(subst_constants, case SUBREG): Cancel changes once done with result.

From-SVN: r14002

diff --git a/gcc/integrate.c b/gcc/integrate.c
index 693304ab3d1bdd0e90d1ae5702242a87d464214c..423ded2ba9990dfede6ce5a7fefeee9e8b7d8ea0 100644 (file)
--- a/gcc/integrate.c
+++ b/gcc/integrate.c
@@ -2717,6 +2717,7 @@ subst_constants (loc, insn, map)
            new = operand_subword (inner, SUBREG_WORD (x), 0,
                                   GET_MODE (SUBREG_REG (x)));
 
+         cancel_changes (num_changes);
          if (new == 0 && subreg_lowpart_p (x))
            new = gen_lowpart_common (GET_MODE (x), inner);