x86: fix register check in check_qword_reg()

A missing 'r' (or wrong 'e') register prefix needs to be complained
about if the template allows for a 64-bit register, not a 32-bit one.
I assume this was a copy-and-paste type of mistake
(from check_long_reg()).

gas/ChangeLog

@@ -1,3 +1,12 @@
+2016-07-04  Jan Beulich  <jbeulich@suse.com>
+
+	* config/tc-i386.c (check_qword_reg): Correct register kind
+	checked.
+	* testsuite/gas/i386/x86-64-suffix-bad.s: Add q-suffix with
+	16-bit register cases.
+	* testsuite/gas/i386/x86-64-suffix-bad.l: Adjust expectations.
+
+
 2016-07-02  Maciej W. Rozycki  <macro@imgtec.com>
 
 	* testsuite/gas/mips/ecoff@ld.d: Remove test.

gas/config/tc-i386.c

@@ -5670,7 +5670,7 @@ check_qword_reg (void)
     /* Warn if the r prefix on a general reg is missing.  */
     else if ((i.types[op].bitfield.reg16
 	      || i.types[op].bitfield.reg32)
-	     && (i.tm.operand_types[op].bitfield.reg32
+	     && (i.tm.operand_types[op].bitfield.reg64
 		 || i.tm.operand_types[op].bitfield.acc))
       {
 	/* Prohibit these changes in the 64bit mode, since the

gas/testsuite/gas/i386/x86-64-suffix-bad.l

@@ -11,3 +11,7 @@
 .*:15: Error: .*
 .*:16: Error: .*
 .*:17: Error: .*
+.*:19: Error: .*
+.*:20: Error: .*
+.*:21: Error: .*
+.*:22: Error: .*

gas/testsuite/gas/i386/x86-64-suffix-bad.s

@@ -15,3 +15,8 @@ start:
 	orb	%rax, (%rax)
 	orw	%rax, (%rax)
 	orl	%rax, (%rax)
+
+	pushq	%ax
+	popq	%ax
+	callq	*%ax
+	jmpq	*%ax