Add wasm internal opcodes for asm.js stdlib functions we're missing.

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 2e86b5600ec63d2becbe246fe120b58968efc9ac..b7a948d0ab5207d95f6c444172b34e03a5bd543a 100644
--- a/src/compiler/wasm-compiler.h
+++ b/src/compiler/wasm-compiler.h
@@ -180,8 +180,8 @@ class WasmGraphBuilder {
   Node* BuildI32Popcnt(Node* input);
   Node* BuildI64Ctz(Node* input);
   Node* BuildI64Popcnt(Node* input);
-  Node* BuildRoundingInstruction(Node* input, ExternalReference ref,
-                                 MachineType type);
+  Node* BuildCFuncInstruction(ExternalReference ref, MachineType type,
+                              Node* input0, Node* input1 = nullptr);
   Node* BuildF32Trunc(Node* input);
   Node* BuildF32Floor(Node* input);
   Node* BuildF32Ceil(Node* input);
@@ -191,6 +191,18 @@ class WasmGraphBuilder {
   Node* BuildF64Ceil(Node* input);
   Node* BuildF64NearestInt(Node* input);
 
+  Node* BuildF64Acos(Node* input);
+  Node* BuildF64Asin(Node* input);
+  Node* BuildF64Atan(Node* input);
+  Node* BuildF64Cos(Node* input);
+  Node* BuildF64Sin(Node* input);
+  Node* BuildF64Tan(Node* input);
+  Node* BuildF64Exp(Node* input);
+  Node* BuildF64Log(Node* input);
+  Node* BuildF64Pow(Node* left, Node* right);
+  Node* BuildF64Atan2(Node* left, Node* right);
+  Node* BuildF64Mod(Node* left, Node* right);
+
   Node** Realloc(Node** buffer, size_t count) {
     Node** buf = Buffer(count);
     if (buf != buffer) memcpy(buf, buffer, count * sizeof(Node*));