(expand_divmod): Clear out TARGET also if OP1 is a constant,

when TARGET == OP0.

From-SVN: r7661

diff --git a/gcc/expmed.c b/gcc/expmed.c
index f828e7f..e5ff61a 100644 (file)
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -2605,7 +2605,7 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp)
         and function-inlining gets confused by this.  */
       && ((REG_P (target) && REG_FUNCTION_VALUE_P (target))
          /* Don't clobber an operand while doing a multi-step calculation.  */
-         || (rem_flag
+         || ((rem_flag || op1_is_constant)
              && (reg_mentioned_p (target, op0)
                  || (GET_CODE (op0) == MEM && GET_CODE (target) == MEM)))
          || reg_mentioned_p (target, op1)