Re: [PATCH] remove useless unused attributes in i386 code

[Trevor Saunders <tsaunders at mozilla dot com>]

On Mon, Jul 07, 2014 at 09:28:55PM +0200, Richard Biener wrote:
> On July 7, 2014 9:06:17 PM CEST, Trevor Saunders <tsaunders@mozilla.com> wrote:
> >On Mon, Jul 07, 2014 at 11:46:27AM +0200, Richard Biener wrote:
> >> On Mon, Jul 7, 2014 at 11:45 AM, Richard Biene
> >> <richard.guenther@gmail.com> wrote:
> >> > On Thu, Jul 3, 2014 at 1:08 AM,  <tsaunders@mozilla.com> wrote:
> >> >> From: Trevor Saunders <tsaunders@mozilla.com>
> >> >>
> >> >> Hi,
> >> >>
> >> >> So apparently its not entirely obvious to everyone that removing
> >the names of
> >> >> unused arguments is the best way of dealing with warnings about
> >unused
> >> >> arguments in places like hooks where the argument is required for
> >some reason.
> >> >> Apparently this is somewhat less contravercial when the names are
> >removed
> >> >> consistantly throughout a section of code, so this patch does that
> >for
> >> >> config/i386/
> >> >>
> >> >> It should suprise nobody that there was a couple cases where the
> >argument was
> >> >> used, but still marked attribute unused.
> >> >>
> >> >> bootstrapped and regtested on x86_64-unknown-linux-gnu, with no
> >regressions,
> >> >> and a --target=i386-mingw32 run of make all-gcc completes without
> >any unused
> >> >> warnings. ok for trunk?
> >> >
> >> > Ok.  Note that marked arguments but having uses is common for
> >> > uses only in #if regions - so you might want to double-check for
> >that
> >> > case.
> >> 
> >> Oh, and the proper way to annotate unused parameters is via
> >> type ARG_UNUSED (name) because some G++ versions do not
> >> like the unused attributes.
> >
> >Do you mean some g++ version warn about things like
> >void
> >foo (int)
> >{
> >}
> >? that seems kind of crazy if so can we just suppress unused-parameter
> >with those versions?
> 
> No, some complain about the attribute unused variant.

but just to be clear changing from
void
foo(int ATTRIBUTE_UNUSED x)
to
void
foo (int)
is ok?

Trev

> 
> Richard.
> 
> >Trev
> >
> >> 
> >> Richard.
> >> 
> >> > Thanks,
> >> > Richard.
> >> >
> >> >> Trev
> >> >>
> >> >> gcc/
> >> >>
> >> >>         * config/i386/driver-i386.c: Remove names of unused
> >arguments and
> >> >>         unnecessary unused attributes.
> >> >>         * config/i386/host-mingw32.c: Likewise.
> >> >>         * config/i386/i386.c: Likewise.
> >> >>         * config/i386/winnt-stubs.c: Likewise.
> >> >>         * config/i386/winnt.c: Likewise.
> >> >>
> >> >> diff --git a/gcc/config/i386/driver-i386.c
> >b/gcc/config/i386/driver-i386.c
> >> >> index 4cd0b3d..1c6385f 100644
> >> >> --- a/gcc/config/i386/driver-i386.c
> >> >> +++ b/gcc/config/i386/driver-i386.c
> >> >> @@ -920,8 +920,7 @@ done:
> >> >>     -march and -mtune "native" target and will leave to the newly
> >> >>     built compiler to generate code for its default target.  */
> >> >>
> >> >> -const char *host_detect_local_cpu (int argc ATTRIBUTE_UNUSED,
> >> >> -                                  const char **argv
> >ATTRIBUTE_UNUSED)
> >> >> +const char *host_detect_local_cpu (int, const char **)
> >> >>  {
> >> >>    return NULL;
> >> >>  }
> >> >> diff --git a/gcc/config/i386/host-mingw32.c
> >b/gcc/config/i386/host-mingw32.c
> >> >> index fc01ceb..c71d25d 100644
> >> >> --- a/gcc/config/i386/host-mingw32.c
> >> >> +++ b/gcc/config/i386/host-mingw32.c
> >> >> @@ -83,7 +83,7 @@ mingw32_gt_pch_alloc_granularity (void)
> >> >>     open file descriptor if the host would like to probe with
> >mmap.  */
> >> >>
> >> >>  static void *
> >> >> -mingw32_gt_pch_get_address (size_t size, int fd 
> >ATTRIBUTE_UNUSED)
> >> >> +mingw32_gt_pch_get_address (size_t size, int)
> >> >>  {
> >> >>    void* res;
> >> >>    size = (size + va_granularity - 1) & ~(va_granularity - 1);
> >> >> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
> >> >> index 8046c67..01d3f2c 100644
> >> >> --- a/gcc/config/i386/i386.c
> >> >> +++ b/gcc/config/i386/i386.c
> >> >> @@ -5226,9 +5226,8 @@ x86_elf_aligned_common (FILE *file,
> >> >>     ASM_OUTPUT_ALIGNED_BSS.  */
> >> >>
> >> >>  void
> >> >> -x86_output_aligned_bss (FILE *file, tree decl ATTRIBUTE_UNUSED,
> >> >> -                       const char *name, unsigned HOST_WIDE_INT
> >size,
> >> >> -                       int align)
> >> >> +x86_output_aligned_bss (FILE *file, tree decl, const char *name,
> >> >> +                       unsigned HOST_WIDE_INT size, int align)
> >> >>  {
> >> >>    if ((ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_MEDIUM_PIC)
> >> >>        && size > (unsigned int)ix86_section_threshold)
> >> >> @@ -5358,7 +5357,7 @@ ix86_function_ok_for_sibcall (tree decl,
> >tree exp)
> >> >>  static tree
> >> >>  ix86_handle_cconv_attribute (tree *node, tree name,
> >> >>                                    tree args,
> >> >> -                                  int flags ATTRIBUTE_UNUSED,
> >> >> +                                  int,
> >> >>                                    bool *no_add_attrs)
> >> >>  {
> >> >>    if (TREE_CODE (*node) != FUNCTION_TYPE
> >> >> @@ -5502,8 +5501,7 @@ ix86_handle_cconv_attribute (tree *node,
> >tree name,
> >> >>     attributes that we expect elsewhere.  */
> >> >>
> >> >>  static tree
> >> >> -ix86_handle_tm_regparm_attribute (tree *node, tree name
> >ATTRIBUTE_UNUSED,
> >> >> -                                 tree args ATTRIBUTE_UNUSED,
> >> >> +ix86_handle_tm_regparm_attribute (tree *node, tree, tree,
> >> >>                                   int flags, bool *no_add_attrs)
> >> >>  {
> >> >>    tree alt;
> >> >> @@ -7542,7 +7540,7 @@ ix86_function_arg (cumulative_args_t cum_v,
> >enum machine_mode omode,
> >> >>
> >> >>  static bool
> >> >>  ix86_pass_by_reference (cumulative_args_t cum_v, enum
> >machine_mode mode,
> >> >> -                       const_tree type, bool named
> >ATTRIBUTE_UNUSED)
> >> >> +                       const_tree type, bool)
> >> >>  {
> >> >>    CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
> >> >>
> >> >> @@ -7971,8 +7969,7 @@ ix86_function_value_1 (const_tree valtype,
> >const_tree fntype_or_decl,
> >> >>  }
> >> >>
> >> >>  static rtx
> >> >> -ix86_function_value (const_tree valtype, const_tree
> >fntype_or_decl,
