200x-xx-xx Kazu Hirata <kazu@codesourcery.com> Richard Sandiford <richard@codesourcery.com>

gcc/
200x-xx-xx  Kazu Hirata  <kazu@codesourcery.com>
	    Richard Sandiford  <richard@codesourcery.com>

	* config/m68k/m68k.h (DATA_REGNO_P, ADDRESS_REGNO_P, INT_REGNO_P)
	(FP_REGNO_P): New macros.
	(REGNO_OK_FOR_INDEX_P, REGNO_OK_FOR_BASE_P, REGNO_OK_FOR_DATA_P)
	(REGNO_OK_FOR_FP_P, REG_OK_FOR_INDEX_P, REG_OK_FOR_BASE_P): Use them.
	(EH_RETURN_STACKADJ_RTX): Use A0_REG.
	* config/m68k/m68k.c (m68k_regno_mode_ok): Use the new REGNO macros.

Co-Authored-By: Richard Sandiford <richard@codesourcery.com>

From-SVN: r120918

gcc/ChangeLog

+2007-01-18  Kazu Hirata  <kazu@codesourcery.com>
+	    Richard Sandiford  <richard@codesourcery.com>
+
+	* config/m68k/m68k.h (DATA_REGNO_P, ADDRESS_REGNO_P, INT_REGNO_P)
+	(FP_REGNO_P): New macros.
+	(REGNO_OK_FOR_INDEX_P, REGNO_OK_FOR_BASE_P, REGNO_OK_FOR_DATA_P)
+	(REGNO_OK_FOR_FP_P, REG_OK_FOR_INDEX_P, REG_OK_FOR_BASE_P): Use them.
+	(EH_RETURN_STACKADJ_RTX): Use A0_REG.
+	* config/m68k/m68k.c (m68k_regno_mode_ok): Use the new REGNO macros.
+
 2007-01-18  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* config.gcc (m68k-*-aout*, m68k-*-coff*, m68020-*-elf*, m68k-*-elf*)

gcc/config/m68k/m68k.c

@@ -3832,13 +3832,13 @@ m68k_hard_regno_rename_ok (unsigned int old_reg ATTRIBUTE_UNUSED,
 bool
 m68k_regno_mode_ok (int regno, enum machine_mode mode)
 {
-  if (regno < 8)
+  if (DATA_REGNO_P (regno))
     {
       /* Data Registers, can hold aggregate if fits in.  */
       if (regno + GET_MODE_SIZE (mode) / 4 <= 8)
 	return true;
     }
-  else if (regno < 16)
+  else if (ADDRESS_REGNO_P (regno))
     {
       /* Address Registers, can't hold bytes, can hold aggregate if
 	 fits in.  */
@@ -3847,7 +3847,7 @@ m68k_regno_mode_ok (int regno, enum machine_mode mode)
       if (regno + GET_MODE_SIZE (mode) / 4 <= 16)
 	return true;
     }
-  else if (regno < 24)
+  else if (FP_REGNO_P (regno))
     {
       /* FPU registers, hold float or complex float of long double or
 	 smaller.  */

gcc/config/m68k/m68k.h

@@ -741,14 +741,33 @@ __transfer_from_trampoline ()					\
 
 /* Macros to check register numbers against specific register classes.  */
 
-#define REGNO_OK_FOR_INDEX_P(REGNO) \
-((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16)
-#define REGNO_OK_FOR_BASE_P(REGNO) \
-(((REGNO) ^ 010) < 8 || (unsigned) (reg_renumber[REGNO] ^ 010) < 8)
-#define REGNO_OK_FOR_DATA_P(REGNO) \
-((REGNO) < 8 || (unsigned) reg_renumber[REGNO] < 8)
-#define REGNO_OK_FOR_FP_P(REGNO) \
-(((REGNO) ^ 020) < 8 || (unsigned) (reg_renumber[REGNO] ^ 020) < 8)
+/* True for data registers, D0 through D7.  */
+#define DATA_REGNO_P(REGNO) ((unsigned int) (REGNO) < 8)
+
+/* True for address registers, A0 through A7.  */
+#define ADDRESS_REGNO_P(REGNO) (((unsigned int) (REGNO) - 8) < 8)
+
+/* True for integer registers, D0 through D7 and A0 through A7.  */
+#define INT_REGNO_P(REGNO) ((unsigned int) (REGNO) < 16)
+
+/* True for floating point registers, FP0 through FP7.  */
+#define FP_REGNO_P(REGNO) (((unsigned int) (REGNO) - 16) < 8)
+
+#define REGNO_OK_FOR_INDEX_P(REGNO)			\
+  (INT_REGNO_P (REGNO)					\
+   || INT_REGNO_P (reg_renumber[REGNO]))
+
+#define REGNO_OK_FOR_BASE_P(REGNO)			\
+  (ADDRESS_REGNO_P (REGNO)				\
+   || ADDRESS_REGNO_P (reg_renumber[REGNO]))
+
+#define REGNO_OK_FOR_DATA_P(REGNO)			\
+  (DATA_REGNO_P (REGNO)					\
+   || DATA_REGNO_P (reg_renumber[REGNO]))
+
+#define REGNO_OK_FOR_FP_P(REGNO)			\
+  (FP_REGNO_P (REGNO)					\
+   || FP_REGNO_P (reg_renumber[REGNO]))
 
 /* Now macros that check whether X is a register and also,
    strictly, whether it is in a specified class.
@@ -793,10 +812,11 @@ __transfer_from_trampoline ()					\
 
 /* Nonzero if X is a hard reg that can be used as an index
    or if it is a pseudo reg.  */
-#define REG_OK_FOR_INDEX_P(X) ((REGNO (X) ^ 020) >= 8)
+#define REG_OK_FOR_INDEX_P(X) !FP_REGNO_P (REGNO (X))
 /* Nonzero if X is a hard reg that can be used as a base reg
    or if it is a pseudo reg.  */
-#define REG_OK_FOR_BASE_P(X) ((REGNO (X) & ~027) != 0)
+#define REG_OK_FOR_BASE_P(X) \
+  (!DATA_REGNO_P (REGNO (X)) && !FP_REGNO_P (REGNO (X)))
 
 #else
 
@@ -1077,7 +1097,7 @@ do { if (cc_prev_status.flags & CC_IN_68881)			\
 /* Describe how we implement __builtin_eh_return.  */
 #define EH_RETURN_DATA_REGNO(N) \
   ((N) < 2 ? (N) : INVALID_REGNUM)
-#define EH_RETURN_STACKADJ_RTX	gen_rtx_REG (Pmode, 8)
+#define EH_RETURN_STACKADJ_RTX	gen_rtx_REG (Pmode, A0_REG)
 #define EH_RETURN_HANDLER_RTX					    \
   gen_rtx_MEM (Pmode,						    \
 	       gen_rtx_PLUS (Pmode, arg_pointer_rtx,		    \