnNonDataTaken = BR_ON_NON(DATA, Data, WASM_REF_FUNC(function_index));
byte kBrOnNonFuncNotTaken =
BR_ON_NON(FUNC, Func, WASM_REF_FUNC(function_index));
byte kBrOnNonFuncTaken = BR_ON_NON(FUNC, Func, WASM_I31_NEW(WASM_I32V(42)));
byte kBrOnNonArrayNotTaken =
BR_ON_NON(ARRAY, Array,
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
byte kBrOnNonArrayTaken =
BR_ON_NON(ARRAY, Array, WASM_I31_NEW(WASM_I32V(42)));
byte kBrOnNonI31NotTaken = BR_ON_NON(I31, I31, WASM_I31_NEW(WASM_I32V(42)));
byte kBrOnNonI31Taken =
BR_ON_NON(I31, I31,
WASM_ARRAY_NEW_DEFAULT_WITH_RTT(array_index, WASM_I32V(10),
WASM_RTT_CANON(array_index)));
#undef BR_ON_NON
tester.CompileModule();
tester.CheckResult(kDataCheckNull, 0);
tester.CheckResult(kArrayCheckNull, 0);
tester.CheckResult(kFuncCheckNull, 0);
tester.CheckResult(kI31CheckNull, 0);
tester.CheckHasThrown(kDataCastNull);
tester.CheckHasThrown(kArrayCastNull);
tester.CheckHasThrown(kFuncCastNull);
tester.CheckHasThrown(kI31CastNull);
tester.CheckResult(kDataCheckSuccess, 1);
tester.CheckResult(kArrayCheckSuccess, 1);
tester.CheckResult(kFuncCheckSuccess, 1);
tester.CheckResult(kI31CheckSuccess, 1);
tester.CheckResult(kDataCheckFailure, 0);
tester.CheckResult(kArrayCheckFailure, 0);
tester.CheckResult(kFuncCheckFailure, 0);
tester.CheckResult(kI31CheckFailure, 0);
tester.CheckResult(kDataCastSuccess, 1);
tester.CheckResult(kArrayCastSuccess, 1);
tester.CheckResult(kFuncCastSuccess, 1);
tester.CheckResult(kI31CastSuccess, 1);
tester.CheckHasThrown(kDataCastFailure);
tester.CheckHasThrown(kArrayCastFailure);
tester.CheckHasThrown(kFuncCastFailure);
tester.CheckHasThrown(kI31CastFailure);
tester.CheckResult(kBrOnDataTaken, 1);
tester.CheckResult(kBrOnDataNotTaken, 0);
tester.CheckResult(kBrOnFuncTaken, 1);
tester.CheckResult(kBrOnFuncNotTaken, 0);
tester.CheckResult(kBrOnArrayTaken, 1);
tester.CheckResult(kBrOnArrayNotTaken, 0);
tester.CheckResult(kBrOnI31Taken, 1);
tester.CheckResult(kBrOnI31NotTaken, 0);
tester.CheckResult(kBrOnNonDataTaken, 0);
tester.CheckResult(kBrOnNonDataNotTaken, 1);
tester.CheckResult(kBrOnNonFuncTaken, 0);
tester.CheckResult(kBrOnNonFuncNotTaken, 1);
tester.CheckResult(kBrOnNonArrayTaken, 0);
tester.CheckResult(kBrOnNonArrayNotTaken, 1);
tester.CheckResult(kBrOnNonI31Taken, 0);
tester.CheckResult(kBrOnNonI31NotTaken, 1);
}
WASM_COMPILED_EXEC_TEST(BasicI31) {
WasmGCTester tester(execution_tier);
const byte kSigned = tester.DefineFunction(
tester.sigs.i_i(), {},
{WASM_I31_GET_S(WASM_I31_NEW(WASM_LOCAL_GET(0))), kExprEnd});
const byte kUnsigned = tester.DefineFunction(
tester.sigs.i_i(), {},
{WASM_I31_GET_U(WASM_I31_NEW(WASM_LOCAL_GET(0))), kExprEnd});
tester.CompileModule();
tester.CheckResult(kSigned, 123, 123);
tester.CheckResult(kUnsigned, 123, 123);
// Truncation:
tester.CheckResult(kSigned, 0x1234, static_cast<int32_t>(0x80001234));
tester.CheckResult(kUnsigned, 0x1234, static_cast<int32_t>(0x80001234));
// Sign/zero extension:
tester.CheckResult(kSigned, -1, 0x7FFFFFFF);
tester.CheckResult(kUnsigned, 0x7FFFFFFF, 0x7FFFFFFF);
}
// This flushed out a few bugs, so it serves as a regression test. It can also
// be modified (made to run longer) to measure performance of casts.
