Handle stack frames differently inside and on the boundary of wasm.

src/compiler/wasm-compiler.cc

 // Copyright 2015 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/wasm-compiler.h"
 
 #include "src/isolate-inl.h"
 
 #include "src/base/platform/platform.h"
 
@@ skipping 2215 matching lines @@
       OFStream os(stdout);
       os << "-- Graph after change lowering -- " << std::endl;
       os << AsRPO(graph);
     }
 
     // Schedule and compile to machine code.
     int params = static_cast<int>(
         module->GetFunctionSignature(index)->parameter_count());
     CallDescriptor* incoming = Linkage::GetJSCallDescriptor(
         &zone, false, params + 1, CallDescriptor::kNoFlags);
-    // TODO(titzer): this is technically a WASM wrapper, not a wasm function.
-    Code::Flags flags = Code::ComputeFlags(Code::WASM_FUNCTION);
+    Code::Flags flags =
+        Code::ComputeWasmFlags(Code::WASM_FUNCTION, Code::JS_TO_WASM);
     bool debugging =
 #if DEBUG
         true;
 #else
         FLAG_print_opt_code || FLAG_trace_turbo || FLAG_trace_turbo_graph;
 #endif
     const char* func_name = "js-to-wasm";
 
     static unsigned id = 0;
     Vector<char> buffer;
@@ skipping 58 matching lines @@
 
     if (FLAG_trace_turbo_graph) {  // Simple textual RPO.
       OFStream os(stdout);
       os << "-- Graph after change lowering -- " << std::endl;
       os << AsRPO(graph);
     }
 
     // Schedule and compile to machine code.
     CallDescriptor* incoming =
         wasm::ModuleEnv::GetWasmCallDescriptor(&zone, sig);
-    // TODO(titzer): this is technically a WASM wrapper, not a wasm function.
-    Code::Flags flags = Code::ComputeFlags(Code::WASM_FUNCTION);
+    Code::Flags flags =
+        Code::ComputeWasmFlags(Code::WASM_FUNCTION, Code::WASM_TO_JS);
     bool debugging =
 #if DEBUG
         true;
 #else
         FLAG_print_opt_code || FLAG_trace_turbo || FLAG_trace_turbo_graph;
 #endif
     const char* func_name = "wasm-to-js";
     static unsigned id = 0;
     Vector<char> buffer;
     if (debugging) {
@@ skipping 63 matching lines @@
     thrower.Failed(buffer.start(), result);
     return Handle<Code>::null();
   }
 
   // Run the compiler pipeline to generate machine code.
   CallDescriptor* descriptor =
       wasm::ModuleEnv::GetWasmCallDescriptor(&zone, function.sig);
   if (kPointerSize == 4) {
     descriptor = module_env->GetI32WasmCallDescriptor(&zone, descriptor);
   }
-  Code::Flags flags = Code::ComputeFlags(Code::WASM_FUNCTION);
+  Code::Flags flags = Code::ComputeWasmFlags(Code::WASM_FUNCTION);
   // add flags here if a meaningful name is helpful for debugging.
   bool debugging =
 #if DEBUG
       true;
 #else
       FLAG_print_opt_code || FLAG_trace_turbo || FLAG_trace_turbo_graph;
 #endif
   const char* func_name = "wasm";
   Vector<char> buffer;
   if (debugging) {
@@ skipping 15 matching lines @@
         module_env->module->GetName(function.name_offset));
   }
 
   return code;
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8