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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_DEOPTIMIZATION_KIND_H_
#define ART_RUNTIME_DEOPTIMIZATION_KIND_H_
#include "base/logging.h"
#include "base/macros.h"
namespace art HIDDEN {
enum class DeoptimizationKind {
kAotInlineCache = 0,
kJitInlineCache,
kJitSameTarget,
kLoopBoundsBCE,
kLoopNullBCE,
kBlockBCE,
kCHA,
kDebugging,
kFullFrame,
kLast = kFullFrame
};
inline const char* GetDeoptimizationKindName(DeoptimizationKind kind) {
switch (kind) {
case DeoptimizationKind::kAotInlineCache: return "AOT inline cache";
case DeoptimizationKind::kJitInlineCache: return "JIT inline cache";
case DeoptimizationKind::kJitSameTarget: return "JIT same target";
case DeoptimizationKind::kLoopBoundsBCE: return "loop bounds check elimination";
case DeoptimizationKind::kLoopNullBCE: return "loop bounds check elimination on null";
case DeoptimizationKind::kBlockBCE: return "block bounds check elimination";
case DeoptimizationKind::kCHA: return "class hierarchy analysis";
case DeoptimizationKind::kDebugging: return "Deopt requested for debug support";
case DeoptimizationKind::kFullFrame: return "full frame";
}
LOG(FATAL) << "Unexpected kind " << static_cast<size_t>(kind);
UNREACHABLE();
}
std::ostream& operator<<(std::ostream& os, const DeoptimizationKind& kind);
// We use a DeoptimizationStackSlot to record if a deoptimization is required
// for functions that are already on stack. The value in the slot specifies the
// reason we need to deoptimize.
enum class DeoptimizeFlagValue: uint8_t {
kCHA = 0b001,
kForceDeoptForRedefinition = 0b010,
kCheckCallerForDeopt = 0b100,
kAll = kCHA | kForceDeoptForRedefinition | kCheckCallerForDeopt
};
} // namespace art
#endif // ART_RUNTIME_DEOPTIMIZATION_KIND_H_
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