rtl.h (loc_mentioned_in_p): Declare.

	* rtl.h (loc_mentioned_in_p): Declare.
	* reload.c (loc_mentioned_in_p): Moved from here...
	* rtlanal.c (loc_mentioned_in_p): to here.  No longer static.
	Fix loop increment for 'E' handling.
	* loop.c (strength_reduce): When doing biv->giv conversion,
	take multi-insn biv increments into account.

From-SVN: r34150

1 files changed, 26 insertions, 0 deletions

diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index e9a9816..8af6c7c 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -2358,3 +2358,29 @@ insns_safe_to_move_p (from, to, new_to)
   
   return 0;
 }
+
+/* Return non-zero if IN contains a piece of rtl that has the address LOC */
+int
+loc_mentioned_in_p (loc, in)
+     rtx *loc, in;
+{
+  enum rtx_code code = GET_CODE (in);
+  const char *fmt = GET_RTX_FORMAT (code);
+  int i, j;
+
+  for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
+    {
+      if (loc == &in->fld[i].rtx)
+	return 1;
+      if (fmt[i] == 'e')
+	{
+	  if (loc_mentioned_in_p (loc, XEXP (in, i)))
+	    return 1;
+	}
+      else if (fmt[i] == 'E')
+	for (j = XVECLEN (in, i) - 1; j >= 0; j--)
+	  if (loc_mentioned_in_p (loc, XVECEXP (in, i, j)))
+	    return 1;
+    }
+  return 0;
+}