[wasm] Move the CallDescriptor creation methods out of ModuleEnv into the compiler.

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index 5e7c86c04b9913f0413e60859c20482eece2fcf4..b61f0d8de153b4a1d771bbd6041c8cb62877a33f 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -162,15 +162,12 @@ struct V8_EXPORT_PRIVATE WasmModule {
   static const uint32_t kMinMemPages = 1;       // Minimum memory size = 64kb
 
   std::unique_ptr<Zone> signature_zone;
-  uint32_t min_mem_pages = 0;  // minimum size of the memory in 64k pages
-  uint32_t max_mem_pages = 0;  // maximum size of the memory in 64k pages
-  bool has_max_mem = false;    // try if a maximum memory size exists
-  bool has_memory = false;     // true if the memory was defined or imported
-  bool mem_export = false;     // true if the memory is exported
-  // TODO(wasm): reconcile start function index being an int with
-  // the fact that we index on uint32_t, so we may technically not be
-  // able to represent some start_function_index -es.
-  int start_function_index = -1;      // start function, if any
+  uint32_t min_mem_pages = 0;     // minimum size of the memory in 64k pages
+  uint32_t max_mem_pages = 0;     // maximum size of the memory in 64k pages
+  bool has_max_mem = false;       // try if a maximum memory size exists
+  bool has_memory = false;        // true if the memory was defined or imported
+  bool mem_export = false;        // true if the memory is exported
+  int start_function_index = -1;  // start function, >= 0 if any
 
   std::vector<WasmGlobal> globals;             // globals in this module.
   uint32_t globals_size = 0;                   // size of globals table.
@@ -365,14 +362,6 @@ struct V8_EXPORT_PRIVATE ModuleEnv {
     DCHECK_NOT_NULL(instance);
     return instance->function_code[index];
   }
-
-  // TODO(titzer): move these into src/compiler/wasm-compiler.cc
-  static compiler::CallDescriptor* GetWasmCallDescriptor(Zone* zone,
-                                                         FunctionSig* sig);
-  static compiler::CallDescriptor* GetI32WasmCallDescriptor(
-      Zone* zone, compiler::CallDescriptor* descriptor);
-  static compiler::CallDescriptor* GetI32WasmCallDescriptorForSimd(
-      Zone* zone, compiler::CallDescriptor* descriptor);
 };
 
 // A ModuleEnv together with ModuleWireBytes.