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7092905: C2: Keep track of the number of dead nodes

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Keep an (almost) accurate running count of the reachable (live) flow graph nodes.

Reviewed-by: kvn, twisti, jrose, vlivanov
This commit is contained in:
Bharadwaj Yadavalli 2012-11-27 17:24:15 -08:00
parent 96562be9e5
commit 2d2532e740
28 changed files with 306 additions and 120 deletions
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8
hotspot/src/share/vm/opto/stringopts.cpp
View file

@ -241,13 +241,13 @@ class StringConcat : public ResourceObj {
_stringopts->gvn()->transform(call);
C->gvn_replace_by(uct, call);
uct->disconnect_inputs(NULL);
uct->disconnect_inputs(NULL, C);
}
}
void cleanup() {
// disconnect the hook node
_arguments->disconnect_inputs(NULL);
_arguments->disconnect_inputs(NULL, _stringopts->C);
}
};
@ -358,7 +358,7 @@ void StringConcat::eliminate_initialize(InitializeNode* init) {
C->gvn_replace_by(mem_proj, mem);
}
C->gvn_replace_by(init, C->top());
init->disconnect_inputs(NULL);
init->disconnect_inputs(NULL, C);
}
Node_List PhaseStringOpts::collect_toString_calls() {
@ -1477,6 +1477,6 @@ void PhaseStringOpts::replace_string_concat(StringConcat* sc) {
kit.replace_call(sc->end(), result);
// Unhook any hook nodes
string_sizes->disconnect_inputs(NULL);
string_sizes->disconnect_inputs(NULL, C);
sc->cleanup();
}