Default aarch64-min-jump-table-entries to 9

The previous experiment in llvm#71166 set to 13 but the results
werent significantly better. Setting to 9

Author: hiraditya

llvm/lib/Target/AArch64/AArch64Subtarget.cpp

@@ -72,7 +72,7 @@ static cl::opt<AArch64PAuth::AuthCheckMethod>
                                cl::values(AUTH_CHECK_METHOD_CL_VALUES_LR));
 
 static cl::opt<unsigned> AArch64MinimumJumpTableEntries(
-    "aarch64-min-jump-table-entries", cl::init(13), cl::Hidden,
+    "aarch64-min-jump-table-entries", cl::init(9), cl::Hidden,
     cl::desc("Set minimum number of entries to use a jump table on AArch64"));
 
 unsigned AArch64Subtarget::getVectorInsertExtractBaseCost() const {