1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_WASM_FUNCTION_COMPILER_H_
#define V8_WASM_FUNCTION_COMPILER_H_
#include "src/codegen/code-desc.h"
#include "src/trap-handler/trap-handler.h"
#include "src/wasm/compilation-environment.h"
#include "src/wasm/function-body-decoder.h"
#include "src/wasm/wasm-limits.h"
#include "src/wasm/wasm-module.h"
#include "src/wasm/wasm-tier.h"
namespace v8 {
namespace internal {
class AssemblerBuffer;
class Counters;
class OptimizedCompilationJob;
namespace wasm {
class NativeModule;
class WasmCode;
class WasmEngine;
struct WasmFunction;
class WasmInstructionBuffer final {
public:
~WasmInstructionBuffer();
std::unique_ptr<AssemblerBuffer> CreateView();
std::unique_ptr<uint8_t[]> ReleaseBuffer();
static std::unique_ptr<WasmInstructionBuffer> New();
// Override {operator delete} to avoid implicit instantiation of {operator
// delete} with {size_t} argument. The {size_t} argument would be incorrect.
void operator delete(void* ptr) { ::operator delete(ptr); }
private:
WasmInstructionBuffer() = delete;
DISALLOW_COPY_AND_ASSIGN(WasmInstructionBuffer);
};
struct WasmCompilationResult {
public:
MOVE_ONLY_WITH_DEFAULT_CONSTRUCTORS(WasmCompilationResult);
enum Kind : int8_t {
kFunction,
kWasmToJsWrapper,
kInterpreterEntry,
};
bool succeeded() const { return code_desc.buffer != nullptr; }
bool failed() const { return !succeeded(); }
operator bool() const { return succeeded(); }
CodeDesc code_desc;
std::unique_ptr<uint8_t[]> instr_buffer;
uint32_t frame_slot_count = 0;
uint32_t tagged_parameter_slots = 0;
OwnedVector<byte> source_positions;
OwnedVector<trap_handler::ProtectedInstructionData> protected_instructions;
int func_index = static_cast<int>(kAnonymousFuncIndex);
ExecutionTier requested_tier;
ExecutionTier result_tier;
Kind kind = kFunction;
};
class V8_EXPORT_PRIVATE WasmCompilationUnit final {
public:
static ExecutionTier GetDefaultExecutionTier(const WasmModule*);
WasmCompilationUnit(int index, ExecutionTier tier)
: func_index_(index), tier_(tier) {}
WasmCompilationResult ExecuteCompilation(
WasmEngine*, CompilationEnv*, const std::shared_ptr<WireBytesStorage>&,
Counters*, WasmFeatures* detected);
ExecutionTier tier() const { return tier_; }
int func_index() const { return func_index_; }
static void CompileWasmFunction(Isolate*, NativeModule*,
WasmFeatures* detected, const WasmFunction*,
ExecutionTier);
private:
WasmCompilationResult ExecuteFunctionCompilation(
WasmEngine* wasm_engine, CompilationEnv* env,
const std::shared_ptr<WireBytesStorage>& wire_bytes_storage,
Counters* counters, WasmFeatures* detected);
WasmCompilationResult ExecuteImportWrapperCompilation(WasmEngine* engine,
CompilationEnv* env);
int func_index_;
ExecutionTier tier_;
};
// {WasmCompilationUnit} should be trivially copyable and small enough so we can
// efficiently pass it by value.
ASSERT_TRIVIALLY_COPYABLE(WasmCompilationUnit);
STATIC_ASSERT(sizeof(WasmCompilationUnit) <= 2 * kSystemPointerSize);
class V8_EXPORT_PRIVATE JSToWasmWrapperCompilationUnit final {
public:
JSToWasmWrapperCompilationUnit(Isolate* isolate, FunctionSig* sig,
bool is_import);
~JSToWasmWrapperCompilationUnit();
void Prepare(Isolate* isolate);
void Execute();
Handle<Code> Finalize(Isolate* isolate);
// Run a compilation unit synchronously.
static Handle<Code> CompileJSToWasmWrapper(Isolate* isolate, FunctionSig* sig,
bool is_import);
private:
std::unique_ptr<OptimizedCompilationJob> job_;
};
} // namespace wasm
} // namespace internal
} // namespace v8
#endif // V8_WASM_FUNCTION_COMPILER_H_
|
