enable IsIn optimization for addrOpnds

numeric literal copy proped to var opnds are handled as addrOpnds. This change allows handling of addr opnds for the IsIn optimization, allowing us to optimize ```if (0 in array) ...```.

Author: sigatrev

lib/Backend/GlobOptArrays.cpp

@@ -151,6 +151,16 @@ bool GlobOpt::ArraySrcOpt::CheckOpCode()
                 return false;
             }
 
+            if (instr->GetSrc1()->IsAddrOpnd())
+            {
+                const Js::Var val = instr->GetSrc1()->AsAddrOpnd()->m_address;
+                if (Js::TaggedInt::Is(val))
+                {
+                    originalIndexOpnd = instr->UnlinkSrc1();
+                    instr->SetSrc1(IR::IntConstOpnd::New(Js::TaggedInt::ToInt32(val), TyInt32, instr->m_func));
+                }
+            }
+
             if (!instr->GetSrc1()->IsRegOpnd() && !instr->GetSrc1()->IsIntConstOpnd())
             {
                 return false;
@@ -199,7 +209,7 @@ void GlobOpt::ArraySrcOpt::TypeSpecIndex()
         {
             // If the optimization is unable to eliminate the bounds checks, we need to restore the original var sym.
             Assert(originalIndexOpnd == nullptr);
-            originalIndexOpnd = instr->GetSrc1()->Copy(func)->AsRegOpnd();
+            originalIndexOpnd = instr->GetSrc1()->Copy(func);
             globOpt->ToTypeSpecIndex(instr, instr->GetSrc1()->AsRegOpnd(), nullptr);
         }
     }

lib/Backend/GlobOptArrays.h

@@ -52,7 +52,7 @@ class GlobOpt::ArraySrcOpt
     IR::IndirOpnd * baseOwnerIndir = nullptr;
     IR::RegOpnd * baseOpnd = nullptr;
     IR::Opnd * indexOpnd = nullptr;
-    IR::RegOpnd * originalIndexOpnd = nullptr;
+    IR::Opnd * originalIndexOpnd = nullptr;
     bool isProfilableLdElem = false;
     bool isProfilableStElem = false;
     bool isLoad = false;