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Add debugging helpers for ranger.

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These are debugging aids for help in debugging ranger based passes.

gcc/ChangeLog:

	* gimple-range.cc (debug_seed_ranger): New.
	(dump_ranger): New.
	(debug_ranger): New.
This commit is contained in:
Aldy Hernandez 2021-06-14 11:39:33 +02:00
parent 3dfa4fe9f1
commit 3f3ee13959
1 changed files with 79 additions and 0 deletions
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79
gcc/gimple-range.cc
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@ -1662,4 +1662,83 @@ disable_ranger (struct function *fun)
fun->x_range_query = &global_ranges;
}
// =========================================
// Debugging helpers.
// =========================================
// Query all statements in the IL to precalculate computable ranges in RANGER.
static DEBUG_FUNCTION void
debug_seed_ranger (gimple_ranger &ranger)
{
// Recalculate SCEV to make sure the dump lists everything.
if (scev_initialized_p ())
{
scev_finalize ();
scev_initialize ();
}
basic_block bb;
int_range_max r;
gimple_stmt_iterator gsi;
FOR_EACH_BB_FN (bb, cfun)
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{
gimple *stmt = gsi_stmt (gsi);
if (is_gimple_debug (stmt))
continue;
ranger.range_of_stmt (r, stmt);
}
}
// Dump all that ranger knows for the current function.
DEBUG_FUNCTION void
dump_ranger (FILE *out)
{
gimple_ranger ranger;
debug_seed_ranger (ranger);
ranger.dump (out);
}
DEBUG_FUNCTION void
debug_ranger ()
{
dump_ranger (stderr);
}
// Dump all that ranger knows on a path of BBs.
//
// Note that the blocks are in reverse order, thus the exit block is
// path[0].
DEBUG_FUNCTION void
dump_ranger (FILE *dump_file, const vec<basic_block> &path)
{
if (path.length () == 0)
{
fprintf (dump_file, "empty\n");
return;
}
gimple_ranger ranger;
debug_seed_ranger (ranger);
unsigned i = path.length ();
do
{
i--;
ranger.dump_bb (dump_file, path[i]);
}
while (i > 0);
}
DEBUG_FUNCTION void
debug_ranger (const vec<basic_block> &path)
{
dump_ranger (stderr, path);
}
#include "gimple-range-tests.cc"