From: Richard Kenner <kenner@gcc.gnu.org>
Date: Thu, 6 Jun 1996 21:53:49 +0000 (-0400)
Subject: (movsi_const0, movhi): Favor clr with TARGET_5200.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6db59ad5add2899f4b8332753658e3919e83259b;p=gcc.git

(movsi_const0, movhi): Favor clr with TARGET_5200.

(add[qhs]3): Don't use two addqw/subqw insns to add small integers to
an address register with TARGET_68060.
(stack push peephole): Use moveq.l with TARGET_5200 (when appropriate).

From-SVN: r12184
---

diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md
index 5be39104add..09d152c7b19 100644
--- a/gcc/config/m68k/m68k.md
+++ b/gcc/config/m68k/m68k.md
@@ -784,14 +784,14 @@
 	(const_int 0))]
   ;; clr insns on 68000 read before writing.
   ;; This isn't so on the 68010, but we have no TARGET_68010.
-  "(TARGET_68020
+  "((TARGET_68020 || TARGET_5200)
     || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0])))"
   "*
 {
   if (ADDRESS_REG_P (operands[0]))
     return \"sub%.l %0,%0\";
   /* moveq is faster on the 68000.  */
-  if (DATA_REG_P (operands[0]) && !TARGET_68020)
+  if (DATA_REG_P (operands[0]) && (!TARGET_68020 && !TARGET_5200))
 #if defined(MOTOROLA) && !defined(CRDS)
     return \"moveq%.l %#0,%0\";
 #else
@@ -869,7 +869,7 @@
 	      || GET_CODE (operands[0]) == MEM)
 	  /* clr insns on 68000 read before writing.
 	     This isn't so on the 68010, but we have no TARGET_68010.  */
-	  && (TARGET_68020
+	  && ((TARGET_68020 || TARGET_5200)
 	      || !(GET_CODE (operands[0]) == MEM
 		   && MEM_VOLATILE_P (operands[0]))))
 	return \"clr%.w %0\";
@@ -937,7 +937,7 @@
 	      || GET_CODE (operands[0]) == MEM)
 	  /* clr insns on 68000 read before writing.
 	     This isn't so on the 68010, but we have no TARGET_68010.  */
-	  && (TARGET_68020
+	  && ((TARGET_68020 || TARGET_5200)
 	      || !(GET_CODE (operands[0]) == MEM
 		   && MEM_VOLATILE_P (operands[0]))))
 	return \"clr%.w %0\";
@@ -1112,7 +1112,7 @@
   if (operands[1] == const0_rtx
       /* clr insns on 68000 read before writing.
          This isn't so on the 68010, but we have no TARGET_68010.  */
-      && (TARGET_68020
+      && ((TARGET_68020 || TARGET_5200)
           || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
     return \"clr%.b %0\";
   return \"move%.b %1,%0\";
@@ -2249,25 +2249,25 @@
 		  ? \"subq%.w %2,%0\"
 		  : \"subq%.l %2,%0\");
 	}
-      /* On everything except the 68000 it is faster to use two
-	 addqw instructions to add a small integer (8 < N <= 16)
+      /* On everything except the 68000 and 68060 it is faster to use 
+	 two addqw instructions to add a small integer (8 < N <= 16)
 	 to an address register.  Likewise for subqw.*/
-      if (INTVAL (operands[2]) > 8
-	  && INTVAL (operands[2]) <= 16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
-	{
-	  operands[2] = gen_rtx (CONST_INT, VOIDmode, INTVAL (operands[2]) - 8);
-	  return \"addq%.w %#8,%0\;addq%.w %2,%0\";
-	}
-      if (INTVAL (operands[2]) < -8
-	  && INTVAL (operands[2]) >= -16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
+      if (TARGET_68020 && !TARGET_68060 && ADDRESS_REG_P (operands[0]))
 	{
-	  operands[2] = gen_rtx (CONST_INT, VOIDmode,
-				  - INTVAL (operands[2]) - 8);
-	  return \"subq%.w %#8,%0\;subq%.w %2,%0\";
+	  if (INTVAL (operands[2]) > 8
+	      && INTVAL (operands[2]) <= 16)
+	    {
+	      operands[2] = gen_rtx (CONST_INT, VOIDmode, 
+				      INTVAL (operands[2]) - 8);
+	      return \"addq%.w %#8,%0\;addq%.w %2,%0\";
+	    }
+	  if (INTVAL (operands[2]) < -8
