codegen_mips.h revision 832336b3c9eb892045a8de1bb12c9361112ca3c5 
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_QUICK_MIPS_CODEGEN_MIPS_H_
18#define ART_COMPILER_DEX_QUICK_MIPS_CODEGEN_MIPS_H_
19
20#include "dex/compiler_internals.h"
21#include "dex/quick/mir_to_lir.h"
22#include "mips_lir.h"
23
24namespace art {
25
26class MipsMir2Lir FINAL : public Mir2Lir {
27  public:
28    MipsMir2Lir(CompilationUnit* cu, MIRGraph* mir_graph, ArenaAllocator* arena);
29
30    // Required for target - codegen utilities.
31    bool SmallLiteralDivRem(Instruction::Code dalvik_opcode, bool is_div, RegLocation rl_src,
32                            RegLocation rl_dest, int lit);
33    bool EasyMultiply(RegLocation rl_src, RegLocation rl_dest, int lit) OVERRIDE;
34    LIR* CheckSuspendUsingLoad() OVERRIDE;
35    RegStorage LoadHelper(QuickEntrypointEnum trampoline) OVERRIDE;
36    LIR* LoadBaseDisp(RegStorage r_base, int displacement, RegStorage r_dest,
37                      OpSize size, VolatileKind is_volatile) OVERRIDE;
38    LIR* LoadBaseIndexed(RegStorage r_base, RegStorage r_index, RegStorage r_dest, int scale,
39                         OpSize size) OVERRIDE;
40    LIR* LoadConstantNoClobber(RegStorage r_dest, int value);
41    LIR* LoadConstantWide(RegStorage r_dest, int64_t value);
42    LIR* StoreBaseDisp(RegStorage r_base, int displacement, RegStorage r_src,
43                       OpSize size, VolatileKind is_volatile) OVERRIDE;
44    LIR* StoreBaseIndexed(RegStorage r_base, RegStorage r_index, RegStorage r_src, int scale,
45                          OpSize size) OVERRIDE;
46    LIR* GenAtomic64Load(RegStorage r_base, int displacement, RegStorage r_dest);
47    LIR* GenAtomic64Store(RegStorage r_base, int displacement, RegStorage r_src);
48    void MarkGCCard(RegStorage val_reg, RegStorage tgt_addr_reg);
49
50    // Required for target - register utilities.
51    RegStorage Solo64ToPair64(RegStorage reg);
52    RegStorage TargetReg(SpecialTargetRegister reg);
53    RegStorage GetArgMappingToPhysicalReg(int arg_num);
54    RegLocation GetReturnAlt();
55    RegLocation GetReturnWideAlt();
56    RegLocation LocCReturn();
57    RegLocation LocCReturnRef();
58    RegLocation LocCReturnDouble();
59    RegLocation LocCReturnFloat();
60    RegLocation LocCReturnWide();
61    ResourceMask GetRegMaskCommon(const RegStorage& reg) const OVERRIDE;
62    void AdjustSpillMask();
63    void ClobberCallerSave();
64    void FreeCallTemps();
65    void LockCallTemps();
66    void CompilerInitializeRegAlloc();
67
68    // Required for target - miscellaneous.
69    void AssembleLIR();
70    int AssignInsnOffsets();
71    void AssignOffsets();
72    AssemblerStatus AssembleInstructions(CodeOffset start_addr);
73    void DumpResourceMask(LIR* lir, const ResourceMask& mask, const char* prefix) OVERRIDE;
74    void SetupTargetResourceMasks(LIR* lir, uint64_t flags,
75                                  ResourceMask* use_mask, ResourceMask* def_mask) OVERRIDE;
76    const char* GetTargetInstFmt(int opcode);
77    const char* GetTargetInstName(int opcode);
78    std::string BuildInsnString(const char* fmt, LIR* lir, unsigned char* base_addr);
79    ResourceMask GetPCUseDefEncoding() const OVERRIDE;
80    uint64_t GetTargetInstFlags(int opcode);
81    size_t GetInsnSize(LIR* lir) OVERRIDE;
82    bool IsUnconditionalBranch(LIR* lir);
83
84    // Get the register class for load/store of a field.
