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[PATCH 2/2] Make -Q --help print param defaults and min/max values
- From: Andi Kleen <andi at firstfloor dot org>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Andi Kleen <ak at linux dot intel dot com>
- Date: Sat, 27 Sep 2014 06:54:25 -0700
- Subject: [PATCH 2/2] Make -Q --help print param defaults and min/max values
- Authentication-results: sourceware.org; auth=none
- References: <1411826065-15761-1-git-send-email-andi at firstfloor dot org>
From: Andi Kleen <ak@linux.intel.com>
Make -Q --help print the --param default, min, max values, similar
to how it does print the defaults for other flags. This is useful
to let a option auto tuner automatically query all needed information
abourt gcc params (previously it needed to access the .def file in
the source)
gcc/:
2014-09-26 Andi Kleen <ak@linux.intel.com>
* opts.c (print_filtered_help): Print --param min/max/default
with -Q.
---
gcc/opts.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/gcc/opts.c b/gcc/opts.c
index 0a49bc0..5cb5a39 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -953,6 +953,7 @@ print_filtered_help (unsigned int include_flags,
const char *help;
bool found = false;
bool displayed = false;
+ char new_help[128];
if (include_flags == CL_PARAMS)
{
@@ -971,6 +972,15 @@ print_filtered_help (unsigned int include_flags,
/* Get the translation. */
help = _(help);
+ if (!opts->x_quiet_flag)
+ {
+ snprintf (new_help, sizeof (new_help),
+ _("default %d minimum %d maximum %d"),
+ compiler_params[i].default_value,
+ compiler_params[i].min_value,
+ compiler_params[i].max_value);
+ help = new_help;
+ }
wrap_help (help, param, strlen (param), columns);
}
putchar ('\n');
@@ -985,7 +995,6 @@ print_filtered_help (unsigned int include_flags,
for (i = 0; i < cl_options_count; i++)
{
- char new_help[128];
const struct cl_option *option = cl_options + i;
unsigned int len;
const char *opt;
--
2.1.1