WASM_COMPILED_EXEC_TEST(CastsBenchmark) {
WasmGCTester tester(execution_tier);
const byte SuperType = tester.DefineStruct({F(wasm::kWasmI32, true)});
const byte SubType = tester.DefineStruct(
{F(wasm::kWasmI32, true), F(wasm::kWasmI32, true)}, SuperType);
ValueType kDataRefNull = ValueType::RefNull(HeapType::kData);
const byte ListType = tester.DefineArray(kDataRefNull, true);
const byte List =
tester.AddGlobal(ValueType::RefNull(ListType), true,
WasmInitExpr::RefNullConst(
static_cast<HeapType::Representation>(ListType)));
const byte RttSuper = tester.AddGlobal(
ValueType::Rtt(SuperType), false,
WasmInitExpr::RttCanon(static_cast<HeapType::Representation>(SuperType)));
const byte RttList = tester.AddGlobal(
ValueType::Rtt(ListType), false,
WasmInitExpr::RttCanon(static_cast<HeapType::Representation>(ListType)));
const uint32_t kListLength = 1024;
const uint32_t i = 0;
const byte Prepare = tester.DefineFunction(
tester.sigs.i_v(), {wasm::kWasmI32},
{// List = new eqref[kListLength];
WASM_GLOBAL_SET(List, WASM_ARRAY_NEW_DEFAULT_WITH_RTT(
ListType, WASM_I32V(kListLength),
WASM_GLOBAL_GET(RttList))),
// for (int i = 0; i < kListLength; ) {
// List[i] = new Super(i);
// i++;
// List[i] = new Sub(i, 0);
// i++;
// }
WASM_LOCAL_SET(i, WASM_I32V_1(0)),
WASM_LOOP(
WASM_ARRAY_SET(ListType, WASM_GLOBAL_GET(List), WASM_LOCAL_GET(i),
WASM_STRUCT_NEW(SuperType, WASM_LOCAL_GET(i))),
WASM_LOCAL_SET(i, WASM_I32_ADD(WASM_LOCAL_GET(i), WASM_I32V_1(1))),
WASM_ARRAY_SET(
ListType, WASM_GLOBAL_GET(List), WASM_LOCAL_GET(i),
WASM_STRUCT_NEW(SubType, WASM_LOCAL_GET(i), WASM_I32V_1(0))),
WASM_LOCAL_SET(i, WASM_I32_ADD(WASM_LOCAL_GET(i), WASM_I32V_1(1))),
WASM_BR_IF(0,
WASM_I32_NE(WASM_LOCAL_GET(i), WASM_I32V(kListLength)))),
// return 42; // Dummy value, due to test framework.
WASM_I32V_1(42), kExprEnd});
const uint32_t sum = 1; // Index of the local.
const uint32_t list = 2;
const uint32_t kLoops = 2;
const uint32_t kIterations = kLoops * kListLength;
const byte Main = tester.DefineFunction(
tester.sigs.i_v(),
{
wasm::kWasmI32,
wasm::kWasmI32,
ValueType::RefNull(ListType),
},
{WASM_LOCAL_SET(list, WASM_GLOBAL_GET(List)),
// sum = 0;
WASM_LOCAL_SET(sum, WASM_I32V_1(0)),
// for (int i = 0; i < kIterations; i++) {
// sum += ref.cast<super>(List[i & kListLength]).x
// }
WASM_LOCAL_SET(i, WASM_I32V_1(0)),
WASM_LOOP(
WASM_LOCAL_SET(
sum, WASM_I32_ADD(
WASM_LOCAL_GET(sum),
WASM_STRUCT_GET(
SuperType, 0,
WASM_REF_CAST(
WASM_ARRAY_GET(
ListType, WASM_LOCAL_GET(list),
WASM_I32_AND(WASM_LOCAL_GET(i),
WASM_I32V(kListLength - 1))),
WASM_GLOBAL_GET(RttSuper))))),
WASM_LOCAL_SET(i, WASM_I32_ADD(WASM_LOCAL_GET(i), WASM_I32V_1(1))),
WASM_BR_IF(0,
WASM_I32_LTS(WASM_LOCAL_GET(i), WASM_I32V(kIterations)))),
// return sum;
WASM_LOCAL_GET(sum), kExprEnd});
tester.CompileModule();
tester.CheckResult(Prepare, 42);
// Time this section to get a benchmark for subtyping checks.