85    RegisterClass RegClassForFieldLoadStore(OpSize size, bool is_volatile) OVERRIDE;
86
87    // Required for target - Dalvik-level generators.
88    void GenArithImmOpLong(Instruction::Code opcode, RegLocation rl_dest,
89                           RegLocation rl_src1, RegLocation rl_src2);
90    void GenArrayGet(int opt_flags, OpSize size, RegLocation rl_array,
91                     RegLocation rl_index, RegLocation rl_dest, int scale);
92    void GenArrayPut(int opt_flags, OpSize size, RegLocation rl_array,
93                     RegLocation rl_index, RegLocation rl_src, int scale, bool card_mark);
94    void GenShiftImmOpLong(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
95                           RegLocation rl_shift);
96    void GenArithOpDouble(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
97                          RegLocation rl_src2);
98    void GenArithOpFloat(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
99                         RegLocation rl_src2);
100    void GenCmpFP(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
101                  RegLocation rl_src2);
102    void GenConversion(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src);
103    bool GenInlinedAbsFloat(CallInfo* info) OVERRIDE;
104    bool GenInlinedAbsDouble(CallInfo* info) OVERRIDE;
105    bool GenInlinedCas(CallInfo* info, bool is_long, bool is_object);
106    bool GenInlinedMinMax(CallInfo* info, bool is_min, bool is_long);
107    bool GenInlinedSqrt(CallInfo* info);
108    bool GenInlinedPeek(CallInfo* info, OpSize size);
109    bool GenInlinedPoke(CallInfo* info, OpSize size);
110    void GenArithOpLong(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
111                        RegLocation rl_src2) OVERRIDE;
112    RegLocation GenDivRem(RegLocation rl_dest, RegStorage reg_lo, RegStorage reg_hi, bool is_div);
113    RegLocation GenDivRemLit(RegLocation rl_dest, RegStorage reg_lo, int lit, bool is_div);
114    void GenCmpLong(RegLocation rl_dest, RegLocation rl_src1, RegLocation rl_src2);
115    void GenDivZeroCheckWide(RegStorage reg);
116    void GenEntrySequence(RegLocation* ArgLocs, RegLocation rl_method);
117    void GenExitSequence();
118    void GenSpecialExitSequence();
119    void GenFusedFPCmpBranch(BasicBlock* bb, MIR* mir, bool gt_bias, bool is_double);
120    void GenFusedLongCmpBranch(BasicBlock* bb, MIR* mir);
121    void GenSelect(BasicBlock* bb, MIR* mir);
122    void GenSelectConst32(RegStorage left_op, RegStorage right_op, ConditionCode code,
123                          int32_t true_val, int32_t false_val, RegStorage rs_dest,
124                          int dest_reg_class) OVERRIDE;
125    bool GenMemBarrier(MemBarrierKind barrier_kind);
126    void GenMoveException(RegLocation rl_dest);
127    void GenMultiplyByTwoBitMultiplier(RegLocation rl_src, RegLocation rl_result, int lit,
128                                       int first_bit, int second_bit);
129    void GenNegDouble(RegLocation rl_dest, RegLocation rl_src);
130    void GenNegFloat(RegLocation rl_dest, RegLocation rl_src);
131    void GenLargePackedSwitch(MIR* mir, uint32_t table_offset, RegLocation rl_src);
132    void GenLargeSparseSwitch(MIR* mir, uint32_t table_offset, RegLocation rl_src);
133    bool GenSpecialCase(BasicBlock* bb, MIR* mir, const InlineMethod& special);
134
135    // Required for target - single operation generators.
