[turbofan] Add support for eager/soft deoptimization reasons.

src/compiler/common-operator.h

 // 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.
 
 #ifndef V8_COMPILER_COMMON_OPERATOR_H_
 #define V8_COMPILER_COMMON_OPERATOR_H_
 
 #include "src/assembler.h"
 #include "src/compiler/frame-states.h"
+#include "src/deoptimize-reason.h"
 #include "src/machine-type.h"
 #include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Forward declarations.
 class CallDescriptor;
 struct CommonOperatorGlobalCache;
@@ skipping 15 matching lines @@
   UNREACHABLE();
   return hint;
 }
 
 inline size_t hash_value(BranchHint hint) { return static_cast<size_t>(hint); }
 
 std::ostream& operator<<(std::ostream&, BranchHint);
 
 BranchHint BranchHintOf(const Operator* const);
 
+// Deoptimize reason for Deoptimize, DeoptimizeIf and DeoptimizeUnless.
+DeoptimizeReason DeoptimizeReasonOf(Operator const* const);
 
 // Deoptimize bailout kind.
 enum class DeoptimizeKind : uint8_t { kEager, kSoft };
 
 size_t hash_value(DeoptimizeKind kind);
 
 std::ostream& operator<<(std::ostream&, DeoptimizeKind);
 
-DeoptimizeKind DeoptimizeKindOf(const Operator* const);
+// Parameters for the {Deoptimize} operator.
+class DeoptimizeParameters final {
+ public:
+  DeoptimizeParameters(DeoptimizeKind kind, DeoptimizeReason reason)
+      : kind_(kind), reason_(reason) {}
 
+  DeoptimizeKind kind() const { return kind_; }
+  DeoptimizeReason reason() const { return reason_; }
+
+ private:
+  DeoptimizeKind const kind_;
+  DeoptimizeReason const reason_;
+};
+
+bool operator==(DeoptimizeParameters, DeoptimizeParameters);
+bool operator!=(DeoptimizeParameters, DeoptimizeParameters);
+
+size_t hast_value(DeoptimizeParameters p);
+
+std::ostream& operator<<(std::ostream&, DeoptimizeParameters p);
+
+DeoptimizeParameters const& DeoptimizeParametersOf(Operator const* const);
 
 // Prediction whether throw-site is surrounded by any local catch-scope.
 enum class IfExceptionHint { kLocallyUncaught, kLocallyCaught };
 
 size_t hash_value(IfExceptionHint hint);
 
 std::ostream& operator<<(std::ostream&, IfExceptionHint);
 
 
 class SelectParameters final {
@@ skipping 98 matching lines @@
   const Operator* End(size_t control_input_count);
   const Operator* Branch(BranchHint = BranchHint::kNone);
   const Operator* IfTrue();
   const Operator* IfFalse();
   const Operator* IfSuccess();
   const Operator* IfException(IfExceptionHint hint);
   const Operator* Switch(size_t control_output_count);
   const Operator* IfValue(int32_t value);
   const Operator* IfDefault();
   const Operator* Throw();
-  const Operator* Deoptimize(DeoptimizeKind kind);
-  const Operator* DeoptimizeIf();
-  const Operator* DeoptimizeUnless();
+  const Operator* Deoptimize(DeoptimizeKind kind, DeoptimizeReason reason);
+  const Operator* DeoptimizeIf(DeoptimizeReason reason);
+  const Operator* DeoptimizeUnless(DeoptimizeReason reason);
   const Operator* Return(int value_input_count = 1);
   const Operator* Terminate();
 
   const Operator* Start(int value_output_count);
   const Operator* Loop(int control_input_count);
   const Operator* Merge(int control_input_count);
   const Operator* Parameter(int index, const char* debug_name = nullptr);
 
   const Operator* OsrNormalEntry();
   const Operator* OsrLoopEntry();
@@ skipping 48 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(CommonOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_COMMON_OPERATOR_H_