x86: rename CheckRegSize to CheckOperandSize

While originally indeed used for register size checking only, the
attribute has been used for memory operand size checking as well already
for quite a while, with more such uses recently having been added.

gas/config/tc-i386.c

@@ -6431,7 +6431,7 @@ check_VecOperands (const insn_template *t)
       if (operand_type_all_zero (&overlap))
 	  goto bad_broadcast;
 
-      if (t->opcode_modifier.checkregsize)
+      if (t->opcode_modifier.checkoperandsize)
 	{
 	  unsigned int j;
 
@@ -6848,7 +6848,7 @@ match_template (char mnem_suffix)
 	}
 
       /* We check register size if needed.  */
-      if (t->opcode_modifier.checkregsize)
+      if (t->opcode_modifier.checkoperandsize)
 	{
 	  check_register = (1 << t->operands) - 1;
 	  if (i.broadcast.type || i.broadcast.bytes)

opcodes/i386-gen.c

@@ -639,7 +639,7 @@ static bitfield opcode_modifiers[] =
   BITFIELD (Jump),
   BITFIELD (FloatMF),
   BITFIELD (Size),
-  BITFIELD (CheckRegSize),
+  BITFIELD (CheckOperandSize),
   BITFIELD (OperandConstraint),
   BITFIELD (MnemonicSize),
   BITFIELD (No_bSuf),

opcodes/i386-opc.h

@@ -494,8 +494,8 @@ enum
   /* needs size prefix if in 64-bit mode */
 #define SIZE64 3
   Size,
-  /* check register size.  */
-  CheckRegSize,
+  /* Check that operand sizes match.  */
+  CheckOperandSize,
   /* any memory size */
 #define ANY_SIZE 1
   /* fake an extra reg operand for clr, imul and special register
@@ -740,7 +740,7 @@ typedef struct i386_opcode_modifier
   unsigned int jump:3;
   unsigned int floatmf:1;
   unsigned int size:2;
-  unsigned int checkregsize:1;
+  unsigned int checkoperandsize:1;
   unsigned int operandconstraint:4;
   unsigned int mnemonicsize:2;
   unsigned int no_bsuf:1;