1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef ART_RUNTIME_DEOPTIMIZATION_KIND_H_
18 #define ART_RUNTIME_DEOPTIMIZATION_KIND_H_
19
20 #include "base/logging.h"
21 #include "base/macros.h"
22
23 namespace art HIDDEN {
24
25 enum class DeoptimizationKind {
26 kAotInlineCache = 0,
27 kJitInlineCache,
28 kJitSameTarget,
29 kLoopBoundsBCE,
30 kLoopNullBCE,
31 kBlockBCE,
32 kCHA,
33 kDebugging,
34 kFullFrame,
35 kLast = kFullFrame
36 };
37
GetDeoptimizationKindName(DeoptimizationKind kind)38 inline const char* GetDeoptimizationKindName(DeoptimizationKind kind) {
39 switch (kind) {
40 case DeoptimizationKind::kAotInlineCache: return "AOT inline cache";
41 case DeoptimizationKind::kJitInlineCache: return "JIT inline cache";
42 case DeoptimizationKind::kJitSameTarget: return "JIT same target";
43 case DeoptimizationKind::kLoopBoundsBCE: return "loop bounds check elimination";
44 case DeoptimizationKind::kLoopNullBCE: return "loop bounds check elimination on null";
45 case DeoptimizationKind::kBlockBCE: return "block bounds check elimination";
46 case DeoptimizationKind::kCHA: return "class hierarchy analysis";
47 case DeoptimizationKind::kDebugging: return "Deopt requested for debug support";
48 case DeoptimizationKind::kFullFrame: return "full frame";
49 }
50 LOG(FATAL) << "Unexpected kind " << static_cast<size_t>(kind);
51 UNREACHABLE();
52 }
53
54 std::ostream& operator<<(std::ostream& os, const DeoptimizationKind& kind);
55
56 // We use a DeoptimizationStackSlot to record if a deoptimization is required
57 // for functions that are already on stack. The value in the slot specifies the
58 // reason we need to deoptimize.
59 enum class DeoptimizeFlagValue: uint8_t {
60 kCHA = 0b001,
61 kForceDeoptForRedefinition = 0b010,
62 kCheckCallerForDeopt = 0b100,
63 kAll = kCHA | kForceDeoptForRedefinition | kCheckCallerForDeopt
64 };
65
66 } // namespace art
67
68 #endif // ART_RUNTIME_DEOPTIMIZATION_KIND_H_
69