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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/compiler/operator-properties.h"
#include "src/compiler/js-operator.h"
#include "src/compiler/linkage.h"
#include "src/compiler/opcodes.h"
namespace v8 {
namespace internal {
namespace compiler {
// static
bool OperatorProperties::HasContextInput(const Operator* op) {
IrOpcode::Value opcode = static_cast<IrOpcode::Value>(op->opcode());
return IrOpcode::IsJsOpcode(opcode);
}
// static
bool OperatorProperties::HasFrameStateInput(const Operator* op) {
if (!FLAG_turbo_deoptimization) {
return false;
}
switch (op->opcode()) {
case IrOpcode::kFrameState:
return true;
case IrOpcode::kJSCallRuntime: {
const CallRuntimeParameters& p = CallRuntimeParametersOf(op);
return Linkage::NeedsFrameState(p.id());
}
// Strict equality cannot lazily deoptimize.
case IrOpcode::kJSStrictEqual:
case IrOpcode::kJSStrictNotEqual:
return false;
// Calls
case IrOpcode::kJSCallFunction:
case IrOpcode::kJSCallConstruct:
// Compare operations
case IrOpcode::kJSEqual:
case IrOpcode::kJSGreaterThan:
case IrOpcode::kJSGreaterThanOrEqual:
case IrOpcode::kJSHasProperty:
case IrOpcode::kJSInstanceOf:
case IrOpcode::kJSLessThan:
case IrOpcode::kJSLessThanOrEqual:
case IrOpcode::kJSNotEqual:
// Binary operations
case IrOpcode::kJSAdd:
case IrOpcode::kJSBitwiseAnd:
case IrOpcode::kJSBitwiseOr:
case IrOpcode::kJSBitwiseXor:
case IrOpcode::kJSDivide:
case IrOpcode::kJSLoadNamed:
case IrOpcode::kJSLoadProperty:
case IrOpcode::kJSModulus:
case IrOpcode::kJSMultiply:
case IrOpcode::kJSShiftLeft:
case IrOpcode::kJSShiftRight:
case IrOpcode::kJSShiftRightLogical:
case IrOpcode::kJSStoreNamed:
case IrOpcode::kJSStoreProperty:
case IrOpcode::kJSSubtract:
// Conversions
case IrOpcode::kJSToObject:
// Other
case IrOpcode::kJSDeleteProperty:
return true;
default:
return false;
}
}
// static
int OperatorProperties::GetTotalInputCount(const Operator* op) {
return op->ValueInputCount() + GetContextInputCount(op) +
GetFrameStateInputCount(op) + op->EffectInputCount() +
op->ControlInputCount();
}
// static
bool OperatorProperties::IsBasicBlockBegin(const Operator* op) {
Operator::Opcode const opcode = op->opcode();
return opcode == IrOpcode::kStart || opcode == IrOpcode::kEnd ||
opcode == IrOpcode::kDead || opcode == IrOpcode::kLoop ||
opcode == IrOpcode::kMerge || opcode == IrOpcode::kIfTrue ||
opcode == IrOpcode::kIfFalse;
}
} // namespace compiler
} // namespace internal
} // namespace v8
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