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Output cgraph profile inconsistencies
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: gcc-patches at gcc dot gnu dot org
- Date: Mon, 12 Jun 2017 14:38:43 +0200
- Subject: Output cgraph profile inconsistencies
- Authentication-results: sourceware.org; auth=none
Hi,
this patch adds code to output profile instantieis in callgraph.
Bootstrapped/regtested x86_64-linux, comitted.
Honza
Index: cgraph.c
===================================================================
--- cgraph.c (revision 249112)
+++ cgraph.c (working copy)
@@ -2094,7 +2094,7 @@ cgraph_node::dump (FILE *f)
fprintf (f, " Function flags:");
if (count.initialized_p ())
{
- fprintf (f, " profile_count ");
+ fprintf (f, " count: ");
count.dump (f);
}
if (origin)
@@ -2172,10 +2172,13 @@ cgraph_node::dump (FILE *f)
fprintf (f, " Called by: ");
+ profile_count sum = profile_count::zero ();
for (edge = callers; edge; edge = edge->next_caller)
{
fprintf (f, "%s ", edge->caller->dump_name ());
edge->dump_edge_flags (f);
+ if (edge->count.initialized_p ())
+ sum += edge->count;
}
fprintf (f, "\n Calls: ");
@@ -2186,6 +2189,36 @@ cgraph_node::dump (FILE *f)
}
fprintf (f, "\n");
+ if (count.initialized_p ())
+ {
+ bool ok = true;
+ bool min = false;
+ ipa_ref *ref;
+
+ FOR_EACH_ALIAS (this, ref)
+ if (dyn_cast <cgraph_node *> (ref->referring)->count.initialized_p ())
+ sum += dyn_cast <cgraph_node *> (ref->referring)->count;
+
+ if (global.inlined_to
+ || (symtab->state < EXPANSION
+ && ultimate_alias_target () == this && only_called_directly_p ()))
+ ok = !count.differs_from_p (sum);
+ else if (count > profile_count::from_gcov_type (100)
+ && count < sum.apply_scale (99, 100))
+ ok = false, min = true;
+ if (!ok)
+ {
+ fprintf (f, " Invalid sum of caller counts ");
+ sum.dump (f);
+ if (min)
+ fprintf (f, ", should be at most ");
+ else
+ fprintf (f, ", should be ");
+ count.dump (f);
+ fprintf (f, "\n");
+ }
+ }
+
for (edge = indirect_calls; edge; edge = edge->next_callee)
{
if (edge->indirect_info->polymorphic)