* tree-sra.c (decide_block_copy): Decide if there are groups.

[pf3gnuchains/gcc-fork.git] / gcc / dse.c

diff --git a/gcc/dse.c b/gcc/dse.c
index 1aa1598..7a7afd7 100644 (file)
--- a/gcc/dse.c
+++ b/gcc/dse.c
@@ -1407,7 +1407,7 @@ find_shift_sequence (rtx read_reg,
      justify the value we want to read but is available in one insn on
      the machine.  */
 
-  for (; access_size <= UNITS_PER_WORD; access_size *= 2)
+  for (; access_size < UNITS_PER_WORD; access_size *= 2)
     {
       rtx target, new_reg;
       enum machine_mode new_mode;
@@ -1428,10 +1428,8 @@ find_shift_sequence (rtx read_reg,
       /* In theory we could also check for an ashr.  Ian Taylor knows
         of one dsp where the cost of these two was not the same.  But
         this really is a rare case anyway.  */
-      df_set_flags (DF_NO_INSN_RESCAN);
       target = expand_binop (new_mode, lshr_optab, new_reg,
                             GEN_INT (shift), new_reg, 1, OPTAB_DIRECT);
-      df_clear_flags (DF_NO_INSN_RESCAN);
 
       if (target == new_reg)
        {