// Note: if you bump kIterations or kListLength, you may have to take i32
// overflow into account.
tester.CheckResult(Main, (kListLength * (kListLength - 1) / 2) * kLoops);
}
WASM_COMPILED_EXEC_TEST(GlobalInitReferencingGlobal) {
WasmGCTester tester(execution_tier);
const byte from = tester.AddGlobal(kWasmI32, false, WasmInitExpr(42));
const byte to =
tester.AddGlobal(kWasmI32, false, WasmInitExpr::GlobalGet(from));
const byte func = tester.DefineFunction(tester.sigs.i_v(), {},
{WASM_GLOBAL_GET(to), kExprEnd});
tester.CompileModule();
tester.CheckResult(func, 42);
}
WASM_COMPILED_EXEC_TEST(GCTables) {
WasmGCTester tester(execution_tier);
byte super_struct = tester.DefineStruct({F(kWasmI32, false)});
byte sub_struct = tester.DefineStruct({F(kWasmI32, false), F(kWasmI32, true)},
super_struct);
FunctionSig* super_sig =
FunctionSig::Build(tester.zone(), {kWasmI32}, {refNull(sub_struct)});
byte super_sig_index = tester.DefineSignature(super_sig);
FunctionSig* sub_sig =
FunctionSig::Build(tester.zone(), {kWasmI32}, {refNull(super_struct)});
byte sub_sig_index = tester.DefineSignature(sub_sig, super_sig_index);
tester.DefineTable(refNull(super_sig_index), 10, 10);
byte super_func = tester.DefineFunction(
super_sig_index, {},
{WASM_I32_ADD(WASM_STRUCT_GET(sub_struct, 0, WASM_LOCAL_GET(0)),
WASM_STRUCT_GET(sub_struct, 1, WASM_LOCAL_GET(0))),
WASM_END});
byte sub_func = tester.DefineFunction(
sub_sig_index, {},
{WASM_STRUCT_GET(super_struct, 0, WASM_LOCAL_GET(0)), WASM_END});
byte setup_func = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_TABLE_SET(0, WASM_I32V(0), WASM_REF_NULL(super_sig_index)),
WASM_TABLE_SET(0, WASM_I32V(1), WASM_REF_FUNC(super_func)),
WASM_TABLE_SET(0, WASM_I32V(2), WASM_REF_FUNC(sub_func)), WASM_I32V(0),
WASM_END});
byte super_struct_producer = tester.DefineFunction(
FunctionSig::Build(tester.zone(), {ref(super_struct)}, {}), {},
{WASM_STRUCT_NEW(super_struct, WASM_I32V(-5)), WASM_END});
byte sub_struct_producer = tester.DefineFunction(
FunctionSig::Build(tester.zone(), {ref(sub_struct)}, {}), {},
{WASM_STRUCT_NEW(sub_struct, WASM_I32V(7), WASM_I32V(11)), WASM_END});
// Calling a null entry should trap.
byte call_null = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_INDIRECT(super_sig_index,
WASM_CALL_FUNCTION0(sub_struct_producer),
WASM_I32V(0)),
WASM_END});
// Calling with a signature identical to the type of the table should work,
// provided the entry has the same signature.
byte call_same_type = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_INDIRECT(super_sig_index,
WASM_CALL_FUNCTION0(sub_struct_producer),
WASM_I32V(1)),
WASM_END});
// Calling with a signature that is a subtype of the type of the table should
// work, provided the entry has the same signature.
