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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 
     11 bool InstructionScheduler::SchedulerSupported() { return true; }
     12 
     13 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_RotLeftAndClear64:
     36     case kS390_RotLeftAndClearLeft64:
     37     case kS390_RotLeftAndClearRight64:
     38     case kS390_Lay:
     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_Mul32WithOverflow:
     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     case kS390_LoadAndTestWord32:
    134     case kS390_LoadAndTestWord64:
    135     case kS390_LoadAndTestFloat32:
    136     case kS390_LoadAndTestFloat64:
    137       return kNoOpcodeFlags;
    138 
    139     case kS390_LoadWordS8:
    140     case kS390_LoadWordU8:
    141     case kS390_LoadWordS16:
    142     case kS390_LoadWordU16:
    143     case kS390_LoadWordS32:
    144     case kS390_LoadWordU32:
    145     case kS390_LoadWord64:
    146     case kS390_LoadFloat32:
    147     case kS390_LoadDouble:
    148     case kS390_LoadReverse16:
    149     case kS390_LoadReverse32:
    150     case kS390_LoadReverse64:
    151       return kIsLoadOperation;
    152 
    153     case kS390_StoreWord8:
    154     case kS390_StoreWord16:
    155     case kS390_StoreWord32:
    156     case kS390_StoreWord64:
    157     case kS390_StoreReverse16:
    158     case kS390_StoreReverse32:
    159     case kS390_StoreReverse64:
    160     case kS390_StoreFloat32:
    161     case kS390_StoreDouble:
    162     case kS390_Push:
    163     case kS390_PushFrame:
    164     case kS390_StoreToStackSlot:
    165       return kHasSideEffect;
    166 
    167 #define CASE(Name) case k##Name:
    168       COMMON_ARCH_OPCODE_LIST(CASE)
    169 #undef CASE
    170       // Already covered in architecture independent code.
    171       UNREACHABLE();
    172   }
    173 
    174   UNREACHABLE();
    175   return kNoOpcodeFlags;
    176 }
    177 
    178 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
    179   // TODO(all): Add instruction cost modeling.
    180   return 1;
    181 }
    182 
    183 }  // namespace compiler
    184 }  // namespace internal
    185 }  // namespace v8
    186