Autoincrement examples

[Michael Hayes]

Joern Rennecke writes:
 > It appears your patch is not intended for existing ports.  Or is there
 > another patch for defaults.h ?

Here are my diffs for rtl.h again.  In an earlier post on this thread
I sent this with other patches to support post_modify addressing modes
throughout the compiler.

Michael.

Index: rtl.h
===================================================================
RCS file: /cvs/gcc/egcs/gcc/rtl.h,v
retrieving revision 1.158
diff -c -3 -p -r1.158 rtl.h
*** rtl.h	1999/12/04 03:00:03	1.158
--- rtl.h	1999/12/10 21:32:14
*************** extern const char * const note_insn_name
*** 763,803 ****
  /* 1 means a SYMBOL_REF has been the library function in emit_library_call.  */
  #define SYMBOL_REF_USED(RTX) ((RTX)->used)
  
  /* Define a macro to look for REG_INC notes,
     but save time on machines where they never exist.  */
  
! /* Don't continue this line--convex cc version 4.1 would lose.  */
! #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
! #define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg)))
! #else
! #define FIND_REG_INC_NOTE(insn, reg) 0
  #endif
  
  /* Indicate whether the machine has any sort of auto increment addressing.
     If not, we can avoid checking for REG_INC notes.  */
  
  /* Don't continue this line--convex cc version 4.1 would lose.  */
! #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_INCREMENT) || defined (HAVE_POST_DECREMENT))
  #define AUTO_INC_DEC
  #endif
  
  #ifndef HAVE_PRE_INCREMENT
! #define HAVE_PRE_INCREMENT 0
  #endif
  
  #ifndef HAVE_PRE_DECREMENT
! #define HAVE_PRE_DECREMENT 0
  #endif
  
  #ifndef HAVE_POST_INCREMENT
! #define HAVE_POST_INCREMENT 0
  #endif
  
  #ifndef HAVE_POST_DECREMENT
! #define HAVE_POST_DECREMENT 0
  #endif
  
  
  /* Some architectures do not have complete pre/post increment/decrement
     instruction sets, or only move some modes efficiently.  These macros
     allow us to tune autoincrement generation.  */
--- 763,833 ----
  /* 1 means a SYMBOL_REF has been the library function in emit_library_call.  */
  #define SYMBOL_REF_USED(RTX) ((RTX)->used)
  
+ #if (defined (HAVE_PRE_MODIFY_DISP) || defined (HAVE_PRE_MODIFY_REG) || defined (HAVE_POST_MODIFY_DISP) || defined (HAVE_POST_MODIFY_REG))
+ #define HAVE_AUTO_MODIFY
+ #endif
+ 
+ #if (defined (HAVE_PRE_INCREMENT) || defined (HAVE_POST_INCREMENT))
+ #define HAVE_AUTO_INC
+ #endif
+ 
  /* Define a macro to look for REG_INC notes,
     but save time on machines where they never exist.  */
  
! #if (defined (HAVE_PRE_DECREMENT) || defined (HAVE_POST_DECREMENT))
! #define HAVE_AUTO_DEC
  #endif
  
  /* Indicate whether the machine has any sort of auto increment addressing.
     If not, we can avoid checking for REG_INC notes.  */
  
  /* Don't continue this line--convex cc version 4.1 would lose.  */
! #if (defined (HAVE_AUTO_MODIFY) || defined (HAVE_AUTO_INC) || defined (HAVE_AUTO_DEC))
  #define AUTO_INC_DEC
  #endif
  
+ /* Define a macro to look for REG_INC notes,
+    but save time on machines where they never exist.  */
+ 
+ #ifdef AUTO_INC_DEC
+ #define FIND_REG_INC_NOTE(insn, reg) (find_reg_note ((insn), REG_INC, (reg)))
+ #else
+ #define FIND_REG_INC_NOTE(insn, reg) 0
+ #endif
+ 
  #ifndef HAVE_PRE_INCREMENT
! #define	HAVE_PRE_INCREMENT 0
  #endif
  
  #ifndef HAVE_PRE_DECREMENT
! #define	HAVE_PRE_DECREMENT 0
  #endif
  
  #ifndef HAVE_POST_INCREMENT
! #define	HAVE_POST_INCREMENT 0
  #endif
  
  #ifndef HAVE_POST_DECREMENT
! #define	HAVE_POST_DECREMENT 0
  #endif
  
+ #ifndef HAVE_POST_MODIFY_DISP
+ #define HAVE_POST_MODIFY_DISP 0
+ #endif
+ 
+ #ifndef HAVE_PRE_MODIFY_DISP
+ #define HAVE_PRE_MODIFY_DISP 0
+ #endif
+ 
+ #ifndef HAVE_POST_MODIFY_REG
+ #define HAVE_POST_MODIFY_REG 0
+ #endif
  
+ #ifndef HAVE_PRE_MODIFY_REG
+ #define HAVE_PRE_MODIFY_REG 0
+ #endif
+ 
+ 
  /* Some architectures do not have complete pre/post increment/decrement
     instruction sets, or only move some modes efficiently.  These macros
     allow us to tune autoincrement generation.  */
*************** extern const char * const note_insn_name
*** 834,840 ****
--- 864,902 ----
  #define USE_STORE_PRE_DECREMENT(MODE)   HAVE_PRE_DECREMENT
  #endif
  
+ #ifndef USE_LOAD_POST_MODIFY_DISP
+ #define USE_LOAD_POST_MODIFY_DISP(MODE)   HAVE_POST_MODIFY_DISP
+ #endif
+ 
+ #ifndef USE_LOAD_PRE_MODIFY_DISP
+ #define USE_LOAD_PRE_MODIFY_DISP(MODE)   HAVE_PRE_MODIFY_DISP
+ #endif
+ 
+ #ifndef USE_STORE_POST_MODIFY_DISP
+ #define USE_STORE_POST_MODIFY_DISP(MODE)   HAVE_POST_MODIFY_DISP
+ #endif
+ 
+ #ifndef USE_STORE_PRE_MODIFY_DISP
+ #define USE_STORE_PRE_MODIFY_DISP(MODE)   HAVE_PRE_MODIFY_DISP
+ #endif
+ 
+ #ifndef USE_LOAD_PRE_MODIFY_REG
+ #define USE_LOAD_PRE_MODIFY_REG(MODE)   HAVE_PRE_MODIFY_REG
+ #endif
+ 
+ #ifndef USE_LOAD_POST_MODIFY_REG
+ #define USE_LOAD_POST_MODIFY_REG(MODE)   HAVE_POST_MODIFY_REG
+ #endif
+ 
+ #ifndef USE_STORE_PRE_MODIFY_REG
+ #define USE_STORE_PRE_MODIFY_REG(MODE)   HAVE_PRE_MODIFY_REG
+ #endif
+ 
+ #ifndef USE_STORE_POST_MODIFY_REG
+ #define USE_STORE_POST_MODIFY_REG(MODE)   HAVE_POST_MODIFY_REG
+ #endif
  
+ 
  /* Accessors for RANGE_INFO.  */
  /* For RANGE_{START,END} notes return the RANGE_START note.  */
  #define RANGE_INFO_NOTE_START(INSN) XCEXP (INSN, 0, RANGE_INFO)