*** empty log message ***

From-SVN: r449

diff --git a/gcc/flow.c b/gcc/flow.c
index 7a1ec3ccfeeda01e4d9d15b49a6510deebac00eb..1ee55c126f9606dbbf9166005d5b2b490f99041c 100644 (file)
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -1281,6 +1281,11 @@ propagate_block (old, first, last, final, significant, bnum)
              NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
              NOTE_SOURCE_FILE (insn) = 0;
 
+             /* CC0 is now known to be dead.  Either this insn used it,
+                in which case it doesn't anymore, or clobbered it,
+                so the next insn can't use it.  */
+             cc0_live = 0;
+
              /* If this insn is copying the return value from a library call,
                 delete the entire library call.  */
              if (libcall_is_dead)