+	      && INTVAL (operands[2]) >= -16)
+	    {
+	      operands[2] = gen_rtx (CONST_INT, VOIDmode,
+				      - INTVAL (operands[2]) - 8);
+	      return \"subq%.w %#8,%0\;subq%.w %2,%0\";
+	    }
 	}
 #endif
       if (ADDRESS_REG_P (operands[0])
@@ -2316,25 +2316,25 @@
 			         - INTVAL (operands[2]));
 	  return \"subq%.w %2,%0\";
 	}
-      /* On everything except the 68000 it is faster to use two
-	 addqw instructions to add a small integer (8 < N <= 16)
+      /* On everything except the 68000 and 68060 it is faster to use 
+	 two addqw instructions to add a small integer (8 < N <= 16)
 	 to an address register.  Likewise for subqw. */
-      if (INTVAL (operands[2]) > 8
-	  && INTVAL (operands[2]) <= 16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
-	{
-	  operands[2] = gen_rtx (CONST_INT, VOIDmode, INTVAL (operands[2]) - 8);
-	  return \"addq%.w %#8,%0\;addq%.w %2,%0\";
-	}
-      if (INTVAL (operands[2]) < -8
-	  && INTVAL (operands[2]) >= -16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
+      if (TARGET_68020 && !TARGET_68060 && ADDRESS_REG_P (operands[0]))
 	{
-	  operands[2] = gen_rtx (CONST_INT, VOIDmode,
-				 - INTVAL (operands[2]) - 8);
-	  return \"subq%.w %#8,%0\;subq%.w %2,%0\";
+	  if (INTVAL (operands[2]) > 8
+	      && INTVAL (operands[2]) <= 16)
+	    {
+	      operands[2] = gen_rtx (CONST_INT, VOIDmode, 
+				     INTVAL (operands[2]) - 8);
+	      return \"addq%.w %#8,%0\;addq%.w %2,%0\";
+	    }
+	  if (INTVAL (operands[2]) < -8
+	      && INTVAL (operands[2]) >= -16)
+	    {
+	      operands[2] = gen_rtx (CONST_INT, VOIDmode,
+				     - INTVAL (operands[2]) - 8);
+	      return \"subq%.w %#8,%0\;subq%.w %2,%0\";
+	    }
 	}
     }
 #endif
@@ -2376,25 +2376,25 @@
 			         - INTVAL (operands[1]));
 	  return \"subq%.w %1,%0\";
 	}
-      /* On everything except the 68000 it is faster to use two
-	 addqw instructions to add a small integer (8 < N <= 16)
+      /* On everything except the 68000 and 68060 it is faster to use 
+	 two addqw instructions to add a small integer (8 < N <= 16)
 	 to an address register.  Likewise for subqw. */
-      if (INTVAL (operands[1]) > 8
-	  && INTVAL (operands[1]) <= 16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
+      if (TARGET_68020 && !TARGET_68060 && ADDRESS_REG_P (operands[0]))
 	{
-	  operands[1] = gen_rtx (CONST_INT, VOIDmode, INTVAL (operands[1]) - 8);
-	  return \"addq%.w %#8,%0\;addq%.w %1,%0\";
-	}
-      if (INTVAL (operands[1]) < -8
-	  && INTVAL (operands[1]) >= -16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
-	{
-	  operands[1] = gen_rtx (CONST_INT, VOIDmode,
-				 - INTVAL (operands[1]) - 8);
-	  return \"subq%.w %#8,%0\;subq%.w %1,%0\";
+	  if (INTVAL (operands[1]) > 8
+	      && INTVAL (operands[1]) <= 16)
+	    {
+	      operands[1] = gen_rtx (CONST_INT, VOIDmode, 
+				     INTVAL (operands[1]) - 8);
+	      return \"addq%.w %#8,%0\;addq%.w %1,%0\";
+	    }
+	  if (INTVAL (operands[1]) < -8
+	      && INTVAL (operands[1]) >= -16)
+	    {
+	      operands[1] = gen_rtx (CONST_INT, VOIDmode,
+				     - INTVAL (operands[1]) - 8);
+	      return \"subq%.w %#8,%0\;subq%.w %1,%0\";
+	    }
 	}
     }
 #endif
@@ -2430,25 +2430,25 @@
 			         - INTVAL (operands[1]));
 	  return \"subq%.w %1,%0\";
 	}
-      /* On everything except the 68000 it is faster to use two
-	 addqw instructions to add a small integer (8 < N <= 16)
+      /* On everything except the 68000 and 68060 it is faster to use 
+	 two addqw instructions to add a small integer (8 < N <= 16)
