Re: [PATCH v2 1/2] Implement ASM_DECLARE_FUNCTION_NAME using ASM_OUTPUT_FUNCTION_LABEL

[Jan-Benedict Glaw]

On Tue, 2024-01-02 20:41:37 +0100, Ilya Leoshkevich <i...@linux.ibm.com> wrote:
> diff --git a/gcc/config/ia64/ia64.cc b/gcc/config/ia64/ia64.cc
> index ac566efcf19..92d00bf922f 100644
> --- a/gcc/config/ia64/ia64.cc
> +++ b/gcc/config/ia64/ia64.cc
> @@ -3886,8 +3886,7 @@ ia64_expand_prologue (void)
>  /* Output the textual info surrounding the prologue.  */
>  
>  void
> -ia64_start_function (FILE *file, const char *fnname,
> -                  tree decl ATTRIBUTE_UNUSED)
> +ia64_start_function (FILE *file, const char *fnname, tree decl)
>  {
>  #if TARGET_ABI_OPEN_VMS
>    vms_start_function (fnname);
> @@ -3896,7 +3895,7 @@ ia64_start_function (FILE *file, const char *fnname,
>    fputs ("\t.proc ", file);
>    assemble_name (file, fnname);
>    fputc ('\n', file);
> -  ASM_OUTPUT_LABEL (file, fnname);
> +  ASM_OUTPUT_FUNCTION_LABEL (file, fnname, decl);
>  }
>  
>  /* Called after register allocation to add any instructions needed for the

Seems for this I'll get a new warning (forced to error by configuring
with --enable-werror-always), cf. 
http://toolchain.lug-owl.de/laminar/log/gcc-ia64-elf/48 :

[all 2024-01-12 16:32:32] 
/var/lib/laminar/run/gcc-ia64-elf/48/local-toolchain-install/bin/g++  -fno-PIE 
-c   -g -O2   -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti 
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings 
-Wcast-qual -Wmissing-format-attribute -Wconditionally-supported 
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros 
-Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -fno-PIE -I. -I. 
-I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include  
-I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libcody  
-I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd 
-I../libdecnumber -I../../gcc/gcc/../libbacktrace   -o ia64.o -MT ia64.o -MMD 
-MP -MF ./.deps/ia64.TPo ../../gcc/gcc/config/ia64/ia64.cc
[all 2024-01-12 16:32:34] ../../gcc/gcc/config/ia64/ia64.cc: In function 'void 
ia64_start_function(FILE*, const char*, tree)':
[all 2024-01-12 16:32:34] ../../gcc/gcc/config/ia64/ia64.cc:3889:59: error: 
unused parameter 'decl' [-Werror=unused-parameter]
[all 2024-01-12 16:32:34]  3889 | ia64_start_function (FILE *file, const char 
*fnname, tree decl)
[all 2024-01-12 16:32:34]       |                                               
       ~~~~~^~~~
[all 2024-01-12 16:32:49] cc1plus: all warnings being treated as errors
[all 2024-01-12 16:32:49] make[1]: *** [Makefile:2555: ia64.o] Error 1


So the ATTRIBUTE_UNUSED seems to be a good cover, or update the
ASM_OUTPUT_FUNCTION_LABEL macro to always "use" its last argument.

MfG, JBG

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