[patch] h8300 port: Replace hard coded register numbers with appropriate macros.

[Kazu Hirata]

Hi,

Attached is a patch to replace hard coded register numbers with
appropriate macros.

Tested on h8300 port.  Committed.

Kazu Hirata

2002-02-17  Kazu Hirata  <kazu@hxi.com>

	* config/h8300/h8300.h (CONDITIONAL_REGISTER_USAGE): Replace a
	hard coded register number with an appropriate macro.
	(HARD_REGNO_MODE_OK): Likewise.
	(ARG_POINTER_REGNUM): Likewise.
	(STATIC_CHAIN_REGNUM): Likewise.
	(RETURN_ADDRESS_POINTER_REGNUM): Likewise.
	* config/h8300/h8300.md (define_constants): Define more
	register numbers.

Index: h8300.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/h8300/h8300.h,v
retrieving revision 1.75
diff -u -r1.75 h8300.h
--- h8300.h	2002/02/14 13:25:30	1.75
+++ h8300.h	2002/02/17 12:10:59
@@ -294,10 +294,10 @@
 #define REG_ALLOC_ORDER \
   { 2, 3, 0, 1, 4, 5, 6, 8, 7, 9, 10}
 
-#define CONDITIONAL_REGISTER_USAGE		\
-{						\
-  if (!TARGET_MAC)				\
-    fixed_regs[8] = call_used_regs[8] = 1;	\
+#define CONDITIONAL_REGISTER_USAGE			\
+{							\
+  if (!TARGET_MAC)					\
+    fixed_regs[MAC_REG] = call_used_regs[MAC_REG] = 1;	\
 }
 
 /* Return number of consecutive hard regs needed starting at reg REGNO
@@ -322,7 +322,7 @@
 #define HARD_REGNO_MODE_OK(REGNO, MODE)					\
   (TARGET_H8300								\
    ? ((((REGNO) & 1) == 0) || ((MODE) == HImode) || ((MODE) == QImode))	\
-   : (REGNO) == 8 ? (MODE) == SImode : 1)
+   : (REGNO) == MAC_REG ? (MODE) == SImode : 1)
 
 /* Value is 1 if it is a good idea to tie two pseudo registers
    when one has mode MODE1 and one has mode MODE2.
@@ -355,14 +355,14 @@
 #define FRAME_POINTER_REQUIRED 0
 
 /* Base register for access to arguments of the function.  */
-#define ARG_POINTER_REGNUM 9
+#define ARG_POINTER_REGNUM AP_REG
 
 /* Register in which static-chain is passed to a function.  */
-#define STATIC_CHAIN_REGNUM 3
+#define STATIC_CHAIN_REGNUM SC_REG
 
 /* Fake register that holds the address on the stack of the
    current function's return address.  */
-#define RETURN_ADDRESS_POINTER_REGNUM 10
+#define RETURN_ADDRESS_POINTER_REGNUM RAP_REG
 
 /* A C expression whose value is RTL representing the value of the return
    address for the frame COUNT steps up from the current frame.
Index: h8300.md
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/h8300/h8300.md,v
retrieving revision 1.75
diff -u -r1.75 h8300.md
--- h8300.md	2002/02/13 12:51:53	1.75
+++ h8300.md	2002/02/17 12:10:59
@@ -51,8 +51,12 @@
 ;; ----------------------------------------------------------------------
 
 (define_constants
-  [(FP_REG	6)
-   (SP_REG	7)])
+  [(SC_REG	 3)
+   (FP_REG	 6)
+   (SP_REG	 7)
+   (MAC_REG	 8)
+   (AP_REG	 9)
+   (RAP_REG	10)])
 
 ;; ----------------------------------------------------------------------
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