Implement optional turbofan UnalignedLoad and UnalignedStore operators

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 d544caada7326ebaa0ca901a776781cb082ac609..1985df8a77c5d48f84c398855149c6d5fc98d810 100644
--- a/src/compiler/wasm-compiler.h
+++ b/src/compiler/wasm-compiler.h
@@ -117,8 +117,9 @@ class WasmGraphBuilder {
   Node* LoadGlobal(uint32_t index);
   Node* StoreGlobal(uint32_t index, Node* val);
   Node* LoadMem(wasm::LocalType type, MachineType memtype, Node* index,
-                uint32_t offset);
-  Node* StoreMem(MachineType type, Node* index, uint32_t offset, Node* val);
+                uint32_t offset, bool aligned);
+  Node* StoreMem(MachineType type, Node* index, uint32_t offset, bool aligned,
+                 Node* val);
 
   static void PrintDebugName(Node* node);