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

From-SVN: r34512

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3324401aa66a99c9056000b8b64362b583b6ae46..523a0735ebb2456f700cad5b9417ddef99725796 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+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

diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c
index 7703d1e3289718d27d831c21acddeddfb6e90d2c..4e803ce7d4720cfab81a8bc10e3fc68436b4cbd3 100644 (file)
--- a/gcc/ifcvt.c
+++ b/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