On Thu, Jul 7, 2022 at 3:05 PM Martin Liška <mli...@suse.cz> wrote:
>
> Right now the following is printed:
>
> lto-dump
> .file "<artificial>"
> .ident "GCC: (GNU) 13.0.0 20220707 (experimental)"
> .section .note.GNU-stack,"",@progbits
>
> After the patch we print -help and do not emit any assembly output:
>
> lto-dump
> Usage: lto-dump [OPTION]... SUB_COMMAND [OPTION]...
>
> LTO dump tool command line options.
>
> -list [options] Dump the symbol list.
> -demangle Dump the demangled output.
> -defined-only Dump only the defined symbols.
> ...
>
> Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
>
> Ready to be installed?
OK
> Thanks,
> Martin
>
> gcc/lto/ChangeLog:
>
> * lto-dump.cc (lto_main): Exit in the function
> as we don't want any LTO bytecode processing.
>
> gcc/ChangeLog:
>
> * toplev.cc (init_asm_output): Do not init asm_out_file.
> ---
> gcc/lto/lto-dump.cc | 16 ++++++++++------
> gcc/toplev.cc | 2 +-
> 2 files changed, 11 insertions(+), 7 deletions(-)
>
> diff --git a/gcc/lto/lto-dump.cc b/gcc/lto/lto-dump.cc
> index f88486b5143..f3d852df51f 100644
> --- a/gcc/lto/lto-dump.cc
> +++ b/gcc/lto/lto-dump.cc
> @@ -316,7 +316,10 @@ lto_main (void)
> {
> quiet_flag = true;
> if (flag_lto_dump_tool_help)
> - dump_tool_help ();
> + {
> + dump_tool_help ();
> + exit (SUCCESS_EXIT_CODE);
> + }
>
> /* LTO is called as a front end, even though it is not a front end.
> Because it is called as a front end, TV_PHASE_PARSING and
> @@ -369,11 +372,12 @@ lto_main (void)
> {
> /* Dump specific gimple body of specified function. */
> dump_body ();
> - return;
> }
> else if (flag_dump_callgraph)
> - {
> - dump_symtab_graphviz ();
> - return;
> - }
> + dump_symtab_graphviz ();
> + else
> + dump_tool_help ();
> +
> + /* Exit right now. */
> + exit (SUCCESS_EXIT_CODE);
> }
> diff --git a/gcc/toplev.cc b/gcc/toplev.cc
> index a24ad5db438..61d234a9ef4 100644
> --- a/gcc/toplev.cc
> +++ b/gcc/toplev.cc
> @@ -721,7 +721,7 @@ init_asm_output (const char *name)
> "cannot open %qs for writing: %m", asm_file_name);
> }
>
> - if (!flag_syntax_only)
> + if (!flag_syntax_only && !(global_dc->lang_mask & CL_LTODump))
> {
> targetm.asm_out.file_start ();
>
> --
> 2.36.1
>