> >> >> -                    bool outgoing ATTRIBUTE_UNUSED)
> >> >> +ix86_function_value (const_tree valtype, const_tree
> >fntype_or_decl, bool)
> >> >>  {
> >> >>    enum machine_mode mode, orig_mode;
> >> >>
> >> >> @@ -8019,7 +8016,7 @@ ix86_libcall_value (enum machine_mode mode)
> >> >>  /* Return true iff type is returned in memory.  */
> >> >>
> >> >>  static bool
> >> >> -ix86_return_in_memory (const_tree type, const_tree fntype
> >ATTRIBUTE_UNUSED)
> >> >> +ix86_return_in_memory (const_tree type, const_tree fntype)
> >> >>  {
> >> >>  #ifdef SUBTARGET_RETURN_IN_MEMORY
> >> >>    return SUBTARGET_RETURN_IN_MEMORY (type, fntype);
> >> >> @@ -8313,8 +8310,7 @@ setup_incoming_varargs_ms_64
> >(CUMULATIVE_ARGS *cum)
> >> >>
> >> >>  static void
> >> >>  ix86_setup_incoming_varargs (cumulative_args_t cum_v, enum
> >machine_mode mode,
> >> >> -                            tree type, int *pretend_size
> >ATTRIBUTE_UNUSED,
> >> >> -                            int no_rtl)
> >> >> +                            tree type, int *, int no_rtl)
> >> >>  {
> >> >>    CUMULATIVE_ARGS *cum = get_cumulative_args (cum_v);
> >> >>    CUMULATIVE_ARGS next_cum;
> >> >> @@ -11765,8 +11761,7 @@ ix86_expand_epilogue (int style)
> >> >>  /* Reset from the function's potential modifications.  */
> >> >>
> >> >>  static void
> >> >> -ix86_output_function_epilogue (FILE *file ATTRIBUTE_UNUSED,
> >> >> -                              HOST_WIDE_INT size
> >ATTRIBUTE_UNUSED)
> >> >> +ix86_output_function_epilogue (FILE *file ATTRIBUTE_UNUSED,
> >HOST_WIDE_INT)
> >> >>  {
> >> >>    if (pic_offset_table_rtx)
> >> >>      SET_REGNO (pic_offset_table_rtx,
> >REAL_PIC_OFFSET_TABLE_REGNUM);
> >> >> @@ -12388,9 +12383,7 @@ ix86_decompose_address (rtx addr, struct
> >ix86_address *out)
> >> >>     requires to two regs - that would mean more pseudos with
> >longer
> >> >>     lifetimes.  */
> >> >>  static int
> >> >> -ix86_address_cost (rtx x, enum machine_mode mode
> >ATTRIBUTE_UNUSED,
> >> >> -                  addr_space_t as ATTRIBUTE_UNUSED,
> >> >> -                  bool speed ATTRIBUTE_UNUSED)
> >> >> +ix86_address_cost (rtx x, enum machine_mode, addr_space_t, bool)
> >> >>  {
> >> >>    struct ix86_address parts;
> >> >>    int cost = 1;
> >> >> @@ -12457,7 +12450,7 @@ darwin_local_data_pic (rtx disp)
> >> >>     satisfies CONSTANT_P.  */
> >> >>
> >> >>  static bool
> >> >> -ix86_legitimate_constant_p (enum machine_mode mode
> >ATTRIBUTE_UNUSED, rtx x)
> >> >> +ix86_legitimate_constant_p (enum machine_mode, rtx x)
> >> >>  {
> >> >>    switch (GET_CODE (x))
> >> >>      {
> >> >> @@ -12782,10 +12775,8 @@ legitimate_pic_address_disp_p (rtx disp)
> >> >>     0 if it should not.  */
> >> >>
> >> >>  bool
> >> >> -ix86_legitimize_reload_address (rtx x,
> >> >> -                               enum machine_mode mode
> >ATTRIBUTE_UNUSED,
> >> >> -                               int opnum, int type,
> >> >> -                               int ind_levels ATTRIBUTE_UNUSED)
> >> >> +ix86_legitimize_reload_address (rtx x, enum machine_mode, int
> >opnum, int type,
> >> >> +                               int)
> >> >>  {
> >> >>    /* Reload can generate:
> >> >>
> >> >> @@ -12882,8 +12873,7 @@ ix86_validate_address_register (rtx op)
> >> >>     be recognized.  */
> >> >>
> >> >>  static bool
> >> >> -ix86_legitimate_address_p (enum machine_mode mode
> >ATTRIBUTE_UNUSED,
> >> >> -                          rtx addr, bool strict)
> >> >> +ix86_legitimate_address_p (enum machine_mode, rtx addr, bool
> >strict)
> >> >>  {
> >> >>    struct ix86_address parts;
> >> >>    rtx base, index, disp;
> >> >> @@ -13823,8 +13813,7 @@ legitimize_pe_coff_symbol (rtx addr, bool
> >inreg)
> >> >>     See comments by legitimize_pic_address in i386.c for details. 
