IR: Change convention from number of elements to elementsize

The IR stores elementsize, where the json was wanting number of
elements. While the IR Emitter function declaration always wanted
element size. This was causing us to do a little dance from ElementSize
-> Number of elements -> ElementSize. Just pass the ElementSize directly
instead of this bogus little dance.

FEXCore/Scripts/json_ir_generator.py

@@ -44,7 +44,7 @@ class OpDefinition:
     HasDest: bool
     DestType: str
     DestSize: str
-    NumElements: str
+    ElementSize: str
     OpClass: str
     HasSideEffects: bool
     ImplicitFlagClobber: bool
@@ -67,7 +67,7 @@ def __init__(self):
         self.HasDest = False
         self.DestType = None
         self.DestSize = None
-        self.NumElements = None
+        self.ElementSize = None
         self.OpClass = None
         self.OpSize = 0
         self.HasSideEffects = False
@@ -234,8 +234,8 @@ def parse_ops(ops):
             if "DestSize" in op_val:
                 OpDef.DestSize = op_val["DestSize"]
 
-            if "NumElements" in op_val:
-                OpDef.NumElements = op_val["NumElements"]
+            if "ElementSize" in op_val:
+                OpDef.ElementSize = op_val["ElementSize"]
 
             if len(op_class):
                 OpDef.OpClass = op_class
@@ -745,10 +745,10 @@ def print_ir_allocator_helpers():
             if op.DestSize != None:
                 output_file.write("\t\t_Op.first->Header.Size = {};\n".format(op.DestSize))
 
-            if op.NumElements == None:
+            if op.ElementSize == None:
                 output_file.write("\t\t_Op.first->Header.ElementSize = _Op.first->Header.Size;\n")
             else:
-                output_file.write("\t\t_Op.first->Header.ElementSize = _Op.first->Header.Size / ({});\n".format(op.NumElements))
+                output_file.write("\t\t_Op.first->Header.ElementSize = {};\n".format(op.ElementSize))
 
             # Insert validation here
             if op.EmitValidation != None: