[COMMITTED] ada: Static intrinsic functions are a core language extension.

["Marc Poulhiès" <poulhies@adacore.com>]

From: Steve Baird <baird@adacore.com>

GNAT-defined Ada extensions are divided into two categories: those that are
enabled by either -gnatX or -gnatX0 and those which require -gnatX0.
Move static intrinsic functions from the second category into the first.

gcc/ada/

	* doc/gnat_rm/implementation_defined_pragmas.rst: Add the standard
	'... "On" enables this extension.' sentence to the description of
	static intrinsic functions.
	* sem_ch13.adb
	(Analyze_Aspect_Spec): In the call to Error_Msg_GNAT_Extension for
	a Static aspect specification for an intrinsic function, specify
	Is_Core_Extension => True.
	* sem_eval.adb
	(Eval_Intrinsic_Call): Test Core_Extensions_Allowed instead of
	testing All_Extensions_Allowed.
	* gnat_rm.texi: Regenerate.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/doc/gnat_rm/implementation_defined_pragmas.rst | 2 ++
 gcc/ada/gnat_rm.texi                                   | 2 ++
 gcc/ada/sem_ch13.adb                                   | 3 ++-
 gcc/ada/sem_eval.adb                                   | 5 +++--
 4 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/gcc/ada/doc/gnat_rm/implementation_defined_pragmas.rst b/gcc/ada/doc/gnat_rm/implementation_defined_pragmas.rst
index 100d79e69b1..7e5fb700691 100644
--- a/gcc/ada/doc/gnat_rm/implementation_defined_pragmas.rst
+++ b/gcc/ada/doc/gnat_rm/implementation_defined_pragmas.rst
@@ -2200,6 +2200,8 @@ are identified below.
   functions and the compiler will evaluate some of these intrinsic statically,
   in particular the ``Shift_Left`` and ``Shift_Right`` intrinsics.
 
+  An Extensions_Allowed pragma argument of "On" enables this extension.
+
 * ``[]`` aggregates
 
   This new aggregate syntax for arrays and containers is provided under -gnatX
diff --git a/gcc/ada/gnat_rm.texi b/gcc/ada/gnat_rm.texi
index 6fcaca76571..fbd8bb8d6b2 100644
--- a/gcc/ada/gnat_rm.texi
+++ b/gcc/ada/gnat_rm.texi
@@ -3639,6 +3639,8 @@ The Ada 202x @code{Static} aspect can be specified on Intrinsic imported
 functions and the compiler will evaluate some of these intrinsic statically,
 in particular the @code{Shift_Left} and @code{Shift_Right} intrinsics.
 
+An Extensions_Allowed pragma argument of “On” enables this extension.
+
 @item 
 @code{[]} aggregates
 
diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index 6f4d33b6d55..2eb1a69e764 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -2408,7 +2408,8 @@ package body Sem_Ch13 is
 
                   elsif Is_Imported_Intrinsic then
                      Error_Msg_GNAT_Extension
-                       ("aspect % on intrinsic function", Sloc (Aspect));
+                       ("aspect % on intrinsic function", Sloc (Aspect),
+                        Is_Core_Extension => True);
 
                   else
                      Error_Msg_N
diff --git a/gcc/ada/sem_eval.adb b/gcc/ada/sem_eval.adb
index 6339cfe3b04..195f27e14d6 100644
--- a/gcc/ada/sem_eval.adb
+++ b/gcc/ada/sem_eval.adb
@@ -2856,10 +2856,11 @@ package body Sem_Eval is
          return;
       end if;
 
-      --  Intrinsic calls as part of a static function is a language extension.
+      --  Intrinsic calls as part of a static function is a (core)
+      --  language extension.
 
       if Checking_Potentially_Static_Expression
-        and then not All_Extensions_Allowed
+        and then not Core_Extensions_Allowed
       then
          return;
       end if;
-- 
2.34.1