[wasm] asm.js - Parse and convert asm.js to wasm a function at a time.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 073800d8167d4583c3091880555cb5b474ed11c6..279641c3a916427ccc26309f873193e33732f4b7 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -854,7 +854,12 @@ FunctionLiteral* Parser::ParseFunction(Isolate* isolate, ParseInfo* info) {
     timer.Start();
   }
   Handle<SharedFunctionInfo> shared_info = info->shared_info();
-  DeserializeScopeChain(info, info->maybe_outer_scope_info());
+  if (!info->script_scope()) {
+    DeserializeScopeChain(info, info->maybe_outer_scope_info());
+  } else {
+    original_scope_ = new (info->zone()) DeclarationScope(
+        info->zone(), info->script_scope()->outer_scope(), FUNCTION_SCOPE);
+  }
 
   // Initialize parser state.
   source = String::Flatten(source);
@@ -2610,8 +2615,6 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
   //   FunctionExpression; even without enclosing parentheses it might be
   //   immediately invoked.
   // - The function literal shouldn't be hinted to eagerly compile.
-  // - For asm.js functions the body needs to be available when module
-  //   validation is active, because we examine the entire module at once.
 
   // Inner functions will be parsed using a temporary Zone. After parsing, we
   // will migrate unresolved variable into a Scope in the main Zone.
@@ -2621,8 +2624,7 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
            ? can_preparse
            : (is_lazy_top_level_function ||
               (allow_lazy_ && function_type == FunctionLiteral::kDeclaration &&
-               eager_compile_hint == FunctionLiteral::kShouldLazyCompile))) &&
-      !(FLAG_validate_asm && scope()->IsAsmModule());
+               eager_compile_hint == FunctionLiteral::kShouldLazyCompile)));
   bool is_lazy_inner_function =
       use_temp_zone && FLAG_lazy_inner_functions && !is_lazy_top_level_function;