Initial support for debugger frame state in Turbofan.

src/compiler/operator-properties-inl.h

 // Copyright 2013 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.
 
 #ifndef V8_COMPILER_OPERATOR_PROPERTIES_INL_H_
 #define V8_COMPILER_OPERATOR_PROPERTIES_INL_H_
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/opcodes.h"
@@ skipping 13 matching lines @@
 }
 
 inline bool OperatorProperties::HasEffectInput(Operator* op) {
   return OperatorProperties::GetEffectInputCount(op) > 0;
 }
 
 inline bool OperatorProperties::HasControlInput(Operator* op) {
   return OperatorProperties::GetControlInputCount(op) > 0;
 }
 
+inline bool OperatorProperties::HasFrameStateInput(Operator* op) {
+  if (!FLAG_turbo_deoptimization) {
+    return false;
+  }
+
+  switch (op->opcode()) {
+    case IrOpcode::kJSCallFunction:
+      return true;
+    case IrOpcode::kJSCallRuntime: {
+      Runtime::FunctionId function =
+          reinterpret_cast<Operator1<Runtime::FunctionId>*>(op)->parameter();
+      // TODO(jarin) At the moment, we only add frame state for
+      // few chosen runtime functions.
+      switch (function) {
+        case Runtime::kDebugBreak:
+        case Runtime::kDeoptimizeFunction:
+          return true;
+        default:
+          return false;
+      }
+      UNREACHABLE();
+    }
+
+    default:
+      return false;
+  }
+}
 
 inline int OperatorProperties::GetValueInputCount(Operator* op) {
   return op->InputCount();
 }
 
 inline int OperatorProperties::GetContextInputCount(Operator* op) {
   return OperatorProperties::HasContextInput(op) ? 1 : 0;
 }
 
+inline int OperatorProperties::GetFrameStateInputCount(Operator* op) {
+  return OperatorProperties::HasFrameStateInput(op) ? 1 : 0;
+}
+
 inline int OperatorProperties::GetEffectInputCount(Operator* op) {
   if (op->opcode() == IrOpcode::kEffectPhi ||
       op->opcode() == IrOpcode::kFinish) {
     return static_cast<Operator1<int>*>(op)->parameter();
   }
   if (op->HasProperty(Operator::kNoRead) && op->HasProperty(Operator::kNoWrite))
     return 0;  // no effects.
   return 1;
 }
 
@@ skipping 17 matching lines @@
       // write/read operations without consideration of control flow. Without an
       // explicit control dependency writes can be float in the schedule too
       // early along a path that shouldn't generate a side-effect.
       return op->HasProperty(Operator::kNoWrite) ? 0 : 1;
   }
   return 0;
 }
 
 inline int OperatorProperties::GetTotalInputCount(Operator* op) {
   return GetValueInputCount(op) + GetContextInputCount(op) +
-         GetEffectInputCount(op) + GetControlInputCount(op);
+         GetFrameStateInputCount(op) + GetEffectInputCount(op) +
+         GetControlInputCount(op);
 }
 
 // -----------------------------------------------------------------------------
 // Output properties.
 
 inline bool OperatorProperties::HasValueOutput(Operator* op) {
   return GetValueOutputCount(op) > 0;
 }
 
 inline bool OperatorProperties::HasEffectOutput(Operator* op) {
@@ skipping 44 matching lines @@
   switch (op->opcode()) {
     case IrOpcode::kCall: {
       CallOperator* call_op = reinterpret_cast<CallOperator*>(op);
       CallDescriptor* descriptor = call_op->parameter();
       return descriptor->CanLazilyDeoptimize();
     }
     case IrOpcode::kJSCallRuntime: {
       Runtime::FunctionId function =
           reinterpret_cast<Operator1<Runtime::FunctionId>*>(op)->parameter();
       // TODO(jarin) At the moment, we only support lazy deoptimization for
-      // the %DeoptimizeFunction runtime function.
-      return function == Runtime::kDeoptimizeFunction;
+      // a few chosen runtime functions.
+      switch (function) {
+        case Runtime::kDebugBreak:
+        case Runtime::kDeoptimizeFunction:
+          return true;
+        default:
+          return false;
+      }
+      UNREACHABLE();
     }
 
     // JS function calls
     case IrOpcode::kJSCallFunction:
     case IrOpcode::kJSCallConstruct:
 
     // Binary operations
     case IrOpcode::kJSBitwiseOr:
     case IrOpcode::kJSBitwiseXor:
     case IrOpcode::kJSBitwiseAnd:
@@ skipping 14 matching lines @@
     default:
       return false;
   }
   return false;
 }
 }
 }
 }  // namespace v8::internal::compiler
 
 #endif  // V8_COMPILER_OPERATOR_PROPERTIES_INL_H_