re PR fortran/54833 (Don't wrap __builtin_free(a) in if (a != NULL))

	PR fortran/54833
	* trans.c (gfc_call_free): Don't check if pointer is NULL.
	* trans.h (gfc_call_free): Adjust comment.

From-SVN: r227336

gcc/fortran/ChangeLog

+2015-08-31  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
+
+	PR fortran/54833
+	* trans.c (gfc_call_free): Don't check if pointer is NULL.
+	* trans.h (gfc_call_free): Adjust comment.
+
 2015-08-29  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	* trans.c (gfc_call_malloc, gfc_allocate_using_malloc,

gcc/fortran/trans.c

@@ -850,23 +850,14 @@ gfc_allocate_allocatable (stmtblock_t * block, tree mem, tree size, tree token,
 }
 
 
-/* Free a given variable, if it's not NULL.  */
+/* Free a given variable.  */
 
 tree
 gfc_call_free (tree var)
 {
-  tree cond, call;
-
-  /* Only evaluate the variable once.  */
-  var = save_expr (fold_convert (pvoid_type_node, var));
-
-  cond = fold_build2_loc (input_location, NE_EXPR, boolean_type_node, var,
-			  build_int_cst (pvoid_type_node, 0));
-  call = build_call_expr_loc (input_location,
+  return build_call_expr_loc (input_location,
 			      builtin_decl_explicit (BUILT_IN_FREE),
-			      1, var);
-  return fold_build3_loc (input_location, COND_EXPR, void_type_node,
-			  cond, call, build_empty_stmt (input_location));
+			      1, fold_convert (pvoid_type_node, var));
 }
 
 

gcc/fortran/trans.h

@@ -642,7 +642,7 @@ void gfc_trans_runtime_check (bool, bool, tree, stmtblock_t *, locus *,
 void gfc_trans_same_strlen_check (const char*, locus*, tree, tree,
 				  stmtblock_t*);
 
-/* Generate a call to free() after checking that its arg is non-NULL.  */
+/* Generate a call to free().  */
 tree gfc_call_free (tree);
 
 /* Allocate memory after performing a few checks.  */