cse.c (memory_extend_rtx): Remove.

        * cse.c (memory_extend_rtx): Remove.
        (cse_main): Don't set it.
        (cse_insn): Use a local buffer instead.

From-SVN: r89765

gcc/ChangeLog

+2004-10-28  Richard Henderson  <rth@redhat.com>
+
+	* cse.c (memory_extend_rtx): Remove.
+	(cse_main): Don't set it.
+	(cse_insn): Use a local buffer instead.
+
 2004-10-28  Andreas Krebbel  <krebbel1@de.ibm.com>
 
 	* profile.c (branch_prob): Call to init_edge_profiler added.

gcc/cse.c

@@ -400,12 +400,6 @@ static int recorded_label_ref;
 
 static int do_not_record;
 
-#ifdef LOAD_EXTEND_OP
-
-/* Scratch rtl used when looking for load-extended copy of a MEM.  */
-static rtx memory_extend_rtx;
-#endif
-
 /* canon_hash stores 1 in hash_arg_in_memory
    if it notices a reference to memory within the expression being hashed.  */
 
@@ -5154,10 +5148,13 @@ cse_insn (rtx insn, rtx libcall_insn)
 	  && MEM_P (src) && ! do_not_record
 	  && LOAD_EXTEND_OP (mode) != UNKNOWN)
 	{
+	  struct rtx_def memory_extend_buf;
+	  rtx memory_extend_rtx = &memory_extend_buf;
 	  enum machine_mode tmode;
 
 	  /* Set what we are trying to extend and the operation it might
 	     have been extended with.  */
+	  memset (memory_extend_rtx, 0, sizeof(*memory_extend_rtx));
 	  PUT_CODE (memory_extend_rtx, LOAD_EXTEND_OP (mode));
 	  XEXP (memory_extend_rtx, 0) = src;
 
@@ -6675,13 +6672,6 @@ cse_main (rtx f, int nregs, FILE *file)
 
   reg_eqv_table = xmalloc (nregs * sizeof (struct reg_eqv_elem));
 
-#ifdef LOAD_EXTEND_OP
-
-  /* Allocate scratch rtl here.  cse_insn will fill in the memory reference
-     and change the code and mode as appropriate.  */
-  memory_extend_rtx = gen_rtx_ZERO_EXTEND (VOIDmode, NULL_RTX);
-#endif
-
   /* Reset the counter indicating how many elements have been made
      thus far.  */
   n_elements_made = 0;