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1 // Copyright 2015 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 #include "src/compiler/instruction-scheduler.h"
6 
7 namespace v8 {
8 namespace internal {
9 namespace compiler {
10 
SchedulerSupported()11 bool InstructionScheduler::SchedulerSupported() { return true; }
12 
GetTargetInstructionFlags(const Instruction * instr) const13 int InstructionScheduler::GetTargetInstructionFlags(
14     const Instruction* instr) const {
15   switch (instr->arch_opcode()) {
16     case kS390_And32:
17     case kS390_And64:
18     case kS390_Or32:
19     case kS390_Or64:
20     case kS390_Xor32:
21     case kS390_Xor64:
22     case kS390_ShiftLeft32:
23     case kS390_ShiftLeft64:
24     case kS390_ShiftLeftPair:
25     case kS390_ShiftRight32:
26     case kS390_ShiftRight64:
27     case kS390_ShiftRightPair:
28     case kS390_ShiftRightArith32:
29     case kS390_ShiftRightArith64:
30     case kS390_ShiftRightArithPair:
31     case kS390_RotRight32:
32     case kS390_RotRight64:
33     case kS390_Not32:
34     case kS390_Not64:
35     case kS390_RotLeftAndMask32:
36     case kS390_RotLeftAndClear64:
37     case kS390_RotLeftAndClearLeft64:
38     case kS390_RotLeftAndClearRight64:
39     case kS390_Add32:
40     case kS390_Add64:
41     case kS390_AddPair:
42     case kS390_AddFloat:
43     case kS390_AddDouble:
44     case kS390_Sub32:
45     case kS390_Sub64:
46     case kS390_SubPair:
47     case kS390_MulPair:
48     case kS390_SubFloat:
49     case kS390_SubDouble:
50     case kS390_Mul32:
51     case kS390_Mul32WithHigh32:
52     case kS390_Mul64:
53     case kS390_MulHigh32:
54     case kS390_MulHighU32:
55     case kS390_MulFloat:
56     case kS390_MulDouble:
57     case kS390_Div32:
58     case kS390_Div64:
59     case kS390_DivU32:
60     case kS390_DivU64:
61     case kS390_DivFloat:
62     case kS390_DivDouble:
63     case kS390_Mod32:
64     case kS390_Mod64:
65     case kS390_ModU32:
66     case kS390_ModU64:
67     case kS390_ModDouble:
68     case kS390_Neg32:
69     case kS390_Neg64:
70     case kS390_NegDouble:
71     case kS390_NegFloat:
72     case kS390_SqrtFloat:
73     case kS390_FloorFloat:
74     case kS390_CeilFloat:
75     case kS390_TruncateFloat:
76     case kS390_AbsFloat:
77     case kS390_SqrtDouble:
78     case kS390_FloorDouble:
79     case kS390_CeilDouble:
80     case kS390_TruncateDouble:
81     case kS390_RoundDouble:
82     case kS390_MaxFloat:
83     case kS390_MaxDouble:
84     case kS390_MinFloat:
85     case kS390_MinDouble:
86     case kS390_AbsDouble:
87     case kS390_Cntlz32:
88     case kS390_Cntlz64:
89     case kS390_Popcnt32:
90     case kS390_Popcnt64:
91     case kS390_Cmp32:
92     case kS390_Cmp64:
93     case kS390_CmpFloat:
94     case kS390_CmpDouble:
95     case kS390_Tst32:
96     case kS390_Tst64:
97     case kS390_ExtendSignWord8:
98     case kS390_ExtendSignWord16:
99     case kS390_ExtendSignWord32:
100     case kS390_Uint32ToUint64:
101     case kS390_Int64ToInt32:
102     case kS390_Int64ToFloat32:
103     case kS390_Int64ToDouble:
104     case kS390_Uint64ToFloat32:
105     case kS390_Uint64ToDouble:
106     case kS390_Int32ToFloat32:
107     case kS390_Int32ToDouble:
108     case kS390_Uint32ToFloat32:
109     case kS390_Uint32ToDouble:
110     case kS390_Float32ToInt32:
111     case kS390_Float32ToUint32:
112     case kS390_Float32ToUint64:
113     case kS390_Float32ToDouble:
114     case kS390_Float64SilenceNaN:
115     case kS390_DoubleToInt32:
116     case kS390_DoubleToUint32:
117     case kS390_Float32ToInt64:
118     case kS390_DoubleToInt64:
119     case kS390_DoubleToUint64:
120     case kS390_DoubleToFloat32:
121     case kS390_DoubleExtractLowWord32:
122     case kS390_DoubleExtractHighWord32:
123     case kS390_DoubleInsertLowWord32:
124     case kS390_DoubleInsertHighWord32:
125     case kS390_DoubleConstruct:
126     case kS390_BitcastInt32ToFloat32:
127     case kS390_BitcastFloat32ToInt32:
128     case kS390_BitcastInt64ToDouble:
129     case kS390_BitcastDoubleToInt64:
130     case kS390_LoadReverse16RR:
131     case kS390_LoadReverse32RR:
132     case kS390_LoadReverse64RR:
133       return kNoOpcodeFlags;
134 
135     case kS390_LoadWordS8:
136     case kS390_LoadWordU8:
137     case kS390_LoadWordS16:
138     case kS390_LoadWordU16:
139     case kS390_LoadWordS32:
140     case kS390_LoadWordU32:
141     case kS390_LoadWord64:
142     case kS390_LoadFloat32:
143     case kS390_LoadDouble:
144     case kS390_LoadReverse16:
145     case kS390_LoadReverse32:
146     case kS390_LoadReverse64:
147       return kIsLoadOperation;
148 
149     case kS390_StoreWord8:
150     case kS390_StoreWord16:
151     case kS390_StoreWord32:
152     case kS390_StoreWord64:
153     case kS390_StoreReverse16:
154     case kS390_StoreReverse32:
155     case kS390_StoreReverse64:
156     case kS390_StoreFloat32:
157     case kS390_StoreDouble:
158     case kS390_Push:
159     case kS390_PushFrame:
160     case kS390_StoreToStackSlot:
161       return kHasSideEffect;
162 
163 #define CASE(Name) case k##Name:
164       COMMON_ARCH_OPCODE_LIST(CASE)
165 #undef CASE
166       // Already covered in architecture independent code.
167       UNREACHABLE();
168   }
169 
170   UNREACHABLE();
171   return kNoOpcodeFlags;
172 }
173 
GetInstructionLatency(const Instruction * instr)174 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
175   // TODO(all): Add instruction cost modeling.
176   return 1;
177 }
178 
179 }  // namespace compiler
180 }  // namespace internal
181 }  // namespace v8
182