Introduce assign_modify_operation

This adds class assign_modify_operation, which implements
BINOP_ASSIGN_MODIFY.

gdb/ChangeLog
2021-03-08  Tom Tromey  <tom@tromey.com>

	* expop.h (class assign_modify_operation): New.
	* eval.c (eval_binop_assign_modify): No longer static.
	* ax-gdb.c (assign_modify_operation::do_generate_ax): New method.

1 files changed, 1 insertions, 1 deletions

diff --git a/gdb/eval.c b/gdb/eval.c
index f0bad85..4a76135 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -2074,7 +2074,7 @@ eval_op_type (struct type *expect_type, struct expression *exp,
 
 /* A helper function for BINOP_ASSIGN_MODIFY.  */
 
-static struct value *
+struct value *
 eval_binop_assign_modify (struct type *expect_type, struct expression *exp,
 			  enum noside noside, enum exp_opcode op,
 			  struct value *arg1, struct value *arg2)