[wasm] Support validation of asm.js modules with != 3 args.

src/compiler.cc

 // Copyright 2012 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 "src/compiler.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "src/asmjs/asm-js.h"
@@ skipping 458 matching lines @@
 int CodeAndMetadataSize(CompilationInfo* info) {
   if (info->has_bytecode_array()) {
     return info->bytecode_array()->SizeIncludingMetadata();
   }
   return info->code()->SizeIncludingMetadata();
 }
 
 bool GenerateUnoptimizedCode(CompilationInfo* info) {
   bool success;
   EnsureFeedbackMetadata(info);
-  if (FLAG_validate_asm && info->scope()->asm_module()) {
+  if (FLAG_validate_asm && info->scope()->asm_module() &&
+      !info->shared_info()->is_asm_wasm_broken()) {
     MaybeHandle<FixedArray> wasm_data;
     wasm_data = AsmJs::ConvertAsmToWasm(info->parse_info());
     if (!wasm_data.is_null()) {
       info->shared_info()->set_asm_wasm_data(*wasm_data.ToHandleChecked());
       info->SetCode(info->isolate()->builtins()->InstantiateAsmJs());
       return true;
     }
   }
   if (ShouldUseIgnition(info)) {
     success = interpreter::Interpreter::MakeBytecode(info);
@@ skipping 939 matching lines @@
     if (shared->code()->kind() == Code::FUNCTION &&
         shared->code()->has_reloc_info_for_serialization()) {
       unoptimized.PrepareForSerializing();
     }
     EnsureFeedbackMetadata(&unoptimized);
     if (!FullCodeGenerator::MakeCode(&unoptimized)) return false;
 
     // TODO(4280): For now we play it safe and remove the bytecode array when we
     // switch to baseline code. We might consider keeping around the bytecode so
     // that it can be used as the "source of truth" eventually.
-    if (!FLAG_ignition_preserve_bytecode) shared->ClearBytecodeArray();
+    if (shared->HasBytecodeArray()) {
+      if (!FLAG_ignition_preserve_bytecode) shared->ClearBytecodeArray();
+    }
 
     // The scope info might not have been set if a lazily compiled
     // function is inlined before being called for the first time.
     if (shared->scope_info() == ScopeInfo::Empty(info->isolate())) {
       InstallSharedScopeInfo(info, shared);
     }
 
     // Install compilation result on the shared function info
     shared->EnableDeoptimizationSupport(*unoptimized.code());
 
@@ skipping 509 matching lines @@
     DCHECK(shared->is_compiled());
     function->set_literals(cached.literals);
   } else if (shared->is_compiled()) {
     // TODO(mvstanton): pass pretenure flag to EnsureLiterals.
     JSFunction::EnsureLiterals(function);
   }
 }
 
 }  // namespace internal
 }  // namespace v8