> >*/
> >> >>
> >> >>  static rtx
> >> >> -ix86_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
> >> >> -                        enum machine_mode mode)
> >> >> +ix86_legitimize_address (rtx x, rtx, enum machine_mode mode)
> >> >>  {
> >> >>    int changed = 0;
> >> >>    unsigned log;
> >> >> @@ -14740,7 +14729,7 @@ print_reg (rtx x, int code, FILE *file)
> >> >>     pattern.  */
> >> >>
> >> >>  static int
> >> >> -get_some_local_dynamic_name_1 (rtx *px, void *data
> >ATTRIBUTE_UNUSED)
> >> >> +get_some_local_dynamic_name_1 (rtx *px, void *)
> >> >>  {
> >> >>    rtx x = *px;
> >> >>
> >> >> @@ -16066,7 +16055,7 @@ output_387_binary_op (rtx insn, rtx
> >*operands)
> >> >>  /* Check if a 256bit AVX register is referenced inside of EXP.  
> >*/
> >> >>
> >> >>  static int
> >> >> -ix86_check_avx256_register (rtx *pexp, void *data
> >ATTRIBUTE_UNUSED)
> >> >> +ix86_check_avx256_register (rtx *pexp, void *)
> >> >>  {
> >> >>    rtx exp = *pexp;
> >> >>
> >> >> @@ -16194,7 +16183,7 @@ ix86_mode_needed (int entity, rtx insn)
> >> >>  /* Check if a 256bit AVX register is referenced in stores.   */
> >> >>
> >> >>  static void
> >> >> -ix86_check_avx256_stores (rtx dest, const_rtx set
> >ATTRIBUTE_UNUSED, void *data)
> >> >> +ix86_check_avx256_stores (rtx dest, const_rtx, void *data)
> >> >>   {
> >> >>     if (ix86_check_avx256_register (&dest, NULL))
> >> >>      {
> >> >> @@ -16322,7 +16311,7 @@ ix86_mode_exit (int entity)
> >> >>  }
> >> >>
> >> >>  static int
> >> >> -ix86_mode_priority (int entity ATTRIBUTE_UNUSED, int n)
> >> >> +ix86_mode_priority (int, int n)
> >> >>  {
> >> >>    return n;
> >> >>  }
> >> >> @@ -18574,8 +18563,8 @@ ix86_dep_by_shift_count (const_rtx
> >set_insn, const_rtx use_insn)
> >> >>     appropriate constraints.  */
> >> >>
> >> >>  bool
> >> >> -ix86_unary_operator_ok (enum rtx_code code ATTRIBUTE_UNUSED,
> >> >> -                       enum machine_mode mode ATTRIBUTE_UNUSED,
> >> >> +ix86_unary_operator_ok (enum rtx_code,
> >> >> +                       enum machine_mode,
> >> >>                         rtx operands[2])
> >> >>  {
> >> >>    /* If one of operands is memory, source and destination must
> >match.  */
> >> >> @@ -18729,8 +18718,7 @@ ix86_expand_convert_uns_didf_sse (rtx
> >target, rtx input)
> >> >>
> >> >>  /* Not used, but eases macroization of patterns.  */
> >> >>  void
> >> >> -ix86_expand_convert_uns_sixf_sse (rtx target ATTRIBUTE_UNUSED,
> >> >> -                                 rtx input ATTRIBUTE_UNUSED)
> >> >> +ix86_expand_convert_uns_sixf_sse (rtx, rtx)
> >> >>  {
> >> >>    gcc_unreachable ();
> >> >>  }
> >> >> @@ -19350,7 +19338,7 @@ ix86_expand_int_compare (enum rtx_code
> >code, rtx op0, rtx op1)
> >> >>     Return the appropriate mode to use.  */
> >> >>
> >> >>  enum machine_mode
> >> >> -ix86_fp_compare_mode (enum rtx_code code ATTRIBUTE_UNUSED)
> >> >> +ix86_fp_compare_mode (enum rtx_code)
