1 // Copyright 2018 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #if !V8_ENABLE_WEBASSEMBLY 6 #error This header should only be included if WebAssembly is enabled. 7 #endif // !V8_ENABLE_WEBASSEMBLY 8 9 #ifndef V8_WASM_WASM_TIER_H_ 10 #define V8_WASM_WASM_TIER_H_ 11 12 #include <cstdint> 13 14 namespace v8 { 15 namespace internal { 16 namespace wasm { 17 18 // All the tiers of Wasm execution. 19 enum class ExecutionTier : int8_t { 20 kNone, 21 kLiftoff, 22 kTurbofan, 23 }; 24 ExecutionTierToString(ExecutionTier tier)25inline const char* ExecutionTierToString(ExecutionTier tier) { 26 switch (tier) { 27 case ExecutionTier::kTurbofan: 28 return "turbofan"; 29 case ExecutionTier::kLiftoff: 30 return "liftoff"; 31 case ExecutionTier::kNone: 32 return "none"; 33 } 34 } 35 36 // {kForDebugging} is used for default tiered-down code, {kWithBreakpoints} if 37 // the code also contains breakpoints, and {kForStepping} for code that is 38 // flooded with breakpoints. 39 enum ForDebugging : int8_t { 40 kNoDebugging = 0, 41 kForDebugging, 42 kWithBreakpoints, 43 kForStepping 44 }; 45 46 enum TieringState : int8_t { kTieredUp, kTieredDown }; 47 48 } // namespace wasm 49 } // namespace internal 50 } // namespace v8 51 52 #endif // V8_WASM_WASM_TIER_H_ 53