Convert SIMD wasm ops to runtime function calls

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 93c2ae91d10168e573ac8f0178bb261e74d5ca8e..6c5e34c7d3b834ea19a53e0d1dbbf6f61548f8b2 100644
--- a/src/compiler/wasm-compiler.h
+++ b/src/compiler/wasm-compiler.h
@@ -133,6 +133,10 @@ class WasmGraphBuilder {
   Node* FromJS(Node* node, Node* context, wasm::LocalType type);
   Node* Invert(Node* node);
   Node* FunctionTable();
+  Node* BuildChangeInt32ToTagged(Node* value);
+  Node* BuildChangeTaggedToInt32(Node* value);
+  Node* BuildChangeFloat64ToTagged(Node* value);
+  Node* BuildChangeTaggedToFloat64(Node* value);
 
   //-----------------------------------------------------------------------
   // Operations that concern the linear memory.
@@ -162,6 +166,13 @@ class WasmGraphBuilder {
 
   void SetSourcePosition(Node* node, wasm::WasmCodePosition position);
 
+  //-----------------------------------------------------------------------
+  // SIMD operations.
+  //-----------------------------------------------------------------------
+  Node* DefaultS128Value();
+  void set_is_simd_function(bool simd) { this->is_simd_function_ = simd; }

[titzer, 2016/05/19 09:43:27]

I think this should be "has simd ops" and should be hidden in the private
implementation details (i.e. only set when internally a SIMD operation is
detected).

[gdeepti, 2016/07/01 22:24:48]

Changed to HasSimdOps, and is now only set internally in the compiler. 

+  bool is_simd_function() { return is_simd_function_; }
+
  private:
   static const int kDefaultBufferSize = 16;
   friend class WasmTrapHelper;
@@ -180,6 +191,7 @@ class WasmGraphBuilder {
 
   WasmTrapHelper* trap_;
   wasm::FunctionSig* function_signature_;
+  bool is_simd_function_;
   SetOncePointer<const Operator> allocate_heap_number_operator_;
 
   compiler::SourcePositionTable* source_position_table_ = nullptr;
@@ -277,9 +289,6 @@ class WasmGraphBuilder {
 
   Node* BuildJavaScriptToNumber(Node* node, Node* context, Node* effect,
                                 Node* control);
-  Node* BuildChangeInt32ToTagged(Node* value);
-  Node* BuildChangeFloat64ToTagged(Node* value);
-  Node* BuildChangeTaggedToFloat64(Node* value);
 
   Node* BuildChangeInt32ToSmi(Node* value);
   Node* BuildChangeSmiToInt32(Node* value);