x86: correct / adjust debug printing

For quite some time we've been using combinations of bits for
specifying various registers in operands and templates. I think it was
Alan who had indicated that likely the debug printing would need
adjustment as a result. Here we go.

Accumulator handling for GPRs gets changed to match that for FPU regs.
For this to work, OPERAND_TYPE_ACC{32,64} get repurposed, with their
original uses replaced by direct checks of the two bits of interest,
which is cheaper than operand_type_equal() invocations.

For SIMD registers nothing similar appears to be needed, as respective
operands get stripped from the (copy of the) template before pt() is
reached.

The type change on pi() is to silence a compiler diagnostic. Arguably
its other parameter could also be const-qualified.

2 files changed, 19 insertions, 9 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index b76ae78..7272221 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,14 @@
 2019-06-25  Jan Beulich  <jbeulich@suse.com>
 
+	* tc-i386.c (acc32, acc64): Delete.
+	(pi): Make first parameter pinter-to-const.
+	(type_names): Remove Acc. Add acc8, acc16, acc32, and acc64.
+	(pt): Use operand_type_equal().
+	(match_template): Replace use of acc32.
+	(process_suffix): Replace use of acc64.
+
+2019-06-25  Jan Beulich  <jbeulich@suse.com>
+
 	* doc/c-i386.texi: Mark -mavxscalar= and -mvexwig as dangrous to
 	use.
 
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 8263b15..6c5d5b4 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1895,8 +1895,6 @@ operand_type_xor (i386_operand_type x, i386_operand_type y)
   return x;
 }
 
-static const i386_operand_type acc32 = OPERAND_TYPE_ACC32;
-static const i386_operand_type acc64 = OPERAND_TYPE_ACC64;
 static const i386_operand_type disp16 = OPERAND_TYPE_DISP16;
 static const i386_operand_type disp32 = OPERAND_TYPE_DISP32;
 static const i386_operand_type disp32s = OPERAND_TYPE_DISP32S;
@@ -3004,7 +3002,7 @@ static void pe (expressionS *);
 static void ps (symbolS *);
 
 static void
-pi (char *line, i386_insn *x)
+pi (const char *line, i386_insn *x)
 {
   unsigned int j;
 
@@ -3105,6 +3103,10 @@ const type_names[] =
   { OPERAND_TYPE_REG16, "r16" },
   { OPERAND_TYPE_REG32, "r32" },
   { OPERAND_TYPE_REG64, "r64" },
+  { OPERAND_TYPE_ACC8, "acc8" },
+  { OPERAND_TYPE_ACC16, "acc16" },
+  { OPERAND_TYPE_ACC32, "acc32" },
+  { OPERAND_TYPE_ACC64, "acc64" },
   { OPERAND_TYPE_IMM8, "i8" },
   { OPERAND_TYPE_IMM8, "i8s" },
   { OPERAND_TYPE_IMM16, "i16" },
@@ -3127,7 +3129,6 @@ const type_names[] =
   { OPERAND_TYPE_FLOATACC, "FAcc" },
   { OPERAND_TYPE_SREG2, "SReg2" },
   { OPERAND_TYPE_SREG3, "SReg3" },
-  { OPERAND_TYPE_ACC, "Acc" },
   { OPERAND_TYPE_JUMPABSOLUTE, "Jump Absolute" },
   { OPERAND_TYPE_REGMMX, "rMMX" },
   { OPERAND_TYPE_REGXMM, "rXMM" },
@@ -3146,7 +3147,7 @@ pt (i386_operand_type t)
   for (j = 0; j < ARRAY_SIZE (type_names); j++)
     {
       a = operand_type_and (t, type_names[j].mask);
-      if (!operand_type_all_zero (&a))
+      if (operand_type_equal (&a, &type_names[j].mask))
 	fprintf (stdout, "%s, ",  type_names[j].name);
     }
   fflush (stdout);
@@ -5814,8 +5815,8 @@ match_template (char mnem_suffix)
 	     zero-extend %eax to %rax.  */
 	  if (flag_code == CODE_64BIT
 	      && t->base_opcode == 0x90
-	      && operand_type_equal (&i.types [0], &acc32)
-	      && operand_type_equal (&i.types [1], &acc32))
+	      && i.types[0].bitfield.acc && i.types[0].bitfield.dword
+	      && i.types[1].bitfield.acc && i.types[1].bitfield.dword)
 	    continue;
 	  /* xrelease mov %eax, <disp> is another special case. It must not
 	     match the accumulator-only encoding of mov.  */
@@ -6409,8 +6410,8 @@ process_suffix (void)
 	  && ! (i.operands == 2
 		&& i.tm.base_opcode == 0x90
 		&& i.tm.extension_opcode == None
-		&& operand_type_equal (&i.types [0], &acc64)
-		&& operand_type_equal (&i.types [1], &acc64)))
+		&& i.types[0].bitfield.acc && i.types[0].bitfield.qword
+		&& i.types[1].bitfield.acc && i.types[1].bitfield.qword))
 	i.rex |= REX_W;
 
       break;