sh.c (fp_arith_reg_operand): Actually test if reg is suitable for FP arithmetic.

	* sh.c (fp_arith_reg_operand): Actually test if reg is suitable
	for FP arithmetic.  Changed caller.
	* sh.md (subsf3, subsf_i): Use fp_arith_reg_operand.

From-SVN: r25670

gcc/ChangeLog

+Wed Mar 10 19:04:31 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* sh.c (fp_arith_reg_operand): Actually test if reg is suitable
+	for FP arithmetic.  Changed caller.
+	* sh.md (subsf3, subsf_i): Use fp_arith_reg_operand.
+
 Wed Mar 10 18:56:31 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
 
 	* reload1.c (choose_reload_regs): When inheriting from the frame

gcc/config/sh/sh.c

@@ -4192,8 +4192,8 @@ fp_arith_reg_operand (op, mode)
       else
 	return 1;
 
-      return (regno != T_REG && regno != PR_REG && regno > 15
-	      && regno != MACH_REG && regno != MACL_REG);
+      return (regno >= FIRST_PSEUDO_REGISTER
+	      || (regno >= FIRST_FP_REG && regno <= LAST_FP_REG));
     }
   return 0;
 }
@@ -4208,7 +4208,21 @@ fp_extended_operand (op, mode)
       op = XEXP (op, 0);
       mode = GET_MODE (op);
     }
-  return fp_arith_reg_operand (op, mode);
+  if (register_operand (op, mode))
+    {
+      int regno;
+
+      if (GET_CODE (op) == REG)
+	regno = REGNO (op);
+      else if (GET_CODE (op) == SUBREG && GET_CODE (SUBREG_REG (op)) == REG)
+	regno = REGNO (SUBREG_REG (op));
+      else
+	return 1;
+
+      return (regno != T_REG && regno != PR_REG && regno > 15
+	      && regno != MACH_REG && regno != MACL_REG);
+    }
+  return 0;
 }
 
 /* Returns 1 if OP is a valid source operand for an arithmetic insn.  */

gcc/config/sh/sh.md

@@ -3870,16 +3870,16 @@
   [(set_attr "type" "fp")])
 
 (define_expand "subsf3"
-  [(match_operand:SF 0 "arith_reg_operand" "")
-   (match_operand:SF 1 "arith_reg_operand" "")
-   (match_operand:SF 2 "arith_reg_operand" "")]
+  [(match_operand:SF 0 "fp_arith_reg_operand" "")
+   (match_operand:SF 1 "fp_arith_reg_operand" "")
+   (match_operand:SF 2 "fp_arith_reg_operand" "")]
   "TARGET_SH3E"
   "{ expand_sf_binop (&gen_subsf3_i, operands); DONE; }")
 
 (define_insn "subsf3_i"
-  [(set (match_operand:SF 0 "arith_reg_operand" "=f")
-	(minus:SF (match_operand:SF 1 "arith_reg_operand" "0")
-		 (match_operand:SF 2 "arith_reg_operand" "f")))
+  [(set (match_operand:SF 0 "fp_arith_reg_operand" "=f")
+	(minus:SF (match_operand:SF 1 "fp_arith_reg_operand" "0")
+		 (match_operand:SF 2 "fp_arith_reg_operand" "f")))
    (use (match_operand:PSI 3 "fpscr_operand" "c"))]
   "TARGET_SH3E"
   "fsub	%2,%0"