Fix cpu issue with cmp optimization, add HINT and FRINTX (scalar) instructions, fix for NvFlinger sometimes missing free buffers

ChocolArm64/State/ARoundMode.cs

@@ -0,0 +1,10 @@
+namespace ChocolArm64.State
+{
+    public enum ARoundMode
+    {
+        ToNearest            = 0,
+        TowardsPlusInfinity  = 1,
+        TowardsMinusInfinity = 2,
+        TowardsZero          = 3
+    }
+}