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8217922: Compiler dead code removal

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Reviewed-by: thartmann, neliasso
This commit is contained in:
Claes Redestad 2019-01-29 14:34:26 +01:00
parent 5c78491bd7
commit 6a9f775041
28 changed files with 11 additions and 322 deletions
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37
src/hotspot/share/runtime/deoptimization.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -1284,36 +1284,6 @@ void Deoptimization::revoke_biases_of_monitors(JavaThread* thread, frame fr, Reg
}
void Deoptimization::revoke_biases_of_monitors(CodeBlob* cb) {
if (!UseBiasedLocking) {
return;
}
assert(SafepointSynchronize::is_at_safepoint(), "must only be called from safepoint");
GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>();
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
if (jt->has_last_Java_frame()) {
StackFrameStream sfs(jt, true);
while (!sfs.is_done()) {
frame* cur = sfs.current();
if (cb->contains(cur->pc())) {
vframe* vf = vframe::new_vframe(cur, sfs.register_map(), jt);
compiledVFrame* cvf = compiledVFrame::cast(vf);
// Revoke monitors' biases in all scopes
while (!cvf->is_top()) {
collect_monitors(cvf, objects_to_revoke);
cvf = compiledVFrame::cast(cvf->sender());
}
collect_monitors(cvf, objects_to_revoke);
}
sfs.next();
}
}
}
BiasedLocking::revoke_at_safepoint(objects_to_revoke);
}
void Deoptimization::deoptimize_single_frame(JavaThread* thread, frame fr, Deoptimization::DeoptReason reason) {
assert(fr.can_be_deoptimized(), "checking frame type");
@ -2300,11 +2270,6 @@ jint Deoptimization::total_deoptimization_count() {
return _deoptimization_hist[Reason_none][0][0];
}
jint Deoptimization::deoptimization_count(DeoptReason reason) {
assert(reason >= 0 && reason < Reason_LIMIT, "oob");
return _deoptimization_hist[reason][0][0];
}
void Deoptimization::print_statistics() {
juint total = total_deoptimization_count();
juint account = total;