Reland "[wasm] Ensure that only TurboFan code is serialized"

This is a reland of 60ee70bb.
The wasm c-api flakes were fixed in https://crrev.com/c/2349293.

Original change's description:
> [wasm] Ensure that only TurboFan code is serialized
>
> We have the implicit assumption that Liftoff code will never be
> serialized, and we start relying on that when implementing new features
> (debugging, dynamic tiering).
>
> This CL makes the serializer fail if the module contains any Liftoff
> code. Existing tests are changed to ensure that we fully tiered up
> before serializing a module (similar to the logic in Chromium).
> The "wasm-clone-module" test needs to serialize the module before
> enabling the debugger.
>
> Note that chrome currently only serializes a module after it fully
> tiered up, so that should be fine. If other embedders need the ability
> to serialize a module in an arbitrary state, we will have to fix this
> later. With this CL we will be on the safe side though and (gracefully)
> fail serialization instead of accidentally serializing Liftoff code.
>
> R=ahaas@chromium.org
>
> Bug: v8:10777
> Change-Id: I1245e5f7fda3447a544c1e3525e1239cde759174
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336799
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69276}

Bug: v8:10777
Change-Id: I2a7c1429812ca46d88a2902b8e0a7b7e3d638b56
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2349290Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69335}

src/wasm/wasm-serialization.cc

@@ -280,8 +280,8 @@ class V8_EXPORT_PRIVATE NativeModuleSerializer {
 
  private:
   size_t MeasureCode(const WasmCode*) const;
-  void WriteHeader(Writer* writer);
-  void WriteCode(const WasmCode*, Writer* writer);
+  void WriteHeader(Writer*);
+  bool WriteCode(const WasmCode*, Writer*);
 
   const NativeModule* const native_module_;
   Vector<WasmCode* const> code_table_;
@@ -301,6 +301,9 @@ NativeModuleSerializer::NativeModuleSerializer(
 size_t NativeModuleSerializer::MeasureCode(const WasmCode* code) const {
   if (code == nullptr) return sizeof(bool);
   DCHECK_EQ(WasmCode::kFunction, code->kind());
+  if (FLAG_wasm_lazy_compilation && code->tier() != ExecutionTier::kTurbofan) {
+    return sizeof(bool);
+  }
   return kCodeHeaderSize + code->instructions().size() +
          code->reloc_info().size() + code->source_positions().size() +
          code->protected_instructions_data().size();
@@ -322,13 +325,23 @@ void NativeModuleSerializer::WriteHeader(Writer* writer) {
   writer->Write(native_module_->num_imported_functions());
 }
 
-void NativeModuleSerializer::WriteCode(const WasmCode* code, Writer* writer) {
+bool NativeModuleSerializer::WriteCode(const WasmCode* code, Writer* writer) {
+  DCHECK_IMPLIES(!FLAG_wasm_lazy_compilation, code != nullptr);
   if (code == nullptr) {
     writer->Write(false);
-    return;
+    return true;
   }
-  writer->Write(true);
   DCHECK_EQ(WasmCode::kFunction, code->kind());
+  // Only serialize TurboFan code, as Liftoff code can contain breakpoints or
+  // non-relocatable constants.
+  if (code->tier() != ExecutionTier::kTurbofan) {
+    if (FLAG_wasm_lazy_compilation) {
+      writer->Write(false);
+      return true;
+    }
+    return false;
+  }
+  writer->Write(true);
   // Write the size of the entire code section, followed by the code header.
   writer->Write(code->constant_pool_offset());
   writer->Write(code->safepoint_table_offset());
@@ -415,6 +428,7 @@ void NativeModuleSerializer::WriteCode(const WasmCode* code, Writer* writer) {
   if (code_start != serialized_code_start) {
     memcpy(serialized_code_start, code_start, code_size);
   }
+  return true;
 }
 
 bool NativeModuleSerializer::Write(Writer* writer) {
@@ -424,7 +438,7 @@ bool NativeModuleSerializer::Write(Writer* writer) {
   WriteHeader(writer);
 
   for (WasmCode* code : code_table_) {
-    WriteCode(code, writer);
+    if (!WriteCode(code, writer)) return false;
   }
   return true;
 }

test/cctest/cctest.status

@@ -182,6 +182,17 @@
   'test-cpu-profiler/MultipleIsolates': [SKIP],
 }],  # variant == nooptimization and (arch == arm or arch == arm64) and simulator_run
 
+##############################################################################
+['variant == nooptimization', {
+  # Wasm serialization relies on TurboFan to be available, hence does not work
+  # in the 'nooptimization' variant.
+  'test-wasm-serialization/*': [SKIP],
+  'test-streaming-compilation/SingleThreadedTestDeserializationBypassesCompilation': [SKIP],
+  'test-streaming-compilation/SingleThreadedTestDeserializationFails': [SKIP],
+  'test-streaming-compilation/AsyncTestDeserializationFails': [SKIP],
+  'test-streaming-compilation/AsyncTestDeserializationBypassesCompilation': [SKIP],
+}],  # variant == nooptimization
+
 ##############################################################################
 ['variant == no_lfa', {
   # https://crbug.com/v8/10219

test/mjsunit/regress/wasm/regress-808848.js

@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax
+// The test needs --wasm-tier-up because we can't serialize and deserialize
+// Liftoff code.
+// Flags: --allow-natives-syntax --wasm-tier-up
 
 load('test/mjsunit/wasm/wasm-module-builder.js');
 

test/mjsunit/regress/wasm/regress-808980.js

@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --throws
+// The test needs --wasm-tier-up because we can't serialize and deserialize
+// Liftoff code.
+// Flags: --allow-natives-syntax --throws --wasm-tier-up
 
 load('test/mjsunit/wasm/wasm-module-builder.js');
 let kTableSize = 3;

test/mjsunit/wasm/compiled-module-serialization.js

@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-wasm --allow-natives-syntax --expose-gc
+// The test needs --wasm-tier-up because we can't serialize and deserialize
+// Liftoff code.
+// Flags: --expose-wasm --allow-natives-syntax --expose-gc --wasm-tier-up
 
 load("test/mjsunit/wasm/wasm-module-builder.js");
 

test/mjsunit/wasm/print-code.js

@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --print-wasm-code
+// The test needs --wasm-tier-up because we can't serialize and deserialize
+// Liftoff code.
+// Flags: --allow-natives-syntax --print-wasm-code --wasm-tier-up
 
 // Just test that printing the code of the following wasm modules does not
 // crash.

test/wasm-api-tests/serialize.cc

@@ -27,6 +27,7 @@ TEST_F(WasmCapiTest, Serialize) {
   Compile();
 
   vec<byte_t> serialized = module()->serialize();
+  EXPECT_TRUE(serialized);  // Serialization succeeded.
   own<Module> deserialized = Module::deserialize(store(), serialized);
 
   own<FuncType> callback_type =