deps/v8/src/compiler/operator-properties.cc

   1 // Copyright 2014 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/operator-properties.h"
   6
   7 #include "src/compiler/js-operator.h"
   8 #include "src/compiler/linkage.h"
   9 #include "src/compiler/opcodes.h"
  10
  11 namespace v8 {
  12 namespace internal {
  13 namespace compiler {
  14
  15 // static
  16 bool OperatorProperties::HasContextInput(const Operator* op) {
  17   IrOpcode::Value opcode = static_cast<IrOpcode::Value>(op->opcode());
  18   return IrOpcode::IsJsOpcode(opcode);
  19 }
  20
  21
  22 // static
  23 bool OperatorProperties::HasFrameStateInput(const Operator* op) {
  24   if (!FLAG_turbo_deoptimization) {
  25     return false;
  26   }
  27   switch (op->opcode()) {
  28     case IrOpcode::kFrameState:
  29       return true;
  30     case IrOpcode::kJSCallRuntime: {
  31       const CallRuntimeParameters& p = CallRuntimeParametersOf(op);
  32       return Linkage::NeedsFrameState(p.id());
  33     }
  34
  35     // Strict equality cannot lazily deoptimize.
  36     case IrOpcode::kJSStrictEqual:
  37     case IrOpcode::kJSStrictNotEqual:
  38       return false;
  39
  40     // Calls
  41     case IrOpcode::kJSCallFunction:
  42     case IrOpcode::kJSCallConstruct:
  43
  44     // Compare operations
  45     case IrOpcode::kJSEqual:
  46     case IrOpcode::kJSGreaterThan:
  47     case IrOpcode::kJSGreaterThanOrEqual:
  48     case IrOpcode::kJSHasProperty:
  49     case IrOpcode::kJSInstanceOf:
  50     case IrOpcode::kJSLessThan:
  51     case IrOpcode::kJSLessThanOrEqual:
  52     case IrOpcode::kJSNotEqual:
  53
  54     // Binary operations
  55     case IrOpcode::kJSAdd:
  56     case IrOpcode::kJSBitwiseAnd:
  57     case IrOpcode::kJSBitwiseOr:
  58     case IrOpcode::kJSBitwiseXor:
  59     case IrOpcode::kJSDivide:
  60     case IrOpcode::kJSModulus:
  61     case IrOpcode::kJSMultiply:
  62     case IrOpcode::kJSShiftLeft:
  63     case IrOpcode::kJSShiftRight:
  64     case IrOpcode::kJSShiftRightLogical:
  65     case IrOpcode::kJSSubtract:
  66
  67     // Context operations
  68     case IrOpcode::kJSCreateWithContext:
  69
  70     // Conversions
  71     case IrOpcode::kJSToObject:
  72     case IrOpcode::kJSToNumber:
  73     case IrOpcode::kJSToName:
  74
  75     // Properties
  76     case IrOpcode::kJSLoadNamed:
  77     case IrOpcode::kJSLoadProperty:
  78     case IrOpcode::kJSStoreNamed:
  79     case IrOpcode::kJSStoreProperty:
  80     case IrOpcode::kJSDeleteProperty:
  81       return true;
  82
  83     default:
  84       return false;
  85   }
  86 }
  87
  88
  89 // static
  90 int OperatorProperties::GetTotalInputCount(const Operator* op) {
  91   return op->ValueInputCount() + GetContextInputCount(op) +
  92          GetFrameStateInputCount(op) + op->EffectInputCount() +
  93          op->ControlInputCount();
  94 }
  95
  96
  97 // static
  98 bool OperatorProperties::IsBasicBlockBegin(const Operator* op) {
  99   Operator::Opcode const opcode = op->opcode();
 100   return opcode == IrOpcode::kStart || opcode == IrOpcode::kEnd ||
 101          opcode == IrOpcode::kDead || opcode == IrOpcode::kLoop ||
 102          opcode == IrOpcode::kMerge || opcode == IrOpcode::kIfTrue ||
 103          opcode == IrOpcode::kIfFalse || opcode == IrOpcode::kIfValue ||
 104          opcode == IrOpcode::kIfDefault;
 105 }
 106
 107 }  // namespace compiler
 108 }  // namespace internal
 109 }  // namespace v8