combine.c (combine_simplify_rtx): Can't simplify cases that use mode class MODE_CC.

2001-11-30 Alan Matsuoka <alanm@redhat.com>

	* combine.c (combine_simplify_rtx) : Can't simplify
	cases that use mode class MODE_CC.

From-SVN: r47917

gcc/ChangeLog

+2001-11-30 Alan Matsuoka <alanm@redhat.com>
+
+	* combine.c (combine_simplify_rtx) : Can't simplify 
+	cases that use mode class MODE_CC.
+
 2001-12-11  Richard Henderson  <rth@redhat.com>
 
 	* expmed.c (expand_divmod): Ignore sdiv_pow2_cheap for modes in

gcc/combine.c

@@ -3796,6 +3796,8 @@ combine_simplify_rtx (x, op0_mode, last, in_dest)
 	  && subreg_lowpart_offset (mode, op0_mode) == SUBREG_BYTE (x))
 	return gen_lowpart_for_combine (mode, SUBREG_REG (x));
 
+      if (GET_MODE_CLASS (GET_MODE (SUBREG_REG (x))) == MODE_CC)
+        break;
       {
 	rtx temp;
 	temp = simplify_subreg (mode, SUBREG_REG (x), op0_mode,