re PR target/52503 (sh-wrs-vxworks: too many target masks)

	PR target/52503
	* config/sh/sh.opt (msoft-atomic): Use Var instead of Mask.
	* config/sh/linux.h (TARGET_DEFAULT): Remove MASK_SOFT_ATOMIC.
	(SUBTARGET_OVERRIDE_OPTIONS): Define.


Co-Authored-By: Kaz Kojima <kkojima@gcc.gnu.org>

From-SVN: r185081

gcc/ChangeLog

+2012-03-07  Oleg Endo  <olegendo@gcc.gnu.org>
+	    Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	PR target/52503
+	* config/sh/sh.opt (msoft-atomic): Use Var instead of Mask.
+	* config/sh/linux.h (TARGET_DEFAULT): Remove MASK_SOFT_ATOMIC.
+	(SUBTARGET_OVERRIDE_OPTIONS): Define.
+
 2012-03-07  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/predicates.md (x86_64_zext_general_operand): New.

gcc/config/sh/linux.h

 /* Definitions for SH running Linux-based GNU systems using ELF
-   Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2010, 2011
+   Copyright (C) 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2010, 2011,
+   2012
    Free Software Foundation, Inc.
    Contributed by Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
 
@@ -41,7 +42,7 @@ along with GCC; see the file COPYING3.  If not see
 #undef TARGET_DEFAULT
 #define TARGET_DEFAULT \
   (TARGET_CPU_DEFAULT | MASK_USERMODE | TARGET_ENDIAN_DEFAULT \
-   | TARGET_OPT_DEFAULT | MASK_SOFT_ATOMIC)
+   | TARGET_OPT_DEFAULT)
 
 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
 
@@ -135,3 +136,13 @@ along with GCC; see the file COPYING3.  If not see
 /* Install the __sync libcalls.  */
 #undef TARGET_INIT_LIBFUNCS
 #define TARGET_INIT_LIBFUNCS  sh_init_sync_libfuncs
+
+#undef SUBTARGET_OVERRIDE_OPTIONS
+#define SUBTARGET_OVERRIDE_OPTIONS			\
+  do							\
+    {							\
+      /* Defaulting to -msoft-atomic.  */		\
+      if (global_options_set.x_TARGET_SOFT_ATOMIC == 0)	\
+	TARGET_SOFT_ATOMIC = 1;				\
+    }							\
+  while (0)

gcc/config/sh/sh.opt

@@ -320,7 +320,7 @@ Target Mask(HITACHI) MaskExists
 Follow Renesas (formerly Hitachi) / SuperH calling conventions
 
 msoft-atomic
-Target Report Mask(SOFT_ATOMIC)
+Target Report Var(TARGET_SOFT_ATOMIC)
 Use software atomic sequences supported by kernel
 
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