136    LIR* OpUnconditionalBranch(LIR* target);
137    LIR* OpCmpBranch(ConditionCode cond, RegStorage src1, RegStorage src2, LIR* target);
138    LIR* OpCmpImmBranch(ConditionCode cond, RegStorage reg, int check_value, LIR* target);
139    LIR* OpCondBranch(ConditionCode cc, LIR* target);
140    LIR* OpDecAndBranch(ConditionCode c_code, RegStorage reg, LIR* target);
141    LIR* OpFpRegCopy(RegStorage r_dest, RegStorage r_src);
142    LIR* OpIT(ConditionCode cond, const char* guide);
143    void OpEndIT(LIR* it);
144    LIR* OpMem(OpKind op, RegStorage r_base, int disp);
145    LIR* OpPcRelLoad(RegStorage reg, LIR* target);
146    LIR* OpReg(OpKind op, RegStorage r_dest_src);
147    void OpRegCopy(RegStorage r_dest, RegStorage r_src);
148    LIR* OpRegCopyNoInsert(RegStorage r_dest, RegStorage r_src);
149    LIR* OpRegImm(OpKind op, RegStorage r_dest_src1, int value);
150    LIR* OpRegReg(OpKind op, RegStorage r_dest_src1, RegStorage r_src2);
151    LIR* OpMovRegMem(RegStorage r_dest, RegStorage r_base, int offset, MoveType move_type);
152    LIR* OpMovMemReg(RegStorage r_base, int offset, RegStorage r_src, MoveType move_type);
153    LIR* OpCondRegReg(OpKind op, ConditionCode cc, RegStorage r_dest, RegStorage r_src);
154    LIR* OpRegRegImm(OpKind op, RegStorage r_dest, RegStorage r_src1, int value);
155    LIR* OpRegRegReg(OpKind op, RegStorage r_dest, RegStorage r_src1, RegStorage r_src2);
156    LIR* OpTestSuspend(LIR* target);
157    LIR* OpVldm(RegStorage r_base, int count);
158    LIR* OpVstm(RegStorage r_base, int count);
159    void OpRegCopyWide(RegStorage dest, RegStorage src);
160
161    // TODO: collapse r_dest.
162    LIR* LoadBaseDispBody(RegStorage r_base, int displacement, RegStorage r_dest,
163                          OpSize size);
164    // TODO: collapse r_src.
165    LIR* StoreBaseDispBody(RegStorage r_base, int displacement, RegStorage r_src,
166                           OpSize size);
167    void SpillCoreRegs();
168    void UnSpillCoreRegs();
169    static const MipsEncodingMap EncodingMap[kMipsLast];
170    bool InexpensiveConstantInt(int32_t value);
171    bool InexpensiveConstantFloat(int32_t value);
172    bool InexpensiveConstantLong(int64_t value);
173    bool InexpensiveConstantDouble(int64_t value);
174
175    bool WideGPRsAreAliases() OVERRIDE {
176      return false;  // Wide GPRs are formed by pairing.
177    }
178    bool WideFPRsAreAliases() OVERRIDE {
179      return false;  // Wide FPRs are formed by pairing.
180    }
181
182    LIR* InvokeTrampoline(OpKind op, RegStorage r_tgt, QuickEntrypointEnum trampoline) OVERRIDE;
183
184  private:
185    void GenNegLong(RegLocation rl_dest, RegLocation rl_src);
186    void GenAddLong(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
187                    RegLocation rl_src2);
188    void GenSubLong(Instruction::Code opcode, RegLocation rl_dest, RegLocation rl_src1,
189                    RegLocation rl_src2);
190
191    void ConvertShortToLongBranch(LIR* lir);
192    RegLocation GenDivRem(RegLocation rl_dest, RegLocation rl_src1,
193                          RegLocation rl_src2, bool is_div, bool check_zero);
194    RegLocation GenDivRemLit(RegLocation rl_dest, RegLocation rl_src1, int lit, bool is_div);
195};
196
197}  // namespace art
198
199#endif  // ART_COMPILER_DEX_QUICK_MIPS_CODEGEN_MIPS_H_
200