pa-64.h (ARG_POINTER_REGNUM, [...]): Delete.

	* pa-64.h (ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Delete.
	* pa.h (ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Modify for hppa64.
	* pa32-regs.h (REG_ALLOC_ORDER): Reorder caller-saved registers.
	* pa64-regs.h (REG_ALLOC_ORDER): Likewise.

From-SVN: r84649

gcc/ChangeLog

+2004-07-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	* pa-64.h (ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Delete.
+	* pa.h (ARG_POINTER_REGNUM, STATIC_CHAIN_REGNUM): Modify for hppa64.
+	* pa32-regs.h (REG_ALLOC_ORDER): Reorder caller-saved registers.
+	* pa64-regs.h (REG_ALLOC_ORDER): Likewise.
+
 2004-07-13  Diego Novillo  <dnovillo@redhat.com>
 
 	PR tree-optimization/16443

gcc/config/pa/pa-64.h

@@ -74,17 +74,12 @@ Boston, MA 02111-1307, USA.  */
    ?!? This may not work reliably.  Keep an eye out for problems.  */
 #undef SECONDARY_MEMORY_NEEDED_RTX
 
-
 /* ?!? This needs to be made compile-time selectable.
 
    The PA64 runtime model has arguments that grow to higher addresses
    (like most other targets).  The older runtime model has arguments
    that grow to lower addresses.  What fun.  */
 #undef ARGS_GROW_DOWNWARD
-#undef ARG_POINTER_REGNUM
-#define ARG_POINTER_REGNUM 29
-#undef STATIC_CHAIN_REGNUM
-#define STATIC_CHAIN_REGNUM 31
 
 /* If defined, a C expression which determines whether the default
    implementation of va_arg will attempt to pad down before reading the

gcc/config/pa/pa.h

@@ -533,10 +533,10 @@ do {								\
   do {(VAR) = - compute_frame_size (get_frame_size (), 0);} while (0)
 
 /* Base register for access to arguments of the function.  */
-#define ARG_POINTER_REGNUM 3
+#define ARG_POINTER_REGNUM (TARGET_64BIT ? 29 : 3)
 
 /* Register in which static-chain is passed to a function.  */
-#define STATIC_CHAIN_REGNUM 29
+#define STATIC_CHAIN_REGNUM (TARGET_64BIT ? 31 : 29)
 
 /* Register used to address the offset table for position-independent
    data references.  */

gcc/config/pa/pa32-regs.h

@@ -119,7 +119,8 @@
    registers will generally not be allocated across a call).
 
    Experimentation has shown slightly better results by allocating
-   FP registers first.  
+   FP registers first.  We allocate the caller-saved registers more
+   or less in reverse order to their allocation as arguments.
 
    FP registers are ordered so that all L registers are selected before
    R registers.  This works around a false dependency interlock on the
@@ -130,14 +131,14 @@
  {					\
   /* caller-saved fp regs.  */		\
   68, 70, 72, 74, 76, 78, 80, 82,	\
-  84, 86, 40, 42, 44, 46, 32, 34,	\
-  36, 38,				\
+  84, 86, 40, 42, 44, 46, 38, 36,	\
+  34, 32,				\
   69, 71, 73, 75, 77, 79, 81, 83,	\
-  85, 87, 41, 43, 45, 47, 33, 35,	\
-  37, 39,				\
+  85, 87, 41, 43, 45, 47, 39, 37,	\
+  35, 33,				\
   /* caller-saved general regs.  */	\
-  19, 20, 21, 22, 23, 24, 25, 26,	\
-  27, 28, 29, 31,  2,			\
+  28, 19, 20, 21, 22, 31, 27, 29,	\
+  23, 24, 25, 26,  2,			\
   /* callee-saved fp regs.  */		\
   48, 50, 52, 54, 56, 58, 60, 62,	\
   64, 66,				\

gcc/config/pa/pa64-regs.h

@@ -118,22 +118,18 @@ Boston, MA 02111-1307, USA.  */
    registers will generally not be allocated across a call).
 
    Experimentation has shown slightly better results by allocating
-   FP registers first.  
-
-   FP registers are ordered so that all L registers are selected before
-   R registers.  This works around a false dependency interlock on the
-   PA8000 when accessing the high and low parts of an FP register
-   independently.  */
+   FP registers first.  We allocate the caller-saved registers more
+   or less in reverse order to their allocation as arguments.  */
 
 #define REG_ALLOC_ORDER \
  {					\
   /* caller-saved fp regs.  */		\
   50, 51, 52, 53, 54, 55, 56, 57,	\
-  58, 59, 36, 37, 38, 39, 32, 33,	\
-  34, 35,				\
+  58, 59, 39, 38, 37, 36, 35, 34,	\
+  33, 32,				\
   /* caller-saved general regs.  */	\
-  19, 20, 21, 22, 23, 24, 25, 26,	\
-  27, 28, 29, 31,  2,			\
+  28, 31, 19, 20, 21, 22, 23, 24,	\
+  25, 26, 29,  2,			\
   /* callee-saved fp regs.  */		\
   40, 41, 42, 43, 44, 45, 46, 47,	\
   48, 49,				\
@@ -141,7 +137,7 @@ Boston, MA 02111-1307, USA.  */
    3,  4,  5,  6,  7,  8,  9, 10, 	\
   11, 12, 13, 14, 15, 16, 17, 18,	\
   /* special registers.  */		\
-   1, 30,  0, 60}
+   1, 27, 30,  0, 60}
 
 
 /* Return number of consecutive hard regs needed starting at reg REGNO