arm64: Add bic(s) compact encoding

Change-Id: Ief95d09c2f7bec412b2509e615f7c09e4d228986

Author: jonathandavies-arm

src/coreclr/jit/codegenarm64.cpp

@@ -2645,6 +2645,12 @@ void CodeGen::genCodeForBinary(GenTreeOp* tree)
                     break;
                 }
 
+                case GT_AND_NOT:
+                {
+                    ins = INS_bics;
+                    break;
+                }
+
                 default:
                 {
                     noway_assert(!"Unexpected BinaryOp with GTF_SET_FLAGS set");

src/coreclr/jit/gentree.cpp

@@ -19995,7 +19995,7 @@ bool GenTree::SupportsSettingZeroFlag()
     }
 #endif
 #elif defined(TARGET_ARM64)
-    if (OperIs(GT_AND))
+    if (OperIs(GT_AND, GT_AND_NOT))
     {
         return true;
     }

src/coreclr/jit/lowerarmarch.cpp

@@ -304,6 +304,11 @@ bool Lowering::IsContainableUnaryOrBinaryOp(GenTree* parentNode, GenTree* childN
             }
         }
 
+        if (childNode->OperIs(GT_LSH, GT_RSH, GT_RSZ) && parentNode->OperIs(GT_AND_NOT))
+        {
+            return true;
+        }
+
         // TODO: Handle CMN, NEG/NEGS, BIC/BICS, EON, MVN, ORN, TST
         return false;
     }