> >> >>  {
> >> >>    /* ??? In order to make all comparisons reversible, we do all
> >comparisons
> >> >>       non-trapping when compiling for IEEE.  Once gcc is able to
> >distinguish
> >> >> @@ -19565,7 +19553,7 @@ ix86_fp_comparison_cost (enum rtx_code
> >code)
> >> >>     (2 bytes, vs. 3 for fnstsw+sahf and at least 5 for
> >fnstsw+test).  */
> >> >>
> >> >>  enum ix86_fpcmp_strategy
> >> >> -ix86_fp_comparison_strategy (enum rtx_code code ATTRIBUTE_UNUSED)
> >> >> +ix86_fp_comparison_strategy (enum rtx_code)
> >> >>  {
> >> >>    /* Do fcomi/sahf based test when profitable.  */
> >> >>
> >> >> @@ -26528,9 +26516,7 @@ core2i7_first_cycle_multipass_fini (void
> >*_data)
> >> >>
> >> >>  /* Prepare for scheduling pass.  */
> >> >>  static void
> >> >> -ix86_sched_init_global (FILE *dump ATTRIBUTE_UNUSED,
> >> >> -                       int verbose ATTRIBUTE_UNUSED,
> >> >> -                       int max_uid ATTRIBUTE_UNUSED)
> >> >> +ix86_sched_init_global (FILE *, int, int)
> >> >>  {
> >> >>    /* Install scheduling hooks for current CPU.  Some of these
> >hooks are used
> >> >>       in time-critical parts of the scheduler, so we only set them
> >up when
> >> >> @@ -32760,7 +32746,7 @@ ix86_init_builtins (void)
> >> >>  /* Return the ix86 builtin for CODE.  */
> >> >>
> >> >>  static tree
> >> >> -ix86_builtin_decl (unsigned code, bool initialize_p
> >ATTRIBUTE_UNUSED)
> >> >> +ix86_builtin_decl (unsigned code, bool)
> >> >>  {
> >> >>    if (code >= IX86_BUILTIN_MAX)
> >> >>      return error_mark_node;
> >> >> @@ -36916,8 +36902,7 @@ ix86_vectorize_builtin_gather (const_tree
> >mem_vectype,
> >> >>     reciprocal of the function, or NULL_TREE if not available.  */
> >> >>
> >> >>  static tree
> >> >> -ix86_builtin_reciprocal (unsigned int fn, bool md_fn,
> >> >> -                        bool sqrt ATTRIBUTE_UNUSED)
> >> >> +ix86_builtin_reciprocal (unsigned int fn, bool md_fn, bool)
> >> >>  {
> >> >>    if (! (TARGET_SSE_MATH && !optimize_insn_for_size_p ()
> >> >>          && flag_finite_math_only && !flag_trapping_math
> >> >> @@ -38529,7 +38514,7 @@ x86_order_regs_for_local_alloc (void)
> >> >>  static tree
> >> >>  ix86_handle_callee_pop_aggregate_return (tree *node, tree name,
> >> >>                                               tree args,
> >> >> -                                             int flags
> >ATTRIBUTE_UNUSED,
> >> >> +                                             int,
> >> >>                                               bool *no_add_attrs)
> >> >>  {
> >> >>    if (TREE_CODE (*node) != FUNCTION_TYPE
> >> >> @@ -38579,9 +38564,8 @@ ix86_handle_callee_pop_aggregate_return
> >(tree *node, tree name,
> >> >>  /* Handle a "ms_abi" or "sysv" attribute; arguments as in
> >> >>     struct attribute_spec.handler.  */
> >> >>  static tree
> >> >> -ix86_handle_abi_attribute (tree *node, tree name,
