x86/Intel: support "mmword ptr"

This is an alias of "qword ptr", commonly used with MMX insns.

At this occasion also test (alongside the newly supported "mmword")
- "zmmword" used as expression,
- PADDB with "oword ptr" (aliasing "xmmword ptr").

gas/ChangeLog

@@ -1,3 +1,13 @@
+2019-12-09  Jan Beulich  <jbeulich@suse.com>
+
+	* config/tc-i386-intel.c (O_mmword_ptr): Define.
+	(i386_types): Add mmword entry.
+	(i386_intel_simplify, i386_intel_operand): Add comment.
+	* testsuite/gas/i386/intel-expr.s: Also test mmword and zmmword.
+	* testsuite/gas/i386/intelok.s: Also test "mmword ptr".
+	* testsuite/gas/i386/intel-expr.d, testsuite/gas/i386/intelok.d,
+	testsuite/gas/i386/intelok.e: Adjust expectations.
+
 2019-12-09  Jan Beulich  <jbeulich@suse.com>
 
 	* config/tc-i386-intel.c (i386_intel_operand): Set "byte"

gas/config/tc-i386-intel.c

@@ -52,6 +52,8 @@ intel_state;
 #define O_dword_ptr O_md26
 /* qword ptr X_add_symbol */
 #define O_qword_ptr O_md25
+/* mmword ptr X_add_symbol */
+#define O_mmword_ptr O_qword_ptr
 /* oword ptr X_add_symbol */
 #define O_oword_ptr O_md24
 /* fword ptr X_add_symbol */
@@ -105,6 +107,7 @@ const i386_types[] =
     I386_TYPE(dword, 4),
     I386_TYPE(fword, 6),
     I386_TYPE(qword, 8),
+    I386_TYPE(mmword, 8),
     I386_TYPE(tbyte, 10),
     I386_TYPE(oword, 16),
     I386_TYPE(xmmword, 16),
@@ -383,7 +386,7 @@ static int i386_intel_simplify (expressionS *e)
     case O_word_ptr:
     case O_dword_ptr:
     case O_fword_ptr:
-    case O_qword_ptr:
+    case O_qword_ptr: /* O_mmword_ptr */
     case O_tbyte_ptr:
     case O_oword_ptr:
     case O_xmmword_ptr:
@@ -678,7 +681,7 @@ i386_intel_operand (char *operand_string, int got_a_float)
 	    }
 	  break;
 
-	case O_qword_ptr:
+	case O_qword_ptr: /* O_mmword_ptr */
 	  i.types[this_operand].bitfield.qword = 1;
 	  if (current_templates->start->base_opcode == 0x62 /* bound */
 	      || got_a_float == 1)	/* "f..." */

gas/testsuite/gas/i386/intel-expr.d

@@ -9,5 +9,5 @@ Contents of section .data:
  0020 03000000 40020000 00000000 08000000  .*
  0030 05000000 0f000000 ffffffff 00000000  .*
  0040 ffffffff 00000000 ffffffff 00000000  .*
- 0050 01020406 080a1010 20cccccc cccccccc  .*
+ 0050 01020406 08080a10 102040cc cccccccc  .*
  0060 02ff05ff 04ff06ff 08ff06ff cccccccc  .*

gas/testsuite/gas/i386/intel-expr.s

@@ -24,7 +24,8 @@
 
 	.p2align 4, 0xcc
 
-	.byte	byte, word, dword, fword, qword, tbyte, oword, xmmword, ymmword
+	.byte	byte, word, dword, fword, qword, mmword, tbyte
+	.byte	oword, xmmword, ymmword, zmmword
 
 	.p2align 4, 0xcc
 

gas/testsuite/gas/i386/intelok.d

@@ -88,6 +88,8 @@ Disassembly of section .text:
 [ 	]*[0-9a-f]+:	0f bf 00[ 	]+movsx[ 	]+eax,WORD PTR \[eax\]
 [ 	]*[0-9a-f]+:	0f fc 00[ 	]+paddb[ 	]+mm0,(QWORD PTR )?\[eax\]
 [ 	]*[0-9a-f]+:	0f fc 00[ 	]+paddb[ 	]+mm0,(QWORD PTR )?\[eax\]
+[ 	]*[0-9a-f]+:	0f fc 00[ 	]+paddb[ 	]+mm0,(QWORD PTR )?\[eax\]
+[ 	]*[0-9a-f]+:	66 0f fc 00[ 	]+paddb[ 	]+xmm0,(XMMWORD PTR )?\[eax\]
 [ 	]*[0-9a-f]+:	66 0f fc 00[ 	]+paddb[ 	]+xmm0,(XMMWORD PTR )?\[eax\]
 [ 	]*[0-9a-f]+:	66 0f fc 00[ 	]+paddb[ 	]+xmm0,(XMMWORD PTR )?\[eax\]
 [ 	]*[0-9a-f]+:	0f c4 00 03[ 	]+pinsrw[ 	]+mm0,(WORD PTR )?\[eax\],0x3

gas/testsuite/gas/i386/intelok.e

@@ -1,2 +1,2 @@
 .*: Assembler messages:
-.*:153: Warning: redundant segment overrides
+.*:155: Warning: redundant segment overrides

gas/testsuite/gas/i386/intelok.s

@@ -83,9 +83,11 @@ start:
 	movsx	eax, byte ptr [eax]
 	movsx	eax, word ptr [eax]
 	paddb	mm0, [eax]
+	paddb	mm0, mmword ptr [eax]
 	paddb	mm0, qword ptr [eax]
 	paddb	xmm0, [eax]
 	paddb	xmm0, xmmword ptr [eax]
+	paddb	xmm0, oword ptr [eax]
 	pinsrw	mm0, word ptr [eax], 3
 	pinsrw	xmm0, word ptr [eax], 7
 	push	dword ptr [eax]