loop.c (loop_number): Delete function.

        * loop.c (loop_number): Delete function.  Change all references
        to use uid_loop_num array.
        * loop.h (loop_number): Delete declaration.
        * unroll.c (unroll_loop): Change "loop_number" references to
        use uid_loop_num instead.
Still cleaning up haifa.

From-SVN: r15623

gcc/ChangeLog

 Sun Sep 21 17:45:45 1997  Jeffrey A Law  (law@cygnus.com)
 
+	* loop.c (loop_number): Delete function.  Change all references
+	to use uid_loop_num array.
+	* loop.h (loop_number): Delete declaration.
+	* unroll.c (unroll_loop): Change "loop_number" references to
+	use uid_loop_num instead.
+
 	* loop.c (loop_unroll_factor): Move outside #ifdef HAIFA
 	conditional.
 	(loop_unroll_iter): Remove unused variable and all references.

gcc/loop.c

@@ -327,9 +327,6 @@ static void insert_bct ();
 
 /* Auxiliary function that inserts the bct pattern into the loop */
 static void instrument_loop_bct ();
-
-
-int loop_number ();
 #endif  /* HAIFA */
 
 /* Indirect_jump_in_function is computed once per function.  */
@@ -7066,7 +7063,7 @@ void analyze_loop_iterations (loop_start, loop_end)
   enum machine_mode original_mode;
 
   /* find the number of the loop */
-  int loop_num = loop_number (loop_start, loop_end);
+  int loop_num = uid_loop_num [INSN_UID (loop_start)];
 
   /* we change our mind only when we are sure that loop will be instrumented */
   loop_can_insert_bct[loop_num] = 0;
@@ -7257,7 +7254,7 @@ insert_bct (loop_start, loop_end)
      machine has */
   enum machine_mode loop_var_mode = SImode;
 
-  int loop_num = loop_number (loop_start, loop_end);
+  int loop_num = uid_loop_num [INSN_UID (loop_start)];
 
   /* get loop-variables. No need to check that these are valid - already
      checked in analyze_loop_iterations ().  */
@@ -7569,23 +7566,6 @@ instrument_loop_bct (loop_start, loop_end, loop_num_iterations)
 
 #endif /* HAVE_decrement_and_branch_on_count */
 }
-
-/* calculate the uid of the given loop */
-int
-loop_number (loop_start, loop_end)
-     rtx loop_start, loop_end;
-{
-  int loop_num = -1;
-
-  /* assume that this insn contains the LOOP_START
-     note, so it will not be changed by the loop unrolling */
-  loop_num = uid_loop_num[INSN_UID (loop_start)];
-  /* sanity check - should never happen */
-  if (loop_num == -1)
-    abort ();
-
-  return loop_num;
-}
 #endif	/* HAIFA */
 
 /* Scan the function and determine whether it has indirect (computed) jumps.

gcc/loop.h

@@ -187,6 +187,5 @@ extern int *loop_unroll_factor;
 /* variables for interaction between unroll.c and loop.c, for
    the insertion of branch-on-count instruction. */
 extern rtx *loop_start_value;
-extern int loop_number();
 #endif  /* HAIFA */
 

gcc/unroll.c

@@ -1098,7 +1098,7 @@ unroll_loop (loop_end, insn_count, loop_start, end_insert_before,
 #ifdef HAIFA
 	  /* Fix the initial value for the loop as needed.  */
 	  if (loop_n_iterations <= 0)
-	    loop_start_value [loop_number (loop_start, loop_end)]
+	    loop_start_value [uid_loop_num [INSN_UID (loop_start)]]
 	      = initial_value;
 #endif
 	}
@@ -1117,9 +1117,9 @@ unroll_loop (loop_end, insn_count, loop_start, end_insert_before,
 
   /* Keep track of the unroll factor for each loop.  */
   if (unroll_type == UNROLL_COMPLETELY)
-    loop_unroll_factor [loop_number (loop_start, loop_end)] = -1;
+    loop_unroll_factor [uid_loop_num [INSN_UID (loop_start)]] = -1;
   else
-    loop_unroll_factor [loop_number (loop_start, loop_end)] = unroll_number;
+    loop_unroll_factor [uid_loop_num [INSN_UID (loop_start)]] = unroll_number;
 
 
   /* For each biv and giv, determine whether it can be safely split into