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8059606: Enable per-method usage of CompileThresholdScaling (per-method compilation thresholds)

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Changed interpreter and compilation policies to allow using CompileThresholdScaling on a per-method level

Reviewed-by: jrose, kvn
This commit is contained in:
Zoltan Majo 2015-01-21 10:51:35 +01:00
parent 3d814126c2
commit e559c17954
32 changed files with 293 additions and 157 deletions
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14
hotspot/src/share/vm/c1/c1_LIRGenerator.cpp
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@ -32,6 +32,7 @@
#include "ci/ciArrayKlass.hpp"
#include "ci/ciInstance.hpp"
#include "ci/ciObjArray.hpp"
#include "runtime/arguments.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
#include "runtime/vm_version.hpp"
@ -3351,7 +3352,12 @@ void LIRGenerator::do_ProfileInvoke(ProfileInvoke* x) {
if (!x->inlinee()->is_accessor()) {
CodeEmitInfo* info = state_for(x, x->state(), true);
// Notify the runtime very infrequently only to take care of counter overflows
increment_event_counter_impl(info, x->inlinee(), (1 << Tier23InlineeNotifyFreqLog) - 1, InvocationEntryBci, false, true);
int freq_log = Tier23InlineeNotifyFreqLog;
double scale;
if (_method->has_option_value("CompileThresholdScaling", scale)) {
freq_log = Arguments::scaled_freq_log(freq_log, scale);
}
increment_event_counter_impl(info, x->inlinee(), right_n_bits(freq_log), InvocationEntryBci, false, true);
}
}
@ -3366,7 +3372,11 @@ void LIRGenerator::increment_event_counter(CodeEmitInfo* info, int bci, bool bac
ShouldNotReachHere();
}
// Increment the appropriate invocation/backedge counter and notify the runtime.
increment_event_counter_impl(info, info->scope()->method(), (1 << freq_log) - 1, bci, backedge, true);
double scale;
if (_method->has_option_value("CompileThresholdScaling", scale)) {
freq_log = Arguments::scaled_freq_log(freq_log, scale);
}
increment_event_counter_impl(info, info->scope()->method(), right_n_bits(freq_log), bci, backedge, true);
}
void LIRGenerator::decrement_age(CodeEmitInfo* info) {