Remove EVAL_SKIP

EVAL_SKIP was needed in the old expression implementation due to its
linearized tree structure.  This is not needed in the new
implementation, because it is trivial to not evaluate a subexpression.
This patch removes the last vestiges of EVAL_SKIP.

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

	* value.h (eval_skip_value): Don't declare.
	* opencl-lang.c (eval_opencl_assign): Update.
	* m2-lang.c (eval_op_m2_high, eval_op_m2_subscript): Update.
	* f-lang.c (eval_op_f_abs, eval_op_f_mod, eval_op_f_ceil)
	(eval_op_f_floor, eval_op_f_modulo, eval_op_f_cmplx): Remove.
	* expression.h (enum noside) <EVAL_SKIP>: Remove.
	* expop.h (typeof_operation::evaluate)
	(decltype_operation::evaluate, unop_addr_operation::evaluate)
	(unop_sizeof_operation::evaluate, assign_operation::evaluate)
	(cxx_cast_operation::evaluate): Update.
	* eval.c (eval_skip_value): Remove.
	(eval_op_scope, eval_op_var_entry_value)
	(eval_op_func_static_var, eval_op_string, eval_op_objc_selector)
	(eval_op_concat, eval_op_ternop, eval_op_structop_struct)
	(eval_op_structop_ptr, eval_op_member, eval_op_add, eval_op_sub)
	(eval_op_binary, eval_op_subscript, eval_op_equal)
	(eval_op_notequal, eval_op_less, eval_op_gtr, eval_op_geq)
	(eval_op_leq, eval_op_repeat, eval_op_plus, eval_op_neg)
	(eval_op_complement, eval_op_lognot, eval_op_ind)
	(eval_op_memval, eval_op_preinc, eval_op_predec)
	(eval_op_postinc, eval_op_postdec, eval_op_type)
	(eval_binop_assign_modify, eval_op_objc_msgcall)
	(eval_multi_subscript, logical_and_operation::evaluate)
	(logical_or_operation::evaluate, array_operation::evaluate)
	(operation::evaluate_for_cast)
	(var_msym_value_operation::evaluate_for_cast)
	(var_value_operation::evaluate_for_cast): Update.
	* c-lang.c (c_string_operation::evaluate): Update.
	* c-exp.h (objc_nsstring_operation::evaluate)
	(objc_selector_operation::evaluate): Update.
	* ada-lang.c (ada_assign_operation::evaluate)
	(eval_ternop_in_range, ada_unop_neg, ada_unop_in_range)
	(ada_atr_size): Update.

1 files changed, 4 insertions, 15 deletions

diff --git a/gdb/expop.h b/gdb/expop.h
index a719b0d1edb..c12a55e8db3 100644
--- a/gdb/expop.h
+++ b/gdb/expop.h
@@ -1581,9 +1581,7 @@ public:
 		   struct expression *exp,
 		   enum noside noside) override
   {
-    if (noside == EVAL_SKIP)
-      return eval_skip_value (exp);
-    else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+    if (noside == EVAL_AVOID_SIDE_EFFECTS)
       return std::get<0> (m_storage)->evaluate (nullptr, exp,
 						EVAL_AVOID_SIDE_EFFECTS);
     else
@@ -1606,9 +1604,7 @@ public:
 		   struct expression *exp,
 		   enum noside noside) override
   {
-    if (noside == EVAL_SKIP)
-      return eval_skip_value (exp);
-    else if (noside == EVAL_AVOID_SIDE_EFFECTS)
+    if (noside == EVAL_AVOID_SIDE_EFFECTS)
       {
 	value *result
 	  = std::get<0> (m_storage)->evaluate (nullptr, exp,
@@ -1683,10 +1679,7 @@ public:
 		   enum noside noside) override
   {
     /* C++: check for and handle pointer to members.  */
-    if (noside == EVAL_SKIP)
-      return eval_skip_value (exp);
-    else
-      return std::get<0> (m_storage)->evaluate_for_address (exp, noside);
+    return std::get<0> (m_storage)->evaluate_for_address (exp, noside);
   }
 
   enum exp_opcode opcode () const override
@@ -1724,8 +1717,6 @@ public:
 		   struct expression *exp,
 		   enum noside noside) override
   {
-    if (noside == EVAL_SKIP)
-      return eval_skip_value (exp);
     return std::get<0> (m_storage)->evaluate_for_sizeof (exp, noside);
   }
 
@@ -1908,7 +1899,7 @@ public:
 			  : value_type (lhs));
     value *rhs = std::get<1> (m_storage)->evaluate (xtype, exp, noside);
 
-    if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
+    if (noside == EVAL_AVOID_SIDE_EFFECTS)
       return lhs;
     if (binop_user_defined_p (BINOP_ASSIGN, lhs, rhs))
       return value_x_binop (lhs, rhs, BINOP_ASSIGN, OP_NULL, noside);
@@ -2049,8 +2040,6 @@ public:
 						    EVAL_AVOID_SIDE_EFFECTS);
     struct type *type = value_type (val);
     value *rhs = std::get<1> (m_storage)->evaluate (type, exp, noside);
-    if (noside == EVAL_SKIP)
-      return eval_skip_value (exp);
     return FUNC (type, rhs);
   }