> >> >> -                             tree args ATTRIBUTE_UNUSED,
> >> >> -                             int flags ATTRIBUTE_UNUSED, bool
> >*no_add_attrs)
> >> >> +ix86_handle_abi_attribute (tree *node, tree name, tree, int,
> >> >> +                          bool *no_add_attrs)
> >> >>  {
> >> >>    if (TREE_CODE (*node) != FUNCTION_TYPE
> >> >>        && TREE_CODE (*node) != METHOD_TYPE
> >> >> @@ -38620,9 +38604,8 @@ ix86_handle_abi_attribute (tree *node,
> >tree name,
> >> >>  /* Handle a "ms_struct" or "gcc_struct" attribute; arguments as
> >in
> >> >>     struct attribute_spec.handler.  */
> >> >>  static tree
> >> >> -ix86_handle_struct_attribute (tree *node, tree name,
> >> >> -                             tree args ATTRIBUTE_UNUSED,
> >> >> -                             int flags ATTRIBUTE_UNUSED, bool
> >*no_add_attrs)
> >> >> +ix86_handle_struct_attribute (tree *node, tree name, tree, int,
> >> >> +                             bool *no_add_attrs)
> >> >>  {
> >> >>    tree *type = NULL;
> >> >>    if (DECL_P (*node))
> >> >> @@ -38654,9 +38637,8 @@ ix86_handle_struct_attribute (tree *node,
> >tree name,
> >> >>  }
> >> >>
> >> >>  static tree
> >> >> -ix86_handle_fndecl_attribute (tree *node, tree name,
> >> >> -                              tree args ATTRIBUTE_UNUSED,
> >> >> -                              int flags ATTRIBUTE_UNUSED, bool
> >*no_add_attrs)
> >> >> +ix86_handle_fndecl_attribute (tree *node, tree name, tree, int,
> >> >> +                             bool *no_add_attrs)
> >> >>  {
> >> >>    if (TREE_CODE (*node) != FUNCTION_DECL)
> >> >>      {
> >> >> @@ -38734,9 +38716,8 @@ x86_this_parameter (tree function)
> >> >>  /* Determine whether x86_output_mi_thunk can succeed.  */
> >> >>
> >> >>  static bool
> >> >> -x86_can_output_mi_thunk (const_tree thunk ATTRIBUTE_UNUSED,
> >> >> -                        HOST_WIDE_INT delta ATTRIBUTE_UNUSED,
> >> >> -                        HOST_WIDE_INT vcall_offset, const_tree
> >function)
> >> >> +x86_can_output_mi_thunk (const_tree, HOST_WIDE_INT, HOST_WIDE_INT
> >vcall_offset,
> >> >> +                        const_tree function)
> >> >>  {
> >> >>    /* 64-bit can handle anything.  */
> >> >>    if (TARGET_64BIT)
> >> >> @@ -38765,8 +38746,7 @@ x86_can_output_mi_thunk (const_tree thunk
> >ATTRIBUTE_UNUSED,
> >> >>     *(*this + vcall_offset) should be added to THIS.  */
> >> >>
> >> >>  static void
> >> >> -x86_output_mi_thunk (FILE *file,
> >> >> -                    tree thunk ATTRIBUTE_UNUSED, HOST_WIDE_INT
> >delta,
> >> >> +x86_output_mi_thunk (FILE *file, tree, HOST_WIDE_INT delta,
> >> >>                      HOST_WIDE_INT vcall_offset, tree function)
> >> >>  {
> >> >>    rtx this_param = x86_this_parameter (function);
> >> >> @@ -39420,7 +39400,7 @@ x86_extended_QIreg_mentioned_p (rtx insn)
> >> >>  /* Return nonzero when P points to register encoded via REX
> >prefix.
