[turbofan] Introduce TruncateTaggedToWord32 simplified operator.

src/compiler/code-assembler.h

 // Copyright 2015 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_CODE_ASSEMBLER_H_
 #define V8_COMPILER_CODE_ASSEMBLER_H_
 
 #include <map>
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
@@ skipping 90 matching lines @@
   V(Word64Shr)                             \
   V(Word64Sar)                             \
   V(Word64Ror)
 
 #define CODE_ASSEMBLER_UNARY_OP_LIST(V) \
   V(Float64Neg)                         \
   V(Float64Sqrt)                        \
   V(Float64ExtractLowWord32)            \
   V(Float64ExtractHighWord32)           \
   V(BitcastWordToTagged)                \
+  V(TruncateFloat64ToWord32)            \
   V(TruncateInt64ToInt32)               \
   V(ChangeFloat64ToUint32)              \
   V(ChangeInt32ToFloat64)               \
   V(ChangeInt32ToInt64)                 \
   V(ChangeUint32ToFloat64)              \
   V(ChangeUint32ToUint64)               \
+  V(RoundFloat64ToInt32)                \
   V(Float64RoundDown)                   \
   V(Float64RoundUp)                     \
   V(Float64RoundTruncate)               \
   V(Word32Clz)
 
 // A "public" interface used by components outside of compiler directory to
 // create code objects with TurboFan's backend. This class is mostly a thin shim
 // around the RawMachineAssembler, and its primary job is to ensure that the
 // innards of the RawMachineAssembler and other compiler implementation details
 // don't leak outside of the the compiler directory..
@@ skipping 107 matching lines @@
   CODE_ASSEMBLER_BINARY_OP_LIST(DECLARE_CODE_ASSEMBLER_BINARY_OP)
 #undef DECLARE_CODE_ASSEMBLER_BINARY_OP
 
   Node* WordShl(Node* value, int shift);
 
 // Unary
 #define DECLARE_CODE_ASSEMBLER_UNARY_OP(name) Node* name(Node* a);
   CODE_ASSEMBLER_UNARY_OP_LIST(DECLARE_CODE_ASSEMBLER_UNARY_OP)
 #undef DECLARE_CODE_ASSEMBLER_UNARY_OP
 
-  Node* TruncateFloat64ToInt32RoundToZero(Node* a);
-  Node* TruncateFloat64ToInt32JavaScript(Node* a);
   // No-op on 32-bit, otherwise zero extend.
   Node* ChangeUint32ToWord(Node* value);
   // No-op on 32-bit, otherwise sign extend.
   Node* ChangeInt32ToIntPtr(Node* value);
 
   // Projections
   Node* Projection(int index, Node* value);
 
   // Calls
   Node* CallRuntime(Runtime::FunctionId function_id, Node* context);
@@ skipping 129 matching lines @@
   // Map of variables to the list of value nodes that have been added from each
   // merge path in their order of merging.
   std::map<Variable::Impl*, std::vector<Node*>> variable_merges_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_ASSEMBLER_H_