combine.c (try_combine): If split with mode-changed scratch register didn't…

combine.c (try_combine): If split with mode-changed scratch register didn't work, try the original mode.

	* combine.c (try_combine): If split with mode-changed scratch
	register didn't work, try the original mode.

From-SVN: r40201

gcc/ChangeLog

+Sat Mar  3 04:17:17 2001  J"orn Rennecke <amylaar@redhat.com>
+
+	* combine.c (try_combine): If split with mode-changed scratch
+	register didn't work, try the original mode.
+
 Sat Mar  3 03:46:47 2001  J"orn Rennecke <amylaar@redhat.com>
 
 	* tm.texi: Change STRUCT_FORCE_BLK to MEMBER_TYPE_FORCES_BLK.

gcc/combine.c

@@ -2147,6 +2147,15 @@ try_combine (i3, i2, i1, new_direct_jump_p)
 					     gen_rtx_CLOBBER (VOIDmode,
 							      ni2dest))),
 				 i3);
+	  /* If the split with the mode-changed register didn't work, try
+	     the original register.  */
+	  if (! m_split && ni2dest != i2dest)
+	    m_split = split_insns (gen_rtx_PARALLEL
+				   (VOIDmode,
+				    gen_rtvec (2, newpat,
+					       gen_rtx_CLOBBER (VOIDmode,
+								i2dest))),
+				    i3);
 	}
 
       if (m_split && GET_CODE (m_split) != SEQUENCE)