> >> >>     Called via for_each_rtx.  */
> >> >>  static int
> >> >> -extended_reg_mentioned_1 (rtx *p, void *data ATTRIBUTE_UNUSED)
> >> >> +extended_reg_mentioned_1 (rtx *p, void *)
> >> >>  {
> >> >>     unsigned int regno;
> >> >>     if (!REG_P (*p))
> >> >> @@ -41166,9 +41146,7 @@ ix86_c_mode_for_suffix (char suffix)
> >> >>     with the old cc0-based compiler.  */
> >> >>
> >> >>  static tree
> >> >> -ix86_md_asm_clobbers (tree outputs ATTRIBUTE_UNUSED,
> >> >> -                     tree inputs ATTRIBUTE_UNUSED,
> >> >> -                     tree clobbers)
> >> >> +ix86_md_asm_clobbers (tree, tree, tree clobbers)
> >> >>  {
> >> >>    clobbers = tree_cons (NULL_TREE, build_string (5, "flags"),
> >> >>                         clobbers);
> >> >> @@ -42375,8 +42353,7 @@ static const struct attribute_spec
> >ix86_attribute_table[] =
> >> >>  /* Implement targetm.vectorize.builtin_vectorization_cost.  */
> >> >>  static int
> >> >>  ix86_builtin_vectorization_cost (enum vect_cost_for_stmt
> >type_of_cost,
> >> >> -                                 tree vectype,
> >> >> -                                 int misalign ATTRIBUTE_UNUSED)
> >> >> +                                 tree vectype, int)
> >> >>  {
> >> >>    unsigned elements;
> >> >>
> >> >> @@ -46424,8 +46401,7 @@ has_dispatch (rtx insn, int action)
> >> >>     enabled for other processors.  */
> >> >>
> >> >>  static int
> >> >> -ix86_reassociation_width (unsigned int opc ATTRIBUTE_UNUSED,
> >> >> -                         enum machine_mode mode)
> >> >> +ix86_reassociation_width (unsigned int, enum machine_mode mode)
> >> >>  {
> >> >>    int res = 1;
> >> >>
> >> >> @@ -46522,7 +46498,7 @@ ix86_spill_class (reg_class_t rclass, enum
> >machine_mode mode)
> >> >>  /* Implement targetm.vectorize.init_cost.  */
> >> >>
> >> >>  static void *
> >> >> -ix86_init_cost (struct loop *loop_info ATTRIBUTE_UNUSED)
> >> >> +ix86_init_cost (struct loop *)
> >> >>  {
> >> >>    unsigned *cost = XNEWVEC (unsigned, 3);
> >> >>    cost[vect_prologue] = cost[vect_body] = cost[vect_epilogue] =
> >0;
> >> >> diff --git a/gcc/config/i386/winnt-stubs.c
> >b/gcc/config/i386/winnt-stubs.c
> >> >> index 30321d0..85a3141 100644
> >> >> --- a/gcc/config/i386/winnt-stubs.c
> >> >> +++ b/gcc/config/i386/winnt-stubs.c
> >> >> @@ -33,19 +33,19 @@ along with GCC; see the file COPYING3.  If not
> >see
> >> >>  #include "hashtab.h"
> >> >>
> >> >>  bool
> >> >> -i386_pe_type_dllimport_p (tree decl ATTRIBUTE_UNUSED)
> >> >> +i386_pe_type_dllimport_p (tree)
> >> >>  {
> >> >>    return false;
> >> >>  }
> >> >>
> >> >>
> >> >>  bool
> >> >> -i386_pe_type_dllexport_p (tree decl ATTRIBUTE_UNUSED)
> >> >> +i386_pe_type_dllexport_p (tree)
> >> >>  {
> >> >>    return false;
> >> >>  }
> >> >>
> >> >>
> >> >>  void
> >> >> -i386_pe_adjust_class_at_definition (tree t ATTRIBUTE_UNUSED)
> >> >> +i386_pe_adjust_class_at_definition (tree)
> >> >>  { }
> >> >> diff --git a/gcc/config/i386/winnt.c b/gcc/config/i386/winnt.c
> >> >> index 8a5d982..bf6e2b1 100644
> >> >> --- a/gcc/config/i386/winnt.c
> >> >> +++ b/gcc/config/i386/winnt.c
> >> >> @@ -66,9 +66,8 @@ along with GCC; see the file COPYING3.  If not
> >see
> >> >>  /* Handle a "shared" attribute;
