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?
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
