bitmap.h: Add dump_bitmap...

2001-06-16  Daniel Berlin  <dan@cgsoftware.com>

	* bitmap.h: Add dump_bitmap, bitmap_zero, bitmap_union_of_diffs,
	bitmap_a_or_b, bitmap_a_and_b, bitmap_first_set_bit,
	bitmap_last_set_bit. All for compatibility with sbitmap's.

	*bitmap.c (bitmap_zero): New function.
	(bitmap_union_of_diffs): New function.
	(bitmap_first_set_bit): New function.
	(bitmap_last_set_bit): New function.

From-SVN: r43420

gcc/ChangeLog

+2001-06-16  Daniel Berlin  <dan@cgsoftware.com>
+
+	* bitmap.h: Add dump_bitmap, bitmap_zero, bitmap_union_of_diffs,
+	bitmap_a_or_b, bitmap_a_and_b, bitmap_first_set_bit,
+	bitmap_last_set_bit. All for compatibility with sbitmap's.
+
+	*bitmap.c (bitmap_zero): New function.
+	(bitmap_union_of_diffs): New function.
+	(bitmap_first_set_bit): New function.
+	(bitmap_last_set_bit): New function.
+
 2001-06-16  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* cpp.texi, invoke.texi: Update.

gcc/bitmap.c

@@ -507,7 +507,9 @@ bitmap_operation (to, from1, from2, operation)
 	case BITMAP_IOR:
 	  DOIT (|);
 	  break;
-
+	case BITMAP_IOR_COMPL:
+	  DOIT (|~);
+	  break;
 	case BITMAP_XOR:
 	  DOIT (^);
 	  break;
@@ -676,3 +678,37 @@ bitmap_release_memory ()
       obstack_free (&bitmap_obstack, NULL);
     }
 }
+
+int
+bitmap_union_of_diff (dst, a, b, c)
+     bitmap dst;
+     bitmap a;
+     bitmap b;
+     bitmap c;
+{
+  int changed = 0;
+  bitmap temp = BITMAP_ALLOCA ();
+  bitmap_operation (temp, b, c, BITMAP_AND_COMPL);
+  changed = bitmap_operation (dst, temp, a, BITMAP_IOR);
+  return changed;
+}
+
+int 
+bitmap_first_set_bit (a)
+     bitmap a;
+{
+  int i;
+  EXECUTE_IF_SET_IN_BITMAP (a, 0, i, return i;);
+  return -1;
+}
+
+int 
+bitmap_last_set_bit (a)
+     bitmap a;
+{
+  int i;
+  EXECUTE_IF_SET_IN_BITMAP (a, 0, i, );
+  if (bitmap_bit_p (a, i))
+    return i;
+  return -1;
+}

gcc/bitmap.h

@@ -52,6 +52,7 @@ typedef struct bitmap_head_def {
   bitmap_element *first;	/* First element in linked list. */
   bitmap_element *current;	/* Last element looked at. */
   unsigned int indx;		/* Index of last element looked at. */
+
 } bitmap_head, *bitmap;
 
 /* Enumeration giving the various operations we support.  */
@@ -59,7 +60,8 @@ enum bitmap_bits {
   BITMAP_AND,			/* TO = FROM1 & FROM2 */
   BITMAP_AND_COMPL,		/* TO = FROM1 & ~ FROM2 */
   BITMAP_IOR,			/* TO = FROM1 | FROM2 */
-  BITMAP_XOR			/* TO = FROM1 ^ FROM2 */
+  BITMAP_XOR,			/* TO = FROM1 ^ FROM2 */
+  BITMAP_IOR_COMPL			/* TO = FROM1 | ~FROM2 */
 };
 
 /* Global data */
@@ -104,6 +106,15 @@ extern bitmap bitmap_initialize PARAMS ((bitmap));
 /* Release all memory held by bitmaps.  */
 extern void bitmap_release_memory PARAMS ((void));
 
+/* A few compatibility/functions macros for compatibility with sbitmaps */
+#define dump_bitmap(file, bitmap) bitmap_print (file, bitmap, "", "\n")
+#define bitmap_zero(a) bitmap_clear (a)
+#define bitmap_a_or_b(a,b,c) bitmap_operation (a, b, c, BITMAP_IOR)
+#define bitmap_a_and_b(a,b,c) bitmap_operation (a, b, c, BITMAP_AND)
+extern int bitmap_union_of_diff PARAMS((bitmap, bitmap, bitmap, bitmap));
+extern int bitmap_first_set_bit PARAMS((bitmap));
+extern int bitmap_last_set_bit PARAMS((bitmap));
+
 /* Allocate a bitmap with oballoc.  */
 #define BITMAP_OBSTACK_ALLOC(OBSTACK)				\
   bitmap_initialize ((bitmap) obstack_alloc (OBSTACK, sizeof (bitmap_head)))