h8300.c (output_logical_op): Optimize or.l when ORing with 0xffff??00 with the…

h8300.c (output_logical_op): Optimize or.l when ORing with 0xffff??00 with the highest bit of the ?? part set.

	* config/h8300/h8300.c (output_logical_op): Optimize or.l when
	ORing with 0xffff??00 with the highest bit of the ?? part set.
	(compute_logical_op_length): Update.
	(compute_logical_op_cc): Likewise.

From-SVN: r63131

gcc/ChangeLog

+2003-02-19  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* config/h8300/h8300.c (output_logical_op): Optimize or.l when
+	ORing with 0xffff??00 with the highest bit of the ?? part set.
+	(compute_logical_op_length): Update.
+	(compute_logical_op_cc): Likewise.
+
 2003-02-19  Josef Zlomek  <zlomekj@suse.cz>
 
 	* bb-reorder.c (find_traces_1_round): Fixed condition for small

gcc/config/h8300/h8300.c

@@ -2206,7 +2206,9 @@ output_logical_op (mode, operands)
 	 using multiple insns.  */
       if ((TARGET_H8300H || TARGET_H8300S)
 	  && w0 != 0 && w1 != 0
-	  && !(lower_half_easy_p && upper_half_easy_p))
+	  && !(lower_half_easy_p && upper_half_easy_p)
+	  && !(code == IOR && w1 == 0xffff
+	       && (w0 & 0x8000) != 0 && lower_half_easy_p))
 	{
 	  sprintf (insn_buf, "%s.l\t%%S2,%%S0", opname);
 	  output_asm_insn (insn_buf, operands);
@@ -2251,6 +2253,13 @@ output_logical_op (mode, operands)
 			     ? "sub.w\t%e0,%e0" : "not.w\t%e0",
 			     operands);
 	  else if ((TARGET_H8300H || TARGET_H8300S)
+		   && code == IOR
+		   && w1 == 0xffff
+		   && (w0 & 0x8000) != 0)
+	    {
+	      output_asm_insn ("exts.l\t%S0", operands);
+	    }
+	  else if ((TARGET_H8300H || TARGET_H8300S)
 		   && code == AND
 		   && w1 == 0xff00)
 	    {
@@ -2354,7 +2363,9 @@ compute_logical_op_length (mode, operands)
 	 using multiple insns.  */
       if ((TARGET_H8300H || TARGET_H8300S)
 	  && w0 != 0 && w1 != 0
-	  && !(lower_half_easy_p && upper_half_easy_p))
+	  && !(lower_half_easy_p && upper_half_easy_p)
+	  && !(code == IOR && w1 == 0xffff
+	       && (w0 & 0x8000) != 0 && lower_half_easy_p))
 	{
 	  if (REG_P (operands[2]))
 	    length += 4;
@@ -2395,6 +2406,13 @@ compute_logical_op_length (mode, operands)
 	      length += 2;
 	    }
 	  else if ((TARGET_H8300H || TARGET_H8300S)
+		   && code == IOR
+		   && w1 == 0xffff
+		   && (w0 & 0x8000) != 0)
+	    {
+	      length += 2;
+	    }
+	  else if ((TARGET_H8300H || TARGET_H8300S)
 		   && code == AND
 		   && w1 == 0xff00)
 	    {
@@ -2475,10 +2493,22 @@ compute_logical_op_cc (mode, operands)
 	 using multiple insns.  */
       if ((TARGET_H8300H || TARGET_H8300S)
 	  && w0 != 0 && w1 != 0
-	  && !(lower_half_easy_p && upper_half_easy_p))
+	  && !(lower_half_easy_p && upper_half_easy_p)
+	  && !(code == IOR && w1 == 0xffff
+	       && (w0 & 0x8000) != 0 && lower_half_easy_p))
 	{
 	  cc = CC_SET_ZNV;
 	}
+      else
+	{
+	  if ((TARGET_H8300H || TARGET_H8300S)
+	      && code == IOR
+	      && w1 == 0xffff
+	      && (w0 & 0x8000) != 0)
+	    {
+	      cc = CC_SET_ZNV;
+	    }
+	}
       break;
     default:
       abort ();