Reland of "[turbofan] Osr value typing + dynamic type checks on entry. (patchset #5 id:80001 of htt…

src/compiler/common-operator.cc

 // 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/common-operator.h"
 
 #include "src/assembler.h"
 #include "src/base/lazy-instance.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/opcodes.h"
@@ skipping 192 matching lines @@
   for (MachineType elem : *types) {
     if (!first) {
       os << ", ";
     }
     first = false;
     os << elem;
   }
   return os;
 }
 
+int OsrValueIndexOf(Operator const* op) {
+  DCHECK_EQ(IrOpcode::kOsrValue, op->opcode());
+  return OpParameter<int>(op);
+}
+
+size_t hash_value(OsrGuardType type) { return static_cast<size_t>(type); }
+
+std::ostream& operator<<(std::ostream& os, OsrGuardType type) {
+  switch (type) {
+    case OsrGuardType::kUninitialized:
+      return os << "Uninitialized";
+    case OsrGuardType::kSignedSmall:
+      return os << "SignedSmall";
+    case OsrGuardType::kAny:
+      return os << "Any";
+  }
+  UNREACHABLE();
+  return os;
+}
+
+OsrGuardType OsrGuardTypeOf(Operator const* op) {
+  DCHECK_EQ(IrOpcode::kOsrGuard, op->opcode());
+  return OpParameter<OsrGuardType>(op);
+}
+
 #define CACHED_OP_LIST(V)                                                     \
   V(Dead, Operator::kFoldable, 0, 0, 0, 1, 1, 1)                              \
   V(IfTrue, Operator::kKontrol, 0, 0, 1, 0, 0, 1)                             \
   V(IfFalse, Operator::kKontrol, 0, 0, 1, 0, 0, 1)                            \
   V(IfSuccess, Operator::kKontrol, 0, 0, 1, 0, 0, 1)                          \
   V(IfException, Operator::kKontrol, 0, 1, 1, 1, 1, 1)                        \
   V(IfDefault, Operator::kKontrol, 0, 0, 1, 0, 0, 1)                          \
   V(Throw, Operator::kKontrol, 1, 1, 1, 0, 0, 1)                              \
   V(Terminate, Operator::kKontrol, 0, 1, 1, 0, 0, 1)                          \
   V(OsrNormalEntry, Operator::kFoldable, 0, 1, 1, 0, 1, 1)                    \
@@ skipping 550 matching lines @@
     }
   }
   // Uncached.
   return new (zone()) Operator1<ParameterInfo>(  // --
       IrOpcode::kParameter, Operator::kPure,     // opcode
       "Parameter",                               // name
       1, 0, 0, 1, 0, 0,                          // counts
       ParameterInfo(index, debug_name));         // parameter info
 }
 
-
 const Operator* CommonOperatorBuilder::OsrValue(int index) {
   return new (zone()) Operator1<int>(                // --
       IrOpcode::kOsrValue, Operator::kNoProperties,  // opcode
       "OsrValue",                                    // name
       0, 0, 1, 1, 0, 0,                              // counts
       index);                                        // parameter
 }
 
+const Operator* CommonOperatorBuilder::OsrGuard(OsrGuardType type) {
+  return new (zone()) Operator1<OsrGuardType>(  // --
+      IrOpcode::kOsrGuard, Operator::kNoThrow,  // opcode
+      "OsrGuard",                               // name
+      1, 1, 1, 1, 1, 0,                         // counts
+      type);                                    // parameter
+}
 
 const Operator* CommonOperatorBuilder::Int32Constant(int32_t value) {
   return new (zone()) Operator1<int32_t>(         // --
       IrOpcode::kInt32Constant, Operator::kPure,  // opcode
       "Int32Constant",                            // name
       0, 0, 0, 1, 0, 0,                           // counts
       value);                                     // parameter
 }
 
 
@@ skipping 283 matching lines @@
 CommonOperatorBuilder::CreateFrameStateFunctionInfo(
     FrameStateType type, int parameter_count, int local_count,
     Handle<SharedFunctionInfo> shared_info) {
   return new (zone()->New(sizeof(FrameStateFunctionInfo)))
       FrameStateFunctionInfo(type, parameter_count, local_count, shared_info);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8