PR 84519 Handle optional QUIET specifier for STOP and ERROR STOP

Fortran 2018 adds a new QUIET specifier for the STOP and ERROR STOP
statements, in order to suppress the printing of signaling FP
exceptions and the stop code. This patch adds the necessary library
changes, but for now the new specifier is not parsed and the frontend
unconditionally adds a false value for the new argument.

Regtested on x86_64-pc-linux-gnu.

gcc/fortran/ChangeLog:

2018-02-23  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/84519
	* trans-decl.c (gfc_build_builtin_function_decls): Add bool
	argument to stop and error stop decls.
	* trans-stmt.c (gfc_trans_stop): Add false value to argument
	lists.

libgfortran/ChangeLog:

2018-02-23  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/84519
	* caf/libcaf.h (_gfortran_caf_stop_numeric): Add bool argument.
	(_gfortran_caf_stop_str): Likewise.
	(_gfortran_caf_error_stop_str): Likewise.
	(_gfortran_caf_error_stop): Likewise.
	* caf/mpi.c (_gfortran_caf_error_stop_str): Handle new argument.
	(_gfortran_caf_error_stop): Likewise.
	* caf/single.c (_gfortran_caf_stop_numeric): Likewise.
	(_gfortran_caf_stop_str): Likewise.
	(_gfortran_caf_error_stop_str): Likewise.
	(_gfortran_caf_error_stop): Likewise.
	(_gfortran_caf_lock): Likewise.
	(_gfortran_caf_unlock): Likewise.
	* libgfortran.h (stop_string): Add bool argument.
	* runtime/pause.c (do_pause): Add false argument.
	* runtime/stop.c (stop_numeric): Handle new argument.
	(stop_string): Likewise.
	(error_stop_string): Likewise.
	(error_stop_numeric): Likewise.

From-SVN: r257928

3 files changed, 22 insertions, 9 deletions

diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index c4cc447..3b56c37 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,11 @@
+2018-02-23  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	PR fortran/84519
+	* trans-decl.c (gfc_build_builtin_function_decls): Add bool
+	argument to stop and error stop decls.
+	* trans-stmt.c (gfc_trans_stop): Add false value to argument
+	lists.
+
 2018-02-22  Janne Blomqvist  <jb@gcc.gnu.org>
 
 	PR 78534
diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c
index e8c10d4..c233a0e 100644
--- a/gcc/fortran/trans-decl.c
+++ b/gcc/fortran/trans-decl.c
@@ -3503,25 +3503,27 @@ gfc_build_builtin_function_decls (void)
 
   gfor_fndecl_stop_numeric = gfc_build_library_function_decl (
 	get_identifier (PREFIX("stop_numeric")),
-	void_type_node, 1, integer_type_node);
+	void_type_node, 2, integer_type_node, boolean_type_node);
   /* STOP doesn't return.  */
   TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1;
 
   gfor_fndecl_stop_string = gfc_build_library_function_decl_with_spec (
 	get_identifier (PREFIX("stop_string")), ".R.",
-	void_type_node, 2, pchar_type_node, size_type_node);
+	void_type_node, 3, pchar_type_node, size_type_node,
+	boolean_type_node);
   /* STOP doesn't return.  */
   TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1;
 
   gfor_fndecl_error_stop_numeric = gfc_build_library_function_decl (
         get_identifier (PREFIX("error_stop_numeric")),
-        void_type_node, 1, integer_type_node);
+        void_type_node, 2, integer_type_node, boolean_type_node);
   /* ERROR STOP doesn't return.  */
   TREE_THIS_VOLATILE (gfor_fndecl_error_stop_numeric) = 1;
 
   gfor_fndecl_error_stop_string = gfc_build_library_function_decl_with_spec (
 	get_identifier (PREFIX("error_stop_string")), ".R.",
-	void_type_node, 2, pchar_type_node, size_type_node);
+	void_type_node, 3, pchar_type_node, size_type_node,
+	boolean_type_node);
   /* ERROR STOP doesn't return.  */
   TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1;
 
diff --git a/gcc/fortran/trans-stmt.c b/gcc/fortran/trans-stmt.c
index f1fe8a0..cf76fd0 100644
--- a/gcc/fortran/trans-stmt.c
+++ b/gcc/fortran/trans-stmt.c
@@ -642,7 +642,8 @@ gfc_trans_stop (gfc_code *code, bool error_stop)
 				 : (flag_coarray == GFC_FCOARRAY_LIB
 				    ? gfor_fndecl_caf_stop_str
 				    : gfor_fndecl_stop_string),
-				 2, build_int_cst (pchar_type_node, 0), tmp);
+				 3, build_int_cst (pchar_type_node, 0), tmp,
+				 boolean_false_node);
     }
   else if (code->expr1->ts.type == BT_INTEGER)
     {
@@ -654,8 +655,9 @@ gfc_trans_stop (gfc_code *code, bool error_stop)
 				    : gfor_fndecl_error_stop_numeric)
 				 : (flag_coarray == GFC_FCOARRAY_LIB
 				    ? gfor_fndecl_caf_stop_numeric
-				    : gfor_fndecl_stop_numeric), 1,
-				 fold_convert (integer_type_node, se.expr));
+				    : gfor_fndecl_stop_numeric), 2,
+				 fold_convert (integer_type_node, se.expr),
+				 boolean_false_node);
     }
   else
     {
@@ -668,8 +670,9 @@ gfc_trans_stop (gfc_code *code, bool error_stop)
 				 : (flag_coarray == GFC_FCOARRAY_LIB
 				    ? gfor_fndecl_caf_stop_str
 				    : gfor_fndecl_stop_string),
-				 2, se.expr, fold_convert (size_type_node,
-							   se.string_length));
+				 3, se.expr, fold_convert (size_type_node,
+							   se.string_length),
+				 boolean_false_node);
     }
 
   gfc_add_expr_to_block (&se.pre, tmp);