re PR ada/70017 (c52103x and c52104x test failure on s390x)

	PR ada/70017
	* calls.c (emit_library_call_value_1): Clear the ECF_NOTHROW flag if
	the libcall is LCT_THROW.
	* explow.c (probe_stack_range): Pass LCT_THROW to emit_library_call
	for the checking routine.

From-SVN: r234160

gcc/ChangeLog

+2016-03-12  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR ada/70017
+	* calls.c (emit_library_call_value_1): Clear the ECF_NOTHROW flag if
+	the libcall is LCT_THROW.
+	* explow.c (probe_stack_range): Pass LCT_THROW to emit_library_call
+	for the checking routine.
+
 2016-03-11  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
 	PR target/70131

gcc/calls.c

@@ -3852,7 +3852,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
   reg_parm_stack_space = REG_PARM_STACK_SPACE ((tree) 0);
 #endif
 
-  /* By default, library functions can not throw.  */
+  /* By default, library functions cannot throw.  */
   flags = ECF_NOTHROW;
 
   switch (fn_type)
@@ -3869,7 +3869,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
       flags |= ECF_NORETURN;
       break;
     case LCT_THROW:
-      flags = ECF_NORETURN;
+      flags &= ~ECF_NOTHROW;
       break;
     case LCT_RETURNS_TWICE:
       flags = ECF_RETURNS_TWICE;

gcc/explow.c

@@ -1566,7 +1566,7 @@ probe_stack_range (HOST_WIDE_INT first, rtx size)
 					         stack_pointer_rtx,
 					         plus_constant (Pmode,
 								size, first)));
-      emit_library_call (stack_check_libfunc, LCT_NORMAL, VOIDmode, 1, addr,
+      emit_library_call (stack_check_libfunc, LCT_THROW, VOIDmode, 1, addr,
 			 Pmode);
     }