Prevent interblock move of CC0 setter.

From-SVN: r69992

Prevent interblock move of CC0 setter.
From-SVN: r69992
caf819ae · Vladimir Makarov · Nick Clifton · 0fd4ac72 · caf819ae · caf819ae
Commit caf819ae authored Jul 31, 2003 by Vladimir Makarov Committed by Nick Clifton Jul 31, 2003
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gcc/ChangeLog
+5 -0

gcc/sched-deps.c
+3 -0

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2003-07-31  Vladimir Makarov  <vmakarov@redhat.com>
+
+        * sched-deps.c (sched_analyze_2): Prevent interblock move of CC0
+        setter.
+
 2003-07-30  Roger Sayle  <roger@eyesopen.com>

 	* builtins.def: Alphabetize.

--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -625,6 +625,9 @@ sched_analyze_2 (struct deps *deps, rtx x, rtx insn)
    case CC0:
      /* User of CC0 depends on immediately preceding insn.  */
      set_sched_group_p (insn);
+       /* Don't move CC0 setter to another block (it can set up the
+        same flag for previous CC0 users which is safe).  */
+      CANT_MOVE (prev_nonnote_insn (insn)) = 1;
      return;
 #endif