contrib/gcc/ipa-pure-const.c

26    otherwise, the local sets will not contain information that is
91 check_decl (funct_state local,
98       local->pure_const_state = IPA_NEITHER;
106       local->pure_const_state = IPA_NEITHER;
110   /* Do not care about a local automatic that is not static.  */
118     local->pure_const_state = IPA_NEITHER;
134 	  if (local->pure_const_state == IPA_CONST)
135 	    local->pure_const_state = IPA_PURE;
145   if (local->pure_const_state == IPA_CONST)
146     local->pure_const_state = IPA_PURE;
152 check_operand (funct_state local,
158     check_decl (local, t, checking_write);
164 check_tree (funct_state local, tree t, bool checking_write)
173       local->pure_const_state = IPA_NEITHER;
182 	check_operand (local, TREE_OPERAND (t, 1), false);
190       check_tree (local, TREE_OPERAND (t, 0), false);
198 	  local->pure_const_state = IPA_NEITHER;
201       else if (local->pure_const_state == IPA_CONST)
202 	local->pure_const_state = IPA_PURE;
206     check_operand (local, t, checking_write);
212 look_for_address_of (funct_state local, tree t)
219 	  check_decl (local, x, false);
223 	  if (local->pure_const_state == IPA_CONST)
224 	    local->pure_const_state = IPA_PURE;
234 check_rhs_var (funct_state local, tree t)
236   look_for_address_of (local, t);
240       && local->pure_const_state == IPA_CONST)
241     local->pure_const_state = IPA_PURE;
243   check_tree(local, t, false);
250 check_lhs_var (funct_state local, tree t)
255       && local->pure_const_state == IPA_CONST)
256     local->pure_const_state = IPA_PURE;
258   check_tree(local, t, true);
265    or address of operations to local static variables.  STMT is the
269 get_asm_expr_operands (funct_state local, tree stmt)
286       check_lhs_var (local, TREE_VALUE (link));
296       check_rhs_var (local, TREE_VALUE (link));
302       local->pure_const_state = IPA_NEITHER;
305     local->pure_const_state = IPA_NEITHER;
316 check_call (funct_state local, tree call_expr)
330       check_rhs_var (local, argument);
341      leaves local calls which will be processed by following the call
351 	local->pure_const_state = IPA_NEITHER;
358 	    local->pure_const_state = IPA_NEITHER;
374 	  if (local->pure_const_state == IPA_CONST)
375 	    local->pure_const_state = IPA_PURE;
378 	local->pure_const_state = IPA_NEITHER;
385 	  if (local->pure_const_state == IPA_CONST)
386 	    local->pure_const_state = IPA_PURE;
405   funct_state local = get_function_state (fn);
420 	check_lhs_var (local, lhs);
431  	      check_rhs_var (local, op0);
432  	      check_rhs_var (local, op1);
438  	      check_rhs_var (local, op0);
443 	    check_rhs_var (local, rhs);
446 	    check_rhs_var (local, rhs);
452 		check_rhs_var (local, rhs);
455 		check_call (local, rhs);
471       check_rhs_var (local, t);
478 	local->pure_const_state = IPA_NEITHER;
482       check_call (local, t);
487       get_asm_expr_operands (local, t);
512   /* If this function does not return normally or does not bind local,
535       fprintf (dump_file, "\n local analysis of %s with initial value = %d\n ",
584       fprintf (dump_file, "after local analysis of %s with initial value = %d\n ",
593    on the local information that was produced by ipa_analyze_function
636   /* Propagate the local information thru the call graph to produce