expmed.c (init_expmed): Don't free objects we make.

	* expmed.c (init_expmed): Don't free objects we make.
	* emit-rtl.c (gen_rtx_CONST_INT, init_emit_once): Minor cleanups.

From-SVN: r33057

gcc/ChangeLog

 Mon Apr 10 07:21:13 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
+	* expmed.c (init_expmed): Don't free objects we make.
+	* emit-rtl.c (gen_rtx_CONST_INT, init_emit_once): Minor cleanups.
+
 	* expr.c (get_inner_reference): Correct some WITH_RECORD_EXPR cases.
 	(expand_expr, case CONVERT_EXPR): Pass proper alignment to store_field.
 

gcc/emit-rtl.c

@@ -248,27 +248,26 @@ gen_rtx_CONST_INT (mode, arg)
 #endif
 
   /* Look up the CONST_INT in the hash table.  */
-  slot = htab_find_slot_with_hash (const_int_htab, 
-				   &arg,
-				   (hashval_t) arg,
-				   /*insert=*/1);
-  if (!*slot)
+  slot = htab_find_slot_with_hash (const_int_htab, &arg, (hashval_t) arg, 1);
+  if (*slot == 0)
     {
       if (!ggc_p)
 	{
 	  push_obstacks_nochange ();
 	  end_temporary_allocation ();
+	  *slot = gen_rtx_raw_CONST_INT (VOIDmode, arg);
+	  pop_obstacks ();
 	}
-      *slot = gen_rtx_raw_CONST_INT (VOIDmode, arg);
-      if (!ggc_p)
-	pop_obstacks ();
+      else
+	*slot = gen_rtx_raw_CONST_INT (VOIDmode, arg);
     }
 
   return (rtx) *slot;
 }
 
-/* CONST_DOUBLEs needs special handling because its length is known
+/* CONST_DOUBLEs needs special handling because their length is known
    only at run-time.  */
+
 rtx
 gen_rtx_CONST_DOUBLE (mode, arg0, arg1, arg2)
      enum machine_mode mode;
@@ -4157,10 +4156,8 @@ init_emit_once (line_numbers)
   ggc_add_rtx_root (&return_address_pointer_rtx, 1);
 
   /* Initialize the CONST_INT hash table.  */
-  const_int_htab = htab_create (37, 
-				const_int_htab_hash, 
-				const_int_htab_eq, 
-				NULL);
+  const_int_htab = htab_create (37, const_int_htab_hash, 
+				const_int_htab_eq, NULL);
   ggc_add_root (&const_int_htab, 1, sizeof (const_int_htab), 
 		rtx_htab_mark);
 }

gcc/expmed.c

@@ -90,7 +90,6 @@ static int mul_highpart_cost[NUM_MACHINE_MODES];
 void
 init_expmed ()
 {
-  char *free_point;
   /* This is "some random pseudo register" for purposes of calling recog
      to see what insns exist.  */
   rtx reg = gen_rtx_REG (word_mode, 10000);
@@ -101,11 +100,6 @@ init_expmed ()
 
   start_sequence ();
 
-  /* Since we are on the permanent obstack, we must be sure we save this
-     spot AFTER we call start_sequence, since it will reuse the rtl it
-     makes.  */
-  free_point = (char *) oballoc (0);
-
   reg = gen_rtx_REG (word_mode, 10000);
 
   zero_cost = rtx_cost (const0_rtx, 0);
@@ -191,9 +185,7 @@ init_expmed ()
 	}
     }
 
-  /* Free the objects we just allocated.  */
   end_sequence ();
-  obfree (free_point);
 }
 
 /* Return an rtx representing minus the value of X.