2001-07-27 Daniel Berlin <dan@cgsoftware.com>

	* regclass.c (reg_scan_mark_refs): Increment REG_N_REFS when we
	increment REG_N_SETS.

2001-07-26  Daniel Berlin  <dan@cgsoftware.com>

	* sbitmap.h: New prototype for sbitmap_a_xor_b.

	* sbitmap.c (sbitmap_a_xor_b): New function.
	#ifdef the basic block stuff on the define IN_GCC.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44460 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 34 insertions, 0 deletions

diff --git a/gcc/sbitmap.c b/gcc/sbitmap.c
index eb1bf5a2575..5490a6321d1 100644
--- a/gcc/sbitmap.c
+++ b/gcc/sbitmap.c
@@ -99,6 +99,13 @@ sbitmap_copy (dst, src)
   memcpy (dst->elms, src->elms, sizeof (SBITMAP_ELT_TYPE) * dst->size);
 }
 
+/* Determine if a == b. */
+int
+sbitmap_equal (a, b)
+     sbitmap a, b;
+{
+  return !memcmp (a->elms, b->elms, sizeof (SBITMAP_ELT_TYPE) * a->size);
+}
 /* Zero all elements in a bitmap.  */
 
 void
@@ -230,6 +237,31 @@ sbitmap_a_and_b (dst, a, b)
   return changed;
 }
 
+/* Set DST to be (A xor B)).
+   Return non-zero if any change is made. */
+
+int
+sbitmap_a_xor_b (dst, a, b)
+     sbitmap dst, a, b;
+{
+  unsigned int i;
+  sbitmap_ptr dstp, ap, bp;
+  int changed = 0;
+  
+  for (dstp = dst->elms, ap = a->elms, bp = b->elms, i = 0; i < dst->size;
+       i++, dstp++)
+    {
+      SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
+      
+      if (*dstp != tmp)
+	{
+	  changed = 1;
+	  *dstp = tmp;
+	}
+    }
+  return changed;
+}
+
 /* Set DST to be (A or B)).
    Return non-zero if any change is made.  */
 
@@ -324,6 +356,7 @@ sbitmap_a_and_b_or_c (dst, a, b, c)
   return changed;
 }
 
+#ifdef IN_GCC
 /* Set the bitmap DST to the intersection of SRC of successors of
    block number BB, using the new flow graph structures.  */
 
@@ -483,6 +516,7 @@ sbitmap_union_of_preds (dst, src, bb)
 	  *r++ |= *p++;
       }
 }
+#endif
 
 /* Return number of first bit set in the bitmap, -1 if none.  */