rtlanal.c (reg_overlap_mentioned_p): Treat parallels in the same way emit_group_load does.

	* rtlanal.c (reg_overlap_mentioned_p): Treat parallels in the
	same way emit_group_load does.

From-SVN: r33715

2 files changed, 21 insertions, 11 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e0e69d5..84e96eb 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-05-05  Richard Henderson  <rth@cygnus.com>
+
+	* rtlanal.c (reg_overlap_mentioned_p): Treat parallels in the
+	same way emit_group_load does.
+
 2000-05-05 Mark Elbrecht <snowball3@bigfoot.com>
 
 	* toplev.c (output_file_directive): Use IS_DIR_SEPARATOR.
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 2f9b376..8a3eb62 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -992,17 +992,22 @@ reg_overlap_mentioned_p (x, in)
       return reg_mentioned_p (x, in);
 
     case PARALLEL:
-      if (GET_MODE (x) == BLKmode)
-	{
-	  register int i;
-
-	  /* If any register in here refers to it we return true.  */
-	  for (i = XVECLEN (x, 0) - 1; i >= 0; i--)
-	    if (reg_overlap_mentioned_p (SET_DEST (XVECEXP (x, 0, i)), in))
-	      return 1;
-	  return 0;
-	}
-      break;
+      {
+	int i, n;
+
+	/* Check for a NULL entry, used to indicate that the parameter goes
+	   both on the stack and in registers.  */
+	if (XEXP (XVECEXP (x, 0, 0), 0))
+	  i = 0;
+	else
+	  i = 1;
+
+	/* If any register in here refers to it we return true.  */
+	for (n = XVECLEN (x, 0); i < n; ++i)
+	  if (reg_overlap_mentioned_p (XEXP (XVECEXP (x, 0, i), 0), in))
+	    return 1;
+	return 0;
+      }
 
     default:
       break;