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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.truffle;
import static org.graalvm.compiler.truffle.TruffleCompilerOptions.TruffleInliningMaxCallerSize;
import static org.graalvm.compiler.truffle.TruffleCompilerOptions.TruffleMaximumRecursiveInlining;
import com.oracle.truffle.api.CompilerOptions;
public class DefaultInliningPolicy implements TruffleInliningPolicy {
private static final String REASON_RECURSION = "number of recursions > " + TruffleCompilerOptions.getValue(TruffleMaximumRecursiveInlining);
private static final String REASON_MAXIMUM_NODE_COUNT = "deepNodeCount * callSites > " + TruffleCompilerOptions.getValue(TruffleInliningMaxCallerSize);
private static final String REASON_MAXIMUM_TOTAL_NODE_COUNT = "totalNodeCount > " + TruffleCompilerOptions.getValue(TruffleInliningMaxCallerSize);
private static final String REASON_CACHED = "CACHED!";
@Override
public double calculateScore(TruffleInliningProfile profile) {
return profile.getFrequency() / profile.getDeepNodeCount();
}
@Override
public boolean isAllowed(TruffleInliningProfile profile, int currentNodeCount, CompilerOptions options) {
if (profile.isCached()) {
profile.setFailedReason(REASON_CACHED);
return false;
}
if (profile.getRecursions() > TruffleCompilerOptions.getValue(TruffleMaximumRecursiveInlining)) {
profile.setFailedReason(REASON_RECURSION);
return false;
}
int inliningMaxCallerSize = TruffleCompilerOptions.getValue(TruffleInliningMaxCallerSize);
if (options instanceof GraalCompilerOptions) {
inliningMaxCallerSize = Math.max(inliningMaxCallerSize, ((GraalCompilerOptions) options).getMinInliningMaxCallerSize());
}
if (currentNodeCount + profile.getDeepNodeCount() > inliningMaxCallerSize) {
profile.setFailedReason(REASON_MAXIMUM_TOTAL_NODE_COUNT);
return false;
}
if (profile.isForced()) {
return true;
}
int cappedCallSites = Math.min(Math.max(profile.getCallSites(), 1), 10);
if (profile.getDeepNodeCount() * cappedCallSites > inliningMaxCallerSize) {
profile.setFailedReason(REASON_MAXIMUM_NODE_COUNT);
return false;
}
return true;
}
}