varargs.h: Replace with stub which issues #error.

	* 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.

From-SVN: r55472

2 files changed, 5 insertions, 19 deletions

diff --git a/gcc/config/i960/i960.c b/gcc/config/i960/i960.c
index 85893de..fab5f58 100644
--- a/gcc/config/i960/i960.c
+++ b/gcc/config/i960/i960.c
@@ -85,9 +85,9 @@ static int ret_label = 0;
    This is used to help identify functions that use an argument block.  */
 
 #define VARARGS_STDARG_FUNCTION(FNDECL)	\
-((TYPE_ARG_TYPES (TREE_TYPE (FNDECL)) != 0						      \
-  && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (TREE_TYPE (FNDECL)))) != void_type_node))    \
- || current_function_varargs)
+(TYPE_ARG_TYPES (TREE_TYPE (FNDECL)) != 0				\
+  && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (TREE_TYPE (FNDECL)))))	\
+      != void_type_node)
 
 /* Initialize the GCC target structure.  */
 #undef TARGET_ASM_ALIGNED_SI_OP
@@ -518,7 +518,7 @@ emit_move_sequence (operands, mode)
   
   if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) != REG
       && (operands[1] != const0_rtx || current_function_args_size
-	  || current_function_varargs || current_function_stdarg
+	  || current_function_stdarg
 	  || rtx_equal_function_value_matters))
     /* Here we use the same test as movsi+1 pattern -- see i960.md.  */
     operands[1] = force_reg (mode, operands[1]);
diff --git a/gcc/config/i960/i960.md b/gcc/config/i960/i960.md
index 5755598..91fb78b 100644
--- a/gcc/config/i960/i960.md
+++ b/gcc/config/i960/i960.md
@@ -594,7 +594,7 @@
 ;; the calling convention is defined so that the arg pointer when it is not
 ;; overwise being used is zero.  Thus, we can handle store zero to memory
 ;; by storing an unused arg pointer.  The arg pointer will be unused if
-;; current_function_args_size is zero and this is not a stdarg/varargs
+;; current_function_args_size is zero and this is not a stdarg
 ;; function.  This value of the former variable is not valid until after
 ;; all rtl generation is complete, including function inlining (because a
 ;; function that doesn't need an arg pointer may be inlined into a function
@@ -605,7 +605,6 @@
   [(set (match_operand:SI 0 "general_operand" "=d,d,d,m")
 	(match_operand:SI 1 "general_operand" "dI,i,m,dJ"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], SImode)
@@ -643,7 +642,6 @@
   [(set (match_operand:SI 0 "general_operand" "=d,d,d,m")
 	(match_operand:SI 1 "general_operand" "dI,i,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], SImode)
@@ -692,7 +690,6 @@
   [(set (match_operand:HI 0 "general_operand" "=d,d,d,m")
 	(match_operand:HI 1 "general_operand" "dI,i,m,dJ"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], HImode)
@@ -731,7 +728,6 @@
   [(set (match_operand:HI 0 "general_operand" "=d,d,d,m")
 	(match_operand:HI 1 "general_operand" "dI,i,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], HImode)
@@ -777,7 +773,6 @@
   [(set (match_operand:QI 0 "general_operand" "=d,d,d,m")
 	(match_operand:QI 1 "general_operand" "dI,i,m,dJ"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], QImode)
@@ -816,7 +811,6 @@
   [(set (match_operand:QI 0 "general_operand" "=d,d,d,m")
 	(match_operand:QI 1 "general_operand" "dI,i,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], QImode)
@@ -862,7 +856,6 @@
   [(set (match_operand:DI 0 "general_operand" "=d,d,d,d,m,o")
 	(match_operand:DI 1 "general_operand" "d,I,i,m,d,J"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], DImode)
@@ -892,7 +885,6 @@
   [(set (match_operand:DI 0 "general_operand" "=d,d,d,d,m")
 	(match_operand:DI 1 "general_operand" "d,I,i,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], DImode)
@@ -945,7 +937,6 @@
   [(set (match_operand:TI 0 "general_operand" "=d,d,d,d,m,o")
 	(match_operand:TI 1 "general_operand" "d,I,i,m,d,J"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], TImode)
@@ -975,7 +966,6 @@
   [(set (match_operand:TI 0 "general_operand" "=d,d,d,d,m")
 	(match_operand:TI 1 "general_operand" "d,I,i,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], TImode)
@@ -1079,7 +1069,6 @@
   [(set (match_operand:DF 0 "general_operand" "=r,*f,d,d,m,o")
 	(match_operand:DF 1 "fpmove_src_operand" "r,GH,F,m,d,G"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], DFmode)
@@ -1115,7 +1104,6 @@
   [(set (match_operand:DF 0 "general_operand" "=r,*f,d,d,m")
 	(match_operand:DF 1 "fpmove_src_operand" "r,GH,F,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], DFmode)
@@ -1157,7 +1145,6 @@
   [(set (match_operand:SF 0 "general_operand" "=r,*f,d,d,m")
 	(match_operand:SF 1 "fpmove_src_operand" "r,GH,F,m,dG"))]
   "(current_function_args_size == 0
-    && current_function_varargs == 0
     && current_function_stdarg == 0
     && rtx_equal_function_value_matters == 0)
    && (register_operand (operands[0], SFmode)
@@ -1192,7 +1179,6 @@
   [(set (match_operand:SF 0 "general_operand" "=r,*f,d,d,m")
 	(match_operand:SF 1 "fpmove_src_operand" "r,GH,F,m,d"))]
   "(current_function_args_size != 0
-    || current_function_varargs != 0
     || current_function_stdarg != 0
     || rtx_equal_function_value_matters != 0)
    && (register_operand (operands[0], SFmode)