Do not handle dead code via conditional execution if special handling is needed

From-SVN: r34512

gcc/ChangeLog

+2000-06-12  Michael Meissner  <meissner@redhat.com>
+
+	* ifcvt.c (dead_or_predicable): Don't do conditional execution
+	path if the machine needs extra support to do conditional
+	execution.
+
 Mon Jun 12 17:04:17 2000  Jeffrey A Law  (law@cygnus.com)
 
 	* print-rtl.c (print_rtx, case MEM): Use HOST_WIDE_INT_PRINT_DEC

gcc/ifcvt.c

@@ -1865,6 +1865,9 @@ dead_or_predicable (test_bb, merge_bb, other_bb, new_dest, reversep)
       end = PREV_INSN (end);
     }
 
+  /* Disable handling dead code by conditional execution if the machine needs
+     to do anything funny with the tests, etc.  */
+#ifndef IFCVT_MODIFY_TESTS
   if (HAVE_conditional_execution)
     {
       /* In the conditional execution case, we have things easy.  We know
@@ -1896,6 +1899,7 @@ dead_or_predicable (test_bb, merge_bb, other_bb, new_dest, reversep)
       earliest = jump;
     }
   else
+#endif
     {
       /* In the non-conditional execution case, we have to verify that there
 	 are no trapping operations, no calls, no references to memory, and