byte call_subtype = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_INDIRECT(sub_sig_index,
WASM_CALL_FUNCTION0(super_struct_producer),
WASM_I32V(2)),
WASM_END});
// Calling with a signature that is mismatched to that of the entry should
// trap.
byte call_type_mismatch = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_INDIRECT(super_sig_index,
WASM_CALL_FUNCTION0(sub_struct_producer),
WASM_I32V(2)),
WASM_END});
// Getting a table element and then calling it with call_ref should work.
byte table_get_and_call_ref = tester.DefineFunction(
tester.sigs.i_v(), {},
{WASM_CALL_REF(WASM_TABLE_GET(0, WASM_I32V(2)),
WASM_CALL_FUNCTION0(sub_struct_producer)),
WASM_END});
// Only here so these functions count as "declared".
tester.AddGlobal(refNull(super_sig_index), false,
WasmInitExpr::RefFuncConst(super_func));
tester.AddGlobal(refNull(sub_sig_index), false,
WasmInitExpr::RefFuncConst(sub_func));
tester.CompileModule();
tester.CheckResult(setup_func, 0);
tester.CheckHasThrown(call_null);
tester.CheckResult(call_same_type, 18);
tester.CheckResult(call_subtype, -5);
tester.CheckHasThrown(call_type_mismatch);
tester.CheckResult(table_get_and_call_ref, 7);
}
WASM_COMPILED_EXEC_TEST(JsAccess) {
WasmGCTester tester(execution_tier);
const byte type_index = tester.DefineStruct({F(wasm::kWasmI32, true)});
ValueType kRefType = ref(type_index);
ValueType kSupertypeToI[] = {kWasmI32, kWasmDataRef};
FunctionSig sig_t_v(1, 0, &kRefType);
FunctionSig sig_super_v(1, 0, &kWasmDataRef);
FunctionSig sig_i_super(1, 1, kSupertypeToI);
tester.DefineExportedFunction(
"disallowed", &sig_t_v,
{WASM_STRUCT_NEW(type_index, WASM_I32V(42)), kExprEnd});
// Same code, different signature.
tester.DefineExportedFunction(
"producer", &sig_super_v,
{WASM_STRUCT_NEW(type_index, WASM_I32V(42)), kExprEnd});
tester.DefineExportedFunction(
"consumer", &sig_i_super,
{WASM_STRUCT_GET(
type_index, 0,
WASM_REF_CAST(WASM_LOCAL_GET(0), WASM_RTT_CANON(type_index))),
kExprEnd});
tester.CompileModule();
Isolate* isolate = tester.isolate();
TryCatch try_catch(reinterpret_cast<v8::Isolate*>(isolate));
MaybeHandle<Object> maybe_result =
tester.CallExportedFunction("disallowed", 0, nullptr);
CHECK(maybe_result.is_null());
CHECK(try_catch.HasCaught());
try_catch.Reset();
isolate->clear_pending_exception();
maybe_result = tester.CallExportedFunction("producer", 0, nullptr);
if (maybe_result.is_null()) {
FATAL("Calling 'producer' failed: %s",
*v8::String::Utf8Value(reinterpret_cast<v8::Isolate*>(isolate),
try_catch.Message()->Get()));
}
{
Handle<Object> args[] = {maybe_result.ToHandleChecked()};
maybe_result = tester.CallExportedFunction("consumer", 1, args);
}
if (maybe_result.is_null()) {
FATAL("Calling 'consumer' failed: %s",
*v8::String::Utf8Value(reinterpret_cast<v8::Isolate*>(isolate),
try_catch.Message()->Get()));
}
Handle<Object> result = maybe_result.ToHandleChecked();
CHECK(result->IsSmi());
CHECK_EQ(42, Smi::cast(*result).value());
// Calling {consumer} with any other object (e.g. the Smi we just got as
// {result}) should trap.
{
Handle<Object> args[] = {result};
maybe_result = tester.CallExportedFunction("consumer", 1, args);
}
CHECK(maybe_result.is_null());
CHECK(try_catch.HasCaught());
try_catch.Reset();
isolate->clear_pending_exception();
}
} // namespace test_gc
} // namespace wasm
} // namespace internal
} // namespace v8
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