Small reload cleanups

From-SVN: r30193

gcc/ChangeLog

+Tue Oct 26 15:42:56 1999  Bernd Schmidt  <bernds@cygnus.co.uk>
+
+	* reload.c (find_reloads): Compute mode and nregs fields of all
+	reloads.
+	* reload1.c (calculate_needs_all_insns): Simplify a bit.
+	(calculate_needs): Use precomputed mode/nregs values.
+	(allocate_reload_reg): Likewise.
+	Break out two...
+	(failed_reload, set_reload_reg): ... new functions.
+	(choose_reload_regs_init): New function, mostly broken out from...
+	(choose_reload_regs): ... here.  Lose all the save_xxx nonsense.
+	Also lose one #if 0 block.
+
 Tue Oct 26 02:48:32 1999  Marc Espie <espie@cvs.openbsd.org>
 
 	* Makefile.in (AR_FOR_TARGET, RANLIB_FOR_TARGET):  Fix target name 

gcc/reload.c

@@ -4174,6 +4174,18 @@ find_reloads (insn, replace, ind_levels, live_known, reload_reg_p)
 	}
     }
 
+  /* Compute reload_mode and reload_nregs.  */
+  for (i = 0; i < n_reloads; i++)
+    {
+      rld[i].mode
+	= (rld[i].inmode == VOIDmode
+	   || (GET_MODE_SIZE (rld[i].outmode)
+	       > GET_MODE_SIZE (rld[i].inmode)))
+	  ? rld[i].outmode : rld[i].inmode;
+
+      rld[i].nregs = CLASS_MAX_NREGS (rld[i].class, rld[i].mode);
+    }
+
   return retval;
 }