 	 to an address register.  Likewise for subqw. */
-      if (INTVAL (operands[1]) > 8
-	  && INTVAL (operands[1]) <= 16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
+      if (TARGET_68020 && !TARGET_68060 && ADDRESS_REG_P (operands[0])) 
 	{
-	  operands[1] = gen_rtx (CONST_INT, VOIDmode, INTVAL (operands[1]) - 8);
-	  return \"addq%.w %#8,%0\;addq%.w %1,%0\";
-	}
-      if (INTVAL (operands[1]) < -8
-	  && INTVAL (operands[1]) >= -16
-	  && ADDRESS_REG_P (operands[0])
-	  && TARGET_68020)
-	{
-	  operands[1] = gen_rtx (CONST_INT, VOIDmode,
-				 - INTVAL (operands[1]) - 8);
-	  return \"subq%.w %#8,%0\;subq%.w %1,%0\";
+	  if (INTVAL (operands[1]) > 8
+	      && INTVAL (operands[1]) <= 16)
+	    {
+	      operands[1] = gen_rtx (CONST_INT, VOIDmode, 
+				     INTVAL (operands[1]) - 8);
+	      return \"addq%.w %#8,%0\;addq%.w %1,%0\";
+	    }
+	  if (INTVAL (operands[1]) < -8
+	      && INTVAL (operands[1]) >= -16)
+	    {
+	      operands[1] = gen_rtx (CONST_INT, VOIDmode,
+				     - INTVAL (operands[1]) - 8);
+	      return \"subq%.w %#8,%0\;subq%.w %1,%0\";
+	    }
 	}
     }
 #endif
@@ -6331,13 +6331,15 @@
       rtx xoperands[2];
       xoperands[0] = stack_pointer_rtx;
       xoperands[1] = gen_rtx (CONST_INT, VOIDmode, INTVAL (operands[0]) - 4);
-      if (TARGET_5200)
-        output_asm_insn (\"add%.l %1,%0\", xoperands);
-      else
 #ifndef NO_ADDSUB_Q
       if (INTVAL (xoperands[1]) <= 8)
-        output_asm_insn (\"addq%.w %1,%0\", xoperands);
-      else if (INTVAL (xoperands[1]) <= 16 && TARGET_68020)
+	{
+	  if (!TARGET_5200)
+	    output_asm_insn (\"addq%.w %1,%0\", xoperands);
+	  else
+	    output_asm_insn (\"addq%.l %1,%0\", xoperands);
+	}
+      else if (INTVAL (xoperands[1]) <= 16 && TARGET_68020 && !TARGET_68060)
 	{
 	  xoperands[1] = gen_rtx (CONST_INT, VOIDmode,
 				  INTVAL (xoperands[1]) - 8);
@@ -6345,7 +6347,7 @@
 	}
       else
 #endif
-        if (INTVAL (xoperands[1]) <= 0x7FFF)
+        if (INTVAL (xoperands[1]) <= 0x7FFF && !TARGET_5200)
           output_asm_insn (\"add%.w %1,%0\", xoperands);
       else
         output_asm_insn (\"add%.l %1,%0\", xoperands);
@@ -6371,13 +6373,15 @@
       rtx xoperands[2];
       xoperands[0] = stack_pointer_rtx;
       xoperands[1] = gen_rtx (CONST_INT, VOIDmode, INTVAL (operands[0]) - 4);
-      if (TARGET_5200)
-        output_asm_insn (\"add%.l %1,%0\", xoperands);
-      else
 #ifndef NO_ADDSUB_Q
       if (INTVAL (xoperands[1]) <= 8)
-	  output_asm_insn (\"addq%.w %1,%0\", xoperands);
-      else if (INTVAL (xoperands[1]) <= 16 && TARGET_68020)
+	{
+	  if (!TARGET_5200)
+	    output_asm_insn (\"addq%.w %1,%0\", xoperands);
+	  else
+	    output_asm_insn (\"addq%.l %1,%0\", xoperands);
+	}
+      else if (INTVAL (xoperands[1]) <= 16 && TARGET_68020 && !TARGET_68060)
 	{
 	  xoperands[1] = gen_rtx (CONST_INT, VOIDmode,
 				  INTVAL (xoperands[1]) - 8);
@@ -6385,7 +6389,7 @@
 	}
       else
 #endif
-        if (INTVAL (xoperands[1]) <= 0x7FFF)
+        if (INTVAL (xoperands[1]) <= 0x7FFF && !TARGET_5200)
           output_asm_insn (\"add%.w %1,%0\", xoperands);
       else
         output_asm_insn (\"add%.l %1,%0\", xoperands);
@@ -6437,7 +6441,7 @@
 	      || GET_CODE (operands[0]) == MEM)
 	  /* clr insns on 68000 read before writing.
 	     This isn't so on the 68010, but we have no TARGET_68010.  */
-	  && (TARGET_68020
+	  && ((TARGET_68020 || TARGET_5200)
 	      || !(GET_CODE (operands[0]) == MEM
 		   && MEM_VOLATILE_P (operands[0]))))
 	return \"clr%.w %0\";