1 /*
2  * Copyright (C) 2011 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_COMPILER_DEX_FRONTEND_H_
18 #define ART_COMPILER_DEX_FRONTEND_H_
19 
20 #include "dex_file.h"
21 #include "invoke_type.h"
22 
23 namespace llvm {
24   class Module;
25   class LLVMContext;
26 }
27 
28 namespace art {
29 namespace llvm {
30   class IntrinsicHelper;
31   class IRBuilder;
32 }
33 
34 /*
35  * Assembly is an iterative process, and usually terminates within
36  * two or three passes.  This should be high enough to handle bizarre
37  * cases, but detect an infinite loop bug.
38  */
39 #define MAX_ASSEMBLER_RETRIES 50
40 
41 // Suppress optimization if corresponding bit set.
42 enum opt_control_vector {
43   kLoadStoreElimination = 0,
44   kLoadHoisting,
45   kSuppressLoads,
46   kNullCheckElimination,
47   kClassInitCheckElimination,
48   kGlobalValueNumbering,
49   kPromoteRegs,
50   kTrackLiveTemps,
51   kSafeOptimizations,
52   kBBOpt,
53   kMatch,
54   kPromoteCompilerTemps,
55   kBranchFusing,
56   kSuppressExceptionEdges,
57   kSuppressMethodInlining,
58 };
59 
60 // Force code generation paths for testing.
61 enum debugControlVector {
62   kDebugVerbose,
63   kDebugDumpCFG,
64   kDebugSlowFieldPath,
65   kDebugSlowInvokePath,
66   kDebugSlowStringPath,
67   kDebugSlowTypePath,
68   kDebugSlowestFieldPath,
69   kDebugSlowestStringPath,
70   kDebugExerciseResolveMethod,
71   kDebugVerifyDataflow,
72   kDebugShowMemoryUsage,
73   kDebugShowNops,
74   kDebugCountOpcodes,
75   kDebugDumpCheckStats,
76   kDebugDumpBitcodeFile,
77   kDebugVerifyBitcode,
78   kDebugShowSummaryMemoryUsage,
79   kDebugShowFilterStats,
80   kDebugTimings,
81   kDebugCodegenDump
82 };
83 
84 class LLVMInfo {
85   public:
86     LLVMInfo();
87     ~LLVMInfo();
88 
GetLLVMContext()89     ::llvm::LLVMContext* GetLLVMContext() {
90       return llvm_context_.get();
91     }
92 
GetLLVMModule()93     ::llvm::Module* GetLLVMModule() {
94       return llvm_module_;
95     }
96 
GetIntrinsicHelper()97     art::llvm::IntrinsicHelper* GetIntrinsicHelper() {
98       return intrinsic_helper_.get();
99     }
100 
GetIRBuilder()101     art::llvm::IRBuilder* GetIRBuilder() {
102       return ir_builder_.get();
103     }
104 
105   private:
106     std::unique_ptr< ::llvm::LLVMContext> llvm_context_;
107     ::llvm::Module* llvm_module_;  // Managed by context_.
108     std::unique_ptr<art::llvm::IntrinsicHelper> intrinsic_helper_;
109     std::unique_ptr<art::llvm::IRBuilder> ir_builder_;
110 };
111 
112 class CompiledMethod;
113 class CompilerDriver;
114 
115 }  // namespace art
116 
117 extern "C" art::CompiledMethod* ArtCompileMethod(art::CompilerDriver& driver,
118                                                  const art::DexFile::CodeItem* code_item,
119                                                  uint32_t access_flags,
120                                                  art::InvokeType invoke_type,
121                                                  uint16_t class_def_idx,
122                                                  uint32_t method_idx,
123                                                  jobject class_loader,
124                                                  const art::DexFile& dex_file);
125 
126 
127 
128 #endif  // ART_COMPILER_DEX_FRONTEND_H_
129