> >> >>     arguments as in struct attribute_spec.handler.  */
> >> >>  tree
> >> >> -ix86_handle_shared_attribute (tree *node, tree name,
> >> >> -                             tree args ATTRIBUTE_UNUSED,
> >> >> -                             int flags ATTRIBUTE_UNUSED, bool
> >*no_add_attrs)
> >> >> +ix86_handle_shared_attribute (tree *node, tree name, tree, int,
> >> >> +                             bool *no_add_attrs)
> >> >>  {
> >> >>    if (TREE_CODE (*node) != VAR_DECL)
> >> >>      {
> >> >> @@ -83,9 +82,7 @@ ix86_handle_shared_attribute (tree *node, tree
> >name,
> >> >>  /* Handle a "selectany" attribute;
> >> >>     arguments as in struct attribute_spec.handler.  */
> >> >>  tree
> >> >> -ix86_handle_selectany_attribute (tree *node, tree name,
> >> >> -                                tree args ATTRIBUTE_UNUSED,
> >> >> -                                int flags ATTRIBUTE_UNUSED,
> >> >> +ix86_handle_selectany_attribute (tree *node, tree name, tree,
> >int,
> >> >>                                  bool *no_add_attrs)
> >> >>  {
> >> >>    /* The attribute applies only to objects that are initialized
> >and have
> >> >> @@ -264,8 +261,7 @@ i386_pe_maybe_mangle_decl_assembler_name (tree
> >decl, tree id)
> >> >>     user-specified visibility attributes.  */
> >> >>
> >> >>  void
> >> >> -i386_pe_assemble_visibility (tree decl,
> >> >> -                            int vis ATTRIBUTE_UNUSED)
> >> >> +i386_pe_assemble_visibility (tree decl, int)
> >> >>  {
> >> >>    if (!decl
> >> >>        || !lookup_attribute ("visibility", DECL_ATTRIBUTES
> >(decl)))
> >> >> @@ -292,7 +288,7 @@ i386_pe_mangle_decl_assembler_name (tree decl,
> >tree id)
> >> >>     a file stream.  */
> >> >>
> >> >>  tree
> >> >> -i386_pe_mangle_assembler_name (const char *name ATTRIBUTE_UNUSED)
> >> >> +i386_pe_mangle_assembler_name (const char *name)
> >> >>  {
> >> >>    const char *skipped = name + (*name == '*' ? 1 : 0);
> >> >>    const char *stripped = targetm.strip_name_encoding (skipped);
> >> >> @@ -467,7 +463,7 @@ i386_pe_reloc_rw_mask (void)
> >> >>  #define SECTION_PE_SHARED      SECTION_MACH_DEP
> >> >>
> >> >>  unsigned int
> >> >> -i386_pe_section_type_flags (tree decl, const char *name, int
> >reloc)
> >> >> +i386_pe_section_type_flags (tree decl, const char *, int reloc)
> >> >>  {
> >> >>    unsigned int flags;
> >> >>
> >> >> @@ -560,7 +556,7 @@ i386_pe_asm_named_section (const char *name,
> >unsigned int flags,
> >> >>  void
> >> >>  i386_pe_asm_output_aligned_decl_common (FILE *stream, tree decl,
> >> >>                                         const char *name,
> >HOST_WIDE_INT size,
> >> >> -                                       HOST_WIDE_INT align
> >ATTRIBUTE_UNUSED)
> >> >> +                                       HOST_WIDE_INT align)
> >> >>  {
> >> >>    HOST_WIDE_INT rounded;
> >> >>
> >> >> @@ -1276,8 +1272,7 @@ i386_pe_start_function (FILE *f, const char
> >*name, tree decl)
> >> >>  }
> >> >>
> >> >>  void
> >> >> -i386_pe_end_function (FILE *f, const char *name ATTRIBUTE_UNUSED,
> >> >> -                     tree decl ATTRIBUTE_UNUSED)
> >> >> +i386_pe_end_function (FILE *f, const char *, tree)
> >> >>  {
> >> >>    i386_pe_seh_fini (f);
> >> >>  }
> >> >> --
> >> >> 2.0.1
> >> >>
> 
>