nodes_x86.h revision dc00454f0b9a134f01f79b419200f4044c2af5c6 
1/*
2 * Copyright (C) 2015 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_OPTIMIZING_NODES_X86_H_
18#define ART_COMPILER_OPTIMIZING_NODES_X86_H_
19
20namespace art {
21
22// Compute the address of the method for X86 Constant area support.
23class HX86ComputeBaseMethodAddress : public HExpression<0> {
24 public:
25  // Treat the value as an int32_t, but it is really a 32 bit native pointer.
26  HX86ComputeBaseMethodAddress()
27      : HExpression(Primitive::kPrimInt, SideEffects::None(), kNoDexPc) {}
28
29  DECLARE_INSTRUCTION(X86ComputeBaseMethodAddress);
30
31 private:
32  DISALLOW_COPY_AND_ASSIGN(HX86ComputeBaseMethodAddress);
33};
34
35// Load a constant value from the constant table.
36class HX86LoadFromConstantTable : public HExpression<2> {
37 public:
38  HX86LoadFromConstantTable(HX86ComputeBaseMethodAddress* method_base,
39                            HConstant* constant,
40                            bool needs_materialization = true)
41      : HExpression(constant->GetType(), SideEffects::None(), kNoDexPc),
42        needs_materialization_(needs_materialization) {
43    SetRawInputAt(0, method_base);
44    SetRawInputAt(1, constant);
45  }
46
47  bool NeedsMaterialization() const { return needs_materialization_; }
48
49  HX86ComputeBaseMethodAddress* GetBaseMethodAddress() const {
50    return InputAt(0)->AsX86ComputeBaseMethodAddress();
51  }
52
53  HConstant* GetConstant() const {
54    return InputAt(1)->AsConstant();
55  }
56
57  DECLARE_INSTRUCTION(X86LoadFromConstantTable);
58
59 private:
60  const bool needs_materialization_;
61
62  DISALLOW_COPY_AND_ASSIGN(HX86LoadFromConstantTable);
63};
64
65// Version of HNeg with access to the constant table for FP types.
66class HX86FPNeg : public HExpression<2> {
67 public:
68  HX86FPNeg(Primitive::Type result_type,
69            HInstruction* input,
70            HX86ComputeBaseMethodAddress* method_base,
71            uint32_t dex_pc)
72      : HExpression(result_type, SideEffects::None(), dex_pc) {
73    DCHECK(Primitive::IsFloatingPointType(result_type));
74    SetRawInputAt(0, input);
75    SetRawInputAt(1, method_base);
76  }
77
78  DECLARE_INSTRUCTION(X86FPNeg);
79
80 private:
81  DISALLOW_COPY_AND_ASSIGN(HX86FPNeg);
82};
83
84// X86 version of HPackedSwitch that holds a pointer to the base method address.
85class HX86PackedSwitch : public HTemplateInstruction<2> {
86 public:
87  HX86PackedSwitch(int32_t start_value,
88                   int32_t num_entries,
89                   HInstruction* input,
90                   HX86ComputeBaseMethodAddress* method_base,
91                   uint32_t dex_pc)
92    : HTemplateInstruction(SideEffects::None(), dex_pc),
93      start_value_(start_value),
94      num_entries_(num_entries) {
95    SetRawInputAt(0, input);
96    SetRawInputAt(1, method_base);
97  }
98
99  bool IsControlFlow() const OVERRIDE { return true; }
100
101  int32_t GetStartValue() const { return start_value_; }
102
103  int32_t GetNumEntries() const { return num_entries_; }
104
105  HX86ComputeBaseMethodAddress* GetBaseMethodAddress() const {
106    return InputAt(1)->AsX86ComputeBaseMethodAddress();
107  }
108
109  HBasicBlock* GetDefaultBlock() const {
110    // Last entry is the default block.
111    return GetBlock()->GetSuccessors()[num_entries_];
112  }
113
114  DECLARE_INSTRUCTION(X86PackedSwitch);
115
116 private:
117  const int32_t start_value_;
118  const int32_t num_entries_;
119
120  DISALLOW_COPY_AND_ASSIGN(HX86PackedSwitch);
121};
122
123}  // namespace art
124
125#endif  // ART_COMPILER_OPTIMIZING_NODES_X86_H_
126