(expand_expr, case MAX_EXPR): Don't use TARGET directly if it is a

volatile MEM.

From-SVN: r5681

diff --git a/gcc/expr.c b/gcc/expr.c
index 0d01325..de2d0e9 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5022,6 +5022,7 @@ expand_expr (exp, target, tmode, modifier)
     case MIN_EXPR:
       target = original_target;
       if (target == 0 || ! safe_from_p (target, TREE_OPERAND (exp, 1))
+         || (GET_CODE (target) == MEM && MEM_VOLATILE_P (target))
          || (GET_CODE (target) == REG
              && REGNO (target) < FIRST_PSEUDO_REGISTER))
        target = gen_reg_rtx (mode);