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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 
     14 int InstructionScheduler::GetTargetInstructionFlags(
     15     const Instruction* instr) const {
     16   switch (instr->arch_opcode()) {
     17     case kPPC_And:
     18     case kPPC_AndComplement:
     19     case kPPC_Or:
     20     case kPPC_OrComplement:
     21     case kPPC_Xor:
     22     case kPPC_ShiftLeft32:
     23     case kPPC_ShiftLeft64:
     24     case kPPC_ShiftRight32:
     25     case kPPC_ShiftRight64:
     26     case kPPC_ShiftRightAlg32:
     27     case kPPC_ShiftRightAlg64:
     28     case kPPC_RotRight32:
     29     case kPPC_RotRight64:
     30     case kPPC_Not:
     31     case kPPC_RotLeftAndMask32:
     32     case kPPC_RotLeftAndClear64:
     33     case kPPC_RotLeftAndClearLeft64:
     34     case kPPC_RotLeftAndClearRight64:
     35     case kPPC_Add:
     36     case kPPC_AddWithOverflow32:
     37     case kPPC_AddDouble:
     38     case kPPC_Sub:
     39     case kPPC_SubWithOverflow32:
     40     case kPPC_SubDouble:
     41     case kPPC_Mul32:
     42     case kPPC_Mul64:
     43     case kPPC_MulHigh32:
     44     case kPPC_MulHighU32:
     45     case kPPC_MulDouble:
     46     case kPPC_Div32:
     47     case kPPC_Div64:
     48     case kPPC_DivU32:
     49     case kPPC_DivU64:
     50     case kPPC_DivDouble:
     51     case kPPC_Mod32:
     52     case kPPC_Mod64:
     53     case kPPC_ModU32:
     54     case kPPC_ModU64:
     55     case kPPC_ModDouble:
     56     case kPPC_Neg:
     57     case kPPC_NegDouble:
     58     case kPPC_SqrtDouble:
     59     case kPPC_FloorDouble:
     60     case kPPC_CeilDouble:
     61     case kPPC_TruncateDouble:
     62     case kPPC_RoundDouble:
     63     case kPPC_MaxDouble:
     64     case kPPC_MinDouble:
     65     case kPPC_AbsDouble:
     66     case kPPC_Cntlz32:
     67     case kPPC_Cntlz64:
     68     case kPPC_Popcnt32:
     69     case kPPC_Popcnt64:
     70     case kPPC_Cmp32:
     71     case kPPC_Cmp64:
     72     case kPPC_CmpDouble:
     73     case kPPC_Tst32:
     74     case kPPC_Tst64:
     75     case kPPC_ExtendSignWord8:
     76     case kPPC_ExtendSignWord16:
     77     case kPPC_ExtendSignWord32:
     78     case kPPC_Uint32ToUint64:
     79     case kPPC_Int64ToInt32:
     80     case kPPC_Int64ToFloat32:
     81     case kPPC_Int64ToDouble:
     82     case kPPC_Uint64ToFloat32:
     83     case kPPC_Uint64ToDouble:
     84     case kPPC_Int32ToDouble:
     85     case kPPC_Uint32ToDouble:
     86     case kPPC_Float32ToDouble:
     87     case kPPC_DoubleToInt32:
     88     case kPPC_DoubleToUint32:
     89     case kPPC_DoubleToInt64:
     90     case kPPC_DoubleToUint64:
     91     case kPPC_DoubleToFloat32:
     92     case kPPC_DoubleExtractLowWord32:
     93     case kPPC_DoubleExtractHighWord32:
     94     case kPPC_DoubleInsertLowWord32:
     95     case kPPC_DoubleInsertHighWord32:
     96     case kPPC_DoubleConstruct:
     97     case kPPC_BitcastInt32ToFloat32:
     98     case kPPC_BitcastFloat32ToInt32:
     99     case kPPC_BitcastInt64ToDouble:
    100     case kPPC_BitcastDoubleToInt64:
    101       return kNoOpcodeFlags;
    102 
    103     case kPPC_LoadWordS8:
    104     case kPPC_LoadWordU8:
    105     case kPPC_LoadWordS16:
    106     case kPPC_LoadWordU16:
    107     case kPPC_LoadWordS32:
    108     case kPPC_LoadWord64:
    109     case kPPC_LoadFloat32:
    110     case kPPC_LoadDouble:
    111       return kIsLoadOperation;
    112 
    113     case kPPC_StoreWord8:
    114     case kPPC_StoreWord16:
    115     case kPPC_StoreWord32:
    116     case kPPC_StoreWord64:
    117     case kPPC_StoreFloat32:
    118     case kPPC_StoreDouble:
    119     case kPPC_Push:
    120     case kPPC_PushFrame:
    121     case kPPC_StoreToStackSlot:
    122       return kHasSideEffect;
    123 
    124 #define CASE(Name) case k##Name:
    125     COMMON_ARCH_OPCODE_LIST(CASE)
    126 #undef CASE
    127       // Already covered in architecture independent code.
    128       UNREACHABLE();
    129   }
    130 
    131   UNREACHABLE();
    132   return kNoOpcodeFlags;
    133 }
    134 
    135 
    136 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
    137   // TODO(all): Add instruction cost modeling.
    138   return 1;
    139 }
    140 
    141 }  // namespace compiler
    142 }  // namespace internal
    143 }  // namespace v8
    144