[wasm] Add support for compiling WASM_INTERPRETER_ENTRY stubs

src/compiler/wasm-compiler.h

Index: src/compiler/wasm-compiler.h
diff --git a/src/compiler/wasm-compiler.h b/src/compiler/wasm-compiler.h
index fa01b485373a35118448da10ea8ac459a9946181..4d0c081d52706f23508a9234803860f48f12f511 100644
--- a/src/compiler/wasm-compiler.h
+++ b/src/compiler/wasm-compiler.h
@@ -102,6 +102,12 @@ Handle<Code> CompileJSToWasmWrapper(Isolate* isolate,
                                     const wasm::WasmModule* module,
                                     Handle<Code> wasm_code, uint32_t index);
 
+// Compiles a function which captures the parameters and calls into the wasm

[titzer, 2017/01/11 15:52:34]

Can we reword this comment, since "capture" has a specific connotation for
closures...maybe just "Compiles a stub that redirects a call to a function to
the wasm interpreter".

[Clemens Hammacher, 2017/01/11 16:56:10]

Done.

+// interpreter. It's ABI compatible with the compiled wasm function.
+Handle<Code> CompileWasmInterpreterEntry(Isolate* isolate, uint32_t func_index,
+                                         wasm::FunctionSig* sig,
+                                         Handle<WasmInstanceObject> instance);
+
 // Abstracts details of building TurboFan graph nodes for WASM to separate
 // the WASM decoder from the internal details of TurboFan.
 class WasmTrapHelper;
@@ -182,6 +188,8 @@ class WasmGraphBuilder {
 
   void BuildJSToWasmWrapper(Handle<Code> wasm_code, wasm::FunctionSig* sig);
   void BuildWasmToJSWrapper(Handle<JSReceiver> target, wasm::FunctionSig* sig);
+  void BuildWasmInterpreterEntry(uint32_t func_index, wasm::FunctionSig* sig,
+                                 Handle<WasmInstanceObject> instance);
 
   Node* ToJS(Node* node, wasm::ValueType type);
   Node* FromJS(Node* node, Node* context, wasm::ValueType type);