* ginclude/varargs.h: Replace with stub which issues #error.

	* ginclude/stdarg.h: __builtin_stdarg_start is renamed
	__builtin_va_start.

	* builtins.def (BUILT_IN_VARARGS_START): Delete.
	(BUILT_IN_VA_START): New.
	* builtins.c (expand_builtin_va_start): Eliminate first
	argument and code to implement pre-ISO varargs.
	(std_expand_builtin_va_start): Ignore first argument; it is
	always 1.
	(expand_builtin): Handle BUILT_IN_VA_START and
	BUILT_IN_STDARG_START identically.  Delete
	BUILT_IN_VARARGS_START case.

	* function.c (assign_parms): Delete hide_last_arg and all
	its uses.
	(mark_varargs): Delete function.
	* function.h (struct function): Delete 'varargs' bit.
	(current_function_varargs): Delete macro.
	* tree.h: Don't declare mark_varargs.

	* c-decl.c (c_function_varargs, c_mark_varargs): Delete.
	(c_expand_body): Don't call mark_varargs.
	* c-objc-common.c: Handle BUILT_IN_VA_START and
	BUILT_IN_STDARG_START identically.  Delete
	BUILT_IN_VARARGS_START case.
	* c-tree.h: Don't declare c_mark_varargs.
	* c-parse.in: Remove grammar rules for '&...' (which has been
	commented out since before 2.7.2) and for '...' in K+R
	argument declarations.

	* builtins.c, function.c, integrate.c, sibcall.c,
	config/alpha/unicosmk.h, config/arc/arc.c, config/arc/arc.h,
	config/avr/avr.c, config/cris/cris.c, config/fr30/fr30.c,
	config/i960/i960.c, config/i960/i960.md, config/m32r/m32r.c,
	config/m32r/m32r.h, config/m88k/m88k.c, config/m88k/m88k.h,
	config/mips/mips.c, config/mmix/mmix.c, config/mmix/mmix.h,
	config/mn10300/mn10300.c, config/pa/som.h, config/s390/s390.c,
	config/sh/sh.c, config/sh/sh.h, config/sparc/sparc.h,
	config/stormy16/stormy16.c: Delete all references to
	current_function_varargs, and code predicated on that flag.

	* config/alpha/alpha.c (alpha_va_start),
	config/arc/arc.c (arc_va_start),
	config/i386/i386.c (ix86_va_start),
	config/mips/mips.c (mips_va_start),
	config/mn10300/mn10300.c (mn10300_va_start),
	config/rs6000/rs6000.c (rs6000_va_start),
	config/s390/s390.c (s390_va_start),
	config/sh/sh.c (sh_va_start),
	Ignore first argument; it is always 1.

	* config/c4x/c4x-protos.h, config/c4x/c4x.c: Delete c4x_va_start.
	* config/ia64/ia64-protos.h, config/ia64/ia64.c: Delete ia64_va_start.
	* config/m68hc11/m68hc11-protos.h, config/m68hc11/m68hc11.c:
	Delete m68hc11_va_start.
	* config/c4x/c4x.h, config/ia64/ia64.h, config/m68hc11/m68hc11.h:
	No need to define EXPAND_BUILTIN_VA_START.

	* doc/invoke.texi, doc/sourcebuild.texi, doc/tm.texi,
	doc/trouble.texi: Remove references to GCC-provided <varargs.h>.

testsuite:
	* c-torture/execute/991216-3.c, c-torture/execute/strct-varg-1.c,
	c-torture/execute/va-arg-7.c, c-torture/execute/va-arg-8.c,
	c-torture/execute/va-arg-15.c, c-torture/execute/va-arg-16.c,
	c-torture/execute/va-arg-17.c, c-torture/execute/va-arg-19.c:
	Convert to use <stdarg.h>.
	* c-torture/execute/va-arg-3.c, c-torture/execute/va-arg-3.x:
	Delete.
	* gcc.dg/va-arg-2.c: New.
	* lib/gcc.exp, lib/objc.exp: Remove code to set -DNO_VARARGS.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55472 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 10 deletions

diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c
index 3c200b0972d..cf1edd2ba53 100644
--- a/gcc/config/s390/s390.c
+++ b/gcc/config/s390/s390.c
@@ -3201,8 +3201,7 @@ s390_frame_info (frame)
   if (! current_function_is_leaf
       || frame->frame_size > 0
       || current_function_calls_alloca 
-      || current_function_stdarg
-      || current_function_varargs)
+      || current_function_stdarg)
     frame->frame_size += STARTING_FRAME_OFFSET;
 
   /* If we need to allocate a frame, the stack pointer is changed.  */ 
@@ -3260,7 +3259,7 @@ s390_frame_info (frame)
       frame->return_reg_saved_p = (j >= RETURN_REGNUM && i <= RETURN_REGNUM);
     }
 
-  if (current_function_stdarg || current_function_varargs)
+  if (current_function_stdarg)
     {
       /* Varargs function need to save from gpr 2 to gpr 15.  */
       frame->first_save_gpr = 2;
@@ -3435,7 +3434,7 @@ s390_emit_prologue ()
   
   /* Save fprs for variable args.  */
 
-  if (current_function_stdarg || current_function_varargs)
+  if (current_function_stdarg)
     {
       /* Save fpr 0 and 2.  */ 
 
@@ -3950,9 +3949,8 @@ s390_build_va_list ()
 }
 
 /* Implement va_start by filling the va_list structure VALIST.
-   STDARG_P is true if implementing __builtin_stdarg_va_start,
-   false if implementing __builtin_varargs_va_start.  NEXTARG
-   points to the first anonymous stack argument.
+   STDARG_P is always true, and ignored.
+   NEXTARG points to the first anonymous stack argument.
 
    The following global variables are used to initialize
    the va_list structure:
@@ -3965,7 +3963,7 @@ s390_build_va_list ()
 
 void
 s390_va_start (stdarg_p, valist, nextarg)
-     int stdarg_p;
+     int stdarg_p ATTRIBUTE_UNUSED;
      tree valist;
      rtx nextarg ATTRIBUTE_UNUSED;
 {
@@ -4003,8 +4001,6 @@ s390_va_start (stdarg_p, valist, nextarg)
 
   off = INTVAL (current_function_arg_offset_rtx);
   off = off < 0 ? 0 : off;
-  if (! stdarg_p)
-    off = off > 0 ? off - UNITS_PER_WORD : off;
   if (TARGET_DEBUG_ARG)
     fprintf (stderr, "va_start: n_gpr = %d, n_fpr = %d off %d\n",
 	     (int)n_gpr, (int)n_fpr, off);