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List:       gcc-patches
Subject:    Remove last_parm_insn
From:       Richard Henderson <rth () redhat ! com>
Date:       2004-06-30 23:58:48
Message-ID: 20040630235848.GA29573 () redhat ! com
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This variable is write-only.


r~


        * function.h (struct function): Remove x_last_parm_insn,
        inl_last_parm_insn.
        (last_parm_insn): Remove.
        * function.c (free_after_compilation): Don't clear them.
        (fixup_var_refs_insn, assign_parms): Don't set them.

Index: function.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/function.c,v
retrieving revision 1.532
diff -c -p -d -r1.532 function.c
*** function.c	30 Jun 2004 22:30:29 -0000	1.532
--- function.c	30 Jun 2004 23:56:12 -0000
*************** free_after_compilation (struct function 
*** 446,457 ****
    f->x_tail_recursion_reentry = NULL;
    f->x_arg_pointer_save_area = NULL;
    f->x_parm_birth_insn = NULL;
-   f->x_last_parm_insn = NULL;
    f->x_parm_reg_stack_loc = NULL;
    f->fixup_var_refs_queue = NULL;
    f->original_arg_vector = NULL;
    f->original_decl_initial = NULL;
-   f->inl_last_parm_insn = NULL;
    f->epilogue_delay_list = NULL;
  }
  
--- 446,455 ----
*************** fixup_var_refs_insn (rtx insn, rtx var, 
*** 1824,1835 ****
        fixup_var_refs_1 (var, promoted_mode, &PATTERN (insn), insn,
  			&replacements, no_share);
  
-       /* If this is last_parm_insn, and any instructions were output
- 	 after it to fix it up, then we must set last_parm_insn to
- 	 the last such instruction emitted.  */
-       if (insn == last_parm_insn)
- 	last_parm_insn = PREV_INSN (next_insn);
- 
        while (replacements)
  	{
  	  struct fixup_replacement *next;
--- 1822,1827 ----
*************** assign_parms (tree fndecl)
*** 5292,5299 ****
        SET_DECL_RTL (result, x);
      }
  
-   last_parm_insn = get_last_insn ();
- 
    /* We have aligned all the args, so add space for the pretend args.  */
    stack_args_size.constant += extra_pretend_bytes;
    current_function_args_size = stack_args_size.constant;
--- 5284,5289 ----
Index: function.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/function.h,v
retrieving revision 1.119
diff -c -p -d -r1.119 function.h
*** function.h	19 Jun 2004 18:52:04 -0000	1.119
--- function.h	30 Jun 2004 23:56:12 -0000
*************** struct function GTY(())
*** 296,305 ****
    /* Insn after which register parms and SAVE_EXPRs are born, if nonopt.  */
    rtx x_parm_birth_insn;
  
-   /* Last insn of those whose job was to put parms into their nominal
-      homes.  */
-   rtx x_last_parm_insn;
- 
    /* 1 + last pseudo register number possibly used for loading a copy
       of a parameter of this function.  */
    unsigned int x_max_parm_reg;
--- 296,301 ----
*************** struct function GTY(())
*** 337,345 ****
    int no_debugging_symbols;
    rtvec original_arg_vector;
    tree original_decl_initial;
-   /* Last insn of those whose job was to put parms into their nominal
-      homes.  */
-   rtx inl_last_parm_insn;
    /* Highest label number in current function.  */
    int inl_max_label_num;
  
--- 333,338 ----
*************** extern int trampolines_created;
*** 550,556 ****
  #define tail_recursion_reentry (cfun->x_tail_recursion_reentry)
  #define arg_pointer_save_area (cfun->x_arg_pointer_save_area)
  #define rtl_expr_chain (cfun->x_rtl_expr_chain)
- #define last_parm_insn (cfun->x_last_parm_insn)
  #define function_call_count (cfun->x_function_call_count)
  #define used_temp_slots (cfun->x_used_temp_slots)
  #define avail_temp_slots (cfun->x_avail_temp_slots)
--- 543,548 ----
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